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Converting my GT Mohawk hubs to sealed cartridge bearings  RSS Feed

#1 2014-07-25 5:07pm

El Gecko
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From: The Great Lakes
Registered: 2012-10-01
Posts: 2906
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Converting my GT Mohawk hubs to sealed cartridge bearings

So I've had these hubs for almost 20 years, and I haven't ridden them in at least 10, and I wanted to get them running again.  They were on my Haro when I got hit by a truck in 2003, and the bearing cups got pretty messed up.  I originally thought they were junk, but I could never bring myself to get rid of them.

I had a kind of crazy idea today, and I think it just might work.  I hammered the old cups out and test fit some old cartridge bearings in there, and lo and behold they fit perfectly!  I need new axles since the old ones are bent, and I need to make a sleeve for the inner race to tighten onto, but the bearings slide in with just the right amount of tightness and sit flush against the edge of the hub shell.  Obviously I'll need new bearings as well since I'm not just gonna throw some old crap bearings in there, and I'm not sure how long it'll be until I get all the parts together.

What do you guys think?  Does this make sense or is it just a waste of time and money?

The front bearings will be type 6000, 10x26x8mm, with a 130x10mm axle.  The hub shell is 78mm wide, so I'll need a 62mm long sleeve to go over the inside of the axle (2x8mm wide=16 and 78-16=62).

The rear bearings will be type 6200 (not 6309s as the pics show), 10x30x9, with a 150x10mm axle.  The hub shell is 90mm wide, so I'll need a 72mm long sleeve to go over the inside of the axle (2x9mm wide=18 and 90-18=72).

https://lh4.googleusercontent.com/-YXw-lq6XPLM/U9LsetKT6EI/AAAAAAAAAcQ/ohfR9KUbID8/s720/IMG_2269.JPG
https://lh3.googleusercontent.com/-VwNq2lmqMkA/U9Lsc88pa6I/AAAAAAAAAcE/jNffyAXz3lY/s720/IMG_2267.JPG
https://lh4.googleusercontent.com/-oKHgGkobPNA/U9LsdOF1D1I/AAAAAAAAAcg/dHGPD77IhGc/s720/IMG_2268.JPG
https://lh6.googleusercontent.com/-4VlHbX1EtNg/U9LshJ37igI/AAAAAAAAAcY/6V-ie9ZiwmE/s720/IMG_2271.JPG

Last edited by El Gecko (2014-07-26 7:45am)


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#2 2014-07-25 5:28pm

FRESSTYLE FREEK
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From: Fountain Valley, CA
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

humm heck of a IDA.


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#3 2014-07-25 6:19pm

NOPOSERS
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From: Bellflower, CA
Registered: 2009-05-12
Posts: 1970
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

I did this  conversion a while back. I used 6200 bearings in the rear and used a primo axle . For the front I used 6000 bearings. I had to try a few different axles for the front to fit right.  I use them on my mongoose fs-1. I still have yet.  To convert suzue loose ball to sealed . I can get those cups out.

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#4 2014-07-25 9:39pm

electrongeek
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From: So Cal
Registered: 2010-10-28
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Interesting. I'll be subscribing.

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#5 2014-07-26 6:52am

NOPOSERS
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From: Bellflower, CA
Registered: 2009-05-12
Posts: 1970
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Tim... I remember I showed it to you one time on a ride

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#6 2014-07-26 7:44am

funpig
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From: Littleton, CO
Registered: 2010-11-01
Posts: 353
Bikes: 4

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Sweet, my home work is done. Thanks for the info. I will be making the change to a set of gt Mohawk hubs I have.


we are the funpigs and we have fun!!!!!!

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#7 2014-07-26 9:10pm

James Vigil
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From: HWD, Ca.
Registered: 2008-11-02
Posts: 2693
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

good stuff


A pile of shit has a thousand eyes.

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#8 2014-07-27 7:42pm

El Gecko
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From: The Great Lakes
Registered: 2012-10-01
Posts: 2906
Bikes: 8

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

NOPOSERS what kind of axles did you use exactly?  You said Primo for the rear but out of what hub?  And do you happen to know the dimensions on the front one?

I think a sleeve over a normal axle will be cheaper but I'm not sure if it'll be strong enough for the long haul, and it would probably help to have an axle that was intended for this purpose.


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#9 2014-07-28 5:53pm

NOPOSERS
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From: Bellflower, CA
Registered: 2009-05-12
Posts: 1970
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

i am not sure what axle it was. It was NOS at a local bike shop. If anything,you MIGHT be able to get away with the Suzue/Peregrine axle kits. They come with the correct bearings too. I never measured the spacing. I took a " shot in the dark"  and it it. It might be an axle for a Primo SOB hub.

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#10 2014-08-17 3:41pm

El Gecko
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From: The Great Lakes
Registered: 2012-10-01
Posts: 2906
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Finally got an update for you guys.  Got the bearings and axles today and put everything together.  Works perfect!  Well, close enough at least.  It took a lot of trial and error to get the inner sleeves the right length, but it turned out pretty well eventually.  10mm axles/locknuts/lugnuts with a bunch of 10mm aluminum spacers of various widths inside the hub to get the right sleeve length.  One 3mm spacer on each side in the front, and one 5mm spacer on each side in the rear to get the right axle spacing.  Front bearings are 6000 and rear are 6200.  Can't wait to lace em up and ride em!

One thing - if you guys are having issues getting things to fit right: make sure the bearings are flush, and most importantly straight in the hub shells.  I took them apart quite a few times and re-measured everything because I thought something wasn't right, but it was just that the bearings were not seated properly.

https://lh4.googleusercontent.com/-uAFhD3rQUWA/U_EtsRfp9tI/AAAAAAAAAc0/HLBb0b8G0is/s720/IMG_2300.JPG


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#11 2014-08-17 3:51pm

funpig
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From: Littleton, CO
Registered: 2010-11-01
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

sweet, thanks for the update


we are the funpigs and we have fun!!!!!!

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#12 2014-08-17 5:26pm

electrongeek
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From: So Cal
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

What axles did you end up using and where did you buy them?

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#13 2014-08-17 6:01pm

El Gecko
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From: The Great Lakes
Registered: 2012-10-01
Posts: 2906
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

They're just standard 10mm diameter cro-moly axles, 175mm long rear and 145mm long hollow front.  The front spacing is kind of tight so I'd suggest going at least 150mm.  I just got them from my local bike shop, around $15 each with the axle nuts and bearing locknuts.


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#14 2014-08-17 6:10pm

tnyvillegas
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From: Rialto, CA
Registered: 2008-10-20
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Nice! Should be a write up

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#15 2014-12-21 5:50pm

funpig
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From: Littleton, CO
Registered: 2010-11-01
Posts: 353
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Front is done. Guess I got lucky and found a nos sealed bearing axle along with all the hard wear at an older bike shop that let me scrounge though a parts bin. Worked out great. Just need to find a rear with a shoulder to shoulder measurement of 74mm. Also my rear is a flip flop so each side will use a different size bearing. That may be lil tricky but a set of sealed powerlite peanut hubs with flip flop has two different size bearing too. I will keep you all posted.

Started with this pile of junk loose ball bearing stuff.


http://i1088.photobucket.com/albums/i331/funpig1969/DSC06521_zps5210f433.jpg

Up grading to this, smooth like butter goodness.


http://i1088.photobucket.com/albums/i331/funpig1969/DSC06522_zpsdd18357f.jpg

Pics tell the story.

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06526_zps483905df.jpg

6000-2rs


http://i1088.photobucket.com/albums/i331/funpig1969/DSC06538_zpse328375b.jpg


http://i1088.photobucket.com/albums/i331/funpig1969/DSC06542_zps2ddc89ff.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06524_zpsc48e6bda.jpg

finished product..........................SWEET

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06550_zps38607d5b.jpg

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06551_zpsd278b635.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06554_zps4b1baa31.jpg

Looking forward to getting the rear done. pics will be posted. Also gonna check into converting a set of radeline hubs.

Last edited by funpig (2014-12-21 5:54pm)


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#16 2014-12-22 6:41am

El Gecko
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From: The Great Lakes
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Nice job, funpig!  I'm sure it was a heck of a lot easier with the right axle lol


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#17 2014-12-22 8:34am

Coco
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From: Regina, Saskatchewan Canada
Registered: 2011-03-03
Posts: 9064

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Looks like one of the bearings on the silver mohawk is sticking out too far.

Last edited by Coco (2014-12-22 8:37am)

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#18 2014-12-22 9:03am

El Gecko
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From: The Great Lakes
Registered: 2012-10-01
Posts: 2906
Bikes: 8

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Coco wrote:

Looks like one of the bearings on the silver mohawk is sticking out too far.

One of the bearings on my front hub does that too, but it's not more than 1mm or so, so I figure it should be ok.

I guess we'll find out when we start riding them around lol  Still haven't laced mine up yet.


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#19 2014-12-22 4:06pm

funpig
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From: Littleton, CO
Registered: 2010-11-01
Posts: 353
Bikes: 4

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

El Gecko wrote:

Nice job, funpig!  I'm sure it was a heck of a lot easier with the right axle lol

Much easier. I have a set of axles that belong to some old skool GT high flange 48's (I am re-finishing theme or I would use them)  the shoulder to shoulder measurement is pretty much spot on and would work, just the area where the bearing set is 9mm OD not 10mm. Looking forward to getting these things laced up and riding. It spins great. With my rear flip flop hub. one side bearing is the 6000-2RS and the other is 6200-2RS (10x30x9) now I just need a axle

Last edited by funpig (2014-12-23 7:28pm)


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#20 2014-12-23 9:04am

GTDynoStir
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From: NYC
Registered: 2013-12-04
Posts: 279

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

cool Good info in here.

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#21 2015-01-03 11:01am

funpig
Pro Member
From: Littleton, CO
Registered: 2010-11-01
Posts: 353
Bikes: 4

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Got the rear done. Found an axle on ebay. It's a lil shorter but will work fine. Was looking for 74mm shoulder to shoulder this one is 71mm but feel confident after putting it all together. Bearing sizes are 6000 2RS and 6200 2RS

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06561_zpsd9e0b932.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06559_zps33b93d73.jpg

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06560_zps32917b3e.jpg

Used a large washer and some axle pegs to press the bearing into the hub.

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06562_zps587a5830.jpg

http://i1088.photobucket.com/albums/i331/funpig1969/DSC06563_zpscee0856e.jpghttp://i1088.photobucket.com/albums/i331/funpig1969/DSC06564_zpseff07970.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06565_zps3be3924b.jpghttp://i1088.photobucket.com/albums/i331/funpig1969/DSC06566_zps5427a3a0.jpghttp://i1088.photobucket.com/albums/i331/funpig1969/DSC06567_zpsa995102d.jpg

on the small side of the flip flop hub the bearing did not press in as flush as the other but spins and feels fine.http://i1088.photobucket.com/albums/i331/funpig1969/DSC06568_zps57a777e9.jpg

Finished project.
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06557_zps67571ae8.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06558_zps8f6a5ecc.jpg
http://i1088.photobucket.com/albums/i331/funpig1969/DSC06556_zpscaf994b6.jpg

Last edited by funpig (2015-01-03 11:17am)


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#22 2015-01-03 12:31pm

88GTP
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From: Thorntown, Indiana
Registered: 2014-10-30
Posts: 660
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Nice job! Looks good


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#23 2015-01-03 1:01pm

Crisp87
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From: New Zealand
Registered: 2011-03-27
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Great work


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#24 2015-01-03 7:10pm

wokii
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From: Queensland, Australia
Registered: 2011-11-28
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings

MARKED!! very interesting...


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#25 2015-01-09 9:18pm

1965kent
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From: Brentwood, CA
Registered: 2014-11-30
Posts: 10

Re: Converting my GT Mohawk hubs to sealed cartridge bearings

Nice, I have 2 sets of these hubs to do.

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