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Converting my GT Mohawk hubs to sealed cartridge bearings
#1 2014-07-25 5:07pm
- El Gecko
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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).
Last edited by El Gecko (2014-07-26 7:45am)
Relax.
Balance.
Focus.
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#2 2014-07-25 5:28pm
- FRESSTYLE FREEK
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings
humm heck of a IDA.
Kindness is like Manure does You No Good unless You spread It around
bikes were made to be pedalled if we don't ride them they get sad:(!
YES I RIDE A PINK BIKE!! WANT TO MAKE SOME THING OUT OF IT!
2017 heavyweight build off entry submission thread link
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#3 2014-07-25 6:19pm
- NOPOSERS
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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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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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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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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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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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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.
Relax.
Balance.
Focus.
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#9 2014-07-28 5:53pm
- NOPOSERS
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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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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.
Relax.
Balance.
Focus.
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#11 2014-08-17 3:51pm
- funpig
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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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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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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.
Relax.
Balance.
Focus.
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#14 2014-08-17 6:10pm
- tnyvillegas
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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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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.
Up grading to this, smooth like butter goodness.
Pics tell the story.
6000-2rs
finished product..........................SWEET
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)
we are the funpigs and we have fun!!!!!!
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#16 2014-12-22 6:41am
- El Gecko
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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
Relax.
Balance.
Focus.
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#17 2014-12-22 8:34am
- Coco
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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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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 Still haven't laced mine up yet.
Relax.
Balance.
Focus.
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#19 2014-12-22 4:06pm
- funpig
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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
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)
we are the funpigs and we have fun!!!!!!
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#20 2014-12-23 9:04am
- GTDynoStir
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings
Good info in here.
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#21 2015-01-03 11:01am
- funpig
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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
Used a large washer and some axle pegs to press the bearing into the hub.
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.
Finished project.
Last edited by funpig (2015-01-03 11:17am)
we are the funpigs and we have fun!!!!!!
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#22 2015-01-03 12:31pm
- 88GTP
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings
Nice job! Looks good
" He's such a nice boy "
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#23 2015-01-03 1:01pm
- Crisp87
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings
Great work
WTB: profile seat post and gyrolite hubs
Wtb national pro straight seat post
WTB: pro neck inverted stem
I have a US shipping address
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#24 2015-01-03 7:10pm
- wokii
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Re: Converting my GT Mohawk hubs to sealed cartridge bearings
MARKED!! very interesting...
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