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Commando

Description

A technical forum for Commandos

Panniers and luggage

Submitted by marcus_brown on Sun, 11/04/2021
Forums
Commando

Im hoping to do some touring on my 850 this  Summer when allowed out so needed some luggage panniers.

There seems to be very few options so I decided to buy some Lomo bags (a pair of 15litre and 30 litre bags). They have got some very good reviews and are cheap, I think they were around £55 to£65 for each pair. I couldnt find any suitable panniers so decided to make my own out of 316 stainless, it all seemed to work out ok with materials only being around £30 to £40, if I make a second set I think I will use 304

index plunger

Submitted by robert_berry on Sat, 10/04/2021
Forums
Commando

Had a oil weep from the index plunger housing on my 850 mk3 , found it was loose so took it out and found that there is a thin shim and a rubber o ring on it . had a look at parts list but can't see any washer or seal fitted to it . Should there be just a copper washer with no rubber o ring 

Tragic oil loss

Submitted by andy_bone on Wed, 07/04/2021
Forums
Commando

OK, so I am bumbling home on my 1972 750, and shock-horror, notice that my oil pressure guage shows an oil pressure of about 10 psi, as opposed to the usual 30 to 40. As I watch it the pressure continues to fall, down to nothing. (Why do I have an oil-pressure guage? Stops you forgetting to turn on the anti-sump tap). With my wife on the back, (combined age 158) this was not the time to stop and consider pushing, so I press on, hoping it was a guage problem.

Commando Exhaust interchangability

Submitted by adam_lynch on Sun, 04/04/2021
Forums
Commando

Hello,

I am after some assistance. I wanted to replace my unbalanced exhaust headers on my 1974 850 however the ones i have ordered do not seem to fit by some margin. when you try to fit the silencer it is at least 2 1/2" too low from the standard rubber mountings. My question is therefore should exhausts with part number 06.3375/6 fit an 850? 

 

For information:

3 bearing crank

Submitted by michael_coare on Sun, 04/04/2021
Forums
Commando

Looking back on my PC last night, I came across a photo labelled 3 bearing crank.

I have no further information on it, but I suspect it might have been something Kenny Dreer had been working on way back.

Anybody else come across anything similar, or has any more info?

Throttle stop mystery

Submitted by julian_wells on Sun, 04/04/2021
Forums
Commando

Here's a problem which challenges my intuitions about the laws of nature — and definitely contravenes Sod's Law:

Went for a ride (to test my new indicator set-up); crack the throttle open when I get to the by-pass; when I go to shut down the engine won't settle down to ticker but races at about 3000 rpm.

Carbs

Submitted by norman_murray on Sun, 28/03/2021
Forums
Commando

Hi, I've a 750 with high compression head, quick action throttle and a pair of handed 930 concentrics.

Main jet 220. Needle jet 106 which are both correct according to Haynes manual.

The throttle slide however is 3 1/2, but according to manual should be a 3.

 

Will this affect anything does anyone know?

It was getting harder to start so stripped carbs for cleaning.

It seems to be running a bit rich if anything.

Thank you for your help. 

Mk3 Gearbox Shell Casting Issue

Submitted by andrew_mackenzie on Sat, 27/03/2021
Forums
Commando

I had to buy one of the new manufacture Mk3 gearbox shells, as my original was cracked.  I am now at the assembly stage and having fitted the quadrant and camplate, started inserting the gears and am struggling with engaging the mainshaft selector fork with the camplate. I am not new to building gearboxes, having rebuilt my original Mk3 and more recently my Atlas boxes, plus T120 and T140 boxes, and have never had any issues before.

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