Rear Wheel Repair
02-06-20, 05:35 PM
#1
Full Member
Thread Starter
Rear Wheel Repair
I just acquired a 2015 Giant Revolt 1. FYI I’m not a flipper looking for free advice. I’ve been looking for a used XL frame gravel bike in my price range, one I can wrench on a little and I’m pretty excited to get this one.
In my haste to make the good deal I neglected to notice a couple of replacement spokes on the rear. Upon further inspection there are hairline cracks at a few of the spoke holes. The rims are Giant DX-2, the ones that come stock on the bike. This may provide me the opportunity to learn about wheel building. I have a new DT Swiss 533d 29 rim, in fact I have two so I could rebuild both wheels.
Have I got the right replacement rims? Where can I find some good info on wheel building? Should I just buy a complete replacement wheel in stead? I guess I need a spoke length calculator and maybe some help.
Thanks.
In my haste to make the good deal I neglected to notice a couple of replacement spokes on the rear. Upon further inspection there are hairline cracks at a few of the spoke holes. The rims are Giant DX-2, the ones that come stock on the bike. This may provide me the opportunity to learn about wheel building. I have a new DT Swiss 533d 29 rim, in fact I have two so I could rebuild both wheels.
Have I got the right replacement rims? Where can I find some good info on wheel building? Should I just buy a complete replacement wheel in stead? I guess I need a spoke length calculator and maybe some help.
Thanks.
Last edited by Sjtaylor; 02-06-20 at 05:43 PM.
02-06-20, 05:48 PM
#2
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There are spoke calculators online. Usually an excel spreadsheet that you download.
I think I've used this one on Sheldon Brown's page a few times.
https://www.sheldonbrown.com/rinard/spocalc.htm
As far as your old vs replacement rims.
29 = 700c = 622 bsd
Make sure the spoke count is the same, and the width is something that you can handle.
You'll need to figure out how to true the wheel. I've used a homemade truing stand in the past. It can be done on the bike. Or, pick up a truing stand.
As far as cost, you can buy wheels just as cheap as you can make them, but I'm not sure the quality is the same, but they will at least be DIFFERENT.
Make sure your hubs are smooth before starting.
I think I've used this one on Sheldon Brown's page a few times.
https://www.sheldonbrown.com/rinard/spocalc.htm
As far as your old vs replacement rims.
29 = 700c = 622 bsd
Make sure the spoke count is the same, and the width is something that you can handle.
You'll need to figure out how to true the wheel. I've used a homemade truing stand in the past. It can be done on the bike. Or, pick up a truing stand.
As far as cost, you can buy wheels just as cheap as you can make them, but I'm not sure the quality is the same, but they will at least be DIFFERENT.
Make sure your hubs are smooth before starting.
02-06-20, 05:58 PM
#3
Really Old Senior Member
Since you have disc brakes, most any rim of the proper diameter & appropriate (for tire) width should work.
Probably easiest to use new spokes & nipples.
1. The old spokes may not be the correct length. They have some unknown degree of fatigue.
2. New makes the build much easier, since you aren't fighting corroded threads. Priceless if you are inexperienced in wheel building.
Probably easiest to use new spokes & nipples.
1. The old spokes may not be the correct length. They have some unknown degree of fatigue.
2. New makes the build much easier, since you aren't fighting corroded threads. Priceless if you are inexperienced in wheel building.
02-06-20, 06:24 PM
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Effective Rim Diameter for the DT Swiss 533d 700c is:
599mm when aiming for the bottom of the screwdriver flat of a 12mm standard profile nipple.
Pretty good rim for the price.
=8-)
599mm when aiming for the bottom of the screwdriver flat of a 12mm standard profile nipple.
Pretty good rim for the price.
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
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5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
02-06-20, 06:29 PM
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If it has had a couple of broken spokes, it is probably time to just replace all the spokes if you are already doing the work.
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02-06-20, 08:01 PM
#6
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Thread Starter
Thanks for the responses. My lbs owner/ friend has offered to lace a wheel with me and leave me to lace the other. I have a trueing stand at home so I should be set. I just found a Craigslist add for a set of replacement wheels for $95. If they fit a ten speed cassette and the rear is 135mm they should fit. I replied.
Thought I’d be riding my new/used gravel bike by now. I’ll just be looking at it for a few days.
thanks again.
Thought I’d be riding my new/used gravel bike by now. I’ll just be looking at it for a few days.
thanks again.
02-07-20, 03:09 PM
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As mentioned above, if there is evidence of a couple of broken spokes, assume all spokes have seen the same cyclic stress that already killed their friends. Also, buying new spokes means you get to choose the length, which means you get to choose a new rim without worrying that it has the same dimensions as the original.
