Cox Killer Bee backplate

crankbndr Fri Aug 30, 2013 9:53 am

This is my latest corntraption, keeps me out of the bars. It removes the spray bar from the venturi, ready for tests, just need to come up with a way to mount it.

Cox Killer Bee backplate Img_2111

Kim Fri Aug 30, 2013 9:56 am

Cool !

**Cribbs74** Fri Aug 30, 2013 11:00 am

I really like that. Any chance you could do a writeup?

You might have to build a cage to mount that or use long screws and standoffs. Of course there is always the hole in the firewall option. Problem with that is NV adjustment.

Ron

microflitedude Fri Aug 30, 2013 12:51 pm

I made a similar sample a year or two ago, never attempted to start it though. Yours looks much better.

Cox Killer Bee backplate Custom10

pkrankow Fri Aug 30, 2013 1:29 pm

DUDE!!! I've been thinking about this too!

My idea is to take a sure start snorkle and put the TeeDee NVA on the top of that with the original venturi bored out to the reed seat diameter. I jut don't have parts yet.

Phil

anm2 Fri Aug 30, 2013 1:32 pm

crankbndr wrote:This is my latest corntraption, keeps me out of the bars. It removes the spray bar from the venturi, ready for tests, just need to come up with a way to mount it.

How does the venturi attach to the backplate? Andy

WingingIt74 Fri Aug 30, 2013 1:44 pm

That's pretty slick man!

cryo-one Fri Aug 30, 2013 6:54 pm

Another attempt

Cox Killer Bee backplate IGkHj6J

pkrankow Fri Aug 30, 2013 7:31 pm

What size are the threads on the tee dee venturi?

Phil

dckrsn Fri Aug 30, 2013 7:41 pm

Phil, that would be 1/4" x 32 tpi, like a standard glow plug.
Weird huh?

Bob

dinsdale Sat Aug 31, 2013 6:48 am

That's a really impressive idea. Do you think it would work with one of these carbies?
http://coxengines.ca/cox-.049-.050-.051-tee-dee-carburetor-assembly.html

crankbndr Sat Aug 31, 2013 7:14 am

Opening up the backplate for the TD parts I used progressively larger drill bits till till it screwed in, I had a backplate that had never been drilled for spraybar, I must have got it from CI.
Finding a way to mount it is difficult because of the problems Ron mentioned, the NV and fuel input are in the way for any bracket to mount to backplate so some kind of standoffs might work.

crankbndr Sat Aug 31, 2013 7:19 am

microflitedude wrote:I made a similar sample a year or two ago, never attempted to start it though. Yours looks much better.

Thats pretty cool, you must not have a way to mount or you would have run it. Maybe we can hold them in our hand. Very Happy

Just kidding, don't try that at home.

crankbndr Sat Aug 31, 2013 7:29 am

cryo-one wrote:Another attempt

Have you run this yet to see how it works?

crankbndr Tue Oct 01, 2013 8:37 pm

This idea was a failure, the venturi could not hold the needle valve body tight so when running the needle valve moved a lot.
When I held the NV in place for a steady run it turned 19.5K (25%N and 5/3 prop) but I can get that on a regular Killer Bee plate.
Back to the boneyard.

Cox Killer Bee backplate Img_2114

Sponsored content

Cox Killer Bee backplate

Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate

Re: Cox Killer Bee backplate