RCU Forums - View Single Post - McCulloch 31cc w/ Rear Exaust and Carb, is it better?
Old 03-23-2006 | 02:22 PM
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SaCCaL72
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Default RE: McCulloch 31cc w/ Rear Exaust and Carb, is it better?

Flyjoe540,
I would be more than glad to share my numbers. This is my first conversion so I am a little new at this so bare with me. For the few readings I took this past weekend when I ran my converted Ryobi I was getting around 7700rpm give or take with the stock Walbro 1 needle carb and a MAS 18x8. Now I just ordered a new 13.5mm Zama 2 needle carb from Scott(poco242) in hopes that it will give me better control of the rpms on both ends. I am hoping to get out this weekend to the field, weather permitting, to run it again with the original carb and maybe I can give you a little better readings then when I receive the new carb I am going to compare. Please keep us posted on your results also.

Being new to gas and conversions, I am really interested in this gas/glow hybrid thing. Can anyone explain this to me in laymens terms on how it works, what needs to be done, and the advantages of it if anyone gets a chance. I see you save some weight. Do you get any more power out of the engine? Thanks in advance for all you help...

I am still going to post some pix of my conversion, just been busy car shopping for my better half and finally got one last night, thank God. I should have some time soon to take and post them.

ORIGINAL: flyjoe540

SaCCal72
first ,sorry to jump in on you like that . second what kind of rpm numbers are you getting on your conversion?
are you using the original single needle carb?what prop etc.?we are running the same engine and i want to compare performance figures with your engine if thats ok. the only difference is i'm running ch ignition with syncro any input is apreciated thanks