Material selection

[Yow Ling]

FFS are you guys on drugs?

just make the spacers and fit them, all this cad shit and computer modelling is just a bit over the top, they are just wheel spacers arent they?

[gatch]

Manufacturing axles from scratch ? 4340 and you will never break them, never.

Axles spacers make them from whatever you find on the floor, forget radii, not necessary. So long as the spacer doesn't push on the bearing seals you can put whatever form you like on there, the minimal torque will not crush them.

Have fun

[Brian d marge]

Manufacturing axles from scratch ? 4340 and you will never break them, never.

Axles spacers make them from whatever you find on the floor, forget radii, not necessary. So long as the spacer doesn't push on the bearing seals you can put whatever form you like on there, the minimal torque will not crush them.

Have fun

A. because I can
B. Dont ever foget stress raisers , ever . ( though in this case it wouldnt amount to much , I would still radius ..but thats just me ......)
c. 10 gallon hats blow off on the gallop

Stephen

[Brian d marge]

FFS are you guys on drugs?

just make the spacers and fit them, all this cad shit and computer modelling is just a bit over the top, they are just wheel spacers arent they?

See below

Stephen

[Yow Ling]

See below

Stephen

there is nothing below, maybe my first guess was right

[imdying]

I assume I have the arrangement right ... now its a tropical Monsoon ... and 33 deg

Uggh, sounds horrid.

The bearing is about half that size. The OD of the recessed portion is the same OD as the inner race Hadn't considered putting a radius there, but can do

Yes for the slower bikes we have a about a 6m length (axle and head stock spacers are the same which is why we have so much of it) of 10mm ID ~1.5mm wall steel tube that we just cut portions off of with a tube cutter. The rest of this front end is billet/carbon fibre, so we'll keep putting some extra effort in these particular spacers, but thanks for the comments anyway Mike.

Manufacturing axles from scratch ? 4340 and you will never break them, never.

Awesome, you answered another question I would have had! Can you recommend anyone who would stock 4340 in 10mm bar? Sadly none of the off the shelf items are suitable, as I want an extra 10mm of thread either side to screw some nylon sliders too.

A. because I can
B. Dont ever foget stress raisers , ever . ( though in this case it wouldnt amount to much , I would still radius ..but thats just me ......)
c. 10 gallon hats blow off on the gallop

Ok, c is a new one to me

[gatch]

Awesome, you answered another question I would have had! Can you recommend anyone who would stock 4340 in 10mm bar? Sadly none of the off the shelf items are suitable, as I want an extra 10mm of thread either side to screw some nylon sliders too.

I'm not sure where we get ours from, I don't even know if a wholesaler would sell short lengths of such small diameter stock. Unfortunately I don't know any suppliers down south, try the yellow pages ?

Edit - How are you going to manufacture the axles ?
I'd screw cut the threads on a lathe and avoid a die-nut if possible, they make sloppy threads when used in conjunction with off the shelf nuts. Just a thought.

[Brian d marge]

Had to guess at the thickness of the brake carrier plate, 10mm ? and the forces involved, eg I assume your 90 kg !

anyway this gives you an estimate to which to work from.

One thing that worries me Carbon fibre tube over a fork bottom ? I have 0 experience with the design of cf , but I the Max bend moment of that tube worries me a bit..

Someone with more experience hopefully could set my mind at ease



Stephen

Ps if doing an axil see if there is a different bearing that has the same od and thickness but a bigger ID then you can make the axil with a larger dia and thinner walled , eg stiff but light

[LBD]

The 5083 is/was generally only available as sheet/plate and is intended for marine construction with corrosion and fatigue resistance along with strengths around the heat affected zones of welds

[imdying]

One thing that worries me Carbon fibre tube over a fork bottom ? I have 0 experience with the design of cf , but I the Max bend moment of that tube worries me a bit..

Someone with more experience hopefully could set my mind at ease

Hey what's the worst that could happen

Ps if doing an axil see if there is a different bearing that has the same od and thickness but a bigger ID then you can make the axil with a larger dia and thinner walled , eg stiff but light

I did look, but sadly no Now if I were to build a wheel, or even a hub for a two piece wheel...