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RE: Hangar 9 Fokker DVII - 9/24/2012 8:24 PM   
rowdyjoe


 

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From: Arlington, TX, USA
Status: offline 		Chris,
     Very nice job on your make-over.  That scheme certainly sets it apart from the crowd.
Thanks for the tips on ground handling.  

RJ



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RE: Hangar 9 Fokker DVII - 9/25/2012 6:05 AM   
ramboman


 

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Status: offline 		I don't have such a problem.
My Fokker D.VII is my easiest plane do fly...
Powered with a Torque 4014 under 6s2p a123, there is no add'l weight.
Check again your CG and your controls...

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RE: Hangar 9 Fokker DVII - 9/26/2012 6:35 AM   
rowdyjoe


 

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Status: offline 		After ordering a pair of H9 Camel wheels as replacements for the one I broke on the DVII, I decided to try to repair the wheel I broke and use the stock wheels. 
The wheel broke during a botched takeoff attempt.  It skidded sideways and put a lot of pressure on the left wheel which broke the mounting studs inside.  It ripped the screws out of the lugs and the wheel came apart. 
As I looked at the wheel it dawned on me that I could drill out the holes on both wheel halves and put bolts and nuts through to hold it together.  So, I used a #30 drill in my drill press and drilled through the mounting lug locations.  I went to the hardware store and bought 4-40 X 1.25 long bolts and washers and nuts.  It worked like a charm.  I secured the nuts with thread-lock and expect it to hold very well.  The nuts and washers are on the inside of the wheel hub where they won't show easily and I'll probably paint them.
 
The cost of the hardware was around $5 for 6 of everything.  I plan to paint the pan head bolts red so they're not so obvious.  I will probably modify the right wheel too so they match.  Those who don't know will think the mfg did it that way in WW1. 

I think a lot of my trouble with takeoffs has been due to the axle moving left and/or right during takeoff roll.  I have hopefully eliminated that problem by using large washers and wheel collars to lock the axle tight against the strut.  That should prevent the axle sliding around.

RJ



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RE: Hangar 9 Fokker DVII - 9/26/2012 11:55 AM   
Azzir325


 

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Status: offline 		If I remember correctly, those wheels were set up with an internal wheel collar, but I could never get them assembled just right. I wound up drilling the axle thru and using wheel collars on the outside. I don't recall if I had to cut the axle down or not, but the fit is pretty good and I think there is a washer (nylon?) between the wheel and the rubber bands I use for suspension. Seems to work fine as I usually have no problem getting off the ground or back on.
Rick
ps: Nice job on the repair!

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RE: Hangar 9 Fokker DVII - 9/26/2012 12:02 PM   
ramboman


 

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Status: offline 		I drilled my wheels thru and replaced the axle with a stronger one...
No problem...

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RE: Hangar 9 Fokker DVII - 9/26/2012 9:15 PM   
rowdyjoe


 

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Status: offline 		I forgot to mention that I replaced the axle with roughly same diameter rod but, stiffer.  I cut it a bit shorter than the stock axle and it's working out well.  It takes some fiddeling around with the internal collar to get it right but, mine seems to be working OK.  After adding the collars to hold the axle still, it should work much better.

Looks like you guys have already figured all of this out but, wanted to share my solution.

RJ



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RE: Hangar 9 Fokker DVII - 9/27/2012 3:46 AM   
Chris Nicastro


 

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Status: offline 		I put a brass tube ove the axle, soldered it, drilled a cotter pin hole, put the wheel back on and cotter pinned a fake nut to the out side. It looks like there is an axle castle nut keeping the wheel on.
This took out any wheel play and provided a scale detail.
I use bungey cord for suspension and its really effective.
If you need a photo I can post one.

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RE: Hangar 9 Fokker DVII - 9/27/2012 4:24 AM   
rowdyjoe


 

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Status: offline 		Sounds good Chris.  I'd like to see it if you have a picture. 
I should probably take a picture of mine and post it for anyone who would like see it. 
My priority at the moment is getting the engine running correctly on my Camel but, I'm waiting for parts so, I may have time to mod. the left wheel.  However, our weather looks good for the next few days and I'd rather be flying than fixing. 

RJ



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RE: Hangar 9 Fokker DVII - 9/27/2012 2:12 PM   
Jaybird


 

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Status: offline 		Chris,

A picture is always helpful!

Jaybird

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RE: Hangar 9 Fokker DVII - 11/20/2012 4:32 AM   
rowdyjoe


 

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Status: offline 		Looks like this thread has gone dormant for a few months so, I might as well give it a kick and see what happens.

I flew my DVII a couple of weeks ago and all went very well.  The Saito FA-80 is doing a fine job and the bird is holding up well.  I've figured out that she likes take-offs and landings from the grass rather than the concrete.  She still tries to veer off course on takeoff but, it's easier to correct before she gets out of hand.  Landings are a breeze in the grass.  She tracks straight and true and those big wheels roll right over the rough stuff.  She taxis well with the tail wheel mod.
I've been flying her with a 2 oz. heavy hub but, she acts a bit tail heavy so, I removed the 2 oz. and installed a 4 oz hub.  If it turns out to be too much weight, I'll replace the 2 oz. and add some sticky weights to the engine box.
The FA-80 pulls her along at very scale speeds but, there's not much verticle.  Loops, rolls, etc. are attainable if I build up a little speed first.  She's fun and relaxing to fly and I plan to do a lot of it with this bird.

RJ




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RE: Hangar 9 Fokker DVII - 12/22/2012 4:51 AM   
rowdyjoe


 

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Status: offline 		Hello to the ....crowd?  Where has everyone gone? 

Oh well, here's an update on my DVII: 
I took her to the club field today and got about 4 good flights.  It was frustrating at first because I couldn't get the engine tuned correctly.  Finally had to take the cowl off and adjust the low end and that did the trick.  The little FA-80 came to life and was turning the 14x6 wood prop at 8300 RPM.  I hot rodded around a bit on the first flight and ran out of gas after about 9 1/2 min. flying mostly wide open doing loops, rolls, etc.  The dead stick landing was uneventful except for the applause on greasing the landing ...in the grass of course.    She is much easier to handle on takeoff or landing when on grass.
The next few flights were somewhere around 3/4 throttle or less.  It's amazing how little power this bird needs to fly well.  At 1/4 throttle she cruises along very nice and turns easily with shallow banking.  She's just a big old lazy kite.    I landed with approx. half of a tank of fuel remaining on the last 3 flights (10 min. each). 
Concerning aerobatics, her rolls are more like barrel rolls and she requires a little dive to pick up speed to do a loop.  She will fly inverted with much effort and almost has enough power to perform an inverted immelman.  Of course, that' not what she's meant for but, she does her main job very, very well.  Looking good on slow fly-bys and wing over turns.  She dives very well and picks up speed quickly so, watch your altitude when coming down hill.  She will spin but, wraps up pretty tight and, again, she comes down in a hurry. 
I have a lot of fun flying this one and consider it a keeper.  She's a great conversation piece and impresses everyone when in the air.

RJ

PS:  I tried the 4oz hub and didn't like it so I replaced it with the 2oz. and will stick with it.




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RE: Hangar 9 Fokker DVII - 12/23/2012 2:26 AM   
Azzir325


 

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Status: offline 		Still here, RJ, and reading every post. Just don't have much to say I guess.

Glad you're getting some flights in. It's the slow season up here in NY, AKA the building season. I DO get out once in a while. There's a group I fly with on Sunday mornings at the local HS parking lot. We mainly fly smaller electrics since the fingers tend to freeze if you spend time assembling a bigger plane, and if you get glow fuel on your hands, forget it! LOL. I also have a club which flys indoors twice a month too, so I don't get too rusty. And speaking of building season, I have a small project going on, a Pat Trittle Dumas DH 4, and have ordered a Vailly Aviation Stinson L 5 kit in quarter scale from Precision Cut Kits in NJ which I am expecting in January. My hope is to have the Stinson flying for Warbirds over Delaware next July. I think building the Stinson will be easier then the damn Trittle DH 4! I have a build thread on it if you're interested.

http://www.rcuniverse.com/forum/m_11324436/anchors_11327497/mpage_1/key_/anchor/tm.htm#11327497

Merry Christmas and Happy New Year to all!
Rick

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RE: Hangar 9 Fokker DVII - 1/27/2013 8:56 PM   
mr.magoo54


 

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Status: offline 		          I have one of the ECOMrc fokker D-VII. I wouln't recommend one of these planes to anybody. The material is of very poor quality,they left half of the building supply's out
like Control horns,control linkage, gas tank and I lost count of how many nuts and bolts were not there. I had to romove the dowel pins in the wings so that I could sand
the ends of the wings so ther wouldn't be a gap you could drop a nickel through. The botttom wings had the same problem. The instruction manual , you just need to
throw that away. I still don't know what the CG is suppost to be. The manual said 2 different amounts ,114mm and 143mm from leading edge. Your guess is as good as mine
I have been around the RC communty for several years and have build everything from plans to ARF's and this plane has to be one of the most disappointing plane's
I have ever layed my hands on. If anybody out there has build and flown one of these planes I would sure like to know what they set there CG at.

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RE: Hangar 9 Fokker DVII - 2/3/2013 3:49 PM   
handyman 220


 

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Status: online 		Hope someone is still reading this forum. I just picked up a DVII, after assembling the landing gear I have at least 1'' of music wire protruding from each side. On the pics I see posted it doesn't look like others have this much axle showing. Do I cut the extra off? I realize I need some space between the wheel and the landing gear legs but this much seems excessive.

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RE: Hangar 9 Fokker DVII - 2/3/2013 5:02 PM   
bobhammerhead


 

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Status: offline 		Its been few years since I built my DVII and if memory serves me correct, I remermber cutting my axles. One sugestion I would make is to dull coat everything before assembly. It made a world of difference in appearance. Kept it from looking like a toy. (imho)
Sure do miss the old bird. A sweet honest flyer. Good luck with your build.


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RE: Hangar 9 Fokker DVII - 2/3/2013 11:04 PM   
rowdyjoe


 

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quote:

ORIGINAL: handyman 220

Hope someone is still reading this forum. I just picked up a DVII, after assembling the landing gear I have at least 1'' of music wire protruding from each side. On the pics I see posted it doesn't look like others have this much axle showing. Do I cut the extra off? I realize I need some space between the wheel and the landing gear legs but this much seems excessive.



Music wire axle?  You must have bought the park flyer version.  This thread is devoted to the 64" WS version and, believe me, the axle is not made of music wire.  In fact, I replaced mine with stiffer rod because the stock axle was too easy to bend.

RJ




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RE: Hangar 9 Fokker DVII - 2/3/2013 11:20 PM   
handyman 220


 

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Status: online 		I'm assuming it is supposed to be music wire. I do have the 64'' DVII. Any how, I have already cut 1'' from the axle and the wheels are closer to the landing gear legs. It looked ridiculous with the wheels hanging out the way the manual tells you to do it.

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RE: Hangar 9 Fokker DVII - 2/4/2013 12:53 AM   
willey



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quote:

ORIGINAL: handyman 220

Hope someone is still reading this forum. I just picked up a DVII, after assembling the landing gear I have at least 1'' of music wire protruding from each side. On the pics I see posted it doesn't look like others have this much axle showing. Do I cut the extra off? I realize I need some space between the wheel and the landing gear legs but this much seems excessive.


I cut/shortened them down, just remember you have to get to the "O" Rings, plus I added a washer on the inside.

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RE: Hangar 9 Fokker DVII - 2/4/2013 1:09 AM   
handyman 220


 

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Status: online 		I was also thinking of adding a washer and wheel collar to keep the o-ring from rubbing the wheel. I like the color mods you did to yours, little touches to make it yours.

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RE: Hangar 9 Fokker DVII - 2/4/2013 1:14 AM   
willey



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Status: offline 		for the inside u just need the washer, works well. but make sure you notch the axle for the wheel collar inside the rim/wheel. then you'll be good to go.

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RE: Hangar 9 Fokker DVII - 2/4/2013 1:20 AM   
handyman 220


 

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Status: online 		Willey thanks for the help, I did file a flat spot for the wheel collar. Just have to find a washer for the other side of the axle. Looks 100% better with the wheels tucked in closer to the landing gear legs.

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RE: Hangar 9 Fokker DVII - 2/4/2013 1:26 AM   
willey



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Status: offline 		your welcome, yes much better. i have flown many types of models and this one is right up there, great flying model.

Here is a vid I put on youtube if you would like to see...

http://www.youtube.com/watch?v=kwJlpcUfLKE&list=UUVXMMMGbgBJBEVTYlqqH4Ug

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RE: Hangar 9 Fokker DVII - 2/4/2013 1:48 AM   
handyman 220


 

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Status: online 		Very nice!!

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RE: Hangar 9 Fokker DVII - 2/7/2013 4:58 AM   
rowdyjoe


 

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Status: offline 		Sorry about the confusion handyman.  Music wire to me indicates something small.  The axle is too long and needs to be cut.  It's also soft and it won't take too many hard landings before it bends.  I replaced mine with harder material after the 2nd trip to the field.  She looked like a duck waddeling down the taxi-way. 
Oh, and those big, good looking, plastic wheels will break.  I repaired one by drilling through the mounting studs and holes and using small bolts and nuts to hold it together.  H9 doesn't make parts for this bird anymore but, there are a few on Horizon's site but, they are getting fewer.  There are some after-market wheels available so, if/when you need them you'll have to shop around a bit.

Everything Willey told you is right.  The wheel collar on the inside is a good idea because it keeps the wheels from sliding left and right on the axle which can cause some very exciting take-offs.  It can get especially squirrelly in a crosswind. 
I added a steerable tale wheel to my bird because our club field has a beautiful 480 ft. concrete runway.  However, I've learned that my DVII much prefers the adjacent grass runway to pavement.  If the wind isn't straight down the runway it weather vanes very quickly on pavement.  The grass helps to keep it from going astray.  Once the tail is up she flys right off.  In the air, lead with rudder and your turns will look very good.  She only has two ailerons and they make her bank well but, the rudder does the turning. 

Once airborne it's a beautiful flyer.  I have a Saito FA-80 mounted on mine and it provides very scale power with enough left over for a zooming loop and/or immelman.  Rolls look more like a barrel but, she will fly inverted with concentrated efffort.    I get a lot of complements on it at the field when she's in the air or on the ground. 
Landings are easy as she will slow down to a crawl but, watch out for crosswinds and be sure to keep the the elevator stick back once the tail is down or she can flip over on her nose.

I know you'll enjoy yours once you get her finished. 

Best of Luck,
RJ



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RE: Hangar 9 Fokker DVII - 2/7/2013 5:05 AM   
ramboman


 

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From: waterloo, AR, BELGIUM
Status: offline 		About mine:
* replaced axle and external wheel colars
* torque 4014 with 15*8 prop 1200W
* 6s2p a123 under the hood
* excellent plane.

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