Amal Carb Jetting

[Duccout]

So did my Mototrans Strada 250, all the same except that the main jet is a 180, probably due to the more restricted silencer.

Colin

[Duccout]

Wonders will never cease, I seem to have got the bike running decently with the Amal! It is a bit rich, so I will try it with the needle down a notch, but for a 45 yr-old carb, it is a bit of a miracle.

I persevered because I suspect that Mikunis may not like running with a downdraught? I don't believe that I have ever seen a Japanese bike equipped with Mikunis that did not have the carbs mounted horizontally, and I believe that my problem with weakness low-down may be due to the downdraught angle lowering the fuel level.


Colin

[Dave354]

Hopefully this will help the carb rebuild!

[Duccout]

Very good!

[George]

Wonders will never cease, I seem to have got the bike running decently with the Amal! It is a bit rich, so I will try it with the needle down a notch, but for a 45 yr-old carb, it is a bit of a miracle.

I persevered because I suspect that Mikunis may not like running with a downdraught? I don't believe that I have ever seen a Japanese bike equipped with Mikunis that did not have the carbs mounted horizontally, and I believe that my problem with weakness low-down may be due to the downdraught angle lowering the fuel level.


Colin

Good news Colin. Never give up trying. I am a fan of Amal. Never had problems.

[Duccout]

Hi George,

I am a big fan of Mikunis, they are beautifully made and simple to work on, and infinitely adjustable, BUT this infinite adjustability is a drawback when trying to set up a carb that is non-standard. The big Japanese companies can afford to set their bikes up perfectly, but a private owner just keeps chasing their tail, and it works out expensive. Amals, on the other hand, have a big advantage for us, in that Mototrans have done all the work for us!

If my old carb ends up being too worn, I can simply buy a brand new one with identical jetting from Burlen, which is what I should have done in the first place!

Cheers,

Colin