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Ukrobotman Avatar
Ukrobotman Steve Cole
Montgomery, Powys, UK   GBR
Ok, so if I call up Gemini and ask for a front axle like yours and mention you I should end up with similar ... sounds a good plan

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chrisenamels Avatar
chrisenamels Silver Member Chris Brown
Llangadog, Carmarthenshire, UK   GBR
What I've found:

Wheels without tyres 15mm axle: https://www.ebay.co.uk/itm/Pit-bike-wheel-17-front-BARE-wheel-BIG-WHEEL-LUCKY-MX-CW-RFZ/152270373903

Wheels with tyres 12mm axle (will take 25mm bearing): https://www.ebay.co.uk/itm/RIM87-FRONT-17-WHEEL-RIM-WITH-TYRE-FITTED-SDG-FOR-DIRT-PIT-BIKE-70-100-17/362412966097

Tyres with classic pattern: https://www.ebay.co.uk/itm/Maxxis-2-50-x-17-38L-C107-Universal-Motorcycle-Tyre-Fits-Front-or-Rear/132489301877; https://www.ebay.co.uk/itm/MOTORCYCLE-MOTORBIKE-TUBE-TYPE-TYRE-250-17-874/183535783938

When it comes to it I'll go for a pair of the 15mm axle ones for the front with the classic tread tyres, a pair of the 12mm ones for the rear and change the tyres when they wear out. That's all well in the future, the Morgan has to be done first, before the Austin 7 Nippy which is what I'm looking at these wheels for.

Chris



Edited 1 time(s). Last edit at 2018-11-23 04:39 PM by chrisenamels.

Topo Avatar
Topo Silver Member Rich T
East lothian, Scotland, UK   GBR
Hi,

Stub Axles can be an issue, some hubs will only take a bearing with a max I/D of 17mm.
17mm isn't that convenient...you can buy 17mm silver steel (tool steel) but then you have to machine and harden...cost?

I bought some 17mm stub axles from Bizkarts
https://shop.bizkarts.com/Catalogue/Kart-Parts/Commercial-Kart-Parts/Steering-Components-2/Front-Stub-Axle-Assembly-Components/Taper-Bearing-Stub-Axle-Components/Stub-Shafts/17mm-Plain-Stub-Axle-Shaft-Threaded-81640-080-0122

Don't think they will be anything exotic @ £9! You could always ask them if you felt steel grade might be an issue.
Cheers Rich

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Ukrobotman Avatar
Ukrobotman Steve Cole
Montgomery, Powys, UK   GBR
Thanks Rich. The stub axles on the ones I have coming are 25mm and are to short. I plan to cut them off and weld on 16mm bolts to go with the 35mm of 16mm I’d bearings I’ve ordered

Topo Avatar
Topo Silver Member Rich T
East lothian, Scotland, UK   GBR
Hi Steve,
Perhaps you could....?

Remove the 25mm as you plan, (perhaps leave the weld+ a bit of the 25mm axle).
Then drill 16mm all the way through.
Then weld a 1/2 nut to the other side (the inside)
Then use a M16 12.9 high tensile bolt (your axle now locks into the welded 1/2 nut)....through the wheel
Then use another (removable) 1/2 nut to act as a lock nut

So now your axle bolts in from the outside and locks

Couple of potential advantages: No weld on axle= no compromise in axle strength.
If you damage an axle it's easy to change.

Remember a 16mm bolt doesn't quite measure 16mm.......but that's another story!
When I've had to use a bolt I've never had problem.....& in my opinion hard 12.9 bolts are not too brittle, you can still bend them (trust me!)

Ceers Rich

Ukrobotman Avatar
Ukrobotman Steve Cole
Montgomery, Powys, UK   GBR
Thanks Rich, that sounds a good idea. I’ll decide the best route when all my box of bits arrive from Gemini karts this week

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