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        Question OS 95 or 1.20?

#1 GRIPDOG Oct 01, 2012 09:22 PM

OS 95 or 1.20?
Iím either going to get a new OS 1.20 or a OS 95. for the 9lbs. Edge 540 Iím building.
Is there a big difference in fuel consumption between the two engines.

#2 GRIPDOG Oct 02, 2012 09:39 AM

Thanks for all your replys. Guess I'll go with the 1.20

#3 I TOBOR Oct 02, 2012 10:16 AM

Grip, how about some sound late advice, when in doubt, pick more cubic inches, it works every time.

#4 GRIPDOG Oct 02, 2012 11:16 AM

Will do. Thanks Tobor. :)

#5 Gary Cee Oct 02, 2012 11:21 AM

The OS 95 is still only around in small numbers but all the tests say it is a fine engine . Check the weight difference . If your plane winds up tail heavy , the added weight of a bigger lump may be OK . It the plane is already nose heavy weight may be a detriment. Bigger engines often shake a bit more as well as the requirement for a heavier fuel load . Some planes fly well "on the wing" others make better use of a bit more power . The Edge can probably make good use of more power so long as the weight/balance issues are resolved first .

Sometimes it takes a bit more than 24 hours for people to offer advice . It is free after all .

#6 KaP2011 Oct 03, 2012 08:25 PM

I just got a new OS 95v the other day and based on the manual it should be pretty good on fuel consumption. The manual states that a 10oz tank should last 12-15 min. However, if I had a 9lb Edge 540 I would go with the 120.

#7 LowlyElevated Oct 07, 2012 11:44 AM

Never had any experience with the 95s, but I do have one of the older pre-fix 91s. I stuck a .46 needle vavle on it 4 months ago and now it it starts on the first spin witht the starter every time. It will pull my 60 size u-can-do vertical all day.
However, It refuses to run on anything I have tried but a 14-8 prop. That is the magical ticket, it seems.

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