Echo 21.2cc rpm #'s?
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Echo 21.2cc rpm #'s?
I just did a search of the last years posts trying to find out what an Echo 21.2cc is turning for rpm. Many hits but not much hard info.
I'm using an APC 15-6 and getting 7600 rpm full throttle and 2000 rpm idle.
Thanks for any info.
Doug
I'm using an APC 15-6 and getting 7600 rpm full throttle and 2000 rpm idle.
Thanks for any info.
Doug
#2
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RE: Echo 21.2cc rpm #'s?
That seems a little low. If I remember correctly, I was getting about those rpms with my last 21cc Kioritz, but with an APC 15x8 and at 4200' altitude and 90+ degrees. I don't remember now, did you gut the exhaust and provide two outlets of about 7/16" i.d., and install a larger carb?? My hopped up 23.6cc Kioritz turns a 16x8 at 8200 rpms here at this altitude. Pulls a 10.5 lb. plane straight up a long ways!!
Amsoil is supposed to be good at 100 to 1, though several people have recommended running it at around 40:1. That's what I'm running right now to see how I like it. You probably won't notice any benefit with higher octane fuel, and might notice a decrease. These little engines just don't need it.
Good luck, and keep us posted,
AV8TOR
Amsoil is supposed to be good at 100 to 1, though several people have recommended running it at around 40:1. That's what I'm running right now to see how I like it. You probably won't notice any benefit with higher octane fuel, and might notice a decrease. These little engines just don't need it.
Good luck, and keep us posted,
AV8TOR