I think 35mm OD donor wheel is a much different consideration than my 42mm OD wheel, rendering my successful modification irellevant to the modification T ingermanson plans to do. I'd look for a different donor wheel. there are many around
yes, the suzuki stock bearing bore is 35mm. not sure i'm breaking new ground, as i'm sure it's been done before, but maybe there's a lack of experienced voices, because they are all dead from front end failure! ha!
i did a bunch of hub measuring and some bearing research. the 6003 bearing has a notably lower rating for dynamic as well as static loads, than the stock 6202 bearing. the 6203 bearing has an increase in rated loads, but has a 40mm outer dimension.
the bore of the hub is relatively thin walled (compared to the other hubs i measured) at .250". it has stiffening ribs as well as a deserved reputation for being overbuilt, however, boring 5mm from the hub is questionable, at best. i'd rather have a failed bearing than a failed hub body.
since the point of no return has been passed for the brake plates by their previous owner, i think i'm going to give the smaller bearings a shot and keep a close eye on them.
??? How do you derive at that statement, considering all loads have to pass through the sliders? Isn't it rather the opposite?
Furthermore, I have never seen fork stanchions fail due to fatigue. It may have been a problem in the 50's as stanchions had small OD's .....
-Knut
yes, the loads pass through the sliders, but the distance of cantilever of the fork tubes from the yoke is considerably longer than the distance of cantilever from the axle to the lower fork bush, hence the number of bent fork tubes rather than the number of bent fork lowers. the longer the cantilever, the higher the multiplier of force. no?
the above bmw fork failures resulted from a leading (cantilevered) axle failing at the point of attachment to the rest of the lower. norton roadholders use an inline axle, so that specific mode of failure is all but off the table.
failure from fatigue is completely indistinguishable from a single impact failure without serious testing. most (all) guys who bend their forks, replace the tubes and get on with it.
it would be good know the steel alloy being used for tubes these days. a DOM or 41xx alloy would be far stronger and resilient than the steel tubes of yore.