SOHC.co.uk Forums > CB350/400
Rear disc conversion
allankelly1:
Hi
Ok will look into the need not to have a spacer tube
And have just dry fitted it tonight just the see what I need to modify(and check how it fits)
I love the design and love the use of taper roller bearings (proper job) rather than plain bushes and oring seals to keep the dirt out.
The only real snag is the arm is about 16mm smaller across the legs compared with the Honda item due to the arm being a 25mm wide box section so to keep wheel geometry correct I will need to
remove 8mm from the sprocket side spacer and then check chain alignment / sprocket clearance
The only other small issue I see is the caliper hanger not won’t fit / align with the disc correctly due to increase in the box section size (as originally the hanger was designed to be inboard of the swing arm
so to get round this in will machine a small
“close†10mm slot in the bottom of the arm so the caliper hanger fits inside the box section rather (and the caliper hanger will
also act as one of the wheel pulls too) This will then create the correct calliper off set and as it is located in the arm box section and will look rather neat
Motto of the story is never change a idea half way thru a project but I think once done it will look rather special and to be honest I love problem solving
Catch up soon
Best wishes Al
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allankelly1:
Ps thanks for the torque settings Etc
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allankelly1:
Hi all
Even with a bitch of a back still managing to do some bits
Did another dry fit of the newly acquired Dresda swing-arm today
As mentioned I needed to modify it slightly, as due to it being a box section, the caliper hanger needs to “fit†inside by adding a slot in the bottom as you can see in the following pics
Now need to make a different wheel pull for that side due to how I have fitted the hanger inside the box section, but as Baldric would say “sir I got an idea†and yes it is as cunning as a fox
A bit more of the project sorted
Catch up again soon and have a good weekend Al
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allankelly1:
Morning all
Started the design for the disc locker unit
First started with a CAD model of what I thought should work
Then did a print in ABS
Note slots are to clear all internal webs to maintain hub strength
Then tried it in the original hub where the four legs locate snuggly in the four pockets between the bonded rubber casting bosses
On initial fit it really is a nice snug fit
Finally attached to the disc holder and refitted
And final fit in the hub
Disc locker looks spot on and I think is more than up to the task of stopping disc carrier rotation under braking
Still waiting the other part in their final material and once these are in and fitted will crack on with this final part in aluminium
Think that’s all for now
Catch up again soon
Best wishes Al
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Bryanj:
Having heard from a man at work that his 400 drum did same and how long it took to find one it may be worth you marketing kits
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