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HomeAircraftHelicopterThunder TigerRAPTOR 90 › OS 70 in a raptor 90
01-24-2010 09:34 PM  8 years agoPost 1
RaptorRob

rrApprentice

hamlin P.A.

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Ok i got a nearly new os 70 on my bench and im looking to get into a 60/90 heli and i was wondering if i can run a 70 in say a 90 se without changing gearing and just leave the boom long and just run the shorter blades i have a 50 size motor in my raptor 30 but i had to change the pinion and main gear... the reason i want to do this is that theres a few 90 se's for sale and they have the metal head and a few upgrades rather than the stock 60 let me know thanks

no babe i swear i sold my other heli to buy this one :)

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01-24-2010 11:51 PM  8 years agoPost 2
LonR

rrElite Veteran

Macomb,Mi

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The motor will work in the 90 but im pretty sure you'll have to change the gearing for the it.

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01-25-2010 12:03 AM  8 years agoPost 3
payne1967

rrElite Veteran

uk

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use the 10 tooth pinion
if you run the 11 or 12 that comes with the 90 kit then the motor will over heat
the 70 will run with the 11 tooth pinion but watch the engine temps
the 90 boom etc will be ok

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01-25-2010 12:32 AM  8 years agoPost 4
Rafael23cc

rrKey Veteran

Junction City, KS

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I flew an OS 70 powered Raptor 60 for about 4 years. I used the 60 gearing tho. 680 blades and 60 boom. I'm sure that If you use the 90 boom with the 680 blades and the 60 gearing you will not have any problems.

Rafael

Keep your feet on the ground, but your eyes on the sky.
Team Heliproz.com

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01-26-2010 02:14 AM  8 years agoPost 5
RaptorRob

rrApprentice

hamlin P.A.

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cool
thanks guys!!! now if i can just wait till my tax return to get some money to blow ill be good lol

no babe i swear i sold my other heli to buy this one :)

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01-26-2010 07:59 PM  8 years agoPost 6
payne1967

rrElite Veteran

uk

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i don't know about the new 90 raptor but the older ones came with a 11 and 12 tooth pinion
the 10 tooth is from the 60 and only costs a few pennies

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