equivalent 4 stroke power
 

hi

just wondered what is the equivalent 4 stroke power is when compared to a 50 2 stroke with mini pipe. looking for a powerfull light 4 stroke.

thanks for any comments

RE: equivalent 4 stroke power
 

I would say the SA82 or the YS63. They both will turn a 14x6.

RE: equivalent 4 stroke power
 

I would agree with the Saito .82 or even the Saito .91. You can't compare props, since the two stroke needs a smaller prop to turn up and get on the pipe. I ran an OS .50 SX with a tower muffler on my UCD and like the performance better than the four stroke with the larger prop, more P-factor. But to each his own. IMHO it takes at least a .80 - .91 four stroke to match the output of a strong .50 two stroke.

RE: equivalent 4 stroke power
 

theres only two light weight 4 stroke powerhouses to be considering: ys 63 and saito 82. I`m still trying to deside witch one of them will be my next engine. look back in the glow engines forum for the post "ys 63 vs saito 82"

RE: equivalent 4 stroke power
 

go back to page six. "saito 82 vs ys 63 fz-s"

RE: equivalent 4 stroke power
 

Owning both the 63 and 82 Id say the 82 is alittle better but barley, it runs alittle higher RPM's with a 14x4w and its a tad light then the 63, but the 63 has great fuel economy, its a toss but IMHO the 82 is the better, And I promise the 50SX or 46AX dont compare with the 82 or 63 in absolute thrust.
A good 46-50 2 stroke will pull about 7 1/2 lbs of thrust, the 82 pulls 9lbs and the 63 about 8.9 lbs.

RE: equivalent 4 stroke power
 

Ah no. I measured a Webra 50 on minipipe (mousse can) pulling 9.75 lbs static on a 13-4 APC .

RE: equivalent 4 stroke power
 

did you tach that webra on the 13-4???

RE: equivalent 4 stroke power
 

13500

RE: equivalent 4 stroke power
 

I have a saito 82 as well and if you want to go simpler than the YS 63 than the saito is a good choice. The main differences between a good 50 and the saito is mostly in throttle transition; it is not faster but seems torqier (sp?) and the throttling overall is somewhat better.