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Commando

Description

A technical forum for Commandos

Removing the Ignition Panel

Submitted by alexander_simonson on Thu, 25/04/2024
Forums
Commando
Hello!  With the sump plug out and a new sump reed valve in hand I'm excited for the next chapter.  Jim from JS Motorsports has been great.  But to do this right I need access to the top of my oil tank which is hampered by the ignition panel.  I thought it would be straightforward to remove, and I found a bolt with a spacer under the seat.  I can move the panel, but it's not coming out.  I had a word with my impatient side about using force to solve this and came back here. Does something need to be detached on the other side to pull this out?  On the right side of the ignition case there are

Oil Filter Connections

Submitted by alec_stevens on Wed, 24/04/2024
Forums
Commando
With a Commando ,you get used to vibration issues, issolastics or not. I find that you go round the bike on a regular basis tightening up Jubilee  clips. What i have never done is the clips securing the hose to the Filter pipes, these now seem to be weeping . On inspection the slots are facing the back of the gearbox, with about an inch of gap.

Replacing kickstarter seal

Submitted by graeme_hood on Mon, 22/04/2024
Forums
Commando
I've just noticed a steady drip of oil from the kickstarter spindle. Is it an easy matter of removing the 5 cover bolts, heating the outer case until the bush drops out, replacing o-ring with new x-ring, pushing the bush back in (is a new one required/advised), and bolting up with new gasket? If so, then I can probably handle that... But any tips appreciated

Even More Crankshaft Woe?

Submitted by matthew_hassock on Tue, 16/04/2024
Forums
Commando

Keen eyed readers will notice that I have posted here before on problems with my 1972 750 Commando crankshaft. The one which came with the bike was ruined beyond repair (QV). I then bought a second-hand crankshaft (in pieces) which I returned because a) the bolt holes didn't align and b) it was (0.018") bent.

Having given up on a decent SH crank I bought a brand new CNC machined steel crankshaft supplied unbalanced and sent it to my friendly engineer with conrods, pistons etc. for balancing,

850 camshaft choice

Submitted by paul_taylor1 on Sat, 06/04/2024
Forums
Commando

Hi all, I have to replace my 4S cam, what with though, STD or 4S?

The bike was built as a MH Replica PR with MH big valve head, 4S, 10-1 piston & Rita EI with 4S advance curve.

Now, it’s got FullAuto head, std pistons, 4S.

 I’m quite happy with the cam, but not sure if std or PW3 would be better?

TIA

Paul

1973 850 Commando - No spark

Submitted by mark_newman1 on Fri, 05/04/2024
Forums
Commando

I have a 1973 850 Commando, which had been starting and running well until I replaced the battery.

 

I had some trouble making the connections to the new battery; it appears that the bike has been wired with a negative earth. I therefore tested the obvious negative connections with a circuit tester and made the connections appropriately.

 

They were as follows:

Large earth cable from an earth point near the right hand side Z Plate

Three red wires attached together with an earth label on them

Black Wire from the Voltage Regulator

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