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General control line discussion => Open Forum => Topic started by: George Grossardt on August 07, 2010, 02:38:30 PM

Title: Recommended fuel for OS Max 35FP
Post by: George Grossardt on August 07, 2010, 02:38:30 PM
Folks,

Just getting back into the flying thing.  I've got a Starion 35 with a Max 35 FP that I'm going to fly.  What fuel woud you suggest I use?  What is a good source for fuel (nobody can even spell C/L here in the frozen tundra).
Title: Re: Recommended fuel for OS Max 35FP
Post by: Leester on August 07, 2010, 04:49:09 PM
For the OS Max 35 fp I use 5 or 10% nitro with 20% oil half Castor half Syn. Sig Champion Fuel is what is most common in my area (Illinois).
Title: Re: Recommended fuel for OS Max 35FP
Post by: Bill Heher on August 07, 2010, 09:55:23 PM
SIG Champion 10% is goodfor the O.S., the K&B Stallion could use a bit more lube for insurance. You can add castor to bring it up to 25 - 28%. Do a search here - keywords " adding castor" or "increasing oil content" and there are mutiple posts that will give details.

Powermaster had a "GMA 10/28" blend that also works good if you can find it, reports are that it is back in production - but I can't remember who took it over. There are posts on this site with details- do another search and you'll find them.
Title: Re: Recommended fuel for OS Max 35FP
Post by: Bill Little on August 07, 2010, 10:07:00 PM
SIG Champion 10% is goodfor the O.S., the K&B Stallion could use a bit more lube for insurance. You can add castor to bring it up to 25 - 28%. Do a search here - keywords " adding castor" or "increasing oil content" and there are mutiple posts that will give details.

Powermaster had a "GMA 10/28" blend that also works good if you can find it, reports are that it is back in production - but I can't remember who took it over. There are posts on this site with details- do another search and you'll find them.

Hi Bill,

I think you mis read the post (like I did the first time). ;D  He has a Starion 35 (Dale Campbell design profile) with a OS 35 FP.  Not a Stallion 35.

I missed that at first, myself. ;D

Bill
Title: Re: Recommended fuel for OS Max 35FP
Post by: wwwarbird on August 08, 2010, 11:24:07 PM
 I use Sig Champion 10% nitro with 20% all castor and it seems to work great.
Title: Re: Recommended fuel for OS Max 35FP
Post by: Dennis Moritz on August 09, 2010, 08:04:11 AM
In Philly we use Powermaster 5%, 22%, 50/50. Sometimes we use 10%. We've set lots of these engines up. Use lots of them. And the very similar Tower 40. (I have a lifetime supply of FP/Tower engines.)
Title: Re: Recommended fuel for OS Max 35FP
Post by: john e. holliday on August 09, 2010, 10:14:32 AM
To me it depends on what part of this great country you fly in.  I have used SIG, Power Master, Omega, Excaliber and a few others.  You just have to remember not to lean the engine out too much and use the right prop for the area.  Actually find out what the guys in your area are using.  Then you can get together and order by the cases.
Title: Re: Recommended fuel for OS Max 35FP
Post by: Bill Little on August 10, 2010, 03:44:46 AM
With my old steel/irpn FPs, I often use Sig 5% nitro and 25% all castor.  10% nitro when it gets really hot.  But I have used the nitro content in Sig Champion 1/2 and 1/2 almost equally.

The FP was a strong engine!
Big Bear
Title: Re: Recommended fuel for OS Max 35FP
Post by: M Spencer on August 11, 2010, 04:49:24 AM
Err on the side of caution. Use plenty Then , cut back .