Have any of you guys done that?
Espen
Espen
Steererchange on the G-R 888 crowns?
- Thread starter Espen
- Start date
All I know is G-R uses stock Marz steerers
not sure how easy it is to change it tho?
not sure how easy it is to change it tho?
I don't know how comfortable I'd be with pressing in a new steerer.
I bet it takes some tooling to keep things lined up right and a strange brew of loctite. I've never pressed any steerer before though, so I could be wrong.
It should'nt be too hard. Not much different than pressing any else. You just need some shims and a means to press it. Locktite can be bought at Mcmaster.com in various qualities. I'm sure you know to measure the bore size to make sure its going to "press fit" and you should be good to go. Dont let people scare you out of it, it really is as simple as it sounds. I would be more weary of pressing a steerer in single crown fork. The tighter fit would make that more complicated.
I wouldn't go as far as to think that one could guess at the bore size to ensure it was a proper press fit without knowing what the design spec is. I've seen lots of press fits come loose on tools and such. Also locktite is available in dozens of different compositions, some may cause creaking others may not be strong enough. I'd say the actual act of pressing the steerer tube into the crown is relatively simple for somebody who really knows what they're doing and has the right tools, but the rest is a little complicated.
My biggest fear in pressing in a new steerer would be the metal of the crown has already been deformed from the original steerer being presses in. I had a WB crown where the steerer started to slip down. They said send in immediately and DO NOT TRY TO PRESS IT BACK IN. This was before the were sold to EKO, I asked if they would repair it and they said no they scrap them.
I checked with our manufacturer and they believe it is possible, but could not guarantee it will work. The steer tubes are actually cryo fit, much like Marzocchi does, so the press is extremely tight.
If you are considering installing a new steer tube we recommend sending the crown to Go-ride and having our mfg do it. The cost is $40 for the steer tube and installation.
If you are considering installing a new steer tube we recommend sending the crown to Go-ride and having our mfg do it. The cost is $40 for the steer tube and installation.
i've had a Z1 steerer swapped at a MC shop for $5, i cut the old one too short, and i had another fork laying around.... been solid for over 2 years of abuse....
I guess I made a lot of assumptions when I replied this morning. But still I think your over complicating it. There are a few tools you would need to really do it right. For measuring, at the least you would need a caliper it would be better to have a 1-2" micrometer and a telescoping T gauge both of those are common machinist tools. For the act of pressing it you would probably have to make some simple aluminum cylinder to sit the crown on while your pressing it. The tolerance your looking for would be somewhere around .002-.005". .005 would be a really tight fit and without varying temperatures would likely shear the part rather than press it, but this is easily overcome by just putting the steer tube in the ice chest and getting the blow drier out on the crown. As for locktite. Since your dealing with a dual crown fork the loads are distributed between two crowns so really you just need it strong enough so that it doesnt pull out when your tightening up your headset. Locktite is expensive and it may not be necessary if you have good press fit. Heres a link if you want to check it out.Kornphlake said:
http://www.mcmaster.com/
go to catalog pg 3173 bore sealant is on the upper right side.
Now if you dont have the means to do it your self Do what Hucker said, take it to a moto shop or call around machinist and they can probably do it for a reasonable price.