Hi there! My current project is making a muni out of a suspension fork.
Now I just have to add (and in worst case make) the bearingholders. The
fork is aluminium, and the bottom of the fork is simply open tubing.
Since welding aluminium have some negative side effects concerning
material strenght, I think Pashley lolipop bearingholders are good
alternatives to main cap bearingholders welded to the frame. The
bearingholders are strong, but the attachment to the frame is
critical. Any opinions on using shims around the bearingholders if
they are too small?
Dimensions of the Pashley bearingholders; All help on the following would
be useful (mm’s prefered, inches OK): What diameter is the part inserted
to the frame (ID of tube)? How long is this insertion? How far up the
insertion (from the bearing side) are the holes positioned?
Do you have any other ideas on bearingholders? (I will use a Profile
setup, metric size bearings (40mm))
BTW, the general opinion seem to be lolipop bearingholders make it hard
to remove the wheel from the frame. I don’t agree, four screws, and off
it goes…
> Dimensions of the Pashley bearingholders; All help on the following > would be useful (mm’s prefered, inches OK): What diameter is the part > inserted to the frame (ID of tube)? How long is this insertion? How far > up the insertion (from the bearing side) are the holes positioned? > > Do you have any other ideas on bearingholders? (I will use a Profile > setup, metric size bearings (40mm))
The Pashley bearingholders takes 35mm (OD) bearings, so they’re not useful
for me. (Unless there are 35mm bearings that can accomodate an 3/4"
19.05mm axle)
I’ll just have to figure out something else. SKF have all kinds of
bearinghouses, using industrial standard bearingholders instead of
manufacturing my own would make replacement easy if needed. I’ll let you
know if I find something useful for unis.
The Pashley holders take 35mm OD bearings but I think you can get this
size for a Profile hub so it’s just something to bear in mind. I could be
wrong on this so check - Unicycle Source UK for the holders and US for the
Profile bearing sizes.
As for taking off the wheel it’s more of a pain because once you unscrewed
the nuts you also have to completely unscrew the bolts as well - they
don’t just slide out. That would take you at least an extra minute to get
them out and another to put them back in. Not a huge amount of time but
quite annoying when you have to do it. The bearing holders also make it a
lot harder to replace the bearings themselves since you can’t use a
standard bearing puller.
> Hi there! My current project is making a muni out of a suspension fork. > Now I just have to add (and in worst case make) the bearingholders. The > fork is aluminium, and the bottom of the fork is simply open tubing. > > Since welding aluminium have some negative side effects concerning > material strenght, I think Pashley lolipop bearingholders are good > alternatives to main cap bearingholders welded to the frame. The > bearingholders are strong, but the attachment to the frame is
critical. > Any opinions on using shims around the bearingholders if they are > too small? > > Dimensions of the Pashley bearingholders; All help on the following > would be useful (mm’s prefered, inches OK): What diameter is the part > inserted to the frame (ID of tube)? How long is this insertion? How far > up the insertion (from the bearing side) are the holes positioned? > > Do you have any other ideas on bearingholders? (I will use a Profile > setup, metric size bearings (40mm)) > > BTW, the general opinion seem to be lolipop bearingholders make it hard > to remove the wheel from the frame. I don’t agree, four screws, and off > it goes… > > Happy unicycling Staffan Palm Sweden > >