RunRyder - RAPTOR 90 Crank Washer

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 90 Crank Washer

redwingsfan71
Heliman
Location: Bradenton, FL

I've got a YS 91SR in my new Raptor 903D. Do I or don't I put the washer that came with the motor under the fan? The manual calls for it but I've heard others say don't use it. I'm confused. Please help. Thanks!

Have fun...... be safe...... burn fuel....... priceless!

06-13-2008 12:25 AM

w12martin
Senior Heliman
Location: Matsuyama, Ehime, Japan

I read somewhere the Thunder Tiger pilots are not longer using this washer in their machines!
Also where I fly, nobody use it...
My heli is a Bravo 90 (same thunder tiger but sold in Japan)
The kit include the washer but the manual doesn't include it.
So, following the Bravo's manual the heli should be mounted without the washer.
I flew my heli with and without the washer and I coldn't find any difference...

06-13-2008 03:20 AM

redwingsfan71
Heliman
Location: Bradenton, FL

Thanks Martin, I'll look into it.

Have fun...... be safe...... burn fuel....... priceless!

06-13-2008 04:42 AM

JJMAN
Senior Heliman
Location: Chesapeake, Virginia - USA

I dont see any benefit to not using it.

***I Like Jet Noise***

06-13-2008 06:16 AM

Divot
Veteran
Location: Mesa, AZ

Quote
I've got a YS 91SR in my new Raptor 903D. Do I or don't I put the washer that came with the motor under the fan?

No washer

06-13-2008 06:49 AM

helinelly
Senior Heliman
Location: st.helens england

YIP NO WASHER

06-13-2008 11:48 AM

redwingsfan71
Heliman
Location: Bradenton, FL

Thanks Guys!!!

Have fun...... be safe...... burn fuel....... priceless!

06-13-2008 03:53 PM

Lamar Cooley
Senior Heliman
Location: Houma,La.,U.S.A.

crank washer

redwingsfan71,
The washer, in some cases, might cause the clutch to bottom out (rub)
the top of the clutch bell. Not good. Or, if not used, cause the clutch to protrude out at the bottom of the clutch bell. Not good.
I didn't use the washer on either of my Raptors.
50 Titan with an OS 50 Hyp. and 90 with OS90 SZH.
The clutch's are almost perfectly centered in the clutch bell.
I hope this is of some small help.
Regards

here when wanted; there when needed; everywhere when looked for

06-14-2008 07:13 AM

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 90 Crank Washer

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