This jokes on me

OK, this is where I expose myself to all your banter. Some years ago I bought a small 100cc motorbike for commuting/fun. It was about this time that 4 star petrol was being withdrawn. Well my little bike was about 10 years old and I wondered for many months about how it would manage on lead free fuel. It wasn't until I came to check the valve clearances that it dawned. It was a 2 stroke engine.

John

Reply to
John Manders
Loading thread data ...

Yes, before anyone asks, I had been putting oil in it. That makes it even more embarrassing.

John

Reply to
John Manders

What were the clearances?

Tom

Reply to
Tom

John,

You never stated whether it was a suzuki or a Yamaha in which case it would have had reed valves. :-))

Martin P

Reply to
Campingstoveman

2t oil, which is used at lower

to be very agreeable to my chainsaw over about

Sorry Arthur, I meant Redex upper cylinder lubricant. I'm showing my age but I remember it being sold from a dispensing gun on forecourts. I'm sure that the modern 2T oil is excellent. Not really my field though.

John

Reply to
John Manders

Well that raises an interesting question - do small motorbike

2-strokes like that have any issues with lead-free petrol ? (I know nowt of bikes)
Reply to
Andy Dingley

I'm not aware of any. I'm sure others know far more than I about them, as this post demonstrates. BTW Martin, it was a Suzuki ER100. As an aside, I read on another NG a contribution from a well respected oil development engineer. He pointed out that 2 stroke oil was an upper cylinder lubricant was far superior to anything red that is sold as such.

John

##-----------------------------------------------## Article posted from Internal Fire Newsreader

formatting link
Share your knowledge in... uk.rec.engines.stationary ##-----------------------------------------------##

Reply to
No Name

I don't remember much about 2t bikes but chainsaws ran on unleaded from early times, simply because the compression pressures are less.

I do know that if you forget to put lubricant into the fuel that the saws take much longer to seize with leaded ;-(.

AJH

Reply to
sylva

Do you mean that conventional 2t oil is better than modern (red) synthetic 2t oil, which is used at lower concentrations?

Though initially dubious about it, I've found synthetic (red) petroil mix to be very agreeable to my chainsaw over about nine years of periodic heavy use, coppicing and logging.

Regards, Arthur G.

Reply to
Arthur G

"Andy Dingley" wrote >

Clearly no problem with VSR, but I guess the reduction in octane rating could effect some more sporty models.

Reply to
Nick H

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.