Greetings Posted March 3, 2007 Report Share Posted March 3, 2007 OK people, got one last question concerning 26" rear disc setups.Probably the biggest problem with 26" rear disc wheels is the wheel flex?I need some info about what spokes to use and how many crosses to go for, and maybe any tips that might help make the wheel as strong as possible. It'll be built by my LBS but I don't trust them completely so I will want to give them as much useful information as possible before they get down to it.The wheel will be built on a King singlespeed which is probably a good start.Oh, and I'd really like to know what Bigman used, for if his wheel lasted, mine will. Quote Link to comment Share on other sites More sharing options...
RobinJI Posted March 3, 2007 Report Share Posted March 3, 2007 My tips would be:Make sure the rims eyeletted.More tension than usual, but not looaaads36h!4X!And make sure you get the spokes the right way around on the disc side, asin the ones that are going to take the braking force should be on the outside of the flange on the disc side.Also as its a disc wheel, worry more about even tension than it being perfectly strait.Thats about all I can think of right now.Oh yeah, and DT strait guage spokes if you want ultimate stiffness and strength. Quote Link to comment Share on other sites More sharing options...
Greetings Posted March 3, 2007 Author Report Share Posted March 3, 2007 Cheers, so I should point out to the shop that the braking force will be working the opposite way to a normal wheel?And another thing, DT plain gauge spokes are called Champions, I heard/read that Alpines are way stronger. Do you mean to say that Alpines won't make a stronger wheel for this specific purpose? Quote Link to comment Share on other sites More sharing options...
RobinJI Posted March 3, 2007 Report Share Posted March 3, 2007 I'm not sure of the names of the DT range, are the alpines the Double butted ones? if so they should be slightly flexyer than the staight guage ones, but not nesisarily weaker, or stonger. If alpine are a different make then I've never heard of them. So can't really comment.And yeah, that is what I was meaning about the spoke directions, just mention it to them. Quote Link to comment Share on other sites More sharing options...
Greetings Posted March 4, 2007 Author Report Share Posted March 4, 2007 I think so...This is what they write about Alpines:ClickAnd champions:ClickI don't really understand that table underneath, but it seems to me that the Champions come in greater thickness. Quote Link to comment Share on other sites More sharing options...
ScotchDave Posted March 4, 2007 Report Share Posted March 4, 2007 Right, basically, a double butted spoke flexes more in the middle, so the fatigue is better distributed over a larger volume of spoke, so they last longer. A non butted spoke has a greater absolute strength, however normally snap first because the flex is usually contained in a small volume of spoke, typically near the head of the spoke, which experiences greatest fatigue, so snaps first...I've always used butted spokes so I can't compare the two, but the above is what I've been told and to me it makes sense. Quote Link to comment Share on other sites More sharing options...
Bigman Posted March 4, 2007 Report Share Posted March 4, 2007 I was running a 36h CK discotech with a 36h koxx rim, 4x build using sapin DB spokes, built by tart, they wheel held out VERY well, i had the same build up until a few weeks ago when i demolished the koxx rim on a gap in portsmouth.Adam Quote Link to comment Share on other sites More sharing options...
Greetings Posted March 4, 2007 Author Report Share Posted March 4, 2007 Thanks people. So to sum up, double butted spokes will give a longer lasting but less stiff wheel, whereas plain gauge ones will give a very stiff and strong wheel for a short period of time? I had a rear disc a while ago but that was 20" so it's kind of different, only problem was that after a few months most of the spokes snapped near the head. I think I'll go for the plain gauge ones and see how things go. Don't mind a new wheelbuild every now and then, it's dead cheap including spokes anyway. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted March 5, 2007 Report Share Posted March 5, 2007 So to sum up, double butted spokes will give a longer lasting but less stiff wheel, whereas plain gauge ones will give a very stiff and strong wheel for a short period of time?Pretty much As the Big Man has said though, 4x 36h with butted spokes will be just great, and you won't have to worry about snapping spokes.Adam Quote Link to comment Share on other sites More sharing options...
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