Author Topic: OS 20FP manual? (Read 1495 times)

Tim Wescott · « **on:** April 24, 2012, 03:21:40 PM »

Are there any of these scanned in out there? I seem to know how to run the engine -- I just like to have the manufacturer's take on things...

Mark Scarborough · « **Reply #1 on:** April 24, 2012, 04:07:26 PM »

Tim, I believe that on OS website, there is a link for archives with PDF files of the manuals,, have you tried there?

Bill Little · « **Reply #2 on:** April 24, 2012, 04:18:50 PM »

HI Tim,

The OS manual has no mention of the Brett Buck Tune Up in it.

BIG Bear
RNMM/AMM

Mark Scarborough · « **Reply #3 on:** April 24, 2012, 04:20:25 PM »

Or maybe cause I am SUCH a great guy, I will do the google for you,, and guess what,, on RCG I found this,,

Mark Scarborough · « **Reply #4 on:** April 24, 2012, 04:21:01 PM »

Or maybe cause I am SUCH a great guy, I will do the google for you,, and guess what,, on RCG I found this,, part two,,,

Mark Scarborough · « **Reply #5 on:** April 24, 2012, 04:21:36 PM »

Quote from: Bill Little on April 24, 2012, 04:18:50 PM

HI Tim,

The OS manual has no mention of the Brett Buck Tune Up in it.

BIG Bear
RNMM/AMM

Muah ha ha ha,,, well played Bill, well played

Tim Wescott · « **Reply #6 on:** April 24, 2012, 04:34:10 PM »

Thank you Mark. I looked on the OS website, and then Googled, but did not find: you possess superior Google-Fu than do I today.

Bill:

Interesting fuel mix they recommend: 25% castor and no nitro, or 20% castor, 10% nitro. No mention of synthetics at all.

Geoff Goodworth · « **Reply #7 on:** April 24, 2012, 06:02:55 PM »

Also, that is the manual for the steel liner FPs.

The manual for the ABN FPs specifies 75% methanol, 20% castor oil and 5% nitro or 65% methanol, 20% oil and 15% nitro.

Again, no mention of synthetic oil.

The LA manual recommends the same fuels as the ABN FPs.

Bill Little · « **Reply #8 on:** April 24, 2012, 06:27:13 PM »

I now use the castor only fuel in old worn out engines that would loose too much compression if synthetic oil was used. Sig Champion ( 1/2 and 1/2 oil) w/4 oz. of castor added per gallon for the old iron piston bushing crank engines like the Fox .35.

BIG Bear
RNMM/AMM

Brett Buck · « **Reply #9 on:** April 27, 2012, 10:28:58 AM »

Quote from: Bill Little on April 24, 2012, 04:18:50 PM

HI Tim,

The OS manual has no mention of the Brett Buck Tune Up in it.

Yes, as a matter of fact, it does! It says to take it out of the box, assemble it, and bolt it to the airplane. Nowhere in there does it mention a Dremel tool with a grinding point, nor does it discuss blocking the boost port, putting in a smaller venturi, adding head gaskets, running 11-5.5 props at 8500 rpm in a 4-stroke, throwing away the muffler, etc. It also recommends a 9-4 prop for break-in, and for "sport flying". It's almost as if OS actually knew how to build a good engine BEFORE they consulted with "stunt experts".

Brett

Tim Wescott · « **Reply #10 on:** April 27, 2012, 11:02:15 AM »

Quote from: Brett Buck on April 27, 2012, 10:28:58 AM

It's almost as if OS actually knew how to build a good engine BEFORE they consulted with "stunt experts".

How odd. That an engine manufacturer should know their job.

Randy Cuberly · « **Reply #11 on:** June 19, 2012, 04:16:17 PM »

Quote from: Tim Wescott on April 27, 2012, 11:02:15 AM

How odd. That an engine manufacturer should know their job.

They probably consulted with Brett before finalizing the design!

Randy Cuberly

Howard Rush · « **Reply #12 on:** June 19, 2012, 05:10:00 PM »

They came pretty close with the VF, too.

Randy Cuberly · « **Reply #13 on:** June 19, 2012, 11:28:09 PM »

Quote from: Howard Rush on June 19, 2012, 05:10:00 PM

They came pretty close with the VF, too.

Yeah...I'll bet they were as surprised as we were about that one!!!

Randy C.