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What the hell did I get myself into?

Old 01-11-2015, 03:37 PM
  #76  
Propworn
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Originally Posted by JohnBuckner
Well sir my opinion is no more ridiculous than your obvious failure to read and comprehend what I actutally wrote before you choose to go on the attack.

Let me explain in a simple way. By beginner what I was trying to point out were the ones who are attempting the self taught route and yes my friend Those folks are very often do poor installations and an exploding spinner is not that uncommon. I have been hit by shrapnel and its not all that uncommon. This particularly so at some of the countrys most active fields those where no AMA is required and the self taught thing is common.
I fly from a field in the US twice a week with a loose group of AMA flyers but it is not an official club. They use the grounds with permission from the 8 Mile Light Guard Armory. There are beginners all the way to advanced flyers. Fixed wing and heli/mutirotors, electric and fuel and most fixed wing have some sort of spinner. In fact most beginning flyers of fixed wing on both sides of the border all use the spinner that came with the kit or one recommended by the kit and you know what? Your evaluation of the spinner failure is not factual there are more spinners in use with beginners than not because that is what is recommended. The perceived danger is all in your head and that’s my opinion.

Dennis
Old 01-11-2015, 04:14 PM
  #77  
Propworn
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Originally Posted by Rapid13
I got a lot done this weekend. The main landing gear is in. The hatch is on. And the engine is in. Getting the engine on the mounts was difficult but I used extra thick CA to hold the engine in place and the dead center tool that John mentioned. That made it much easier. I have checked the position of the engine twenty times and it seems as straight as it can be. There is supposed to be 4 1/2 inches between the firewall and the spinner. It looked like the engine was too far forward at first but once I put the hatch on it looked right. I shaved the fuse to clear the muffler and gave it about an 1/8 of and inch clearance. Right now I have a plastic spinner on it because I needed something to measure off of but will probably try an aluminum one once I'm ready to fly.
The build so far looks above average your doing well keep up the good work. Everything you are going to ask on this forum is going to result in many different ideas and methods. Eventually you will gain enough experience to make your own decisions. In the mean time take the advice given here with a grain of salt.

I personally like to wait to mount the engine until the end just before final covering. Rather than add weight I will move the engine on the beams until the model balances. With trainers they supply a plate where you mount your servos to a predestinated position in the fuselage this limits your ability to use this to help the balance. I like to complete the model in the bones complete with landing gear and servos in place. They don’t have to be mounted just in the holes. The motor mount is usually beam mount (wood supplied in the kit) or some sort of plastic/fiber re-enforced mount you screw to the firewall. Most mounts will allow you to slide the motor forward or back a little and this can ease the setting of the center of gravity. In one case I have a motor with a very long nose on it. This allows me to keep the cylinder head back towards the firewall where the cowl is larger so I don’t have to cut out openings in the cowl. The motor mounts direct to the firewall and I needed a ½ inch spacer so I made one from aluminum (same as the crankcase profile) and it spaced the motor/ spinner out perfectly adding a minimum of extra weight.

https://www.youtube.com/watch?v=Z-VK7rxxbjc What ever you do don’t get hung up on there only being one way to do things. Experiment; ask questions even better is to observe how others do things you can learn a bunch even from some of the newest members. Good ideas often come from unexpected sources. Be wary when anyone tells you there is only his way of doing things there are just too many others out there doing things a different way and having a ball. Keep an open mind and try everything once that’s what makes this hobby so interesting.

Dennis

Last edited by Propworn; 01-11-2015 at 06:01 PM.
Old 01-11-2015, 06:24 PM
  #78  
Propworn
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Originally Posted by JohnBuckner
Well sir my opinion is no more ridiculous than your obvious failure to read and comprehend what I actutally wrote before you choose to go on the attack.

Let me explain in a simple way. By beginner what I was trying to point out were the ones who are attempting the self taught route and yes my friend Those folks are very often do poor installations and an exploding spinner is not that uncommon. I have been hit by shrapnel and its not all that uncommon. This particularly so at some of the countrys most active fields those where no AMA is required and the self taught thing is common.
I did indeed re-read your post and to quote you “So when I agree to take on a new fellow to mentor if his airplane (At least the glow planes) has a full plastic) he will replace it with a spinner nut or we do not fly. “ I take it you’re not referring to the lone wolf learning on his own.

So instead of taking the beginner aside and showing him how to properly install a spinner, tighten the prop and align the prop and compression stroke to make starting easier you simply put down the fact he chose to use the equipment recommended by the manufacturer of the kit/model and insist he purchase and use something that is nothing but your personal preference.

In my book any half way decent instructor should be able to show any beginner how to properly install any spinner so it is safe and functional.

Look around the field fellow’s spinners out number prop nuts at an extremely high ratio. If they were such a safety hazard I am certain there would be warnings against using them. I know there have been warnings published about using the old style props that you boiled before use but nothing about spinners except following the manufacturer’s installation instructions.
Old 01-11-2015, 06:33 PM
  #79  
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Rapid13 in the pic's you've posted I don't se any clamps being used, So I would add 2 things if you have a Harbor Fright close by They have a bag of small/medium plastic spring clamps that will help you hold things while you are checking a fit and to hold the parts while the glue is setting up. Next I am NOT a c/a fan for major structure's (my personnel preference is Titebond and gorilla glue) and when I do use c/a I generally go back over all joints and add a fillet of an alpha glue. NOTE: If you try to use gorilla glue there is a learning curve with it as it expand's about 5 to 1

All of the above suggestions are right on.

Cheers Bob T
AMA13377
Old 01-11-2015, 06:44 PM
  #80  
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Originally Posted by JohnBuckner
Hey Rapid 13, The spot tacking technique you are talking about will certainly work but if you plan to be around awhile I highly recommend this tool and at eight bucks its a steal:

http://www3.towerhobbies.com/cgi-bin...&I=LXK378&P=ML

One method I use often simply because its so quick and easy is to measure how far out you want the engine then bolt up or screw up to the beams now the fuselage is just held between your knees while you are sitting and hold the engine with mounts in position then use the locator tool to make the four marks. Then just drill through.


John
Great share, just ordered one off ebay. I am not a machinist and I think I am missing some inner secrets about how to get properly located, plumb holes for such things. Never seems hard at first but the process somehow never comes off perfectly. This will save me an hour or two just mounting each of the myriad 1/2A engines I have sitting here to soak up with planes.
Cheers - Peter G.
Old 01-11-2015, 06:54 PM
  #81  
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Think you Peter could use a little positive reinforcement when I come under such a vicious attack.

John
Old 01-11-2015, 07:24 PM
  #82  
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Originally Posted by L8cruiser
I am a beginner also. If I was you, I would learn to fly on an ARF trainer or a cheap used trainer. I would hate to crash a stick built plane that I have hours and hours building. I would fly the stick plane after after I learned to fly. Back in the day you had no choice but to learn on a stick built. Today you can purchase a arf under a hundred bucks. Also a simulator will really help you get started.
I remember the first time I made beer. This was before there was so much selection that we have nowadays, over 20 years ago. A buddy at work was a bit of an evangelist about it so I always pick up on other people's enthusiasm. Bought the bible of homebrewing, and read what I needed to do about 3-4 times. Went to the beer stuff store and flubbed my way thru getting the equipment and ingredients I needed. Went home, sanitized everything twice, got the 5 gallons of water boiling. went laboriously through each step. I was unfamiliar with any of the process. Finally, got the boiled ingredients into the carboy to ferment, etc. etc etc.

After the third time i was flying thru the process, and getting good results. Unfortunately, there were a whole lot more beer tasters out there than brewers, the ratio was skewed for some reason. So, homebrewing turned out to just be boiling a bunch of ingredients, washing everything with clorox ahead of time, pouring the stuff from one vessel to another a few times. And waiting. There can be more to it depending on how crazy you want to get but you can make a whole bunch of different beers with very little effort. But, just go buy some ARF beer these days - Already Racked and Fermented.

Same with building a balsa slimer. It's all new at first. You're so intense about figuring out each step and getting the thing finished, it is a big shift of mindset to actually fly the thing. After a build or two, you hold both the build and fly experience in mind at once, and you start building to finish and get flying, once the mystery is out of it. That is why you can't be afraid to fly, or overinvest in the first bunch of planes. Build them to fly them. Build them straight and fairly light and it is going to fly. There are plenty of fast-build good flyers. You accumulate tools and skills along the way to speed the process or take on more advanced materials or building techniques. But keep flying!!!

Looking back the main thing you develop is getting the plane's CG in the right spot. That is to me maybe the first, and a major, development of ability - basic airworthiness.

Make sure to keep making it fun...

Cheers, Peter

Last edited by BrightGarden; 01-11-2015 at 07:34 PM.
Old 01-11-2015, 09:23 PM
  #83  
OzMo
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Originally Posted by clarkj
you sound exactly like me 20 years ago. I wanted to fly so bad and everyone told me to build so when I crashed I would know how to fix it. I gave up before I ordered a plane. looking back I can definitely see that I would have never built the kit with all the work involved not to mention learning to cover. I decided to buy a superstar trainer rtf 8 years ago and have been going wild ever since. I'm now flying 100cc planes and love it. I have built a couple kits but i'll tell you, unless you have help and lots of time you will burn out building if you're like me. if I had to start over I would buy a rtf trainer and learn to fly with some help then if you want to build have at it. I have an alpha 450 for my son and it flies pretty darn good for its size.
AHH well its true for some. However, building can be very rewarding and often you get a much finer product. Building with others is really nice, our club does the occasional "Build Night".
Old 01-12-2015, 03:36 AM
  #84  
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I don't glue any hinges (Rudder, Elevator, Ailerons) until the covering is on the aircraft... I did not see anyone mention that.
Old 01-12-2015, 06:53 AM
  #85  
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Originally Posted by Rapid13
After years of racing rc cars I decided that I want to get into planes. Since there probably isn't much outdoor flying here in Indiana for the next few months I thought I would try to build my first plane. A Great Planes PT40 kit will be on my doorstep tomorrow. After reading the manual for the past few days I am thinking what the hell did I get myself into? I have a strong mechanical ability but this is all new to me. Yesterday I bought some supplies from the LHS and tried gluing some balsa and making some hinges. So far they have turned out pretty good. I'm just hoping the rest of the build is a straight forward as the first few steps. Being brand new to planes I wanted to start a thread to document my progress and post questions as they come up. Hopefully my experiences helps out other people just getting started too. Thanks in advance and I am tentatively looking forward to getting started.
One thing U will have is the LEFT / RIGHT thing coming at U. Best of Luck.

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46.87 miles [/TD]
[TD] 3526 [/TD]
[TD] 12 [/TD]
[TD] STEVE DOUGHTY
Email Contact [/TD]
[TD] Phone: 765.401.1230
Visit Website
[/TD]
[TD] 6 [/TD]
[TD] Yes [/TD]
[/TR]
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[TD] GLASS CAPITOL PROP TWISTERS - Email Club
Flying Site Details
48.07 miles [/TD]
[TD] 3393 [/TD]
[TD] 22 [/TD]
[TD] BOB BICKNELL
Email Contact [/TD]
[TD] Phone: 765-369-2505
[/TD]
[TD] 6 [/TD]
[TD]
[/TD]
[/TR]
[/TABLE]





[TABLE]
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Old 01-12-2015, 07:03 AM
  #86  
HoundDog
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According to Google Maps U are only 42 miles from one of the greatest Flying sites in the world and the Museaum of every thing in RC flying ... check it out this winter.
[h=1]Academy of Model Aeronautics[/h]5161 East Memorial Drive
Muncie, IN 47302

[h=2]Open today[/h]
  1. 8:00 am – 5:00 pm
Old 01-12-2015, 09:04 AM
  #87  
AMA 74894
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I'd like to step in and remind everyone that this is a friendly forum, that we all are ALLOWED to have different opinions, and that differing opinions are not a valid reason to start attacking one another.

Thanks Gents, let's go back to helping out the newer folks.
Old 01-12-2015, 09:49 AM
  #88  
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Sometimes I've had to use just a little CA to hold my engine to mounts until I get the engine located on the firewall and centered with the cowling. One drop of CA per each side of the engine usually is enough to tack it on long enough to get it located.
When the small drop dries, it's not so tight you can't get them apart later. This is handy if you have a plastic cowl. Once you get it centered on the firewall with the center of the cowl and the mounts screwed down, then you can break the engine
free and slide it front to back until you get the right clearance between the spinner and the cowl. Once in a while, I've had to carefully wedge an Xacto blade a little between the engine lug and the mount to get them started coming apart. Another tip,
is don't work with the engine temporarily glued to the mount while hanging over a table. If the engine should come off the mount while working, you don't want it to fall to the floor and get damaged. Keep your work over your bench. I had a new engine
once where it fell off the mount while working and hit my concrete basement floor and it broke a couple of cooling fins. Didn't hurt performance but it looked bad and I was pissed.

Great Planes makes a hole center tool that is handy for locating the drilling centers of engine to mount and mount to firewall or any other hole center application.

Last edited by carddfann; 01-12-2015 at 09:52 AM.
Old 01-12-2015, 04:49 PM
  #89  
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Before you go out to the field,locate a club in your area. Attend a meeting and ask someone for some help setting up the plane and transmitter. If you go electric make sure you have the proper equipment and most of all don't be afraid to ask for an instructor!.
Old 01-12-2015, 05:08 PM
  #90  
JohnBuckner
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http://www3.towerhobbies.com/cgi-bin...&I=LXK378&P=ML

indeed here agine is the wonderful tool that Carddfann is referring to at eight bucks it can be one of your most valued tools Also you will find on occasion uses other than just hanging engines.

The modern glass filled engine mounts and the type your PT-40 kit uses is very easy to use the temporary tack with CA technique works well for marking the drill points. My preference is to mount the engine to the beams first and of course measure the distance that you prefer. Since you PT-40 does not use any cowl only side cheeks its very easy to position the engine where you want it and then use the locator tool. I do not normally do not do the CA tack tack method but it can work easily also. I normally just sit in a chair and look straight at the front of the fuselage with the engine mount installed which makes it easy to position it where you want it then mark with the locator. Here too a temporary tack with CA can be helpful if you like.

John
Old 01-14-2015, 10:13 PM
  #91  
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Default Don't worry about the plane, just enjoy the hobby

Rapid13,

In my opinion, you've gone about this the right way. You've started by building your own trainer (good approach, good choice of plane), and then you've asked the community for some guidance; again, you're doing the right thing. I'm of the opinion that for some folks, building their own plane may mean that they might approach the flight training with a bit more thoughtfulness and caution, and proceed in a stepwise, conservative manner, and thus actually learn to fly in baby steps, rather than just bounce a foamy around the sky and the ground. Don't get me wrong; nothing wrong with foamies, or even being less cautious about flying them; but in my opinion these different approaches probably suit different personalities.

I started in RC flying (gliders) by building a well-known built-up balsa "trainer" (Airtronics Olympic II sailplane). I visited (and joined) a local club, and got all the help I could ask for from a really great bunch of people who were genuinely interested in helping me have an enjoyable introduction to the hobby. People actually approached me, and asked if they could help in various ways. My build got checked over with a fine-tooth comb, not looking to criticize my skills, but merely looking to ensure the airframe was flight-worthy; that it was built straight, that it was balanced correctly, that the control surfaces operated smoothly, that my radio was set up correctly - the idea, of course, was to try to avoid preventable mishaps. After everything was checked over and given the green light, the plane was hand-launched (remember, this was a glider) to check the trims, and then someone offered to launch and test fly it. They took the plane up (on a winch) and rechecked the trims, did a few maneuvers to test the overall stability, and then (AND HERE'S THE CRITICAL PART) my first stick time was with the plane already in the air and flying smoothly. That first flight lasted 14 minutes (remember, no power)! The club members didn't want me to worry about launches or landings until I felt comfortable enough that I'd accumulated sufficient stick time to give it a try. They'd be there to launch, and to land. It was a wonderful way to start out in RC flying.

I had accumulated a lot of flying hours on that plane before it suffered any mishaps. Of course, flying gliders is easier in many ways; the airframe has a lot less mass than comparable-sized powered planes, so there's less chance of serious damage when you do get around to bouncing it (of course you can't just drag the airframe around the sky with an over-powered prop either; you actually need to learn to fly). But the point I'm trying to make is that beginners can learn to fly on stick-built airframes without necessarily suffering discouraging mishaps, if they go about it in reasonable fashion, and if they have all the right help.

Finally, I'd like to emphasize something that others have also mentioned. I can appreciate that building is not for everybody, but it can certainly be a very enjoyable part of the hobby. Here's the thing though; if, when you're done building, you find you're afraid to fly it, then "building to fly" is probably not your thing, and that's fine. There are flyers; there are builders; and there are builder-flyers; there's a place for everybody. My own attitude is that if you crash a plane you've built, repair it and fly it some more. If it ever becomes un-repairable, who cares(?); I enjoyed my time spent building it, I enjoyed my time spent flying it, and I enjoyed my time spent fixing it. And I can always enjoy all of this again with the next plane, and the one after that. It's not about the plane; it's all about your enjoyment.

Good luck with your plane; I hope you enjoy every minute of building it and flying it.
Old 01-15-2015, 10:48 AM
  #92  
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Originally Posted by mghowell53
Before you go out to the field,locate a club in your area. Attend a meeting and ask someone for some help setting up the plane and transmitter. If you go electric make sure you have the proper equipment and most of all don't be afraid to ask for an instructor!.
TIP: Take your instruction book(s) with you. Radio, ESC and so forth. I know its starting to seem overwhelming. IT will work out and it REALLY IS FUN!
Old 01-15-2015, 10:51 AM
  #93  
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Most of this stuff will become automatic after a while. Don't let any problems stop you from having fun and making new friends.
By this time next year you'll be helping new guys.
Old 01-17-2015, 12:02 AM
  #94  
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Originally Posted by Rapid13
Thanks for the tips guys. I will get one of those prop nuts on my next tower order. The manual for the PT40 calls for a 2 1/4 spinner. I am going to get one of those too because to set the engine on the mount it says to measure from the spinner back plate to the firewall 4 1/2 inches. The engine calls for an 11-6 prop. Any suggestions on props or are they all pretty much the same?
Not really my place to butt in but I will. Just reading through this thread kind of makes me remind myself that I am a very "OLD TIMER" and I do not stay up much for this stuff any more.
Trainer engines in the .35 to .50 size; .35 to .46 IMO should be in the 11-4 range. You get much better PULL for take-off and plenty for cruise along with the times you full-throttle GO-Around. Of course be aware the engine will wish to torque the model to a left turn. Use some rudder to straighten along with the ailerons a but easy on aileron. The 11-4 will make your landings much easier and will assist those nose-first landings to be many less. Why? When you start a round-out as you land, a low pitch prop will keep more air flowing over the tail feathers. That assists you in keeping the nose up rather than spitting down. As you slow, you need to be able to feed in more "UP" elevator, yet slow down. The low pitch assists you to do so. Lord only knows just how many bent nose gears and broken props that I have seen newbies.
My favorite remembrance some years ago, there was this really excellent flier but he had "L" with landings. One day I asked if he would care to try something. He was flying one of the high wing trainers of the day. He was an airline pilot but came from Navy Carrier fighter pilot background. I commented that he seemed to fly in with a good approach but always dropped the nose and Ker-Thunk! We discussed a few items: Do you do that with an airliner? "NO!" Are you on a Carrier deck out here? "NO!"
When you "chop" the throttle as you are about to land a model, does your model's nose drop? "Yes!" How about keeping some power on rather than cutting back? "If I do that, the model will not slow down!" Then how about using less pitch in the prop? "I only use 10-6 with this engine." Would you try an 11"-4" prop? "I don't have one."
Well I do so let's try it. Within 3 approaches, he was easing off the power to minimum idle as he eased the nose up for greaser after greaser. That is a reason that pylon racers cut their throttle before landing and start the approach WAYYY out! BTDT!
I have not been doing much for the past year, but I will be back big time real soon. For the normal flying I find the Thunder Tigre to be the best little .40-45 engine
ever. I have many many engines of many makes, number of sparkers to current, along with some 100 kits from rubber stick to a turbine kit, which I have never tried to build and probably never will.
One that I don't care for is any one with O.S. stamped on it, yet I do use a few O.S. Clones. In addition I just cannot think of using electric for a flying model airplane, however on the other hand, well you know , hummm, wanna buy a lot of gas and glow engines???
Old 01-17-2015, 08:38 AM
  #95  
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I agree with the longer prop with a smaller pitch but to locate them in say a 4 pitch you may have to order them. I was out last week and went to two shops looking for props in the 10 and 11 length with small pitch, 6 was as small as I could locate.
Old 01-18-2015, 09:14 AM
  #96  
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Originally Posted by Gray Beard
I agree with the longer prop with a smaller pitch but to locate them in say a 4 pitch you may have to order them. I was out last week and went to two shops looking for props in the 10 and 11 length with small pitch, 6 was as small as I could locate.
Excellent point G.B. I never have that problem as I do some mail-order, yet seldom do I have to buy props that way. In addition now and then if I find a store with them, I may pick up a supply, or so whether I need them or not. . In addition, the LHSs really are so enticed in electric and such they seldom speak "model builders" anymore. However, guess I better check out my supply of the 4" pitch, which I use mostly for training, but Spring is on its way.
Old 01-18-2015, 01:14 PM
  #97  
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Originally Posted by Hossfly
In addition, the LHSs really are so enticed in electric and such they seldom speak "model builders" anymore.
Please elaborate. It sounds like you are saying that electric fliers are not model builders.

Last edited by TomCrump; 01-18-2015 at 03:45 PM.
Old 01-18-2015, 02:21 PM
  #98  
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Tom

I did not get that impression, what I got is what I see at my LHS they are catering to the money ie electric's our good shop's are for the most part a privately owned and generally stocked fairly well and always offer to order the item and have it in less than a week.

Just my thoughts

Cheers Bob T
Old 01-18-2015, 03:31 PM
  #99  
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My main hobby shop was a builders and giant scale shop until it sold a couple years ago. Even at that point the back room had a huge selection of ARFs and electric planes were just starting to really take off so at this point the shop is now stocked with what is selling the most, that is electrics and ARFs not to mention all the quad choppers. They still have a good selection of supplies for builders, just nothing like it had just a couple years ago.
I have little use for small props, that would be anything under 15 inches but the shop had a good selection of 10 and 11 inch props, just not in pitch. They did have a pretty big selection of small APC props in pusher?? They even had them in the small pitch. I figured the owner just got a good deal on pushers?
My point was just to remind the OP that it is easier to buy a selection of prop sizes and pitches from a place like tower if he wants a good selection because not all hobby shops will have them on hand or have a good selection of makes and materials.
So far my electric powered planes are one small ARF, three kits and a scratch built but by far the most electric types of planes in my area are foam ARFs but there are several kit built trainers. I'm still a builder but I agree with Bob, the shops cater to what is selling and electric ARFs are hot. I haven't seen a kit at any of my three local shops in a long time. It's even rare to find balsa stocked in them.
Old 01-18-2015, 05:16 PM
  #100  
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It all started in the 20's, 30's & 40's with people making their own plans and scratch building. Then after 22II kits appeared, In the 50 an early 60 it was all kits and only the experts scratch built. Now this lasted through the mid 90's then came the ARF made of Light ply Foam covered plastic and plastic winf and rudder & elevator tips ... Almost impossible to repair. Then came ARF (Pre Built light ply and balsa and regular shrinkable covering. Noe those are pretty much giving way to Foam electrics and U still find few really talented builders doing Large scale War birds either from plans (Scratch) or short kits.

If U look at it Model Aviation pretty much followed Full Scale Aviation. Scratch build (Wright Bros. ans others) in the early 20 century. Then Manufactures built certified air planes then the EAA came on in the early 50's and many were scratch building full scale from plans then Kits became popular and 51% of the plane had to be built by the builder / Pilot. then came Plastic fiber glass planes built from plans then profusinaly built and certified.

Thing just keep marching on and the old timers whine about things changing and it's going to destrou the Hoby sport as they knew it. So be it. Some people have the time and the skills and where with all to build or even assemble an ARF. As for my self I hate CA but it sure likes me. So I buy USED . Thank God for RCU, Swap meets and auctions.

Just be happy that there are ready to fly and foam electrics and now the Quads. If it wern't for the advance ment in new meterials and ready made to fly plane we probably would not be able to afford a the hobby today. my 2 cents worth JMHO

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