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commando 1/2 speed shaft support

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commando 1/2 speed shaft support

Posted by hugh_sanborn at November 09. 2017

Hello,  is it possible to obtain the dimensions for making a 1/2 speed support for use when adjusting the timing chain on a commando?  I would much rather cut up a chunk of aluminum plate than a timing cover!

 

Thanks,

 

Hugh

Re: commando 1/2 speed shaft support

Posted by paul_standeven at November 09. 2017

Find a damaged timing cover.

I have one for servicing my Dominator, it's cut away for accessing both chains.  Make sure to avoid cutting off the hole for the timing cover screw directly above the half time pinion shaft.

Paul

Re: commando 1/2 speed shaft support

Posted by Bob Matthews at November 09. 2017

Re: commando 1/2 speed shaft support

Posted by Alan Throssell at November 09. 2017

Re: commando 1/2 speed shaft support

Posted by david_evans at Sunday 10:12

Imade one from a piece of 1/2" alloy plate, I drilled and reamed the hole for the support (1/2" i think) then with the shank of a 1/2"a milling cutter through the plate to centralise the plate, I spotted through the relevant holes from the timing cover and drilled them to suit the screws. I may have machined a bit away to clear the oil pump. I'll dig it out and post a photo

Re: commando 1/2 speed shaft support

Posted by david_evans at Sunday 13:51

£19.50 plus vat! that finish must be gold plate.

Re: commando 1/2 speed shaft support

Posted by hugh_sanborn at Tuesday 22:22

Previously david_evans wrote:

Imade one from a piece of 1/2" alloy plate, I drilled and reamed the hole for the support (1/2" i think) then with the shank of a 1/2"a milling cutter through the plate to centralise the plate, I spotted through the relevant holes from the timing cover and drilled them to suit the screws. I may have machined a bit away to clear the oil pump. I'll dig it out and post a photo

Thank you David,  This is exactly what I was hoping for!  I have a small machine shop and like to make my own tools.  Perfect!!!

Re: commando 1/2 speed shaft support

Posted by david_evans at Saturday 20:42
Not sure if this will work but here is my half speed pinion support
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Re: commando 1/2 speed shaft support

Posted by david_evans at Saturday 20:51

another shot

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Re: commando 1/2 speed shaft support

Posted by david_evans at Saturday 20:55

And the final one, the main hole is 9/16" dia, the cutout on the edge clears the oil pump and on the face the gears. Once the 9/16 hole is centred on the back of the timing cover you can spot the small holes through from the outer edge (ignore the 7/16" written on the plate, brain fart)

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Re: commando 1/2 speed shaft support

Posted by hugh_sanborn at Sunday 01:21

Thank you David,  I'll make one up when I get the timing cover off.  This is exactly what I was looking for and it means another timing cover won't be chopped up!

 

Hugh

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