efficiency

I have some new Reynolds SDV66C wheels. I checked them my truing stand, and they are straight, but both wheels have a hop. By eye, there is about 2mm variation around the wheel.

Should I try to remove the hop? What is the proper procedure since I cannot pull out the hop like I would be able to on an aluminum rim? Do I work with four spokes at a time, two at the hop location, and two on the other side of the rim?

Should I just forget about the 2mm variation and just ride them?

FBinNY 

If these are new, they should be much better than that. Anyway, taking hop out of a deep section rim often requires detensioning and starting fresh (not relacing), so it's not something you should be responsible with a new wheel.

I'd speak to the supplier about a possible exchange before I made any decision about these.

If you're willing to accept them, then it's a question of the nature of the hop. A long gentle rise and fall may not be significant in the real world, but the same hop concentrated in a narrow area will cause a noticeable pulse with every revolution and could result in loss of traction in hard cornering.

nwbikeman

I would ask the dealer as those wheels are very sensitive to truing. Check to see what the acceptable tolerance is for this set of wheels for being round and explain that it doesn't look right before you ride them.

efficiency

I actually took a ruler this time instead of just guessing. It's less than 1mm hop variation. My ruler doesn't have any smaller ticks than that.

jimc101

If it's new, why not take it back as defective; if you start trying to fix it yourself, any warranty claim may get rejected as it probably needs to be serviced by a Reyolds trained / approved wheel builder

efficiency

Because I bought it online and taking it back is a hassle. I have also trued plenty of wheels, and built one wheel that has held up really well. Which is why I asked what the procedure was for removing wheel hop in a carbon rim. I know that it is different than an aluminum rim, so I asked.

I'm not going to worry about it. Park Tool says 1/32" is a good tolerance radially, and it's close to that. I usually try to get it tighter, so I had no idea what "normal" was. It's also dead straight.

operator

UH it's no different than removing a hop from an AL wheel.

What you really need to determine, and a spoke tensionmeter will help is if the wheel is actually out of round in that spot or if it's just a truing issue. I'm guessing it's the latter.

And before you take the hop out of the wheel I would also check the tension of the spokes in that area. Don't take the hop out if you have to seriously mess the tension up.