1973 R75/5, stock.
I have rebuilt about a Million Amal Concentrics but these will be my first CV carbs, what do I need to know?
Is the stock jetting right? (I'm at essentially Sea-level).
I have a big order going in at Huckys for fuel system/Carb bits, this is "round 1" of establishing a baseline:
Flush the Tank, new fuel line with filters, carb rebuilds, new throttle cables, new airtube O-rings, new rubbers (airtubes to carbs and carbs to head) and a new air filter.
The bike runs fine, this is just PM (it's new to me but it IS 38 years old).
I am also replacing all of the cables on the bike, wheels and brakes are next.
The stock jetting works fine on my R75/5.
Cleaning in an ultrasonic bath works best. Usually the small air passages for the idle circuit give the most trouble due to blockage.
If the CV diaphragm cover is secured with slot-head screws you might consider upgrading to the allen, socket-head variety at this time.
The carbs are pretty simple as you may imagine, it helps having the Bing manual handy.
You're familiar with the jet needle position and quarter-turn to adjust routine?
happy to do what I can.
Actually I'd like to find a good ultrasonic bath for home use as using the one at work isn't always convenient.
If you know of a make/model to recommend I'd like to hear about it.
The heated, 50% solution of simple green/water works wonders.
Would like to hear an update on your R2 project as well...