Why do 2 stroke motors run different ratio's of oil in the fuel mix

Some 16:1 40:1 50:1 depending one the motor. what is the reason for some to need a richer mix then others?

It seems to me the oil ratio mix is in direct proportion to the owners ego!

Ignorance by both manufacturer and owner.

Well, if yer talking about different brands and type of motors than just our chinagirls - much of the variance in manufacturer's recommendations has to do with that specific engine's machining tolerances, operating RPM range, and application.

If yer askin' bout just our lil bike motors - depends on what the owner is willing to experiment with. The manufacturer's "16:1 & 20:1" recommendations for our bike may in fact include the possibility of using standard (read low-grade) motor oil instead of 2 cycle, but these are sloppy lil motors that may or may not need a lil extra lube... but therein lurks a debate lol

I'm quite happy running 36:1 with Amsoil's synthetic "50:1" but some are of course running the 100:1 stuff at various ratios... it's up to you

I use regular 2-cycle oil, & break in the engine with 24:1 mix. After the break in, I use 32:1.

__________________
For bicycle engine kits & bike service in Los Angeles, visit us at- www.VeniceMotorBikes.com

Venice got those instructions from me.

__________________
If it ain't broke, and you mess with it long enough, it will be.

Environmentally conscious individuals will use 50:1 or synthetic 100:1. Others need to leave a trail behind so they won't get lost so use more oil.

FYI more oil in the gas results in a leaner mixture, not richer.

So what is the correct ratio if I use Crisco?

__________________
Between Bikes

1:1

I wanna see pics tho o.o

I believe the OP meant richer as in "oil to gasoline".

But, yes think about it....at 32:1 you have twice as much gasoline running through the jet than you do at 16:1.

In honesty, I run 40:1 any more since all my other "goodies" run that mix.

I have recommended 24:1 in the past because I have had a couple of Big Name sellers ask me to refrain from suggesting anything but 16:1 or 20:1 for warranty reasons, so that is sort of a compromise.

So, for the record, run whatever you are comfortable running, and live with the concequences.

__________________
If it ain't broke, and you mess with it long enough, it will be.