stunthanger.com

Speed,Combat,Scale,Racing => Combat => Topic started by: David Ruff on March 30, 2018, 09:07:52 AM

Title: Fox 36x baldie
Post by: David Ruff on March 30, 2018, 09:07:52 AM
Again, pardon my ignorance about combat stuff, but I see this engine has NO spray bar.  Just open venturie.

How does this work??

(https://i.imgur.com/sGAFx7uh.jpg)

Title: Re: Fox 36x baldie
Post by: mike londke on March 30, 2018, 11:22:11 AM
Use a bladder with a remote needle.
Title: Re: Fox 36x baldie
Post by: john e. holliday on March 30, 2018, 11:38:07 AM
There is supposed to be a needle spanning the opening in side the intake.  Yes you have to run it on pressure,  crank case,  bladder or pacifier.   I used 9-7 props on mine. H^^
Title: Re: Fox 36x baldie
Post by: Tim Chenevert on March 30, 2018, 06:59:34 PM
Here is a picture of mine. Hope this helps. I run on a pacifier. Tim
Title: Re: Fox 36x baldie
Post by: Andre Ming on March 30, 2018, 10:29:06 PM
Duke did not want a fat brass spray bar across the venturi to further encumber the inflow of air. So, he came up with this rather ingenious solution. Under pressure, the fuel will flow fine and and the needle will meter the flow fine. The biggest challenge was in the manufacturing process where it was important for the needle to mate properly with the opening on the inlet.

Title: Re: Fox 36x baldie
Post by: Tim Chenevert on April 02, 2018, 04:50:49 AM
Once you find the sweet spot with the needle valve setting, that engine will really run! Tim
Title: Re: Fox 36x baldie
Post by: Bob Mears on April 02, 2018, 07:30:24 AM
Those were a bad idea. they blew fuel 360 degrees and rarely would center in the jet. Your best option is to remove that needle and install a standard. Super Tigers worked great. I soldered a small brass tube bent 90* toward the venturi, and ran a remote OS Max needle.