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Re: Any Wheel and size!

Posted: Mon Sep 16, 2019 11:11 am
by grovenor-2685
That should just be the minimum width on the drawing, a lot of manufacturers went for the maximum.

Re: Any Wheel and size!

Posted: Thu Sep 19, 2019 12:06 pm
by best33
Have you thought of bonding the wheels into the tyres using additional printer resin and solidifying it with a UV lamp? In doing so you can use the machining marks on the inside of the tyre to lock the printed insert in place.

Mark Humphrys

Re: Any Wheel and size!

Posted: Fri Sep 20, 2019 5:01 pm
by Guy Rixon
David Bigcheeseplant wrote:Previously I have made the wheels a tight fit in the tyre with a bit of glue so they stay put. I have used Gibson tyres in the past but if I can get tyres CNC machined the I would design the tyre so that the centre has a more positive location. The fit I can get on an axle is similar to that of a Gibson wheel.
David

How about making the centre a sliding fit into the tyre and locking them together with Loctite 603 or similar retainer? If the tyre is turned with a groove on its inside and the centre is printed with a matching groove in its outside, then the retainer should set as an annulus that both retains the tyre strongly and centres the tyre.

Re: Any Wheel and size!

Posted: Sat Sep 21, 2019 7:54 am
by billbedford
best33 wrote:Have you thought of bonding the wheels into the tyres using additional printer resin and solidifying it with a UV lamp? In doing so you can use the machining marks on the inside of the tyre to lock the printed insert in place.


That doesn't work. The cured resin is opaque to UV, meaning the joint will cure as a skin on the outside but leave uncured resin on the inside.

Re: Any Wheel and size!

Posted: Sat Sep 21, 2019 7:57 am
by billbedford
Guy Rixon wrote:How about making the centre a sliding fit into the tyre and locking them together with Loctite 603 or similar retainer? If the tyre is turned with a groove on its inside and the centre is printed with a matching groove in its outside, then the retainer should set as an annulus that both retains the tyre strongly and centres the tyre.


I've never been able to get 603 to hold cured resin. Mainly, I think, because of no being able to make a small enough gap between the tyre and the centre to be truly anaerobic.