Grendel (my Coker) was making this grinding noise, so I stared at it for a
while, got the toolbox, loosened the fork nuts, pushed the fork in a quarter
inch, tightened the nuts. The grinding sound is gone.
Mind you, when I grabbed the toolbox Diva ran to the other side of the house
and hid and Penny started crying. But nobody had to go to the vet this
time.
Of course, the job didn’t require power tools.
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By fork nuts, I take it you mean the nuts and bolts on the bearing caps? Why would pushing the fork in a quarter inch solve the problem? Sounds like something was rubbing or hitting. Or maybe the bearings were not seated properly. Do you see any evidence that would tell you what was going on?
> Scott Kurland wrote:
> > Grendel (my Coker) was making this grinding noise, so I stared at it
> > for a while, got the toolbox, loosened the fork nuts, pushed the fork in
a
> > quarter inch, tightened the nuts. The grinding sound is gone.
>
>
> Scott,
>
> I’m not quite sure I follow…
>
> By fork nuts, I take it you mean the nuts and bolts on the bearing caps?
What’s a bearing cap?
Um, the fork is attached to the axle with clamp thingies with a bolt and nut
on either side of the axle.
> Why would pushing the fork in a quarter inch solve the problem?
Because the crank was rubbing against the fork, so I pushed the fork in a
quarter inch away from the crank.
> Sounds
> like something was rubbing or hitting.
Yep.
> Or maybe the bearings were not seated properly.
What’s a bearing?
> Do you see any evidence that would tell you what was going on?
Yep, see above. More questions are welcome, I’d be happy to brag about my
newfound mechanical genius.
> Hmmm.
>
> This is what I was wondering. Did the bearing holders on the frame not
> line up nicely with the bearings themselves?
>
> Jason
Er, maybe. What’s a bearing look like? Bearing holder?
>
>
> > I’m not quite sure I follow…
> >
> > By fork nuts, I take it you mean the nuts and bolts on the bearing caps?
Perhaps it’s the same thing that was happening on my Coker. The left
bearing had slipped out along the axle until it was so close to the crank
that the crank was rubbing against the bearing holders. I tapped the
bearing back into place (closer to the hub flange) and the grinding/scraping
sound went away. I suspect that with time this bearing will drift back out.
If I was more thorough I’d have applied some bearing sleeve retainer (John
Childs, correct me if I’m wrong here) to keep the problem from happening
again.
-mg
“yoopers” <yoopers.au24y@timelimit.unicyclist.com> wrote in message news:yoopers.au24y@timelimit.unicyclist.com…
>
> Scott Kurland wrote:
> > Grendel (my Coker) was making this grinding noise, so I stared at it
> > for a
> > while, got the toolbox, loosened the fork nuts, pushed the fork in a
> > quarter
> > inch, tightened the nuts. The grinding sound is gone.
>
>
> Scott,
>
> I’m not quite sure I follow…
>
> By fork nuts, I take it you mean the nuts and bolts on the bearing caps?
> Why would pushing the fork in a quarter inch solve the problem? Sounds
> like something was rubbing or hitting. Or maybe the bearings were not
> seated properly. Do you see any evidence that would tell you what was
> going on?
>
> Bruce
>
>
> –
> yoopers - Bruce & Mary Edwards
> ------------------------------------------------------------------------
> yoopers’s Profile: http://www.unicyclist.com/profile/31
> View this thread: http://www.unicyclist.com/thread/20379
>
The bearing caps or holders are the U-shaped thingies that clamp on the topside and underside of the bearing. At least that’s what I call them. Either way, sounds like you got it nipped in the bud.
Sounds like your bearings were walking out the axle on you forcing the forks into the cranks. I think I remember other posts on Coker walking bearings. They like to go out for a walk once in awhile ya know.
Gotta know these things 'cause my Coker should be in the mail any day now.
I think the, clamp thingies’ are the bearing holders or cups, and they
clamp on to the bearings which are attached to the axle.
> Um, the fork is attached to the axle with clamp thingies with a bolt and
> nut on either side of the axle.
Jason Neumann wrote:
>
> Hmmm.
>
> This is what I was wondering. Did the bearing holders on the frame not
> line up nicely with the bearings themselves?
>
> Jason
>
> > I’m not quite sure I follow…
> >
> > By fork nuts, I take it you mean the nuts and bolts on the bearing caps?
You sound like you’re really looking forward to getting your Coker but I have a question for you, how do you persuade your better half a Coker is an essential item? I need to now how you did it.
What actually happened is that I begged and pleaded for one before we went to UNICON to which Mary admonished that we couldn’t spend any more money on things with the expenses of the Seattle trip coming up. She said we could think about it when we returned. Well, here it is post-UNICON trip and I’m holding her to her word.
Or you could apply the [political reference deleted] party trick like I tried saying that we had to buy three Cokers, one for me and one for each of the boys. When we settle on just one, look how much money we saved.
As far as essential, hmmm…that’s a hard one. I’m following John Drummond’s lead and saying that I need the exercise. John rides an hour a night.
Yup, That’s exactly the problem that the Loctite sleeve retainer fixes.
The bearings are kept in place by a press fit on the axle. Sometimes that press fit is tight and the bearings stay in place and sometimes the press fit is loose and the bearings take a little walk towards the crank.
If the bearings have slipped once, they’ll slip again. Time to learn how to pull a bearing off, add Loctite, and press the bearing back on.
Wrong question.
Correct question: what convinces you that a ‘better half’ is an essential item? With a little application, you can learn to cook and clean. ;0)
> …and where did the name Grendel come from. Neat name for a Coker.
>
> B
>
>
> –
> yoopers - Bruce & Mary Edwards
When Seamus Heaney’s translation of Beowulf was published in 2000, I picked
it up and read it and was just blown away. I actually read both versions
(Old English on the left, Modern English on the right) contemporaneously,
and I don’t read Old English. Pretty language, though.
> I think the, clamp thingies’ are the bearing holders or cups, and they
> clamp on to the bearings which are attached to the axle.
Thank you for the vocabulary lesson. I’ll try to remember it, since I’m
pretty sure this is what happened the last time I had to take Grendel into
the bike shop.
>
> > Um, the fork is attached to the axle with clamp thingies with a bolt and
> > nut on either side of the axle.
>
>
> Jason Neumann wrote:
> >
> > Hmmm.
> >
> > This is what I was wondering. Did the bearing holders on the frame not
> > line up nicely with the bearings themselves?
> >
> > Jason
> >[color=darkred]
> > > I’m not quite sure I follow…
> > >
> > > By fork nuts, I take it you mean the nuts and bolts on the bearing[/color]
caps?
> The bearing caps or holders are the U-shaped thingies that clamp on the
> topside and underside of the bearing. At least that’s what I call them.
> Either way, sounds like you got it nipped in the bud.
Yee ha!
>
> Sounds like your bearings were walking out the axle on you forcing the
> forks into the cranks. I think I remember other posts on Coker walking
> bearings. They like to go out for a walk once in awhile ya know.
Yep, I think this is what happened last time too.
>
> Gotta know these things 'cause my Coker should be in the mail any day
> now.
>
> Bruce
I knew that, for loctite issues, I could count on you John. Thanks.
-mg
“john_childs” <john_childs.au5lz@timelimit.unicyclist.com> wrote in message news:john_childs.au5lz@timelimit.unicyclist.com…
>
> Michael Grant wrote:
> > * I suspect that with time this bearing will drift back out. If I was
> > more thorough I’d have applied some bearing sleeve retainer (John
> > Childs, correct me if I’m wrong here) to keep the problem from
> > happening again.
> > *
>
> Yup, That’s exactly the problem that the Loctite sleeve retainer
> fixes.
>
> The bearings are kept in place by a press fit on the axle. Sometimes
> that press fit is tight and the bearings stay in place and sometimes the
> press fit is loose and the bearings take a little walk towards the
> crank.
>
> If the bearings have slipped once, they’ll slip again. Time to learn
> how to pull a bearing off, add Loctite, and press the bearing back on.
>
>
> –
> john_childs
>
> john_childs (at) hotmail (dot) com
> ------------------------------------------------------------------------
> john_childs’s Profile: http://www.unicyclist.com/profile/449
> View this thread: http://www.unicyclist.com/thread/20379
>
> > * I suspect that with time this bearing will drift back out. If I was
> > more thorough I’d have applied some bearing sleeve retainer (John
> > Childs, correct me if I’m wrong here) to keep the problem from
> > happening again.
> > *
>
> Yup, That’s exactly the problem that the Loctite sleeve retainer
> fixes.
>
> The bearings are kept in place by a press fit on the axle. Sometimes
> that press fit is tight and the bearings stay in place and sometimes the
> press fit is loose and the bearings take a little walk towards the
> crank.
>
> If the bearings have slipped once, they’ll slip again. Time to learn
> how to pull a bearing off, add Loctite, and press the bearing back on.
Okay.
Um, please suggest an URL. Or I could go to that bike repair workshop
Sunday…
Auto supply shops usually have Loctite products or Permatex products. Loctite and Permatex are the same stuff just different brands. You should be able to find it at a local auto supply shop (eg. NAPA, etc.).
Loctite and Permatex have almost the same part numbers so the Permatex 640xx sleeve retainer is the same as the Loctite 640xx sleeve retainer.
If you don’t want to do it yourself a bike shop could pull the bearing off, apply the Loctite/Permatex, and press the bearing back on. You will likely have to supply the Loctite/Permatex because the bike shop will probably not have it.
The first time I needed to replace a bearing on my Pashley I took it to a bike shop because I didn’t have the tools to pull the bearing off. After that I bought a bearing puller and learned to do it myself.
The first time I pressed a bearing on I ended up damaging the bearing (I put too much pressure on the seal). After that I learned what not to do (don’t put pressure on the seals). When pressing the bearing on, use a short piece of pipe/conduit/unicycle seatpost to put pressure only on the inner bearing race. At least it was a cheap bearing that I ruined. It’s an easy repair job once you’ve done it once and have the right tools.
I haven’t actually mentioned it yet, well not directly sort of working up to it but no UNICON or similar, hmm…
Problem here is that my son has been promised a giraffe for his birthday, hmm…
I used this one to get my Muni it worked, but a second time, hmm…
It just occurred to me that as our anniversary is coming up I could buy here an expensive (well seemingly expensive) pressie so she’d feel guilty and then, hmm…
I do the cooking and cleaning ‘cause my wife goes out to work and I work from home, great arrangement and has the advantage that I can go for a Muni ride in the day when no ones around
it worked, but a second time, hmm…