PDA

View Full Version : Re-spacing to 126mm-unnecessary?


jeduardo
02-06-2016, 02:58 PM
OK, on the fence about purchasing an 80's Klein road bike, because it utilizes a 126mm rear. I have a 130mm 8-10spd Shim 105 27.5 rim brake wheelset which I plan to use rear is 130mm.
I have no true worries about using the 130mm, but if I were to re-space the 130 to 126 would I have an easier time when using a 9s block?
What problems may I run into if I go with the 9s over a 7s or an 8s block?
Thanks for input

bicycletricycle
02-06-2016, 03:01 PM
9 speed freehub body on a 126mm hub yields a lot of dish, perhaps too much

Ken Robb
02-06-2016, 03:17 PM
I have spread steel frames from 126 to 130 and had a couple of steel Rivendells that came 132.5 to make for easy swaps of 130 and 135 wheels but if your Klein is aluminum like all the Kleins I have ever seen I would be afraid to use any other size wheel than what the bike came with.

jeduardo
02-06-2016, 03:35 PM
9 speed freehub body on a 126mm hub yields a lot of dish, perhaps too much

BT, if I were to just use an actual 126mm hub w/9s FH to build a new RW, would I avoid my conversion/re-dish issues?
Am I crazy, or would this entire 9/10s block end up causing serious chain rub (on inner frame stays or final position cog)?
I'm starting to think that this project is a no go

ultraman6970
02-06-2016, 03:54 PM
IMO you cant put a 9 or 10 block in a 126 mm hub, you are out of space for the last 2 cogs plus the lockring.

If the frame is aluminum I would not try to spread it at all. Probably will be ok just sit the 130 wheel in there but spread it? i would not do it, the reason is that to go up to 130 you have to at least spring those stays up to 140 or 150 mm and at that point who knows what will happen even if you tie the stays to prevent cracks.

bicycletricycle
02-06-2016, 05:01 PM
Max freehub length for 126 is seven speed. If you put a 9 speed cassette in a 7 speed body you'll run out of room and have to leave the last cog or 2 off

CiclistiCliff
02-06-2016, 05:12 PM
Take off the spacer in with arrow and build your wheel around the new OLD or redish it.

I've done it plenty and I'm a giant turd of a human at 230 lbs. Haven't had an issue yet.

https://scontent-sjc2-1.xx.fbcdn.net/hphotos-xta1/v/t1.0-9/10940486_846192212208_5293901209319054094_n.jpg?oh =205a570a9d44b3a602119eb982f4dcd2&oe=57236EDF

sg8357
02-06-2016, 06:52 PM
Max freehub length for 126 is seven speed. If you put a 9 speed cassette in a 7 speed body you'll run out of room and have to leave the last cog or 2 off

A Shimano 126 hub will fit 9 cogs of a 10 speed cassette, 10s Shimano
d/t shifters are easy to get. Works great, 11t cogs are spacers for me
anyway. Bought a 11-28 shimano cassette, the 11 & 12 t cogs both
were first position types, no spacers required.

bicycletricycle
02-06-2016, 07:14 PM
A Shimano 126 hub will fit 9 cogs of a 10 speed cassette, 10s Shimano
d/t shifters are easy to get. Works great, 11t cogs are spacers for me
anyway. Bought a 11-28 shimano cassette, the 11 & 12 t cogs both
were first position types, no spacers required.

yes

Cicli
02-06-2016, 07:22 PM
A Shimano 126 hub will fit 9 cogs of a 10 speed cassette, 10s Shimano
d/t shifters are easy to get. Works great, 11t cogs are spacers for me
anyway. Bought a 11-28 shimano cassette, the 11 & 12 t cogs both
were first position types, no spacers required.

Good to know. Thanks.

oliver1850
02-07-2016, 10:22 AM
Have you measured the Klein? Though it came with 6 speed 600, my '87 Cannondale measures 128 mm between the dropouts. I ran it with a 130 mm hub for years with no problems.

rccardr
02-07-2016, 01:49 PM
Good point. I've upgraded several dozen 80's Cannondales to modern 130 wheel sets over the years. Some started out as 126, others as 128. No problems with any of them, and we're talking over literally tens of thousands of miles, with riders of all shapes and sizes. Simply spread the stays with your thumbs and slide in the wheel- no cold setting required or advised.

My current travel bike is an '88 ST Cannondale with a 130 sized 10 speed hub. It goes all over the country with me to numerous events, including week long tours and plenty of centuries. Over 1400 miles on it last year alone, works like a champ.

No personal experience doing that with Kleins, but seems to me they are similar enough to create at least one data point.

jpw
02-07-2016, 02:02 PM
my Raleigh Randonneur has 126 and a seven speed cassette and a triple. it's a great bike, but the 126 has sometimes been a bit of a pita when sourcing new hubs. i'm now stocked up.