Atlas REAR CHAINGUARD EXTENSION

pierodn

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Nov 10, 2012
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Hi All,
a question, please.
Item n. 06.0843 (REAR CHAINGUARD EXTENSION) that is for early 68 Commando, is the same for Atlas?.
Atlas have on the swinging two brackets that go up for chainguard and down for?.
Thank you.
Piero
 
dynodave said:
66-67 650SS-Atlas had optional 2 part upper/lower fully enclosed chain guard
Click to expand...

My '62 build Atlas has the lower brackets, apparantly the fully enclosed chain case was available much earlier, although I have never seen one.

Slick
 
The fully enclosed cases were fitted to the first slimlines with build dates from mid 1958 . Mine are still in use and with minor modification ( spray baffles) work very well. I run a Scottoiler and the cases keep water off and collect excess oil and drop it clear of the tire (mostly!) They do however limit the tyre size to 3.50. cases can just be seen in my avatar.
 
Any chance of a close-up pix? Different from the regular one in what way to limit the tire width? TIA
 
From norton bob's description, it does not seem that the fully enclosed Norton chaincases were oil tight. A fully enclosed oil bath chaincase, would be a blessing .... I had a buddy who had a BSA with an oil bath chain case .... i never knew him to ever adjust his chain tension, or ever wear out a chain.

Slick
 
texasSlick said:
From norton bob's description, it does not seem that the fully enclosed Norton chaincases were oil tight. A fully enclosed oil bath chaincase, would be a blessing .... I had a buddy who had a BSA with an oil bath chain case .... i never knew him to ever adjust his chain tension, or ever wear out a chain.

Slick
Click to expand...
Yes the BSA ones are quite good. I have 3 BSA A-10 and I have one full chain case. It is not installed as it had a rough prior life and in need of repair to use it. It is certainly complex and comprehensive with a removeable rear sprocket end cap and a full gearbox sprocket shroud enclosure. It does not appear to be an oil bath.
My 61 Gold flash has a full cast aluminum primary while Norton was still playing with sheetmetal.
 
The slimline rear case was not intended to be oil retaining, just protection from rain,wheel spray and flying stones. In std form it allows wheel spray to bounce off the swingarm pivot and hit the gearbox sprocket. It can be vastly improved by a rubber mudflap at the front bottom of the mudguard and a tin baffle attached to the back of the primary case forward of the box sprocket. My case has a hole drilled in the back of the lower section to allow oil/grit to escape. Chains last ,stay oily and the orriginal 1960 sprockets still look unworn ,although that may be due to good steel and Linklife use. Note also the totally rare engine enclosure (fairshields)? ,possibly made by Avon, never to be seen again.
 
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The part number you supplied is for the lower section of the '68 Commando chainguard.
Atlas REAR CHAINGUARD EXTENSION
 
If you want an example of a fully enclosed oilbath alloy primary case then the 1936 Rudge takes some beating. It also encloses the chain dynamo drive with safety slip device, a sealed dry clutch ,engine shock absorber, gearbox shaft sealing device ., inspection cover and drain plug , OH and a beautiful cast in logo, crossover gearchange and footrest mount. An absolute work of art.
 
norton bob said:
If you want an example of a fully enclosed oilbath alloy primary case then the 1936 Rudge takes some beating. It also encloses the chain dynamo drive with safety slip device, a sealed dry clutch ,engine shock absorber, gearbox shaft sealing device ., inspection cover and drain plug , OH and a beautiful cast in logo, crossover gearchange and footrest mount. An absolute work of art.
Click to expand...
Intresting, I've googled up the Raleigh Rudge chianguard to see an out line of it.
Also Draganfly made one, or used to make on.
Peter Furlong was another.
 
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