Forum

[Beezabryan]

Always go for the most expensive cure for an easily rectified defect, you know it makes sense

[stinkwheel]

Huh, huh. Flange.

[nab301]

I fitted an Amal to a 350 I had back in the noughties.. It had the jet settings as above ( I still have the carb but not the 350). It suffered horrendous slide wear similar to the photos . It worked fine and I liked the tickler ( easy to know if there's petrol in the float bowl). Difficult starting one day I diagnosed blocked idle passage , I was unable to clear, refitted the original Mikarb , wasn't late for the meet up I had planned and the bike ran fine from then on . I guess I had more money than sense at the time ! Although it didn't stop me buying a MK2 for my current 500...( I like the looks)

[Adrian]

The original Mk1 Concentrics were the result of the 60s British bike manufacturers screwing Amal down on price, with the fairly recent introduction of the Premier by Burlen Fuel Systems (the current producer of Amal carbs) being an attempt to right a few of the wrongs of 50 years ago. Pub quiz question, which was the first British motorcycle to be fitted with the Mk1 Concentric?



I'm sure Bullet Whisperer won't mind me re-posting his video on how to clear the (non-Premier) Mk1 Concentric pilot jets.







A.

[mauri]

or you can just a easily take te plug out in the back, and get a nice clean view of the channel.

[Bullet Whisperer]

Indeed.

[Super45]

The slide sticks on my 350 mikarb, always at the top of the slide and it will do it with or without the carb top in situe, I tried a bit of abrasive paste in the bore and on the slide itsself to no marjoe benifi so have come to the conclusion the carb potentially has warped by over tightening by previously hamfisted owners ( many owners with little mechanical knowledge me things judging by the state of the clutch i replaced the other day) , so will try the little chamfer as suggested above to see if that works but may invest in a full rebuild kit as it decided to piddle fuel out of the side float chmber bottom the other day when i tried to start her so mor investigation is required me thinks

[Mark M]

Adrian, what's the answer!

REgards, Mark

[John L]

Amal 626 fitted to my Bullet 350 :-


https://i.ibb.co/L0Q2b42/Bullet-350-wit ... cables.jpg" alt="Bullet-350-with-Concentric-carb-and-homemade-cables

[John L]

stinkwheel - Your experience with Amal carb. - you say "The choke cable is, as well as being seemingly redundant, difficult to route, fussy to locate and prone to seizing. The throttle cable you get with them is always too long".,br>
Had none of that trouble myself - I've made all the cables on this bike. Throttle cable too long ? well, shorten it ...!

Too long, too short, I'd have only myself to blame.

I can't see anything difficult about routing air cable, either. Maybe carb. position is different on your bike ?