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Rear disc conversion

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Oddjob:
Just had this thought whilst seeing the finished part but have you considered whether the flanges on the hub that the new carrier uses are strong enough for the forces generated by braking?

Sorry if you’ve covered this before as I’m on an IPad in bed and it’s slow to load pages so going through 14 pages isn’t an option.

allankelly1:
Hi Oddjob

Not using the narrow webs at all but the locker unit places all the brake load direct on the side of all the four cast bosses that hold the four bonded bushes that carries the final drive sprocket. and due to this “drive” on the hub this is the strongest part of the hub casting as this section is also capable of handling all the drive forces created by the final drive sprocket too plus the hole / hub casting itself is strengthen further in this area via the bonded bushes steel sleeves that are pressed into the four holes from the outside of the hub.

Each leg is a “snug “ fit in this “cavity”  hence why I have a circular groove on the boss legs to create a slot so it misses the circular web shown in the second picture that is in the base of these four cavities as well as the four webs radiating out from the hub centre to  the the outside








Plus being a solid billet rather than four separate legs like the below picture means it is very strong at resisting torque loads and torque load is spread evenly over the four boss sidewalls and the four disc locker legs




Like I said maybe a bit OTT as a solution but certainly is a good solution to my problem on how to “lock” the disc to the main hub

To be honest the weakest link in both the drum or disc system has to be the torque arm mounting points but that is the same design and used the same size bolts  (M8)as an original torque arm so no change there either

Best wishes Al


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Oddjob:
On my PC now and yes I see what you mean now.

allankelly1:
Hi all

Hope you are all well

Well that’s the rear disc conversion finally finished now I am back on my feet.

This was the disc locker unit that needed a bit of fettling so it fitted snugly in the original rear hub.





Also back end now fitted with that original but now repainted Dresda swing arm, and a nice pair of YSS piggy back shocks from Brooks Suspension.

Really pleased on the final result and bike certainly looking very non standard, but will leave the final judgment to yourself











Lastly going to leave the rear disc plain for now, but may drill when the front end forks are is stripped and modified to fit the Race Tec emulator and spring kit that has finally arrived from the states

Catch up soon and have a good weekend Al


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Laverdaroo:
that looks sooooooooo trick! pegs, shocks, swing arm and disc. :o


'Top blingin'     no G ;D

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