Slacker - I Drive Update

[Andy Chequer]

On removing the IDrive eccentric it was clear that both the
bearings and the dog bone linkage were shot. The old
bearings were easily removed with a pin punch and some
careful hammering. The new bearings arrived Tuesday and I
put the cups into the frame easily enough.

The bearing tracks on the eccentric seem to be a different
matter though. The tapers are very steep and getting the
tracks to actually take hold is proving difficult. In order
to counter this, I've put the eccentric in the freezer on
its coldest setting, and will boil the bearing tracks before
trying to put them on.

Asides this, do you have any recommendations? How did you
do this bit?

Andy Chequer

 

[Mojo Deluxe]

"Andy Chequer"
<andy@(youdontwantthisbitinit)thisisasparagus.com> wrote in
message news:MPdAc.105502$wd7.50845@front-
1.news.blueyonder.co.uk... <snip>
>
> Asides this, do you have any recommendations?
>
Yeah, don't boil'em. Put them in the oven.

 

[Slacker]

Andy Chequer wrote:
> On removing the IDrive eccentric it was clear that both
> the bearings and the dog bone linkage were shot. The old
> bearings were easily removed with a pin punch and some
> careful hammering. The new bearings arrived Tuesday and I
> put the cups into the frame easily enough.
>
> The bearing tracks on the eccentric seem to be a different
> matter though. The tapers are very steep and getting the
> tracks to actually take hold is proving difficult. In
> order to counter this, I've put the eccentric in the
> freezer on its coldest setting, and will boil the bearing
> tracks before trying to put them on.
>
> Asides this, do you have any recommendations? How did you
> do this bit?
>
> Andy Chequer
>
>
Press them in using a vise/C clamp and a couple blocks of
wood.

--
Slacker

 

[Slacker]

Slacker wrote:

> Andy Chequer wrote:
>
>>On removing the IDrive eccentric it was clear that both
>>the bearings and the dog bone linkage were shot. The old
>>bearings were easily removed with a pin punch and some
>>careful hammering. The new bearings arrived Tuesday and I
>>put the cups into the frame easily enough.
>>
>>The bearing tracks on the eccentric seem to be a different
>>matter though. The tapers are very steep and getting the
>>tracks to actually take hold is proving difficult. In
>>order to counter this, I've put the eccentric in the
>>freezer on its coldest setting, and will boil the bearing
>>tracks before trying to put them on.
>>
>>Asides this, do you have any recommendations? How did you
>>do this bit?
>>
>>Andy Chequer

I just reread this, now that I have more time.

I originally thought you were asking about the races (your
"cups), but I see you got those installed.

If you haven't figured it out yet, go here <http://www.gtbicycles.com/sa/uploads/manuals/4.50.i-
DRIVE_raceedition_partslist.pdf> Which number part are you
talking about?

--
Slacker

 

[Slacker]

Sorry bro, I meant to link to here
<http://www.gtbicycles.com/sa/uploads/manuals/59.28.dhi_partslist.pdf>

Although it's the DHi, I think it's more representative of
the of the parts your looking at.

> --
> Slacker

 

[Andy Chequer]

"Slacker" <[email protected]> wrote in message
news:[email protected]...
> Sorry bro, I meant to link to here <http://www.gtbicycles-
> .com/sa/uploads/manuals/59.28.dhi_partslist.pdf>
>
> Although it's the DHi, I think it's more representative of
> the of the parts your looking at.

Yes, the "cups" (marked 3.1 on the diagram) went into the
frame without problems. I used a stout block of wood and
some careful hammering as the vice doesn't have enough depth
to accomodate the frame, the woodblocks and the cups.

The components marked 3.2 are the ones I'm having problems
with. I have since tried heating the race and cooling the
eccentric but this has not helped (I am using a vice with
woodblocks to try and press them in).

Andy Chequer

 

[Slacker]

Andy Chequer wrote:
> "Slacker" <[email protected]> wrote in message news:2jessnF10df6vU1@uni-
> berlin.de...
>
>>Sorry bro, I meant to link to here <http://www.gtbicycles-
>>.com/sa/uploads/manuals/59.28.dhi_partslist.pdf>
>>
>>Although it's the DHi, I think it's more representative of
>>the of the parts your looking at.
>
>
> Yes, the "cups" (marked 3.1 on the diagram) went into
> the frame without problems. I used a stout block of wood
> and some careful hammering as the vice doesn't have
> enough depth to accomodate the frame, the woodblocks and
> the cups.
>
> The components marked 3.2 are the ones I'm having problems
> with. I have since tried heating the race and cooling the
> eccentric but this has not helped (I am using a vice with
> woodblocks to try and press them in).
>
> Andy Chequer
>
>
Something is not right here. That part should just fall
into place by hand, then pressed into it's final resting
place when you screw the eccentric (components 3 & 4)
back together.

Is the Inner Race (3.2) off the orig. assembly or did it
come with the bearings that you ordered? Is it concentric?

I don't know... mine slipped right into place very easy. I
don't think there are different cups for different years??

??? Sorry, wish I could be of more help.

Maybe a phone call to BETD might be of some assistance?

--
Slacker