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Cox .020 Tee Dee Questions

Cox Engines Forum  :: Engines :: Cox Engines

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Help! Cox .020 Tee Dee Questions

Post  duke.johnson Tue Aug 11, 2015 4:30 pm

Now that I have a couple .020 TD's, I have a few questions.

1.) How much nitro are you running in your .020 TD?
2.) What prop are you running?
3.) What kind of RPM's are you getting?
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Help! Re: Cox .020 Tee Dee Questions

Post  Cribbs74 Tue Aug 11, 2015 6:05 pm

Nitro at 25% or more, 4.5x2.5 prop.

I have never tached one, they turn up pretty good though. The 3 blade Pee Wee prop can be used according to the instructions.

20-23K according the the manual.
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Help! Re: Cox .020 Tee Dee Questions

Post  duke.johnson Tue Aug 11, 2015 6:21 pm

Sweet, thanks. I used 15% yesterday, I'll bump it up to 25% or 35%. Do you add head gaskets like a .049?
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Help! Re: Cox .020 Tee Dee Questions

Post  Cribbs74 Tue Aug 11, 2015 9:41 pm

duke.johnson wrote:Sweet, thanks.  I used 15% yesterday, I'll bump it up to 25% or 35%. Do you add head gaskets like a .049?

Yep, if needed, I have never run more than one though.
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Help! Re: Cox .020 Tee Dee Questions

Post  1/2A Nut Tue Aug 11, 2015 11:26 pm

Here is my run with a Cox 4x2.5
30% nitro 20% castor

TD .020 3ch Lil Speedy 21in span exhaust throttle sleeve flying weight 5.3oz

Best pass 23.2K / 55 mph




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