Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

9 speed HG freewheel compatibility???

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

9 speed HG freewheel compatibility???

Old 09-24-21, 03:10 AM
  #1  
thook
(rhymes with spook)
Thread Starter
 
thook's Avatar
 
Join Date: Aug 2009
Location: Winslow, AR
Posts: 2,795

Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 919 Post(s)
Liked 745 Times in 546 Posts
9 speed HG freewheel compatibility???

i'm curious about them. I see some are advertised for e-bikes, but some aren't. i don't know what makes a threaded e-bike hub different from any "normal" threaded freewheel hub (ie. older 27 inch or 700c), but on a brief read it appears there's no difference? is that correct? anyway, wondering of the compatibility. say if i were to use one on a normaly OLD 126mm spaced hub, i'm sure i'd have to respace ...or no? is this doable thing?

example....

https://www.amazon.com/dp/B09B1ZZ2W9...ustomerReviews
thook is offline  
Old 09-24-21, 04:50 AM
  #2  
hokiefyd 
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,124

Bikes: More bikes than riders

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 749 Times in 559 Posts
E-bike motor hubs usually have a very stout axle shaft slotted at the end to side into a typical vertical drop out and, I suppose because of this, they've more or less standardized on using freewheels vs. freehubs. The freewheel threads are standard British/ISO threads. Because of the ruggedness of these hubs, I don't think there's as much of a concern with bending or breaking axles (as there may be with a standard hub with a QR), making freewheels in the 8- and 9- and even 10-speed ranges more relevant for these motor hubs.
hokiefyd is offline  
Old 09-24-21, 04:55 AM
  #3  
hokiefyd 
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,124

Bikes: More bikes than riders

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 749 Times in 559 Posts
As a follow-up to that, this is a bit ironic because tight control over pedaling cadence is at least sometimes (often?) not as important with e-bikes as it is for regular pedal bikes. Many e-bikes work just fine with 1x7 drivetrains. The hubs themselves are generally the same or similar; there's not necessarily a drawback to running a 9-speed freewheel vs. a 7-speed freewheel (other than cost of the parts and chains, etc.), but there's often not a huge advantage either.
hokiefyd is offline  
Old 09-24-21, 09:04 AM
  #4  
JohnDThompson 
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,936

Bikes: Several, mostly not name brands.

Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3571 Post(s)
Liked 3,367 Times in 1,916 Posts
Originally Posted by thook
if i were to use one on a normaly OLD 126mm spaced hub, i'm sure i'd have to respace ...or no? is this doable thing?
Clusters with more than seven sprockets generally require wider hub spacing, 130 or 135mm; otherwise re-spacing and re-dishing the wheel results in absurdly high drive side spoke tension and absurdly low non-drive side spoke tension. That's a recipe for early wheel failure.
JohnDThompson is offline  
Old 09-24-21, 07:20 PM
  #5  
thook
(rhymes with spook)
Thread Starter
 
thook's Avatar
 
Join Date: Aug 2009
Location: Winslow, AR
Posts: 2,795

Bikes: '83 univega gran turismo x2, '85 schwinn super le tour,'89 miyata triple cross, '91 GT tequesta, '90 yokota grizzly peak, '94 GT backwoods, '95'ish scott tampico, '98 bonty privateer, '93 mongoose crossway 625, '98 parkpre ariel, 2k'ish giant fcr3

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 919 Post(s)
Liked 745 Times in 546 Posts
yep yep...points taken. after doing some deeper web digging, it seems that's all about right.

ps. stack exchange ain't the best source, i guess....lol
thook is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.