Happy to share engine tech ..

Engine an RCMK S254 EVO, fully modified with all the tricks. ( Stock stroke & bore )
Water cap a Decortin smooth top sand blasted and painted.
Intake manifold the thin M&D with a WT-771 carb, intake bell a RCMK part.
Red tube a direct primer off the carbs purge circuit, 1-2 pull starts every time once you know how hard to pump the bulb once fuel is discharging.
Zenoah EZ start fitted, Zip-Kits Super collet for drive.
Gizmo mounts and throttle linkage.
Pipe & header a custom internal stinger by Don Shanks
Muffler one of my own creations ( Sub 85 DBa at WOT )

backlash looks great!!! I'm building one myself with the newer kit and was confused on something. I was wondering if you could pm me for a few questions?

Thanks, John

Public board .... just ask here ?

I agree Scott.

Q & A in a public board is a benefit for all of us.
Simpros: remember that there is no such thing as stupid questions. Only stupid answers.

Hi scott i got to ask how does the wt-771 carb work with your engine? Is the line in the primer blub a return line on the 771? I have a new 27cc sikk and was trying to find out how to run one fuel line from the IV Bag?

The discharge port of the purge primer circuit can be:
*Blocked off with a plug such as an antenna cap ?
*Be connected back to tank, tho bad idea IMO with bags because air will be pumped while fuel is getting in and out. Hard tanks not a problem.
*Be used as way to direct prime engine as shown above.

As to the 771 carb in general, Find them far superior to the 257 if running mod engines at 18K+ rpm levels. Personally REALLY LIKE the 771 carb.