help convert my bikes for commuting
#76
Keepin it Wheel




Joined: Aug 2011
Posts: 10,962
Likes: 5,208
From: San Diego
Bikes: Surly CrossCheck, Krampus
I recommend (a) watch a couple utub videos on how to true a wheel and see how easy it is, and (b) ride to a LBS, tell them you want either a Park SW-40 or SW-42, whichever is the size that fits on your spokes. It'll cost probably about ten bucks.
For a 300lb rider on a bike that accepts max 25/28mm tires, that's a context that is very hard on wheels, so a spoke wrench and a little practice is a good investment. Hopefully you've got at least 32 spokes in the back, 36 would be preferable. Front wheels don't bear as much load, and don't need asymmetric dishing for the cassette, so they are usually less problematic (unless you crash into a curb or something)
#77
If you think of the tire as part of the distance around the circle (that distance doesn't vary) and the rim as another part of the circle (gets longer with a wider rim) then the whole circle gets larger.
Of course it's not exactly a circle so it varies from tire to tire how much or even if it gets taller.
Of course it's not exactly a circle so it varies from tire to tire how much or even if it gets taller.
#78
Senior Member
Joined: Apr 2012
Posts: 7,391
Likes: 13
From: Memphis TN area
Bikes: 2011 Felt Z85 (road/commuter), 2006 Marin Pine Mountain (utility/commuter E-bike), 1995 KHS Alite 1000 (gravel grinder)
That is surprising. It would only hold true to a certain point, though. If you tried to put it on a wide 29er rim it would have to be shorter at the center. Just think of a section of folding bead tire when folded flat, it's as short as it can be, and the beads are as far apart as they can be.
#79
Disco Infiltrator




Joined: May 2013
Posts: 15,325
Likes: 3,517
From: Folsom CA
Bikes: Stormchaser, Paramount, Tilt, Samba tandem
Your road bike is going to be harder to make work for your weight than it was on the MTB.
I don't think truing the wheel is going to make the tire fit. I think it's probably just too big for the frame. People around here like their big soft tires and so we sometimes talk about how much clearance is really needed... although opinions differ, "almost none" is not a favorite answer.
You could probably overfill a GP4000sii 25 or some other true-to-size 28 with no trouble. It will just be a tiny bit harsher.
I don't think truing the wheel is going to make the tire fit. I think it's probably just too big for the frame. People around here like their big soft tires and so we sometimes talk about how much clearance is really needed... although opinions differ, "almost none" is not a favorite answer.
You could probably overfill a GP4000sii 25 or some other true-to-size 28 with no trouble. It will just be a tiny bit harsher.
__________________
Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."
Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."
Last edited by Darth Lefty; 05-18-17 at 02:49 PM.
#80
Mostly harmless ™
Joined: Nov 2010
Posts: 4,462
Likes: 243
From: Novi Sad
Bikes: Heavy, with friction shifters
That is surprising. It would only hold true to a certain point, though. If you tried to put it on a wide 29er rim it would have to be shorter at the center. Just think of a section of folding bead tire when folded flat, it's as short as it can be, and the beads are as far apart as they can be.
#81
Three separate 4-sided spoke wrenches for $10. Had this set for about a year, with no issues.
#83
Thread Starter
Senior Member
Joined: Aug 2012
Posts: 121
Likes: 0
update guys: after truing the wheel the best I can it looks like I have about 1mm clearance.
edit: decided to not use it. will be selling the bike since the mtb does pretty much everything I need.
edit: decided to not use it. will be selling the bike since the mtb does pretty much everything I need.
Last edited by EL LUCHADOR; 05-19-17 at 10:42 PM.
#84
Thread Starter
Senior Member
Joined: Aug 2012
Posts: 121
Likes: 0
most gain I got was on one ride on the drops about half the time I gained 1.2 mph over the mtb but normal riding no gain.
this is good news for me because now I know that I can do the hottern hell 100 on my mtb with no real speed penalty. and I'll be way more comfy, stable, ride a bigger tire over the chiopseal etc etc
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