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Yes, Kelly....my series 2900 DCOE throttlebody also bolts right onto my straight Atkins manifold....only difference appears to be that mine is a single rail, two injector throttlebody, where yours has the 4 injectors.

I am extremely pleased with the way the engine runs and performs with this throttlebody.My idle is very smooth at 800 rpm's (400 prop rpm's) and transition to midrange and WOT is really smooth. I almost hate to risk losing the great running characteristics by messing with different injector throttlebodies... I was just thinking (there I go again) that there might be some redundancy advantages of having more injectors. Maybe I should leave well enough alone and just enjoy flying. Take care, and thanks again for all the TB info. Paul Conner

----- Original Message -----

From: Kelly Troyer

To: Rotary motors in aircraft

Sent: Friday, May 06, 2005 9:45 PM

Subject: [FlyRotary] DCOE to ATKINS Manifold

Paul,

   Forgot to mention that the DCOE throttlebody bolts right up

to my straight "ATKINS" manifold !!

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

-------------- Original message from "Russell Duffy" <13brv3@bellsouth.net>: --------------

Thank goodness....wouldn't want it to be too easy. Paul

I just looked up the details on this. The 2900 is a "DCOE" type unit, which I believe relates to a standard size of carb that was popular before I was born. It doesn't appear that this size TB comes with an option to have 4 injectors, but to be sure, you'd have to ask TWM. You probably don't want to mention airplanes, since they've been fairly against the idea in the past.

The 4 injector unit I have is the 2930 "IDF" type unit. Again, ancient history standard sizes. These appear to all be 4 injector units, in sizes from 40 to 55*

Cheers,

Rusty (still working on the single rotor ebay guy)

*- Yes, I know there are other sizes :-)