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Speed,Combat,Scale,Racing => Speed Talk => Topic started by: bob whitney on November 25, 2017, 08:36:32 AM

Title: Brodak Perky
Post by: bob whitney on November 25, 2017, 08:36:32 AM

  Just scored a new nelson 15,and working on building a lighter carbon Perky .looking to taking back my #1 standing

Title: Re: Brodak Perky
Post by: Ken Burdick on November 25, 2017, 10:18:34 AM

your old one was pretty fast.....

Title: Re: Brodak Perky
Post by: bob whitney on November 25, 2017, 11:15:58 AM

engine was like me (old) one of the first big crank nelsons .the bearings are spinning in the case and piston was getting loose in the sleeve.

Title: Re: Brodak Perky
Post by: Motorman on November 26, 2017, 08:45:12 AM

blank

Title: Re: Brodak Perky
Post by: bob whitney on November 27, 2017, 08:07:29 AM

for the size of the wing ,really not worth the effort

Title: Re: Brodak Perky
Post by: Paul Smith on November 27, 2017, 08:44:40 AM

Correctomundo, sir.

You need the outboard heavy and that only leaves about 8" of exposed inboard wing on which to save weight.  And you still need the inboard strong enough to hold the leadout guide.

My next build will have a spruce spar and balsa wood.  When it's sanded to shape I will will weigh it and consider cutting holes in the inboard.