New Evolution 10cc gas engine
#2201
My simple comparison of the Stock muffler against the OS muffler with regards to sound? The 10cc in this video with the OS mufflers is running on its first tank and is running really nice on a APC 10x6 run-in prop at max RPM at almost 13k... amazing for a brand new engine... very easy to tune and very reliable..
Last edited by flypilot; 03-13-2018 at 06:15 AM.
#2205
Yes I agree, it definately changes the harmonics, will make a new video once I have them both in a plane and at the field...that changes the sound quite alot... just gotta wait for the all the snow to melt first
#2206
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I have an older non pumped version of this engine. It has been in the plane for several years and only started and ran once. Just wondering if I shouldnt just go ahead and buy the pumped carb and install a pressure port? I hope to join a club and finally fly it this season. Looks like the carb is around $35
thanks
Jeff
thanks
Jeff
#2207
I have an older non pumped version of this engine. It has been in the plane for several years and only started and ran once. Just wondering if I shouldnt just go ahead and buy the pumped carb and install a pressure port? I hope to join a club and finally fly it this season. Looks like the carb is around $35
thanks
Jeff
thanks
Jeff
I've two of the vs 1 engines and haven't had problems so continue to fly them with the non pumped carbs. If they were a problem, I'd upgrade them.
#2208
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Jeff... You didn't outline the specific reason the engine was run only once so it is hard to say if you should upgrade the carb.
I've two of the vs 1 engines and haven't had problems so continue to fly them with the non pumped carbs. If they were a problem, I'd upgrade them.
I've two of the vs 1 engines and haven't had problems so continue to fly them with the non pumped carbs. If they were a problem, I'd upgrade them.
Jeff
#2209
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Well, judging from all the complaints from the guys that have the non pumped version, I'd go ahead and convert the carb.
Pumped is always better than non pumped. It would be much more reliable. You don't want to crash just because of a flame out do you?
I sure do like my pumped version. Sounds like a harly Davidson to me...
Bob
Pumped is always better than non pumped. It would be much more reliable. You don't want to crash just because of a flame out do you?
I sure do like my pumped version. Sounds like a harly Davidson to me...
Bob
#2210
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I have an older non pumped version of this engine. It has been in the plane for several years and only started and ran once. Just wondering if I shouldnt just go ahead and buy the pumped carb and install a pressure port? I hope to join a club and finally fly it this season. Looks like the carb is around $35
thanks
Jeff
thanks
Jeff
#2211
I have one of the first examples of the Evo 15cc and fly the snot out of it. One of the frustrations people ran into, was that the fuel line provided with the engines was not much better than Tygon for the pressure tap line, and Tygon is unusable on the muffler, due to the heat. Simple solution, just use good old silicone fuel line on the vent line to the muffler, holds up just fine, you just can't use it on the carburetor line which is constantly filled with gas.
Pete
Pete
#2214
Muffler pressure does work with gas just as it has with glow for forty years.
#2216
Adding to what Brian said, a gotcha with these small gas engines on muffler pressure is staying with a fuel tank sized for glow. Large tanks produce larger swings in mixture settings and should be avoided and are not needed because gas consumption is less than half that of glow..
If the plane was designed for a 12oz tank when glow powered, a 6oz is all that is needed or should be used on gas.
If the plane was designed for a 12oz tank when glow powered, a 6oz is all that is needed or should be used on gas.
#2217
A flying buddy has the 10gx. The idle is good...top end great bit at half throttle the engine will begin to “hunt”. Revs increase then decreases. It’s got me foxed! I guessed that there may be some more crud and dirt in the carb diaphragm. It wasn’t running well ages ago so I did quick field carb maintenance which stopped the dead sticks...could it be something like that again or what?
#2219
#2220
#2221
If the diameter of the hole inside the socket is too small, it is easy to drill it out so it will fit over the crank stub nut. I have had to drill out several of my sockets because the hole would not fit over the threads of bolts.
#2224
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Yeah, the distance between mounting holes is 37mm. I need to space out my muffler about 1-3/8". All I can find is a 1/2" spacer.
Dubro makes an extension that can be drilled and cut to length, pn 213. Just not sure what the dimensions of it are.
Dubro makes an extension that can be drilled and cut to length, pn 213. Just not sure what the dimensions of it are.
Last edited by tman52748; 02-21-2019 at 04:33 PM.