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Using a centerlock hub for a rim brake build?

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Using a centerlock hub for a rim brake build?

Old 02-13-14, 07:16 PM
  #1  
zacster
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Using a centerlock hub for a rim brake build?

Any reason to not use a centerlock hub for a rim brake build? There aren't any XT quality rim brake hubs anymore, they are all disc specific. But with a centerlock at least it isn't obvious that it is a disc hub. I went 10 speed, despite my reservations, and I was thinking I'd replace the LX 7 speed hub rather than replacing the freehub body. I just rebuilt the wheel on the old hub, and I'm willing to redo it. It has about 20 miles on it at this point.

And I'm not committed to the centerlock idea, I was just seeing that all the newer XT hubs are disc. I'm not averse to buying a good used older model, just something else to consider.
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Old 02-13-14, 08:49 PM
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I can't see any issue with using any disc brake hub for a bike without disc brakes. Just be sure to use a rim brake compatible rim.

By the same token, the reverse is true, and it's fine to use a rim brake rim on a disc brake bike.

There's never any penalty to unused features, after all how many frames are out there with both disc and canti brake mounts. Of corse there's a slight weight penalty, cosmetics and having to respond to everybody who says "why do you have a disc brake hub?"
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Old 02-14-14, 10:14 AM
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Originally Posted by zacster View Post
There aren't any XT quality rim brake hubs anymore, they are all disc specific.
You weren't looking hard enough.

XT non disc hubs are classified as Trekking hubs (FH-T___ & HB-T___)
XT disc hubs are classified as MTB hubs (FH-M___ & HB-M___).

Shimano Product Specifications: https://productinfo.shimano.com/specifications.html

Front: https://productinfo.shimano.com/spec-...EKKING/HB-T780
Rear: https://productinfo.shimano.com/spec-...EKKING/FH-T780

Front: https://www.starbike.com/en/shimano-deore-xt-hb-t780/
Rear: https://www.starbike.com/en/shimano-deore-xt-fh-t780/

You'll find other shops selling them too, just do a couple of google searches for Shimano FH-T780 & Shimano HB-T780

Last edited by cobba; 02-14-14 at 10:35 AM.
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Old 02-14-14, 12:19 PM
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Thanks, I wasn't looking there. The only ones available from the retailers I looked at were disc types, also on eBay. The price on Starbike is reasonable too, except for the shipping.

Shimano's product numbering scheme is sometimes a bit opaque. Even when I looked at Shimano's website I didn't see rim brake XT hubs. I'm never sure which model is current either, not that it really matters, the bike is from 1990. Anything newer than that is new to me. The higher the number the better, at least within the individual product lines.
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Old 02-14-14, 12:55 PM
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there's even a cover made to go over the splines on the hub


Cap for SON delux
https://www.nabendynamo.de/produkte/sondelux_en.html
pricelist it's $10

NB a Disc front wheel is dished a bit ..
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Old 02-14-14, 11:26 PM
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Originally Posted by zacster View Post
The price on Starbike is reasonable too, except for the shipping.
Only problem with the German shops is they charge $30 to $40 for shipping, with their cheap prices you'll pay about the same as other places for certain orders, if you buy a lot of things you'll probably save some money.

Starbike: $56 for F&R 32H hubs or $66 for F&R 36H hubs + $40 shipping
CRC: $90 for F&R 32H or 36H hubs + $10 shipping (buy something else, spend over $99 and get free shipping)
Harris Cyclery: $115 for F&R 36H Hubs + $8 Shipping
Niagara Cycle: $100.59 for F&R 36H Hubs with free shipping (free shipping over $100)
Amazon: $90 to $100 for F&R 32H or 36H hubs with free shipping

Last edited by cobba; 02-15-14 at 01:00 AM.
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Old 02-15-14, 06:29 AM
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Yea, I went back to the site and checked again, and the price was actually a Euro price even after I first put it to USD. I thought it was the dollar price less the vat. In any case I found what I wanted for $60 shipped at Amazon. I just need the rear.

However, last night I took my old 7 speed LX hub apart, including taking the freehub off, and cleaned and relubed it. The bearings, cups and cones were all still good and it feels smooth now. A new 8/9/10 freehub is only about $20 so I might just go that route instead. What I didn't know was that the drive side cup actually is part of the freehub, not the hub shell. I'll have to check around to see if this is standard or maybe only applies to my particular model before I go and buy a new freehub. Let's see what Sheldon says.
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Old 02-15-14, 09:01 AM
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Originally Posted by zacster View Post
However, last night I took my old 7 speed LX hub apart, including taking the freehub off, and cleaned and relubed it. The bearings, cups and cones were all still good and it feels smooth now. A new 8/9/10 freehub is only about $20 so I might just go that route instead. What I didn't know was that the drive side cup actually is part of the freehub, not the hub shell. I'll have to check around to see if this is standard or maybe only applies to my particular model before I go and buy a new freehub. Let's see what Sheldon says.
Yes, the driveside cup and bearings are part of the freehub body on all current Shimano hubs which is a good thing since it puts the drive side bearing as far outboard as possible. If you buy a new 8/9/10-speed freehub body be sure the cones and seals you have match it or plan on buying the proper ones. Shimano freehub bodies take a variety of seals and cones. You will have to remove a non-drive side spacer to maintain the same OLD and need to recenter the axle.
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