How much oil to add to racing fuel

[jimbo1490]

Technically, the two do not mix, but in the context of your use, it may never be a problem. Chaisaws vibrate a lot, and this likely keeps the two mutually insoluble liquids in suspension. Check out this article in Hot Rod magazine:

http://www.hotrod.com/techarticles/42018/

If you left the emulsion to sit for a while (how long, i do not know) they would inevitably sepeate into layers.

Jimbo

 

[ehp]

I sell a fair amount of 113-5 and 113-10 so the 113-10 means 10 % nitro, now i use Angus nitro sold by VP fuels , not saying it is the best but never had any trouble with it and not as hard on carb parts.
what you are talking about i have seen in gas with someone using a normal oil and not a oil meant to be mixed with nitro,
the nitro would not mix and would serprate very fast and the mix looked bad almost like it had little round balls in it.
now the oil i use is meant for nitro and i have had gas mixes here for for 3 months with no difference in colour or looks.
and never had anybody complain about fuel changing colour or looks

 

[jimbo1490]

That's actually really interesting. When I have mixed nitromethane with gas (no oil whatsoever, intended for a four stroke) it seemed to mix but was cloudy instead of clear. I left it alone for a few days and when I came back it was in two distinct layers. But aparently when you mix the right oil in with it, it will stay in solution. Kewl.

Jimbo

 

[Arden Cogar Jr.]

Just wanted to give you guys an update on my friggin saw. it was screaming at home. Made two runs of three cuts of 18" white pine in less than six seconds. Went to the show at Connellsville, warmed it up. Sounded great. Went to warm it up before I sawed in the comp and the ???? thing started spitting and farting. It had absolutely no top end. When I mean none, I mean none. It was like there was way too much gas in the carb and that's despite changing the needle and the seat. After the show, Richard Jordan and Melvin Lentz helped me lean it out; we bent the tong on the high speed jet up, so the bowl wouldn't fill competely up. We also dialed in the needle. That made it better, but it's still a long way off.

Tonight, I'm going to bend the tong on the high speed jet a little more and change the floats so the bowl doesn't fill. We'll see where this gets me.

I just don't get it. It went great. Then it went to ????. Where I live it's about 800 to a 1000 feet in elevation. Connellsville is way up in the mountains where the ski slopes are at in Southern PA. If I had to guesstimate, the elevation would be around 2500 feet. Would that cause this sort of problem. I've heard everything from an air leak to loose gaskets and I'm at a loss for words. Five days til I head out for the Stihl Timbersports Finals and I may just run a 3120 instead of my Rotax because I know I can get three cuts off in less than 10 seconds with it. If you can't tell, I'm very frustrated. Oh well, c'est la vie. It wil come around.

All the best,
Jamie

 

[Marky Mark]

Those words were never so true, c'est la vie