Is the '01 QR20 hub skewer assembly removable so that a 20mm axle can be installed or did that compatibility not arrive until later. 
'01 QR20 Plus hub compatible w/20mm axle?
- Thread starter llkoolkeg
- Start date
I *think* you can. I think I remember a few friends doing it and that it involved making/buying a new bearing spacer or something like that.
I've run regular 20mm hubs on QR20 forks. I can't remember how we got the QR out. It might have been with force. Are you trying to use the marzocchi hub and just find another axle? I don't think this would give you a stiffer setup.
If I'm thinking you're asking the question I'm thinking I'm answering your qr20 axle is the same as a regular 20mm axle exept it has the quick release and skewer running through it rather than bolting on. You can use any 20mm hub with the QR20 system and you can use the marzocchi qr20 hub on any 20mm fork. At least that was how I understood it, the spacing is the same on all forks and hubs and the axle diameter is the same for all forks and hubs reguardless of the QR20, tulio or hex lock marketing jargon associated with it.
The older - I think up to '01 hubs have an axle with raised flanges that sandwich inside the hub behind the bearings. You need to tap out the axle with the bearings to get it out, it doesn't slide through like a standard 20mm axle. These aren't really compatible with thru-axle forks as I understand, the inside diameter of the older bearings doesn't let you use a standard 20mm axle.
The older hubs "sort of" work with the newer forks. The end faces of the dust caps on the older ones are different than the newer ones. I'll try to take pics tonight to show the differences.
The newer QR20 hubs have a thru axle and can be used with bolts or the QR20 skewers.
The older hubs "sort of" work with the newer forks. The end faces of the dust caps on the older ones are different than the newer ones. I'll try to take pics tonight to show the differences.
The newer QR20 hubs have a thru axle and can be used with bolts or the QR20 skewers.
Yes u can, if u run an older Marz QR20 hub, just knock the spacers out..
Cool.
Thanks folks. 
OK, I took the end cap/grease seals off the Marzocchi QR20 hub's axle and now the Monster's 20MM thru axle will fit through the hub bearings but not the grease seal/end caps. Do you have to get different end cap/grease seals(without grippy serrations) to use a QR20 Plus hub with a 20mm thru-axle?
I don't know anything about "D" droputs, but the 20mm axle fits. It's just that these gasket thingies in the hub end caps(which are tightened with tiny set screws) won't go all the way onto the 20mm axle. The o-ring gasket thingy is too tight a fit to slide onto the thru-axle.
Anyone know the answer to this or do I just bug Marzocchi Tech directly? 
do you have a picture? I thought that a 20 mm axle was 20 mm and should slide through the hub reguardless of how the axle attatches to the fork. Just junk the whole idea and get a psylo, they're superior forks anyways. :devil:
Did you ever find out how to fix this issue??