Author Topic: Hey Randy S-OS.25VF (Read 506 times)

James Strickland · « **on:** September 02, 2012, 11:57:36 PM »

Randy or anyone who knows,
What is the weight of an OS.25VF & its timing for a pipe when set up for stunt?
Thanks, James

Bill Little · « **Reply #1 on:** September 03, 2012, 04:20:50 PM »

HI James,

I have one, but I cannot tell you the weight, I don't remember..........

It's on my "bucket list" to use on an Ares size model. I have a .32 pipe for it, but I will have to call Randy and ask him the pipe length to start with.

BIG Bear
RNMM/AMM

Paul Allen · « **Reply #2 on:** September 04, 2012, 12:59:57 AM »

James
I have run the VF in an Oriental, weight is 8 oz's with a Mac's header, RPM 10,700, pipe length 17.5"
fuel- 10% nitro, 10% Klotz, 10% Castor, it uses 95cc , on 61ft 0.015" lines E to E. Prop 10x4 APC.
Engine timing as near as I can measure - Exhaust 150 degree's ( total), Inlet 120 degree's ( total) , Crankshaft 193 degree's.
Randy pipe.
Paul
In OZ

Trostle · « **Reply #3 on:** September 04, 2012, 01:42:18 AM »

I have an OS .25 VF modified by Randy. His venturi, ST needle. I just weighed it at 7.5 oz. His tuned pipe is 1.4 oz. I did not weigh a header. Timing by Randy.

Keith

Author Topic: Hey Randy S-OS.25VF (Read 506 times)

James Strickland

Hey Randy S-OS.25VF

Bill Little

Re: Hey Randy S-OS.25VF

Paul Allen

Re: Hey Randy S-OS.25VF

Trostle

Re: Hey Randy S-OS.25VF