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

[allankelly1]

Hi Bryan

Trouble is I also have a day job and other stuff going such  a family and a 3d printing cottage business running in the background

But once the project is done I would only be too happy to share drawings etc so anybody who wants to do the change rather than start from scratch at least will have all the required parts drawn so they can then get the bits made by their supplier

Of course a lottery win might change that


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[SteveD CB500K0]

Blimey.

3D printed cottages…


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[taysidedragon]

Blimey.

3D printed cottages…


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Funnily enough,  they are 3D printing houses!

[K2-K6]

Blimey.

3D printed cottages…


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Funnily enough,  they are 3D printing houses!

Even more amusing that all buildings are effectively 3D "printed" if you think further about it, just the scale and materials that differ from how we look at small printers now.
Builders are just the mechanism in a giant scalable 3D printing machine, particularly if you watch a time lapse recording of a building going upward.

[taysidedragon]

Don't call a bricky a robot. You might get trowelled! 😁

[allankelly1]

Blimey.

3D printed cottages…


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[allankelly1]

Hi all

Quick update

Got my first set of parts back from my CNC friend

All now fitted and brake bleed

Looks the biz and I think I will leave the supplied parts in their bead blasted finish for now

All that is left is the disc locker unit and a modified wheel pull for the caliper side ((due to changing the swing arm to a original Dresda unit)  that is now in the making and then hopefully when’s that’s all fitted that this  “project” done and I can move onto that 460cc engine build

Here are the pics

Hope you like

Best wishes and catch up soon Al












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[Laverdaroo]

That is simply awesome Al, well done mate! Loving the bead blasted finish, similar to the finish I got on my carbs. I liked it so much i  had it clear ceracoted to keep it the same colour. Looks really trick too yet subtle. Loving it mate, proper thumbs up from me

[K2-K6]

A fine piece of engineering in bespoke design and manufacture. 

Looks really good and recording of it gives others a real insight into just what it takes bringing something like this to completion. Willing to bet you're going to get quite some questions when out and about riding it.

Cracking work.

[Bryanj]

From an ex mot testers point of view that is awsome engineering but i would like to see some sort of locking device on the bolts holding the stay and caliper, i seem to remeber the manual saying visible locking device like split pin.
As its over 40 that dont really come into it just me being picky