SOHC.co.uk Forums > CB350/400
Rear disc conversion
SumpMagnet:
so many toys to have in the toybox :) I have a small 3D printer....not one that can turn out larger parts, but its still so handy. Want a lathe too now I actually have space for one. Dad has an old lathe he wants to donate to my cause.....but....it's a heavy old lump, and he's 200 miles away. Cost of transportation is crazy.
So I'm just making do with watching what other people are doing! And I love seeing projects like this unfold, and the problems getting solved one by one.
allankelly1:
Bit more of the jigsaw solved and had a go at designing and printing a prototype caliper hanger tonight now my disc diameter is correct
It not quite right as need to allow a bit more clearance for the lower section of the swing arm but not too far off either so happy so far
Not at work tomorrow so can sort out the changes and print a mk2 version
Happy days
Best wishes Al
Sent from my iPhone using Tapatalk
Laverdaroo:
If you dont mind me asking, what sort of cost can you attribute to the parts you're printing and WTF do you print them out of? Sorry, learning here ;D
K2-K6:
Very good to see this project documented, and some great engineering skills.
Something in detail I feel that may be worth considering regarding the drive from wheel to disc flange as I can't see much detail in the photo. It looks to me as the "poles" are to be bolted to the disc carrier but doesn't appear to hold much resistance to them being displaced under torque load.
Taking a different approach would improve resistance to that possibility. If you visualise something in the form of a car brake drum bolted to the rear of the disc carrier with it's open edge toward the wheel drive lugs, then machine castellation form into the edge such that it drops within the drive lug pockets. The rotational load would be more effectively resisted with the "skin" of the drum structure to transfer torque between the two.
If the detail location is available within the structure, you could put studs into that drum face aligned with holes through the disc mount and disc such that assembly would be placing the drum into place, disc onto studs, then tighten the whole assembly (very like a car wheel stud assembly) to make a very simple and high torque transfer without having to have multiple mounts.
allankelly1:
Hi K2-K6
That what I have been thinking about
The 4 poles were just an idea but going to look to see if I can develop this idea this into a solid billet rather than 4 separate legs and then design the bottom section to match as much as possible the four cavities in the hub
This will be much stronger and almost over engineered
Good this is like the other parts I can print a prototype and see how it fit before I make the final part
Catch up soon
Best wishes Al
Sent from my iPhone using Tapatalk
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