Messages

1

General Two Stroke Talk / Two stroke at monster cup

« on: October 22, 2012, 04:02:11 AM »

Bobby Fitch... One of our local N Colorado racers. He and Cody Nobles (YZ250) are often at the front of our local 250A class races. We were all bummed he didn't make it to the finals.

2

General Two Stroke Talk / who rides what?

« on: October 13, 2012, 05:08:49 PM »

Current rides are in the signature.... Would like to try the TM300MX if we could get some more dealers in the States.

3

Technical / 100LL vs 110 unleaded

« on: October 12, 2012, 08:55:47 PM »

I'm not too sure if the lead helps a 2 stroke with any type of lubricating properties Tetraethylead was originally added to fuel to lubricate and provide a cushioning layer for the valves, an increase in octane was an unexpected side effect of the Tetraethyllead. A 2 stroke only relies on oil for lubrication. The best reasons for running Avgas are the consistency and quality control, no alcohol, availability, and cost.

Riffraff is correct. Light aircraft piston engines need the lead in the valve train to prevent sticking and failures. Might not be a bad idea for that 4 stroke you secretly have hiding in your garage either. As for the lubricating properties in a two stroke, that is debatable. It does not however contain ethanol and undergoes more sampling and testing to ensure its quality. That and it just smells awesome as premix in a 2 stroke. It is usually cheaper than race fuel as well. I pay about +- $5.00 vs +/- $7.00 a gal for race gas.

4

Photos & Videos / YZ 360 Aluminum Frame

« on: October 10, 2012, 04:02:31 PM »

Not only should Yamaha produce this as a 250 but also as a 360 like you have... I've long thought that a 350-360 two stroke was just about the ultimate open class 2 stroke...  Would love a bike like that as I also race vet classes where it's race it if you got it rather than displacement based. I am currently rebuilding my 2003 RM250 from the ground up but one of these may be next on the list.




2003 RM250
2005 RM65 (my son's)
2006 GSXR-1000 (my 4 banger)