Refueling routine. It's been a long time
- spannerman
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Quick question here , Why is everyone quoting 3%, standard! lambretta,s run on 4%
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Those quoting probably don't run standard Lambretta's.spannerman wrote: ↑Thu Feb 22, 2018 5:43 pm Quick question here , Why is everyone quoting 3%, standard! lambretta,s run on 4%
Not all standard Lambrettas were quoted at 4%.
- HxPaul
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I cant speak for others,but I run at 3 per cent because its better at that rate.Oil has changed a lot since we used 4 per cent.I used to run mine at 4 per cent when the petrol was 4 star,plus we used to use mineral oil.
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I believe the answer is in the oil. Back in the day Lambrettas were designed so one could rock up at any petrol/gas station and mix varying weights of mineral oil with the fuel. They recommended 4% .spannerman wrote: ↑Thu Feb 22, 2018 5:43 pm Quick question here , Why is everyone quoting 3%, standard! lambretta,s run on 4%
Now we have semi and fully synthetic 2-stroke specific oils which have better additives and lubricity. So if using them we can reduce to 3%.
- coaster
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That's because modern oils are much better that what was available back then, Vespa were using 2%.spannerman wrote: ↑Thu Feb 22, 2018 5:43 pm Quick question here , Why is everyone quoting 3%, standard! lambretta,s run on 4%
Some kits still recommend 4% but I'm yet to be convinced that is down to any scientific research personally.
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The primary use of the oil is to lubricate the crank. With vespas have the induction directly over the crank, the crank is directly lubricated, hence the 2%. With Lambrettas having modern, improved, cranks and better quality cylinders, pistons and 2 stroke oil then running 2% is achievable. I think some wrote about trying at 1%
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That'd be a brave man on an expensive cylinder kit...mick1 wrote: ↑Fri Feb 23, 2018 2:13 pm The primary use of the oil is to lubricate the crank. With vespas have the induction directly over the crank, the crank is directly lubricated, hence the 2%. With Lambrettas having modern, improved, cranks and better quality cylinders, pistons and 2 stroke oil then running 2% is achievable. I think some wrote about trying at 1%
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
- spannerman
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Well if you read most aftermarket kits they still quote 4%, probably to safe-guard themselves .though, personally I would stick to 4% on an iron barrel and 3% on nicasil lined ,yes oil is better these days ,so there is an argument either way, if your happy to drop your oil ratio on an expensive kit , so be it !