Another broken spoke...

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confusedcyclist

confusedcyclist

Veteran
Well guys, having mucked about with my "get me home" replacement R501 replacement factory wheels and my wrecked rear wheel for a couple of hours, and re-reading this thread I will certainly be learning to build a wheel as soon as possible!

Thanks for everyone's advice!
 
Location
Loch side.
Wheel building for me is a hobby but I'm passionate about it so I spend most of my spare time trying to get better and better. I read anything that can teach me something. I already bought a copy of the art of wheelbuilding by Gerd Schraner which is in the menu for that period between Christmas and New Year :laugh:.

Pity you bought that copy. It is full of errors and misconceptions. Gerd doesn't understand stress relieving. He confuses pre-stress and stress relieving. He talks bout balancing (what the hell is that?) and "stability" in a weird context. Read if but only if you have JB's book firmly under your belt so that you can spot poor advice for good. That books makes me wonder about DT Swiss understanding of the topic. Now that's a scary thought.
 

Spoked Wheels

Legendary Member
Location
Bournemouth
Pity you bought that copy. It is full of errors and misconceptions. Gerd doesn't understand stress relieving. He confuses pre-stress and stress relieving. He talks bout balancing (what the hell is that?) and "stability" in a weird context. Read if but only if you have JB's book firmly under your belt so that you can spot poor advice for good. That books makes me wonder about DT Swiss understanding of the topic. Now that's a scary thought.

Oh gosh.... I'll have to get a novel instead :laugh:

Not having read the book, I have no idea in what context he uses the word balancing but I know of a few people that use it. Roger Musson, who wrote the wheel building guide I learnt from uses it in the following context: the process of adjusting the spoke tension on one side of the wheel so the overall tension is balanced, uniformed (equalising spoke tension) - removing any under tensioned spokes, what I call lazy spokes, and any over tensioned spokes, ending with a wheel that has all its spokes at about the same tension on the same side.
No idea what you mean about what DT Swiss understanding..... what is the scary thought? :giggle:
 
Location
Loch side.
Oh gosh.... I'll have to get a novel instead :laugh:

Not having read the book, I have no idea in what context he uses the word balancing but I know of a few people that use it. Roger Musson, who wrote the wheel building guide I learnt from uses it in the following context: the process of adjusting the spoke tension on one side of the wheel so the overall tension is balanced, uniformed (equalising spoke tension) - removing any under tensioned spokes, what I call lazy spokes, and any over tensioned spokes, ending with a wheel that has all its spokes at about the same tension on the same side.
No idea what you mean about what DT Swiss understanding..... what is the scary thought? :giggle:

Roger would have done better if he simply said "true and centre the wheel."

DT Swiss promoted(s?) a book about wheelbuilding with big flaws in it. At one stage the book was their kinda official guide to wheelbuilding. They're in the business of wheels in a big way, so why not just correct the errors?
 

Spoked Wheels

Legendary Member
Location
Bournemouth
Roger would have done better if he simply said "true and centre the wheel."

TBH I understand exactly what Rogers means and I guess most people would too, perhaps reading how he explains the process makes a difference but since I go through the process several times while I build a wheel, the terms balancing / equalising the spokes come naturally to me. This is not the process of truing the wheel BTW. As for the term centring a wheel, I would imagine the process of adjusting the spokes tension so that the rim is in the middle of the two hub ends, consequently the wheel is in the centre of the dropouts when fitted to the bike. and that process I know it as dishing the wheel.

I have not heard about that book, but I'll keep in mind your observation. :smile:

I don't know how many books are out there but when you read them you find little things that are the same as in other books. Other things are little variations. Jobs Brandt's book is a bit different, it deals with the physics involved that other books don't go into any depth and that is why I read it, having said that, that very same reason puts other "want to learn" wheelbuilding people off and don't read it. I'm a fun of Roger Musson book, he can come across a bit patronising but his practical and hands on approach suits many readers, furthermore, he keeps it simple enough. I, like many people, want to get on with things so I just need enough information at that point. Later, I'll seek further information.

I had a friendly discussion with a professional wheelbuilder about wheel lateral strength and lateral stiffness. I quoted JB where he basically says if the wheel is strong enough is also stiff enough. The wheel builder did not appreciate the importance that JB gives to lateral stiffness, he felt JB underestimated lateral stiffness. Basically the two points of view were "Although it is worth analyzing, stiffness is not an important consideration in wheel design" VS "Stiffer wheels flex less which mean spokes fatigue at a slower rate so it is very important indeed" I'm afraid I didn't do a great job defending JB's book, partly due to the fact that perhaps my English language skills were not up to the task but also the man had some very valid points, or at least I thought so :smile:
 
When do I cut my losses with a wheel that keeps breaking spokes?

I had a broken spoke a few weeks ago - see here - http://www.cyclechat.net/threads/am-i-walking-home-broken-spoke.167653/

Quick update on that, my LBS said the wheel was out of true and was bobbing up and down, likely due to a side impact. I had hit a kerb a few weeks prior avoiding a car pulling in on me... the mechanic managed to get it straightened out. They replaced the spoke and trued the wheel and sorted out the ding for £20. Today I lost another spoke on the way in to work.

I have the tools I need to replace the spoke myself this time as I hate not being able to fix these myself. Its a newish P-Elite C Wheelset that came stock on my Defy 1, it's only done 600 miles, but given the previous damage and the fact that I lost another spoke today should I consider buying a new wheel, or opt for the repair again?

What a hassle, was late in to work today because of it! :cursing:
Sometimes you just get a crap wheel. I had a set of rims on my winter bike. Less that 400 miles on them and was changing spokes weekly on the rear. Bought a new set and loosened all the spokes on the old one. Discovered the rim would not go into true and was in fact like a pringle crisp and it went in the bin. LOL There is nowt you can do for them when that's the problem. I can only presume one of the kids was using it as a trampoline. Just get a new wheel. It will save the doubt on the long rides. All the best
 

tommaguzzi

Über Member
Location
County Durham
My mate had spokes breaking on the rear of his new giant defy. He took it back a couple of times. But third time he bit the bullet and bought a pair of entry level marvics from decathlon. No problems since.
 
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