Retrobike Forum Index

It is currently Wed Jul 18, 2018 8:03 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 8 posts ] 
Author Message
PostPosted: Wed Dec 13, 2017 11:54 pm 
Old School Hero
User avatar

Joined: Mon Apr 25, 2016 10:16 pm
Posts: 171
I've been looking at buying some wheels on ebay, and now I see there are loads of different rear axle and hub widths - 135 / 142 / 152 etc. and the point being that the thicker axle helps with rear end stiffness, and the wider hub means the spokes can be spaced further out, creating a stiffer wheel.

So then I came across a 150mm Hope Pro II hub, with a huge gap between the spoke flange and disc mount; now, I'm no expert, but if you're making a hub 150mm wide to be able to space the spokes wider, surely this gap just defeats the point?

Image


Top
 Profile  
 
 Post subject: Re:
PostPosted: Thu Dec 14, 2017 7:18 am 
Retro Guru

Joined: Sun Oct 26, 2014 8:34 am
Posts: 557
Yeah totally agree. I bought one of these hubs without seeing it first and was unimpressed by the gap as well.
That being said the wheel I had built with mavic 521 rims is holding up to my massive clydeness!
Kes

P.s. I also noticed that the hub put the 11t sprocket closer to the dropout than any other hub I've seen but no problems so far


Top
 Profile  
 
 Post subject: Re:
PostPosted: Thu Dec 14, 2017 8:13 am 
Retro Guru

Joined: Wed Apr 24, 2013 10:17 pm
Posts: 688
Location: worcester
Hi,
I’m guessing that it may be intentional on Hope’s part you would still get the benefit of a stiffer rear as it’s widening the rear triangle. I’m guessing that widening the spoke angle made the wheel too stiff and removed the compliant flex that would help with traction when the bike is leant over through fast bumpy turns. I may be wrong on this but too much stiffness can be worse than flex when it comes to traction.

Kyle


Top
 Profile  
 
PostPosted: Thu Dec 14, 2017 8:55 am 
Retro Guru

Joined: Mon Feb 11, 2008 9:42 am
Posts: 2943
Or alternatively, that's the spacing they need for a zero dish wheel? Or to use equal length spokes on both sides?

Just checked, yes it is. 26.5mm offset on both sides. Right hand flange is controlled by freehub length. Left hand side is just made the same. Moving left hand flange over any further makes the wheel weaker......


Top
 Profile  
 
PostPosted: Thu Dec 14, 2017 9:45 pm 
Old School Hero
User avatar

Joined: Mon Apr 25, 2016 10:16 pm
Posts: 171
I see.


Top
 Profile  
 
 Post subject: Re:
PostPosted: Thu Dec 14, 2017 9:55 pm 
Retro Guru

Joined: Sun Oct 26, 2014 8:34 am
Posts: 557
My Chris King 150mm hub is totally different with the flanges much further apart. Is this then weaker?
Kes


Top
 Profile  
 
PostPosted: Thu Dec 14, 2017 10:17 pm 
Old School Hero
User avatar

Joined: Mon Apr 25, 2016 10:16 pm
Posts: 171
Well I put some thought into this earlier, looking at diagrams of hub spacing, and I came to these conclusions...

    • Yes, zero dish (equal spacing) will produce a wheel with equal loads on each side.
    • But I suppose if you had a hub 300mm wide - but slightly uneven spacing - it would still be stronger than an 'even 150mm'. But within the confines, I presume the tests showed '53mm even' was better than say, '60mm uneven'.


Top
 Profile  
 
PostPosted: Fri Dec 15, 2017 8:45 pm 
Retro Guru

Joined: Mon Feb 11, 2008 9:42 am
Posts: 2943
Pretty much the conclusion i came to.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 10 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group