Failed @ first wheel truing attempt, how can I start over?
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Failed @ first wheel truing attempt, how can I start over?
Hello
So I have a few 700C wheels that are way out of true. I've been trying to practice wheel truing and started messing around with one of them (a shimano wh501 front wheel). I don't own a truing stand, I just use the brake pads from one of my bikes. Anyway, I messed up pretty bad and the wheel is waaaaaaaay worse now then it was before and i'm lost as to where to even start trying to fix it. I initially was able to fix the problematic area of the wheel, or so I thought, but then another section started rubbing, i'd fix that, then the rubbing went somewhere else, repeat. Then i'd go back, loosen this, tighten that......yeah. Wheel is ALL whacked out now..lol.
As a noob to truing, how would I sort of start from scratch here? Am I able to loosen ALL the spokes and then tighten them gradually?
So I have a few 700C wheels that are way out of true. I've been trying to practice wheel truing and started messing around with one of them (a shimano wh501 front wheel). I don't own a truing stand, I just use the brake pads from one of my bikes. Anyway, I messed up pretty bad and the wheel is waaaaaaaay worse now then it was before and i'm lost as to where to even start trying to fix it. I initially was able to fix the problematic area of the wheel, or so I thought, but then another section started rubbing, i'd fix that, then the rubbing went somewhere else, repeat. Then i'd go back, loosen this, tighten that......yeah. Wheel is ALL whacked out now..lol.
As a noob to truing, how would I sort of start from scratch here? Am I able to loosen ALL the spokes and then tighten them gradually?
Last edited by c4p; 02-15-19 at 12:32 PM.
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I'd try loosening all of the spokes until I could see just one spoke thread at the nipple and start over.
The issue to look out for is spoke wind up. You want the nipple to twist relative to the spoke. That doesn't always happen. Sometimes it's easier to learn by starting with all new components.
The issue to look out for is spoke wind up. You want the nipple to twist relative to the spoke. That doesn't always happen. Sometimes it's easier to learn by starting with all new components.
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My advice would be to take the wheel to someone with some experience who will let you watch the process. If you want to make another attempt yourself, the first step would be to identify any spokes that are significantly different in tension from the average. You can do this by plucking the spokes and listening to the tone. Mark the high and low tension spokes on the brake surface with different colored Sharpies, then see if the out of true spots correspond to the out of tension spots. The goal is to have equal spoke tension and a rim that runs true.
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One bit of advice I got a long time ago is to start with basic stuff. In wheels this is 32/36 spokes on non brand specific stuff. Use masking tape on the spokes to work on (defined by the area of the deviation). Count number of turns per spoke, make a list if you tend to forget easily (short term challenges). Turn one spoke and look at the resulting change to trueness. Go back and reverse the turns and see if the rim returns to the initial condition. Remember which side of the rim you're looking at as you turn the nipple which way. Andy
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Fortunately, you haven't permanently damaged anything. Try Retro's approach and loosening everything until just a single thread is protruding from the top of the nipple. Everything should be really loose at this point. The simply work out all the play evenly and see where you're at and go from there. Once you've done this a few times you'll get a feel for the spoke tension and it begins to come naturally. I usually put my bikes on the work stand and clamp a wrench to the side of the fork or frame being careful not to scratch anything and then just spend some relaxing time with a beer or three and before I know it, it's running true. Biggest problem I have isn't side to side, but up and down. Good luck and enjoy the experience.
#6
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USED wheels can be problematic for a beginner.
FIRST- Examine the rims to make sure they aren't bent from running into curbs etc.
Use an adjustable wrench for a "gauge" and run the jaws around the circumference to make sure the brake tracks aren't "splayed out.
That'll eat you up if trying to true from one side at a time. You get one side "true" and the opposite side is 2X as bad. You go to that side and make the problem worse.
One method (messy) is to take a felt tip marker. Spin the wheel and use the marker on both sides to just touch the high spots.
Examine WHERE the high spots are. If across from each other, the rim is "splayed".
FIRST- Examine the rims to make sure they aren't bent from running into curbs etc.
Use an adjustable wrench for a "gauge" and run the jaws around the circumference to make sure the brake tracks aren't "splayed out.
That'll eat you up if trying to true from one side at a time. You get one side "true" and the opposite side is 2X as bad. You go to that side and make the problem worse.
One method (messy) is to take a felt tip marker. Spin the wheel and use the marker on both sides to just touch the high spots.
Examine WHERE the high spots are. If across from each other, the rim is "splayed".
#7
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It's an art and, not a science for me. Just like tuning the strings on a guitar. Small fine adjustments can make a big difference in how true a wheel spins. One of the most important things I've learned from reading these forums is when you tighten a spoke on one side of the wheel, you need to loosen the spoke an equal amount on the other side of the wheel.
#8
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Front wheels are easy. Rear wheels are hard. Front wheels (should) have equal tension on all the spokes. Rear wheels have much higher tension on the drive side spokes than the non drive side. The drive side spokes are shorter than the non drive side. And of course, the drive side is where the chain is. So, get back in there and get those wheels spinning true!!!!!
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If you tighten the spokes uniformly, and the wheel is still crooked, then the rim is bent. Not your fault, so don't expect perfection, just do your best to straighten the wheel while keeping the spoke tension as uniform as possible. Pluck the spokes like guitar strings to compare the tension.
I guess the person who said it's like tuning a guitar is right, and with each wheel you work on, you can't help but to get better slightly at the task as you gain experience. Keep at it, and just go do something else for a while if you get frustrated (you will) and good luck.
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I've found the biggest asset in building wheels is patience. Presuming that the lacing is correct, when you start bringing the spokes up to tension, make small adjustments. As a habit, I turn the spoke wrench a quarter-turn or so, and then back it off a bit. Avoid big adjustments (even where the rim is most out of lateral true) by making a larger number of small adjustments to tension. You'll be happier and the wheel (and by inference, you) will be better off as a result.
For a rear wheel, once the dish is close, I make initial adjustments with the DS spokes. The NDS spokes, being under a lower tension due to the bracing angle, are easier to adjust. Bringing up the NDS tension will increase the DS tension, so don't go all in on the DS spoke tension. Again, small adjustments and patience will result in success.
One more small item - I dip the spoke threads in linseed oil and the let the excess drip off as I lace the wheel. This helps with adjustments when truing, and the linseed oil will become "gummy" with age and help to prevent spokes loosening up. You can buy "spoke prep" but linseed oil has been used for a long time for this purpose and works well.
One more small item - I put a tiny dab of grease on the conical part of the nipple before screwing it onto the spoke. This will help make the adjustments smoother, as you won't have to overcome nipple-on-eyelet metal-on-metal friction.
For a rear wheel, once the dish is close, I make initial adjustments with the DS spokes. The NDS spokes, being under a lower tension due to the bracing angle, are easier to adjust. Bringing up the NDS tension will increase the DS tension, so don't go all in on the DS spoke tension. Again, small adjustments and patience will result in success.
One more small item - I dip the spoke threads in linseed oil and the let the excess drip off as I lace the wheel. This helps with adjustments when truing, and the linseed oil will become "gummy" with age and help to prevent spokes loosening up. You can buy "spoke prep" but linseed oil has been used for a long time for this purpose and works well.
One more small item - I put a tiny dab of grease on the conical part of the nipple before screwing it onto the spoke. This will help make the adjustments smoother, as you won't have to overcome nipple-on-eyelet metal-on-metal friction.
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Use talcum powder to highlight and keep track of high sides and run out. De-stress the spokes every time an adjustment is made.
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Before my first home truing, the mechanic at my LBS let me feel up a properly-tensioned wheel. Good thing, because it was more springy and less rigid than I'd expected. It was a help.
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#15
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I'm also a rookie when it comes to truing wheels. I've only done three, so I'm most likely more lucky than good, lol.
I'll second the ideas of lubing the nipple threads and the point where they spin in the rim as they are adjusted. I did that, and it helps noticably.
I had the opportunity to use a truing jig. I know they're not cheap, but it really helped.
I was concerned that I'd need a spoke tension gauge. I opted to try my work for a while. Two of the three wheels I did are still good. The third was badly tacoed, and has moved a bit. I plan on going back to it soon. I will get a tension gauge. Guess I could "feel up" a few wheels at the LBS. That should get me thrown out.
I agree that it's a bit art, a bit science. But, I yam a rookie.
I'll second the ideas of lubing the nipple threads and the point where they spin in the rim as they are adjusted. I did that, and it helps noticably.
I had the opportunity to use a truing jig. I know they're not cheap, but it really helped.
I was concerned that I'd need a spoke tension gauge. I opted to try my work for a while. Two of the three wheels I did are still good. The third was badly tacoed, and has moved a bit. I plan on going back to it soon. I will get a tension gauge. Guess I could "feel up" a few wheels at the LBS. That should get me thrown out.
I agree that it's a bit art, a bit science. But, I yam a rookie.
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The first time I had my fingers in a front hub I was at it all night. (That's literally true: it took longer than I thought, and I was hoping to ride the next day.)
Last edited by rseeker; 02-17-19 at 08:23 PM.
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First time I ever thought that spoke nipples could be third base.
I'm almost certain Scotty, the engineer of the Star Trek Enterprise, has had some intimate moments with the warp drives.
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[QUOTE=408mopar;20799660]I'm also a rookie when it comes to truing wheels. I've only done three, so I'm most likely more lucky than good, lol.
...QUOTE]
That is the thing about trueing one's own wheels.
Once they get good at it they don't have to true the wheels for a long time. Then the skill sets deplete a little.
But yeah, a wheel trueing stand, spoke tensioner and a dish tool comes in handy.
...QUOTE]
That is the thing about trueing one's own wheels.
Once they get good at it they don't have to true the wheels for a long time. Then the skill sets deplete a little.
But yeah, a wheel trueing stand, spoke tensioner and a dish tool comes in handy.
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You'll be amazed how far 1/4 turn on a spoke nipple will move the rim. As previously mentioned, back them all off until you see 1 thread on each spoke and then SLOWLY tighten them 1/4 turn at a time. After it's close, 1/8 turns will finalize it. Wheel truing takes time--don't try to rush it. If you get flustered, STOP! Take a break and come back to it after you've re-composed yourself. Again, DON'T RUSH. Good luck and keep us posted.
Jon
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Unless I missed it in the previous responses, let the air out of the tire before you do any adjusting. Also the advice about doing 1/8 or 1/4 turns is spot on.
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Start over.
I'd try loosening all of the spokes until I could see just one spoke thread at the nipple and start over.
The issue to look out for is spoke wind up. You want the nipple to twist relative to the spoke. That doesn't always happen. Sometimes it's easier to learn by starting with all new components.
The issue to look out for is spoke wind up. You want the nipple to twist relative to the spoke. That doesn't always happen. Sometimes it's easier to learn by starting with all new components.
#22
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Also, the rims I did were aluminum, except for one I tried to true for a friend. It was steel, and I couldn't get it to move the way I wanted it to. I assumed it was because it was steel, but I don't know.
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Ideally remove the tire from the rim.
Most everything else is good, particularly loosen the spokes to one thread showing, then start again.
With the wheel off and the heads of the spokes showing you could put a tiny bit of oil on the end of the spoke.
Most everything else is good, particularly loosen the spokes to one thread showing, then start again.
With the wheel off and the heads of the spokes showing you could put a tiny bit of oil on the end of the spoke.
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