Author Topic: What motor for Fokker? (Read 2998 times)

Glenn (Gravitywell) Reach · « **on:** October 18, 2010, 09:23:45 PM »

Hi all. I have a Black Hawk Model's reproduction of the Sig profile Fokker D-7 and was wondering if a McCoy .19 would be a good choice for it. It has a wingspan of 33" and it says .19 to .35 size. I am not married to the engine for this plane, but thought it would be nice to have a vintage motor in her. Unfortunately my McCoy .35 was destroyed in an unfortunate accident.

Anyone out there that has built this plane and has any suggestions, please feel free to jump in.

Clint Ormosen · « **Reply #1 on:** October 18, 2010, 09:30:27 PM »

A McCoy 19 would fly it, but it would be weak. I'd go for at least an LA or FP .25. Or if you want to stick to period engines, a ST 35 or something like that.

wwwarbird · « **Reply #2 on:** October 18, 2010, 09:44:53 PM »

I'd suggest an Axial double-brushless XPZ-II triple-wound ZIPOphonic motor with a 15000 cell LIPOsuction battery wired in double parallel with a Mega Super Xylon timer and BFD toggle...or a good running .25-.35.

Glenn (Gravitywell) Reach · « **Reply #3 on:** October 18, 2010, 11:09:41 PM »

Is that Axial double-brushless XPZ-II triple-wound ZIPOphonic motor made by McCoy or Fox?

I do want to keep it period if possible, but can change my mind if convinced otherwise. I do have an Enya .29, but I thought that looked a little modern for what I wanted.

So that being said.....does anyone have a used McCoy .35 (does not have to be pretty) that they want to trade for an Enya .29 thats in pretty good shape?

wwwarbird · « **Reply #4 on:** October 19, 2010, 12:11:32 AM »

Both companies did R&D on the Axial concept but quickly aborted those plans when it was realized that the type of product was more desirable for, and about as exciting as, electric shavers and light switches.

Seriously, I really like your "period" approach idea on this model. I'm getting ready to do the same with a Walter Umland "Super Combat Streak" kit, it will be my next project after I finish the Brodak Zero I'm currently working on.

With your model though, I would probably use an FP.25 or .35 or similar, just something smoother than the old "shakers", and that also smells right.

Keep us posted!

Glenn (Gravitywell) Reach · « **Reply #5 on:** October 19, 2010, 12:27:50 AM »

I would love to see some pics of your Zero. I have heard that it is the best flying plane in that series. I really want to get one, one day. Besides....Zero's just have that "cool" factor.

builditright · « **Reply #6 on:** October 19, 2010, 12:30:45 AM »

had an Enya .29 in mine back in the mid 70's,
so if I was to make one, that's what I would use
simply a memory thing

Leester · « **Reply #7 on:** October 19, 2010, 04:11:54 AM »

I've got a Max 30S set up for mine.

Paul Smith · « **Reply #8 on:** October 19, 2010, 04:51:48 AM »

I have a Sig SPAD, which is about the same plane. First rev: red & gold. Current finish: Eddie Rickenbacker.

It needs a 35. In the past a Veco 35 went well. The current engine is an OS H-35. Spearmints with 15's & 25's were fellures. The plane needs nose weight and POWER. ref: Tim Allen.

dennis lipsett · « **Reply #9 on:** October 19, 2010, 08:45:43 AM »

I built the SPAD and a flying partner did the Fokker. An LA25 with a tongue muffler was used on both of them. Mine was finished with Brodak dope and polyspan and the other with ultrakote and rustoleum.
The models were fast and aerobatic, not to say that they are pattern material, but they do nice round maneuvers, wingovers and inverted flight. A mccoy 19 will fly the model just on shorter lines, say 52 to 55 foot. The big cavat on these is the landing. I've also checked with others that have had these models over the years. They have the landing qualities of a duck with a hernia. with a bad glide ratio they dont float into a landing and the gear placement will make it hop or flip over, usually both. Some correction is necessary in this . Other then that it's fun to fly.
Dennis

David Shad · « **Reply #10 on:** October 19, 2010, 09:06:20 AM »

PM sent Glenn.

Bill Little · « **Reply #11 on:** October 19, 2010, 09:15:47 AM »

Hi Glenn,

As Dennis alluded to, they tend to be tail heavy and do not glide well!

I built a Fokker back inthe day. Kept it as light as I could, but it was a very thin airfoil and not a ton of wing area, so it needed more engine that would actually be imagined. It looks like a .19 should fly it well, but the old .19s were not really up to the task except for a Veco 19BB. Not to say they do not *fly* well, though! They are a blast to fly. The original concept (as you probably know) was to develop a WWI combat event. It never really caught on, nationwide I guess.

With a period .29-.35 they will fly a bit fast (and they have to), but like I said, a lot of fun!

I gave mine to a "newbie" later on since flying level and doing *stunts* was pretty easy with it once balanced. Plus, it looks pretty neat in the air!

Mongo

Glenn (Gravitywell) Reach · « **Reply #12 on:** October 19, 2010, 10:29:29 AM »

Thanks to everyone for their help and the pics. I live and fly pretty much alone and seeing others pics sort of makes me feel like I'm a part of a greater whole. Welcomed into the hobby room as it were. Much appreciated.

It looks like the Enya .29 will be going into mine......unless I change my mind that is! LOL Maybe a newer (lighter) motor would be the better bet so I don't have to add as much lead to the tail. Will save that .19 for something else.

Dennis mentioned gear placement to slow down bounce and flipping over......how far forward should the gear be moved?

TTFN

Michael Boucher · « **Reply #13 on:** October 19, 2010, 02:43:19 PM »

Hi Wayne, What engine are you planning to put into the Combat Flite Streak?

Paul Smith · « **Reply #14 on:** October 19, 2010, 02:47:46 PM »

After about 20 years as 2-liner, I retroftted mine to 3. One thing about today's engines: throttles are FREE (actually a cost saving vs buying a venturi and NVA). With a throttle you can make a nice, well-controlled touch & go, not the old 2-line stall & fall.

wwwarbird · « **Reply #15 on:** October 19, 2010, 06:11:47 PM »

Quote from: Michael Boucher on October 19, 2010, 02:43:19 PM

Hi Wayne, What engine are you planning to put into the Combat Flite Streak?

Michael,

Right now I'm thinking a McCoy .35 Redhead that I recently got ahold of. I'm not 100% set on it though.

Bill Little · « **Reply #16 on:** October 19, 2010, 06:47:08 PM »

Quote from: wwwarbird on October 19, 2010, 06:11:47 PM

Michael,

Right now I'm thinking a McCoy .35 Redhead that I recently got ahold of. I'm not 100% set on it though.

I am totally breaking with tradition (especially since there is very little available space for a tank) on MY Combat Streak. My first one back around 1971 was powered with a Fox .35, and I have about any "period engine" to use that you can think of (including a Russian .35 from back then) to use. BUT, this one will use a tried and true OS .20FP BBTU.

Less than three ounces (which is about all the combat streak has room for) of fuel needed to fly the pattern.

Mongo

dennis lipsett · « **Reply #17 on:** October 19, 2010, 07:18:45 PM »

Quote from: Bill Little on October 19, 2010, 06:47:08 PM

I am totally breaking with tradition (especially since there is very little available space for a tank) on MY Combat Streak. My first one back around 1971 was powered with a Fox .35, and I have about any "period engine" to use that you can think of (including a Russian .35 from back then) to use. BUT, this one will use a tried and true OS .20FP BBTU. Less than three ounces (which is about all the combat streak has room for) of fuel needed to fly the pattern.

Mongo

Bill,
Just using your comment about all you can get in fuel to do the pattern. I'm always curious that people build models that were never meant to be serious pattern models and as such do not have sufficient tank capacity. These were combat,sport and yes they will stunt but are not serious stunt machines.
I'm doing a Combat streak, bought one of walt Umlands excellent kits, and have no intention of using it as a 'stunt' machine, it isn't one as I said.
Still I guess everyone needs whatever challenge they can get in the hobby and I guess a 500 point flight with a streak will do in a pinch. And yes i know that a lot of people have done it with all of the other Streak variations. Still I'd rather build something a little more specific for the job.
Dennis

jim ivey · « **Reply #18 on:** October 21, 2010, 01:35:36 AM »

the macoy is ok a knb or os would be better or thunder tiger, well that might rip of the top wing

. if you like bipe sport planes. build a ""manx-cat" combat biplane. you'll have to fly it on grass. be sure and build it strong too. when it lands it tumbles to a stop.

it was a fun airplane I forget who jitted it. you may be able to get plans though . Check it out. jim

jim ivey · « **Reply #19 on:** October 21, 2010, 01:59:21 AM »

I should have checked on line len has short kits this site to see. still a cool lookin plane and fun to fly jim

jim ivey · « **Reply #20 on:** October 21, 2010, 02:13:53 AM »

google manx cat model airplane

dennis lipsett · « **Reply #21 on:** October 21, 2010, 10:50:57 AM »

Quote from: jim ivey on October 21, 2010, 02:13:53 AM

google manx cat model airplane

Jim,
You don't have to google it. It's available as a short kit from Walter Umland. Here is the prototype

wwwarbird · « **Reply #22 on:** October 21, 2010, 11:20:50 PM »

Quote from: Gravitywell on October 19, 2010, 12:27:50 AM

I would love to see some pics of your Zero. I have heard that it is the best flying plane in that series. I really want to get one, one day. Besides....Zero's just have that "cool" factor.

Did you get my Email Glenn?

Glenn (Gravitywell) Reach · « **Reply #23 on:** October 21, 2010, 11:28:25 PM »

Hi Wayne. Yes I did....it was in my junk folder so I missed it. Really sorry about that. Very cool project you have there. Would really like to see some more pics as you progress.

Again....sorry for that. n~H^^