• Rider weight and riding style. Obviously. • Wheel size. 29ers need slightly more strength. • Hub flange offset. This is a big factor. The geometry of the front Erase hub is a bit better than average and, most importantly, the geometry of the rear is very good. • Spoke bed offset in the rim. Also important. • Rim strength. • Spoke count. Front wheels are a lot less demanding of the spokes than the rear.
Another thing to consider is where you use the thin spokes. Each side of your wheel has a different flange offset and, therefore, a different strength and stiffness. You can compensate for this by using thicker spoke where there's less offset and thinner spokes where there's more offset. I usually design wheels to use 1.5 mm spokes on the front right and rear left sides, then match the stress on the other side by using about 1.6 mm to 1.8 mm spokes, as determined by the wheel geometry.
What would you recommend in my case?
70kg, advanced riding, a bit aggressive, I am riding Squamish, whistler and north shore.
My bike is a 161 29er, EX511 rims with Erase hubs 32H
I found so many different spokes choices or hubs holes etc but with not much explanation of the choices, it is so hard to make a decision
I've never ridden their wheels but I've built my fair share of their hubs and rims into wheels. No issues. In the video the wheels just seem like they needed to be re-tensioned earlier than they were.
Loosening like that shouldn't happen, but it's not rare. If a wheel is built with initially low tension, the spokes are likely to fully detention while riding, which almost always causes further loosening.
It's likely they can just be brought up to a higher tension by someone familiar with wheel building and that could be the end of the problems. Higher tension - and maybe more uniform tension - from the factory is likely to prevent it from happening in the future.
e*thirteen has a reputation for rushing products to market in a "beta" state with a high rate of problems. They typically support the customers and sort out the issues in a year or two. Not ideal, but it doesn't mean the products are beyond hope.
I've known more than a few people who have made claims about their OEM wheels. Like I said I haven't ridden them personally, only their rims and hubs, built up into wheels myself. That said, their carbon wheels are a good value if you don't get a lemon with the spoke tension I suppose.
Long answer: DT PHR washers are intended for the DT Squorx Pro Head nipples, which have a radiused ("ball joint") shape, though I'm not certain whether the washers have a radiused edge. If not, you're definitely good to go, as there would be no matching profile with DT or Sapim nipples. Sapim Polyax nipples also have a radiused profile. Assuming the washers have a radiused profile, the question is whether the washers and the Polyax nipples use the same radius and, if not, whether they're different enough to matter.
Recommendation: Proceed, but inspect the quality of the fit before building the wheels. Use grease between the washer and rim, and the washer and nipple.
I got my DT rims with those washers and the DT Squorx Pro Head nipples. Makes sense thanks. First I was thinking to use those nipples and washers with sapim d light spoke but I guess it is not recommended to mix or get all sapim but then I need the washers to calculate the spoke lenght lol The DT washers have a specific shape so not sure if it will fit the sapim nipples
Both are precision companies with good threads. Should be fine. I have had problems with Wheelsmith nipples on DT spokes before, due to poorly cut threads.