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Original Post (Thread Starter)
#865744 12/09/2021 4:13 PM
by Hugh Jörgen
Hugh Jörgen
Odd pisser that I've run across.
1970 Commando.
T/S Amal is stamped 932 bar R300
D/S is 932 bar.

Had the bowls off and decided to zero out everything to check new throttle cables setup.
Screwed the throttle stops right out and dropped the slides/needles in.
T/S needle sits .05 " lower than the D/S needle.
After measuring parts it looks like the body itself is the culprit.

R300 vs not?
Liked Replies
#865753 Dec 9th a 04:59 PM
by kommando
kommando
750 Commando uses normal 4 stroke needle and spray tube, its the 850 that has the special needle and the cutaway spray tube. Normally a 300 and 301 932 come with standard 4 stroke needle and spray tube, but lots can happen over the years and both needle and spray tube can be changed.
1 member likes this
#865836 Dec 10th a 01:12 PM
by L.A.B.
L.A.B.
Originally Posted by Hugh Jörgen
Originally Posted by L.A.B.
The original "1970 Commando" carbs would have been 930/?? (30mm) probably either /46 & /47 or /63 & /64.

Hmm.
What would be advantage of 32mm?

The pre-Combat RH1 cylinder head intake port size (if standard?) is 1.1/8", 28.5mm...

http://atlanticgreen.com/nhth.htm

...and the standard inlet manifolds taper down from 1.3/16" (30mm) at the carb end to 1.1/8"...

https://www.obsoletebikeparts.com/a...50-manifold-06-0509-06-2819/#description

... so there's probably little or nothing to be gained by using 932 (32mm) carbs with a standard "1970" cylinder head and inlet manifolds.
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