correct fuel mix?

[robbie]

What's the correct fuel mix ratio for the typical Chinese 49cc pocket bike engine? These things are as common as houseflies, but I've never seen any papers telling what the correct mixture is because all mine have been previously used. I just bought a brand new bike engine on ebay, and it doesn't have any info either!

 

[KieranM]

to brake it in its recommended to be 25:1. brake it in for about 4 tanks, not giving it full revs. Then after 4 tanks move to 32:1 or anything below 50:1. no papers come with these, only when buying the actual bike, but those are shady to say the least lol.

 

[robbie]

OK, thanks for the advice. I figured that any modern engine was going to be like a new chain saw, rated for 50 to 1. But I just bought a brand new Chinese brush cutter and it has a huge sticker on the gas tank that says 25 to 1, so it made me wonder.......

Now I have 2 gas cans, on for the chain saw and one for the brush cutter. Maybe I'll end up using half a tank from each can for the final mix in the mini bikes!

 

[KieranM]

just out of interest, how much you pay for engine?

 

[robbie]

I bought it from an ebay vendor in Hong Kong. The engine was $39, the shipping was $60. Sometimes you can find these on ebay for around 80 bucks total with shipping, but the price seems to have gone up recently.

Mine came with the aluminum starter housing, which is a big plus. The aluminum starter usually costs $20 by itself.

The most amazing thing was that I received it just 3 days after ordering.

 

[Kenny_McCormic]

more oil=better

 

[KieranM]

there was a german fella selling them on ebay at bidding, i got mine for 10 and 25 postage.

 

[robbie]

Is that British pounds?

 

[fowler]

or a euro

 

[KieranM]

sorry its euro

 

[fowler]

just out of intrest what was the currency of ireland

 

[KieranM]

euro, i think its to do with joining the eu or something, we used to have irish pound (punt) but the euro took over in 2002.

 

[fowler]

it was just introduced to make trade in europe easier
(some countries choose not to use it)

 

[robbie]

Wow, that's a great deal. About half of the typical price.

 

[KieranM]

sur it was good, i think postage to america was 35euro. yea probally made to trade easier. england dont use it.