Your OB in cold weather

Hey guys,

I just got back from a run, and I wanted to mention some observations about running my K&B in cold weather. If you wanna add to this, feel free!

I have an older K&B w/ the 12mm crank. I ran Byron car fuel (20%) with castor added in, which probably brought the nitro down to 15%.

The Temp outside was about 35 degrees F (1`C) and the water was about the same.

I ran a McCoy MC-59 plug and I was very happy with it. Also, I completely disconnected the water cooling. My engine NEVER came back hot. Based on what I know of two stroke engines, they like heat. I don't mean meltdown, but hotter engines do tend to run better. Consider the K&B SS. Air cooled for a reason? HMMMM.

So that's a little piece of info you might want to add to your memory bank. I know of a few people who were having trouble out there in the cold, so I thought I'd chime in.

Now, it didn't run perfect. Here's where I need help.

I would hold it wide open for a few seconds, then let off, and it would stall if I cut off the throttle alot. But, before you say I was lean:

Before I got to full speed, I putted around at mid throttle and the engine sounded gargly, and when I opened it up, it didn't want to pick up speed smoothly or quickly (indicating rich condition, right?). So what should I do to get a smoother run...

Thanks

JT

Jeff,

HIT THE NITRO BUTTON!!! 15% fuel??? I think I run more than that in my lawn mower - no, I don't, just a bad example. Is a bad example better than no example at all? Probably not.

I run 65% when I race and if I was just running for sport, which I guess I never really do, I'd run at least 45%

Jerry D.

I was one of those people asking questions about running in the cold, My proplems went away right after i bought a new gallon of 40 % fuel , i tried 25% only because my local store was out of 40. Like other people suggested to me try a little smaller prop and i also closed off the water pickup.my mph was alittle slower but that will change when it warms up out side. they never seamed to reach good temperture for me. Dale B