weird hub spacing question...cx related

And a 135mm axle if you're going that route.

John

On Fri, Sep 21, 2012 at 8:05 AM, john wrote:

> two 2.5 mm washers.
>
> On Fri, Sep 21, 2012 at 7:35 AM, Shane Gibson wrote:
>
>>
>> Stewart,
>>
>> Road frames are 130mm rear hub spacing. Hence, CX bikes adopted that
>> geometry since most CX frames came from a "modified road" background.
>> Mountain bikes (used to almost always be) 135mm spacing. There are MTBs
>> now using 142mm rear hub spacing.
>>
>> Hence, (yeah, hence!) you'll find that most disc hubs are from the
>> mountain bike world of 135mm spacing. However, there are manufacturers
>> making hubs with 130mm disc options. Just google "130mm disc hub" (
>> http://goo.gl/Kiirm).
>>
>> I believe that most of the newer CX frames that are being built with disc
>> tabs are now using 135mm rear hub spacing. But, I'm sure there are frames
>> out that are using 130mm hub spacing.
>>
>> As far as using a 130mm hub in a frame designed for 135mm - I don't know
>> what the repercussions of that would be. I'm guessing it wouldn't be
>> catastrophic, but buyer beware. You'll likely have issues with your skewer
>> trying to open up on you, and you'll need a "good strong" skewer since the
>> skewer is going to try and "compress" the frame inwards. A lightweight
>> racing style skewer likely will give you issues. I have a steel frame bike
>> that the rear spacing has "spread" on, and I have this issue with the
>> skewer - I basically use a skewer made for trainer, and have to crank it
>> down hard. I've had lightweight skewers open up on me during races and the
>> rear wheel drop out of the tabs.
>>
>> Hubs aren't too expensive, and if you're willing to relace the wheel, you
>> should be able to put a 135mm hub (disc or non-disc; your choice) in their
>> for relatively little expense.
>>
>> ~~shane
>>
>>
>>
>> --
>> "Opportunities multiply as they are seized." - Sun Tzu
>>
>>
>>
>> On Thu, Sep 20, 2012 at 9:36 PM, Stewart Campbell <
>> stewartcycling@yahoo.com> wrote:
>>
>>> Ok, so I have a alumnium frame with 135mm spacing for a 700c rim. I've
>>> seen mixed reviews on putting a 130mm hub onto that frame. The reviews I
>>> get is that it's not ideal but it does work. I don't know if it matters
>>> but I only weigh 135lbs and this is an older Cannondale cx frame.
>>> Another part to my question is with the new disc brakes on cx
>>> bikes...Arn't most cx frames 130mm spacing but arn't most disc hubs 135mm?
>>> So if you want to run dics brakes on a cx bike you need a cx frame with
>>> 135mm spacing?
>>> Please help my confusion...atleast my confusion about hub spacing. I'm
>>> confused about a lot, but others are helping me with that. ha ha
>>> _______________________________________________
>>> OBRA mailing list
>>> obra@list.obra.org
>>> http://list.obra.org/mailman/listinfo/obra
>>> Unsubscribe: obra-unsubscribe@list.obra.org
>>>
>>
>>
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>>
>
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> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
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>
>


two 2.5 mm washers.

On Fri, Sep 21, 2012 at 7:35 AM, Shane Gibson wrote:

>
> Stewart,
>
> Road frames are 130mm rear hub spacing. Hence, CX bikes adopted that
> geometry since most CX frames came from a "modified road" background.
> Mountain bikes (used to almost always be) 135mm spacing. There are MTBs
> now using 142mm rear hub spacing.
>
> Hence, (yeah, hence!) you'll find that most disc hubs are from the
> mountain bike world of 135mm spacing. However, there are manufacturers
> making hubs with 130mm disc options. Just google "130mm disc hub" (
> http://goo.gl/Kiirm).
>
> I believe that most of the newer CX frames that are being built with disc
> tabs are now using 135mm rear hub spacing. But, I'm sure there are frames
> out that are using 130mm hub spacing.
>
> As far as using a 130mm hub in a frame designed for 135mm - I don't know
> what the repercussions of that would be. I'm guessing it wouldn't be
> catastrophic, but buyer beware. You'll likely have issues with your skewer
> trying to open up on you, and you'll need a "good strong" skewer since the
> skewer is going to try and "compress" the frame inwards. A lightweight
> racing style skewer likely will give you issues. I have a steel frame bike
> that the rear spacing has "spread" on, and I have this issue with the
> skewer - I basically use a skewer made for trainer, and have to crank it
> down hard. I've had lightweight skewers open up on me during races and the
> rear wheel drop out of the tabs.
>
> Hubs aren't too expensive, and if you're willing to relace the wheel, you
> should be able to put a 135mm hub (disc or non-disc; your choice) in their
> for relatively little expense.
>
> ~~shane
>
>
>
> --
> "Opportunities multiply as they are seized." - Sun Tzu
>
>
>
> On Thu, Sep 20, 2012 at 9:36 PM, Stewart Campbell <
> stewartcycling@yahoo.com> wrote:
>
>> Ok, so I have a alumnium frame with 135mm spacing for a 700c rim. I've
>> seen mixed reviews on putting a 130mm hub onto that frame. The reviews I
>> get is that it's not ideal but it does work. I don't know if it matters
>> but I only weigh 135lbs and this is an older Cannondale cx frame.
>> Another part to my question is with the new disc brakes on cx
>> bikes...Arn't most cx frames 130mm spacing but arn't most disc hubs 135mm?
>> So if you want to run dics brakes on a cx bike you need a cx frame with
>> 135mm spacing?
>> Please help my confusion...atleast my confusion about hub spacing. I'm
>> confused about a lot, but others are helping me with that. ha ha
>> _______________________________________________
>> OBRA mailing list
>> obra@list.obra.org
>> http://list.obra.org/mailman/listinfo/obra
>> Unsubscribe: obra-unsubscribe@list.obra.org
>>
>
>
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>
>


Shane Gibson

2012-09-21

Stewart,

Road frames are 130mm rear hub spacing. Hence, CX bikes adopted that
geometry since most CX frames came from a "modified road" background.
Mountain bikes (used to almost always be) 135mm spacing. There are MTBs
now using 142mm rear hub spacing.

Hence, (yeah, hence!) you'll find that most disc hubs are from the mountain
bike world of 135mm spacing. However, there are manufacturers making hubs
with 130mm disc options. Just google "130mm disc hub" (http://goo.gl/Kiirm
).

I believe that most of the newer CX frames that are being built with disc
tabs are now using 135mm rear hub spacing. But, I'm sure there are frames
out that are using 130mm hub spacing.

As far as using a 130mm hub in a frame designed for 135mm - I don't know
what the repercussions of that would be. I'm guessing it wouldn't be
catastrophic, but buyer beware. You'll likely have issues with your skewer
trying to open up on you, and you'll need a "good strong" skewer since the
skewer is going to try and "compress" the frame inwards. A lightweight
racing style skewer likely will give you issues. I have a steel frame bike
that the rear spacing has "spread" on, and I have this issue with the
skewer - I basically use a skewer made for trainer, and have to crank it
down hard. I've had lightweight skewers open up on me during races and the
rear wheel drop out of the tabs.

Hubs aren't too expensive, and if you're willing to relace the wheel, you
should be able to put a 135mm hub (disc or non-disc; your choice) in their
for relatively little expense.

~~shane

--
"Opportunities multiply as they are seized." - Sun Tzu

On Thu, Sep 20, 2012 at 9:36 PM, Stewart Campbell
wrote:

> Ok, so I have a alumnium frame with 135mm spacing for a 700c rim. I've
> seen mixed reviews on putting a 130mm hub onto that frame. The reviews I
> get is that it's not ideal but it does work. I don't know if it matters
> but I only weigh 135lbs and this is an older Cannondale cx frame.
> Another part to my question is with the new disc brakes on cx
> bikes...Arn't most cx frames 130mm spacing but arn't most disc hubs 135mm?
> So if you want to run dics brakes on a cx bike you need a cx frame with
> 135mm spacing?
> Please help my confusion...atleast my confusion about hub spacing. I'm
> confused about a lot, but others are helping me with that. ha ha
> _______________________________________________
> OBRA mailing list
> obra@list.obra.org
> http://list.obra.org/mailman/listinfo/obra
> Unsubscribe: obra-unsubscribe@list.obra.org
>


Stewart Campbell

2012-09-21

Ok, so I have a alumnium frame with 135mm spacing for a 700c rim. I've seen mixed reviews on putting a 130mm hub onto that frame. The reviews I get is that it's not ideal but it does work. I don't know if it matters but I only weigh 135lbs and this is an older Cannondale cx frame.
Another part to my question is with the new disc brakes on cx bikes...Arn't most cx frames 130mm spacing but arn't most disc hubs 135mm? So if you want to run dics brakes on a cx bike you need a cx frame with 135mm spacing?
Please help my confusion...atleast my confusion about hub spacing. I'm confused about a lot, but others are helping me with that. ha ha