Well, this isn't exactly going to plan (as I expected, tbh).
I ordered a bearing set from Drags... and waited. Eventually I phoned and found out they don't have any in stock (I assume it was the top hat spacer they were talking about). This despite the fact that their website said "excellent stock level." I think what they meant was "no stock level."
OK, never mind, order the "VH Front Wheel Bearing Kit" from Feked. This one:https://www.feked.com/front-wheel-beari ... -four.html
Now, being a bit of an engineering numpty I just removed both of the old bearings and pressed the new ones into the wheel. They fitted fine. Then I put the wheel back on the bike. Of course, because the spindle diameter steps down the bearing on the right (brake side) was wildly oversize and the wheel had an inch of side to side drift!
Now even my limited engineering skills spotted this one. Righto, thinks I, I need to reuse that top hat spacer. So, top hat successfully removed from old bearing. Offer top hat up to new bearing and... no way is it going in. The inner diameter of the new bearing is 4mm smaller than the OD of the top hat.
So what I have is, to my untrained eye, two left hand bearings. The original right hand bearing is narrower and has a larger ID. Am I doing something ridiculously wrong here or am I going to have to bin one of the bearings and do what you did Simon, which is to source a bearing which is the same dimensions as the original RH bearing? If this is the case, it makes me wonder why that size isn't just supplied in the first place. Unless of course I've missed something like "use these bearings with the special spindle we supply".
Simon, could you let me know what size RH bearing you bought in the end? With a link if at all poss, thanks.
Finally, I have to say that on the LH side of the spindle (where the bearings do actually fit) there appears to be the slightest amount of play, and measuring the spindle reveals the area where the bearing sits is around .005" down compared to the central area of the spindle. What's an acceptable amount of wear, any ideas?
Looking at the Feked Ariel wheel bearings on offer, some of the other sets do seem to have two different sized bearings, which is what I would have expected for the set that I ordered from them:https://www.feked.com/wheels/wheel-bear ... -bearings/