Slimline rear wheel offset

Previously wrote:

Hi all,

I'm trying to find the correct offset dimension between the rear hub and wheel rimona Slimline frame.Doesanyone know what this should be?

Thanks,

Tom

Tom

There is no offset,the hub centre should be inline with the rim centre.

Ron

Thanks for that - it may explain why my rear wheel is not in line with my front wheel. I've checked everything else I can think of and that seems a possibility after my wheels were rebuilt.

Tom

Check that your front wheel is centred between the forks. It is easy to do by measuring between the rim and the mudguardmount on the fork boots. Should be the same each side.

I once bought a Norton which turned out to have 7" yokes but the later fork boots that normally go with the 7&3/8" yokes. The result being that the brake plate (and wheel) was pushed over to the left and the wheels never lined up properly.

Hi Tom, yes all wheel rims should be aligned centrally to the hub flanges...ie; no offset.

So assuming that the rear wheel spacers are all correct and used with the correct hub, and the swing arm is not distorted,the rear wheel shoud be absolutely central to the frame. A Front wheel centrality check is easy as previously described. However to check the rear wheel alignment is not quite as easy as it adjustable in the forward angle that it points to and can always be made to align even if there is an offest error. but this could leave the rear wheel still over to one side which is obviously wrong.

You will need to check after you have aligned the rear wheel with the front one. Then measure if the rear wheel rim is central to the frame at a vertical position in relation to the spindle or central to the swing arm at the front of the rim on both sides.

My laser alignment tool, onced made and fitted , gives you a convenient way of doing the front to back wheel alignment:

http://www.realclassic.co.uk/techfiles/wheelalignment.html

Les H

Previously wrote:

Hi Tom, yes all wheel rims should be aligned centrally to the hub flanges...ie; no offset.

So assuming that the rear wheel spacers are all correct and used with the correct hub, and the swing arm is not distorted,the rear wheel shoud be absolutely central to the frame. A Front wheel centrality check is easy as previously described. However to check the rear wheel alignment is not quite as easy as it adjustable in the forward angle that it points to and can always be made to align even if there is an offest error. but this could leave the rear wheel still over to one side which is obviously wrong.

You will need to check after you have aligned the rear wheel with the front one. Then measure if the rear wheel rim is central to the frame at a vertical position in relation to the spindle or central to the swing arm at the front of the rim on both sides.

My laser alignment tool, onced made and fitted , gives you a convenient way of doing the front to back wheel alignment:

http://www.realclassic.co.uk/techfiles/wheelalignment.html

Les H

For those odd people who do not realise I was answering Tom's question specifically about the wheel offsets on a Norton Slimline featherbed, please read the first part of my answer as BOTH wheel rims rather than all.

Thanks

Les

Happy now Rohan?

Correct, there is no offset for the Norton F/bed rear wheel BUT there is an offset for the front wheel. If your front wheel has been built without an offset you can adjust this with a spacer between the brake plate and the slider.

Nothing wrong with a bit of gadgetry but a Mk 1 eyeball works just as well.