What do you have your conversion in???
 

Hello all,

Just wanted to see what all of you are doing with your converted engines. Speak up and give everyone some input on what you fly with what conversion and how it performs.

I will start....I am flying a GP Big Stik .60 with a 25cc Homelite conversion using the hop ups that are described on the RS Engines website. Vertical is unlimited spinning a 16 x 10 prop. A 16 X 8 works well too. I get 7500 RPM with an 18 X 6. The plan is very slow, but will hover all day. It is just too neat!

This conversion stuff is addicting! Does anyone else find themselves looking down alleys for abandoned weed whackers come trash day? I admit it, I am always looking for weedies that others have given up on!

Hope to hear from many of you soon!

Tom

RE: What do you have your conversion in???
 

Hi my name is Darin and I am a conversion addict. I do have alot of weedies but my problem has gotten worse,I thought that by moving onto something else I would be ok, but now I have alot of chainsaws.

currently in use I have 3 stihl 017 on glow (heck the thing only weighs 29 oz. bare)
one going in a balsa nova 1.20 to replace a us 35cc gas
one in a gsp katana 1.40
one in a h9 cap 1.20 that replaced the poulan 46cc gas

and the big stihl 066 91cc @ 64 oz. bare for the 1/3 staudacher

I also have a stihl fs91 30cc,029 56cc,039 64cc,echo 23cc,husky 65cc,shindiawa 20cc a few homies a few ryobis and macs.

Darin converted addict

RE: What do you have your conversion in???
 

Hi Tomenglert
Do you know
www.rcfaq.com
it's a great site to read to convert engines.
This help me .
Good luck
Jose

RE: What do you have your conversion in???
 

LOL. yep , we need something like AA for us. Well, I'm Mike and Im just a plain cheap a@@! Cant spend much anymore since the wife found about a dozen receipts and nearly went postal on me (sigh). So I no longer mess with my helis, cars(gas and electric), boats(same),all my glow airplane stuff and this R/C paperboy thing I was trying to perfect but nevermind that. So in trying to figure just how I could still get my fix and spend peanuts(no really, peanuts) I got into this conversion thing. BTW tom, I found my first ryobi in a dark alley, Im not proud of it but thats what happend. Ok, got a freebie ryobi, called in some favors, had it ready to fly a plane for $25 total. Now I needed a plane....Just how cheap can you build and finish and plane for a 31cc motor? $25! Yep, thats it. I call it my Pipe Dream. Go to Home Depot and buy the following:
PVC downspout 10' length makes two fuse's= $5.98
2" pink foam board 4x8 sheet=$14 but had a bad corner so I got it 1/2 off=$7..WOO HOO
3/8x1/2 hardwood spars=$3
and the rest of the cash went to nuts, bolts and rigging.
Sucker flys great! been flying all summer on it, even tought a few newbies how to fly with it. It has a 80" wing, 1200 sq in area and weighs in at a beefy 15lbs4oz but that ryobi hauls it straight up for a good ways. Piper

RE: What do you have your conversion in???
 

Thanks for your early replies!!!!!!!

KEEP EM COMING!!!!


Tom

PS - Mr. Piper.......what a cheap/cool idea for an airplane. It is kind of a SPAD without the signboard. I love it! It is so ugly, it's pretty! LOL
It looks like the ultimate conversion test bed as well. You could come up with all sorts of comparisons between your Pipe Dream / Conversion combo and get a good idea just what airplane the engine is capable of flying. TOO COOL.

RE: What do you have your conversion in???
 

HI,

I had a Kioritz 16cc on a Great Planes Big Stick that I had converted to a Low Stick. Flew well at sea level, but when I moved to a higher elevation, (4500'), it was underpowered. So I converted the 16cc to a 21cc, and once again it flew great.

However, soon thereafter I got hit with a massive radio glitch and destroyed the airplane. I'm now building a similar replacement, but with the fuselage designed for a gasser from the start, and I'll put my Homey 25cc on it. I've since found out that you can't fly the old AM radios here due to interference, so I'll need to buy a better radio.

AV8TOR

RE: What do you have your conversion in???
 

Wow! Did you have a problem getting the cg to balance with that much weight in the front? I'll bet you do have unlimited vertical with that combo!!
;)
Kiv

RE: What do you have your conversion in???
 

You have to cut off the front of the airframe to the former that is about 3-4 inches behind the firewall. You then put the firewall against that former and reinforce.

The servos for rudder and elevator as well as a 5 cell battery pack go in the rear of the fuse.

Believe it or not, I can still come in for a nice, slow, nose high landing even with the added weight of the Homey.

It is just too awesome!

I just noticed.........:D:D:D.....I am now a JUNIOR MEMBER.......YIPEEE!!!!!!!

Tom

RE: What do you have your conversion in???
 

My Ryobi conversions can be seen at http://www.jagengines.com just go to testimonials and then to Jim Adkins 4 Star.

RE: What do you have your conversion in???
 

Jim,

Very nice looking 4*120s. How did you do the two-piece wing?

RE: What do you have your conversion in???
 

60cc Homelite in a Byron Christen Eagle

RE: What do you have your conversion in???
 

I hav'nt gotten it yet, but I plan on building a Balsa USA stingray 120 and install an old ryobi 28cc engine I have. The Balsa USA Stingray comes in at just under 9 lbs total with a wing area of 1276 sq in. My 28cc ryobi turns a 16x8 Master airscrew prop at 7500 rpm. That should be a good combination.

Thanks

RE: What do you have your conversion in???
 

Well, so far, I've had a 22.5cc Ryobi, 28cc Stihl, 31cc Ryobi, and a Homelite 25 in my Ultra Stik. I've got a Hanger Nine Edge with a Poulan 36cc chainsaw motor, and now have nine flights on my Texas Hurricane with the Poulan 54cc in it (GREAT COMBINATION!) Got one of the new Wildhare Edges coming for the Poulan 60.

RE: What do you have your conversion in???
 

Ultra Stick, Ryobi 31cc.

RE: What do you have your conversion in???
 

forgot one...

RE: What do you have your conversion in???
 

More great airplanes with great little engines on em! Keep em coming!

Has anyone figured out I am using all of you for ideas so I can take em out on some poor unsuspecting chainsaw/weedie!

????If you were a utility engine, would you rather be flying or cutting grass????

Tom

RE: What do you have your conversion in???
 

Hello, I would like to put my Homie on Ultra Stick 120 ....how do I mount it and get gas and throttle connections? Thanks

RE: What do you have your conversion in???
 

I think the new Hangar 9 "Ultra Lite" Stick would be awesome with a 25 to 32cc gasser on it. Just haven't been able to get off the bucks to order one yet. It lists a 26cc gasser as an option for the plane, so it should be ready for use as a gasser plane. Plenty of wing and light too. Has anyone here done one yet??

AV8TOR

RE: What do you have your conversion in???
 

yes I have done the homelite and ultra stick lite it is a perfect combo just reinforce the firewall with pins.It floats in and has unlimited vertical Kenneth

RE: What do you have your conversion in???
 

HELP.....The plate on the back of my Homie is about the size of the US120 firewall, with 4 mounting holes. The screw heads that mount the plate to the engine stick out about 1/4 inch..how do I mount....and do I drill holes in Al plate for throttle push rod and gas lines..............thanks wc

RE: What do you have your conversion in???
 

Hey y'all.
I just wanted to drop a line or two.
As a part time job (work-on-side) I have a small engine repair shop and I never really thought about flying models with chain saw or wacker's engines untill I found an amature web page of one guys who fly big stick airplane with ryobi engine.Anyways,I decided to try and convert engine off one of my many 'eaters.
Will strip everything off but the only problem I think I will run in to is balance flywheel after I cut the fins.The filns will HAVE to be cut to avoid un-wanted airmass flows ,generated by fins.And I don't want to put no electronic ignitions of any kinds.

If anyone of you knows how to avoid disbalance of the flywheel ,please let me know.
Thanks.

RE: What do you have your conversion in???
 

Mitty,
Put the flywheel on a lathe and turn down the fins to the same level as the hub of the flywheel. If you are accurate, balancing should not be a huge problem. I have never considered disturbances caused by the flywheel being a problem - the reason you turn them down is due to weight saving measures.

By the way, mine works really well without "no dang electronic ignition"! It kind of defeats the purpose of conversions - keepin' em cheap! If you price an ignition system you will find they cost as much as a brand new weedy at Home Depot.

Good luck with your conversion projects. BE CAREFUL, you might become addicted!

Tom

RE: What do you have your conversion in???
 

Hey Volfy I used a tube in tube assembly about like you'll find in a big bingo.I do not use any dihedral and I use a ply ribs on inboard and outboard ends of the tube sockets.The sheeting goes on next to the inboard rib only.The ribs in between the ply ones can be regular ones.If you use a 18" aluminum tube then your phenolic ones that goes it the wing panels will be 9" long each that is how long your sheeting will be.Finally use a extra balsa block in the wing just ahead of main spar under the sheeting.You will now have 2 places to attach your bolts after you drill thru the balsa block and install additional mounts in the fuse. then top it off with thin aluminum straps with holes at either end to prevent wing from spreading apart at hi G maneuvers.Good luck let me know how they turn out.

RE: What do you have your conversion in???
 

Jim, thanks for the explanation. I just got a 4*120 kit NIB, which I'm hoping will be my "Winter" project (there are no winters down here :)). My truck bed is only 73" long so I'm stuck with either shortening the wing, as some have suggested, or doing the two-piece mod. I'm leaning much more towards the two-piece mod, now that I know you've done it.

RE: What do you have your conversion in???
 

Anytime I can help I'll be glad to if you need more info I'll try and come up with sketches or something.Later dude.

RE: What do you have your conversion in???
 

I just received my Balsa USA stingray 120 and it looks like the Ryobi engine will fit this kit real nicely. The firewall will have to be moved back about 3" from the plans, but that should not be a problem. The Ryobi has the carb at the rear of the engine that makes it a little longer than the others out there. By moving the firewall back 3" this will put the extra weight of the engine closer to CG. I plan on putting the servo's for the elevator and rudder to the rear of the fuselage, this will also help out with the CG. The gas tank will have to be installed under or close to where the wing mounts to the fuselage. By doing all of this I hope the CG will not be a problem. The plane weighs just under 9 lbs built and the Ryobi weighs 4 lbs making the bird about 13 lbs. She has a wing area of 1276 sg in and an 83" wing span. I believe this will make a good flying combination.

Thanks

Jim

RE: What do you have your conversion in???
 

I put mine in a 120 size Diabolo. I don't know who made the kit but it is an ARF with a 70 " wingspan. I just weighed it (on my bathroom scale-not too accurate but...)and it came in at a tick over 9 lbs. I am new to gassers but the engine is new and with a 16x8 prop I'm hoping it will be a good performer with a fair bit of vertical. Can anyone offer their opinion on what I can expect for performance? Thanks!
Soulman

RE: What do you have your conversion in???
 

At just over 9 pounds, it should work great!

Tom

RE: What do you have your conversion in???
 

Scratch built. 84" span, weight 11#4oz. 32cc kioritz, compression and timing modified.

RE: What do you have your conversion in???
 

BigPink!

Scratch Build Giant Foamie
http://home.comcast.net/~crazyherb-rc/bigpink.htm

http://home.comcast.net/~crazyherb-r...eveandpink.jpg

Fun stuff!!

CrazyHerb

RE: What do you have your conversion in???
 

Way cool herb!

RE: What do you have your conversion in???
 

Hi there!

I used 2 STROKE glow fuel in a weedeater conversion,its a Poulan ,probably 21 or 31 cc.Not only did the rpm rise enormously,it was also smooth and the engine ran with the ignition off!(Only need the ign for start) Havent installed it on a plane yet. But has anyone of you guys tried it yet? I would appreciate a feedback.

RE: What do you have your conversion in???
 

Qadri: Place a glow plug in your engine and throw away that heavy ignition system. Make or buy a glow plug adpter. I will be runing a 30cc Homelite soon on glow. Very lite!!! Thanks Capt,n .... PS 5% or no nitro will work with far less oil than glow fuel has in it.

RE: What do you have your conversion in???
 

Mine is on a Bandito Grande. Had to move the firewall back 3 1/4" to balance with no led. Weighs in at 13 lbs 14.5 ozs. Did some other mods, can see it in the pic. All in all I like it a lot. This plane will be my test bed when I convert the others.
Edwin

RE: What do you have your conversion in???
 

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RE: What do you have your conversion in???
 

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This is my Ultra SPAD Stick with a Ryobi 31cc engine. It flys like a great big trainer. In the process of converting a Homie 45cc chain saw engine. I'm told that with that engine, I'll have all the verticle I can handle.

Charlie S.

Sorry for the previous post - could't get the pic to post & couldn't delete the post!

RE: What do you have your conversion in???
 

Personally myself...The whole idea of burning the sky all day long and burn fuel for total of $1.15 is what makes me wanna have a gasser conversion.You dont need a special 'erl' and cheapest gas will do.Plus if you don't have an electronic ignition-thats even cheaper.Couple of days ago i bought a roybi 31 cc with broken pull-rope for $15.That should be easy conversion.

Good luck.

Mitty

RE: What do you have your conversion in???
 

My converted Ryobi 28 is in a Balsa USA 1/4 scale Cub. The thing weighs 17 lbs, and I've only flown it once, but the take-off roll was short, and it flew about in a very pleasant Cub-like manner. Negative verticals only.;)

RE: What do you have your conversion in???
 

I'm building a Bridi Big Bee for my Honda GX25. I must have gotten the last Big Bee from Sheldon's about 2 weeks ago, I tried to order another 3 days later, and they were out. Every single piece of wood in this kit was solid, Ribs, bulkheads, fuse sides, hatch, etc. I spent some time with a router and dremel cutting holes in everything. I've heard they fly real well even over 15 lbs, so I hope I'll have a floater, and the Honda won't be pulling it around like a G62.

http://home.insightbb.com/~chell69bug/bee1.JPG

http://home.insightbb.com/~chell69bug/bee2.JPG

http://home.insightbb.com/~chell69bug/bee3.JPG

http://home.insightbb.com/~chell69bug/bee4.JPG

http://home.insightbb.com/~chell69bug/bee5.JPG

http://home.insightbb.com/~chell69bug/bee6.JPG

RE: What do you have your conversion in???
 

poulan 60cc in the cap poulan 36cc in the T craft homelite 25cc on the stick light and a stihl 25.4 cc on another stick light