RunRyder RC
WATCH
 1 page 207 views Post Reply
🏠Home🏠RC Main Discussion › O.S. 61 SF-H
02-15-2021 03:25 AM  82 days ago
Topic Vote1Post 1
ChargedDust

rrNovice

Mastic NY U.S.A.

MyPosts All Forum Topic
O.S. 61 SF-H
I have this engine that I bought used, it's the helicopter version with the black head. It needs a new piston and ring. I bought what I thought were the right parts, 27703200 piston and 27703400 ring but they are not correct. The 27703200 piston is .900" and the piston in the engine is .940", didn't measure the rings but laying one over the other it's clear they're not the same. SO - anyone know what the correct piston and ring are??
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-15-2021 04:16 AM  82 days ago
Rojoalfa

rrKey Veteran

Punta de Mata, Monagas-Venezuela

MyPosts All Forum Topic
/
/

Part #27703400
This is the ring for OS .55HZ, .61SF, .61SF-H, .61SF-HG o .61RF

Bore: 0.91" (23mm)

I don't know but... Are you comparing a wasted ring with a new ring?

That is the ring !

/
Saludos cordiales,
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
02-15-2021 07:14 PM  81 days ago
Rojoalfa

rrKey Veteran

Punta de Mata, Monagas-Venezuela

MyPosts All Forum Topic
/
/

PM sent.

/
Saludos cordiales,
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
03-26-2021 10:41 PM  42 days ago
GMPheli

rrElite Veteran

W. Bridgewater, MA USA

MyPosts All Forum Topic
If it has a black head it is an SFN-H
SHARE  PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 207 views Post Reply
🏠Home🏠RC Main Discussion › O.S. 61 SF-H
Print TOPIC

 2  Topic Subscribe

Saturday, May 8 - 3:27 pm - Copyright © 2000-2021 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online