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Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

More info on this engine!




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Post  Ken Cook Mon Jun 22, 2020 5:11 pm

We took out the Sioux for it's first flight today. I wasn't so keen on trying the diesel for the initial flight. My son was not going to take no for a answer. The Davis Diesel head blew out the disc which is why at the beginning of the video there's a pause and then the engine is started again. I'm going to try the brass shim stock for making discs vs the Teflon units that last from 5 seconds to 15 minutes.  My son was ecstatic as he's been wanting to do a diesel flight for years. The Davis head was removed and the RJL head was used for the flight. We also put the prop on backwards and I'm glad we did. The plane went a good 300 plus ft high. Prior to me leaving the house, I shrunk up the covering which resulted in the outboard tip having some washout. I'm glad I left it in because it caused the right tip to drop in the glide and spiral down rather quick. I need to open up the turn in the right hand glide after the engine stops.

https://www.youtube.com/watch?v=0p4KMvOXYCI The back half of the video is our .020 bipe which I thought for sure was going to get lost.
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Post  rsv1cox Mon Jun 22, 2020 6:28 pm

Nifty Ken, almost lost the second flight, touch and go for a minute there.

Last time I tried this I never saw it again.

Nice father/son time.

Bob
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Post  Ken Cook Mon Jun 22, 2020 8:13 pm

Bob, these sheet balsa wing planes can be a bit tricky at times. I think what might be happening is that one side of the wing has a tendency to warp. This is more than likely due to the dope. I've heated this wing panel and twisted it numerous times. As a result, my trimming is changing from week to week. Typically the plane goes into a tight left turn rather quickly. It didn't do that yesterday and as it headed towards the trees my concerns were growing. I don't own many Pee Wee engines and I certainly don't want to lose it.
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Post  Kim Tue Jun 23, 2020 8:15 am

COOL STUFF !!!!!!!!!!!! Damn! Damn! Damn!
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