I have recently bought a Coker 36". Almost immediately I noticed that one
of the bearings moves along the axle (annoying), but the problem I
referred to above is that the tyre sometimes folds in a very worrying way
as if it has no air in it and is about to come off the rim. Mostly this
seems to happen on sharp twists and turns. Nothing bad has happened so
far. I’m currently riding at 40+ psi (I know it says 32 in the docs). I
weigh about 240 pounds (17 stones) - a possible factor.
Does anyone else see this, and should I worry about it (much). I love the
Coker and would hate for it to get knackered in a short time.
> I have recently bought a Coker 36". Almost immediately I noticed that > one of the bearings moves along the axle (annoying),
This is common with Cokers. You can take the wheel off & gently squeeze
the fork ends together until it fits properly. Be careful that the wheel
is centered in the frame when you’re done. Or you could use shims or
spacers to keep the bearings where the frame chooses.
but the problem I referred to above is that > the tyre sometimes folds in a very worrying way - as if it has no air in > it and is about to come off the rim. Mostly this seems to happen on > sharp twists and turns. Nothing bad has happened so far. I’m currently > riding at 40+ psi (I know it says 32 in the docs). I weigh about 240 > pounds (17 stones) - a possible factor.
I weigh about what you do. Try more air. I use about 50. The only blowout
I’ve heard of was at about 60psi. My tires don’t last as long with lots of
air. It’s worth it to me to make the ride easier. -Mark
Arnold the Aardvark <aardvark@foxholly.demon.co.uk> wrote: > Mostly this seems to happen on sharp twists and turns. Nothing bad has > happened so far. I’m currently riding at 40+ psi (I know it says 32 in > the docs). I weigh about 240 pounds (17 stones) - a possible factor.
I should put some more presure in that there tyre Al, Paul and I run ours
at about 50 psi and weigh a fair bit less than 17 stone. The tyre has
shown no stress being run at 50 psi and I expect could go up to 60 with no
problem. Give it a try. sarah
–
Euro-cycle 2001 20 - 22 July Plymouth UK A european unicycle convention http://www.eurocycle.org
Loctite Sleeve Retainer will fix the bearing problem. My Coker had the
same problem with the bearings and Loctite fixed it.
Get the Loctite 609 or 640. This is different stuff than the Loctite
Thread Locker. The Sleeve Retainer products are designed to hold press
fit or slip fit parts while the thread locker is designed to hold
threaded parts.
When applying the Loctite make sure that both parts are clean and free of
grease and dirt or you will not get a good bond. Loctite also sells a
primer which will clean off the parts and give you a stronger bond. Or you
can just use a degreaser and alcohol.
Loctite Sleeve Retainer is hard to find in the stores. Some auto parts
stores carry it and industrial supply stores also carry it. The good
news is that UnicycleSource just started stocking it so now it is much
easier to find.
Even with the sleeve retainer the bearing will still be easy to remove
with a bearing puller so don’t worry about the Loctite making it too
difficult to remove the bearing later.
I would also suggest trying the sleeve retainer on the bearings of the Sem
2 wheeler that is having slipping problems. It’s likely the bearings are
slipping on that uni too.
john_childs
>From: “Arnold the Aardvark” <aardvark@foxholly.demon.co.uk> > >I have recently bought a Coker 36". Almost immediately I noticed that one >of the bearings moves along the axle (annoying), but the problem I >referred to above is that the tyre sometimes folds in a very worrying way >- as if it has no air in it and is about to come off the rim. Mostly this >seems to happen on sharp twists and turns. Nothing bad has happened so >far. I’m currently riding at 40+ psi (I know it says 32 in the docs). I >weigh about 240 pounds (17 stones) - a possible factor. > >Does anyone else see this, and should I worry about it (much). I love the >Coker and would hate for it to get knackered in a short time. > > >Arnold the Aardvark
> Arnold the Aardvark <aardvark@foxholly.demon.co.uk> wrote: > > Mostly this seems to happen on sharp twists and turns. Nothing bad has > > happened so far. I’m currently riding at 40+ psi (I know it says 32 in > > the docs). I weigh about 240 pounds (17 stones) - a possible factor. > > I should put some more presure in that there tyre Al, Paul and I run > ours at about 50 psi and weigh a fair bit less than 17 stone. The tyre > has shown no stress being run at 50 psi and I expect could go up to 60 > with no problem. Give it a try.
I agree. My Coker feels sloppy to me with less then 40psi in the tire. I
usually run about 45-50.