700n

[WiscHeli]

thinking ahead ... what engine /Muffler

I have 3 Jr DS8417s will they work good on a 90 Nitro
Torque: 82 oz/in @ 4.8V,..........98 oz/in @ 6V
Speed: .10 sec/60° @ 4.8V,......08 sec/60° @ 6V

[invertmast]

i prefer something over 100oz torque on my 90's

[WiscHeli]

what is a good reliable ,, Engine / Muffler set up

[invertmast]

YS91SR
Hatori SB-19FH


Tons of power, very quiet, super consistent and reliable mixture settings.

[WiscHeli]

I have seen YS is a good engine ,, never had any YS yet ,, all heli and planks have been OS except 1 Rossi 60 and a Moki 2.10

out of the OSs would a OS .91 SZ-H Hyper w60M-C Carb .. no pump be reliable ?

[george0079]

You're gonna want to put a pump on it. Or else you will constantly be adjusting the needles

[WiscHeli]

so the OS91SZ-PS-H pumped, w/MP5 would be a better chose ... if not a YS 91SR

[Locktite]

I hear the pumped vesion of the OS .91 is not so consistent...I hear nothing but good things about the YS .91 SR.

[invertmast]

get the YS 91SR.. i havent' touched the needles on it since i broke it in.

[JoeScott]

Ditto on the YS 91SR. Runs great out of the box. Good power and very consistent.:thumbup:

[invertmast]

Ditto on the YS 91SR. Runs great out of the box. Good power and very consistent.:thumbup:

yea, the power is awesome.. so much so, to hold a 1900rpm headspeed in normal mode w/o a governor/limiter, my throttle curve is 0-35- 80 w/ it linear between the points. Its almost impossible NOT to fly the heli w/o a governor b/c it overspeeds all the time.

[WiscHeli]

. Its almost impossible NOT to fly the heli w/o a governor b/c it overspeeds all the time.
I already have planed a YB ATG-V2 but your talking in to a YS 91SR.would a MP5 work it is a bit cheper then the Hatori :roll:

[invertmast]

I already have planed a YB ATG-V2 but your talking in to a YS 91SR.would a MP5 work it is a bit cheper then the Hatori :roll:

get the hatori. it was designed to work w/ the longer stroke of the 91SR.. you'll be glad u did. plus it looks better than the MP5 lol