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Old Aug 12, 2014, 01:16 PM
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Joined Aug 2014
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Hi all,
Today I finished the Spitfire. I got him a great pleasure. Here is a link to my site: http://spitfire.vyjimecny.cz/. They are in Czech. I attach a photo.
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Old Aug 12, 2014, 03:14 PM
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Congratulations Petjan....you should have a great time with it.
ce
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Old Sep 23, 2014, 05:43 PM
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I'm at my wits end with the stock retracts. I've tried multiple servos, different pushrods & fittings, etc. They will not lock open/closed properly. Even tried two servos as one pilot here used.

Is there a (close) drop-in replacement servo retract I can use for this plane? Has anyone used the Durafly Spitfire retracts?

Thanks, -Lee
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Old Sep 23, 2014, 06:00 PM
WAA-08 THANK FRANK!
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Las Cruces, New Mexico, United States
Joined Jun 2002
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Change Sun e-retracts from many sources are what I used.. 512 size IIRC - up to 2.5kg models on a 3mm diameter strut. Mechanical retracts are a nightmare that I don't ever want to revisit. E-tracts all the way, baby.
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Old Sep 24, 2014, 12:39 AM
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Joined May 2008
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The early Haikong Spit didn't have retracts but I modded it with some Hobby King HKD-312 e-tracts and they worked fine.

http://www.hobbyking.com/hobbyking/s...stem_1pc_.html


Good luck
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Last edited by capteasy; Sep 24, 2014 at 12:47 AM.
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Old Sep 27, 2014, 08:03 AM
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Ready for maiden

I ordered the electric gear for the Spitfire but it'll be a while before it arrives. Until then, I locked the stock gear down in place and took the plane out for its maiden.

Flight was squirrely. She was pitching up hard but not acting tail heavy. I put half down trim to level her off. She had no pitch movement with or without throttle (usually a sign you need down-thrust). The plane's CG is right on at the 90mm mark (per instructions). I had a similar problem with a plane that I thought was tail heavy but turned out to be the horizontal stab had too much 'up' built into the construction. In this case, everything looks level so I have to guess she's tail heavy. Judging how easy this plane tips over with the gear down, I'm hesitant to add too much or she'll keep nosing over on take-offs and landings.

She flew well once the trim was set. Suprised how gentle she was at low throttle. Landing was long 'cause I couldn't get her to come down.

A few more tweaks, a spinner, electric gear, air holes and then she'll be complete.

-Lee

(anyone catch the build mistake in the photo? )
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Old Sep 29, 2014, 11:28 AM
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Flew a second/third flight on the Spitfire and it still needed down trim. Read back through this thread and found many of you pushing the CG forward to 75mm. Guess I'll add another ounce (or two) to get it there. Sadly, by doing this, I'll have to bend this gear way forward to keep it from nosing over. When the electric gear comes in, I'll be cutting up the wing to position the gear further back when retracted so it'll shoot forward when down.

Hopefully in a few more flights, I'll have her tweaked just right.

-Lee
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