40 votes

What is a taco?

To taco a wheel means you've bent it so badly its a write-off and cannot be salvaged through truing. This is significantly worse than going out of true, because the rim will be creased or torn, ...
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  • 96.8k
26 votes
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What are the risks associated with truing wheels without the aid of a truing stand?

A truing stand is a tool to speed-up the process. Using one does not stop the operator from doing it wrong. A good technique can work well enough using a finger pressing lightly on the rim and ...
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  • 96.8k
17 votes
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When is a bike rim beyond repair?

Imagine a theoretical new bare rim made to perfect tolerances with perfect uniformity of materials and construction. Without spokes, it is perfectly round and flat. Add spokes and tension them all the ...
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16 votes

When is a bike rim beyond repair?

One general consensus is that if your wheel has suffered damage enough to break three spokes in the same event then the rim may have suffered enough damaged to write it off. You should clean the rim, ...
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  • 96.8k
14 votes
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Should an amateur attempt truing a wheel

If your question is, "Can an amateur successfully true a wheel on their first try?", the answer is "Yes". A quick search on the internet reveals plenty of videos explaining the process. Some things ...
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  • 258
11 votes

Pinging sound on new radial front wheel

I think you have found the answer to your question, about the cause and meaning of the pinging. I would suggest however that to assert the wheel invariable needs re-truing (at that answer does) is ...
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  • 3,829
10 votes

Is this tire properly fitted on the rim?

It looks to me that your tire is not properly centered on the rim. Probably neither the rim nor the tire are faulty, but they require more effort to center the tire. The first thing you should check ...
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10 votes

Problems with spoke threads, and stressing the wheel

There is one major cause of this problem and it is putting a 1.8mm aka 15ga spoke in a 2.0mm/14ga nipple. This mismatch will screw together and hold under some tension, but then slip. It is easy to ...
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9 votes
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Is this tire properly fitted on the rim?

I'll answer all your questions in order. 1) "Will this tire wobble wear down the bearings faster, or other components?" -Nope, this wobble will do pretty much nothing to the rim. If anything, you ...
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  • 993
9 votes
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How dangerous is a very out-of-true disc brake wheel?

Another danger of riding an out-of-true wheel is cornering. When on the straight, the wheel may be "round" while wobbling from side to side. But when leaning into a corner, the bike is no longer ...
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  • 96.8k
8 votes
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How to remove spoke twist

There are two things I generally do to help eliminate most of the twist. When tightening spokes, get in the habit of slightly overturning and then turning back. (i.e. If I want to tighten a spoke 1/...
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8 votes

New Park Tool truing stand doesn't seem to be calibrated, calibration seems off out of box

The 2.2 is not for directly measuring dish, a shop will use a proper dish measuring tool(for time and repeatability) and there are techniques for the home gamer that lacks a dish tool that involve ...
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  • 456
8 votes
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Danger of adjusting spokes on the road

Unfortunately there's not many aspects to truing wheels this question doesn't touch. Also unfortunately, figuring out what's going on with a given heavily used wheel with issues and then making it as ...
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8 votes
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Freeing stiff nipples?

I agree with Daniel’s comment, I’ve had success with using vice grips to hold spokes myself. Be careful not to use excessive force to prevent crushing the spoke. It may help to add a small “flag” made ...
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  • 10.5k
8 votes

Is it safe to ride on wheels with rusted spoke eyelets?

Yes, the rust is not a safety issue. It's fine. They're not replaceable in any kind of practical sense. Double eyelets or sockets such as those pictured are formed to match a specific distance between ...
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7 votes

Wheel gets stuck

Check to see where it's rubbing. It will probably be rubbing on the brake pads, or less likely on the chain stays. If it happens once per rotation it means your wheel is probably warped and needs to ...
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  • 21.2k
7 votes
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What does a "dished" wheel mean? How to tighten spokes on such a wheel, without a spoke tension meter?

If the wheel is symmetrical the spokes should all have the same tension. If dished (what you've called "skew" the bicycle world calls dished), the side closer to the centre of the hub will have more ...
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  • 1,173
7 votes
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What could cause an inflated tire to be "untrue" on a true rim

Three posibilities: The tire is defective (least likely). The tire is simply not settling onto the rim properly. You managed to twist/pinch the tube while installing. If you twisted/pinched the tube ...
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7 votes
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How do I true a trailer wheel?

I would skip using the truing stand and just true the wheel on the trailer. You can generally clamp a strip of something to the frame to act as an indicator (have it stick out and just brush the rim, ...
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6 votes
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How tell if spokes too tight without tensionometer

Roger Musson's book "Professional Guide to Wheel Building" simply states that: "The best place to start when judging the correct tension is to examine a similar wheel you know to be good and reliable ...
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  • 4,102
6 votes

Danger of adjusting spokes on the road

For a normal wheel with 32 or more spokes and a metal rim, I'd say you are pretty safe. Even if one or two spokes ended up breaking, there is enough redundancy to avoid catastrophic failure. Myself I'...
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  • 1,315
6 votes
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Correct spoke tension for DT Swiss EX 471 26" 32h rim paired with Wheelsmith DB 14 spokes

I believe DT has a blanket recommendation of 1200Nm for all their rims, or 122 kg-f. You could email them to corroborate but that number should be safe. Use the tensiometer chart for the thin section ...
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6 votes

Does bicycle rim wear affect wheel truing?

Wear will only vary around the circumference in rather odd cases, e.g. a significantly out of true wheel with brakes that don't self centre, damage, or local contamination reducing friction. The two ...
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  • 45.4k
5 votes
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What tolerances should I use for spoke tension when building a wheel

This blog post (google cache, original gone) on the Park site suggests a range of 20%, this thread has people saying a range of 1 on the TM-1 is fine (edited in some quotes): I sort of try to finish ...
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  • 1,173
5 votes
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What does the truing "release tension" step do?

This subject can be confusing to learn about because people use terminology to mean different things, and some of the physical techniques involved are working to help achieve a couple different goals ...
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5 votes

Back wheel is "wobbling"

There are a few things that could be described as a 'wobbly' wheel. Hold the rear wheel off the ground, grab the tire at the 12 o'clock and 9 o'clock (from the chain side of the bike), try to move ...
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5 votes

When is a bike rim beyond repair?

First, make sure the rim doesn’t have any obvious damage. Check for cracks, especially along the brake surface, under the rim tape and around the spoke holes. If there is no damage then I’d try to ...
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  • 19.2k
5 votes
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Wheel building - how to tighten spokes to have perfectly equal tension

Don’t obsess over it. Perfect is the enemy of good enough. Something like ±10% spoke tension deviation is perfectly fine. For lateral and radial truing about ±0.5mm is fine. With lower quality (or ...
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  • 19.2k
4 votes

Should an amateur attempt truing a wheel

Yes you could try truing yourself, but also yes you could "destroy the whole thing"! Well, not destroy it, but end up with a wheel more out of true and maybe some damaged spokes. Out of any repair on ...
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  • 41
4 votes

New Park Tool truing stand doesn't seem to be calibrated, calibration seems off out of box

The Park centering tool is just a symmetric piece of metal that fits into the truing stand. If you have a true wheel you can use that just as well. If you are concerned about the dish of the wheel, ...
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  • 346

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