I have a pair of Hope Hoops - Pro II hub, Flow rim.
Looking at possibly moving down to a crest rim as although the Flow rims are fantastic I have come to the realisation I just don't need anything that strong etc.
ERD of the Flow is: 536
ERD of the Crest is: 541
Is this too too greater a difference to consider using the same spokes?
Trying to weigh up my options.
Fettle current wheelset or buy new. 😕
Any help would be greatly appreciated 🙂
you'll have 2.5mm less spoke in each nipple.
You can get longer nipples - DT swiss do 12 and 14mm - if you have 12's then the 14's may be all you need but you might add more weight in brass than you've lost in the rim weight...
Use this. [url= http://www.wheelpro.co.uk/spokecalc/ ]Roger Mussons Spokecalc[/url]
Stay with same type rim or use new spokes
Wouldnt build new wheel with old spokes , especially if they are not quite right.
Wouldnt build new wheel with old spokes
It's fine as long as you keep the spoke grouped the same, i.e leading and trailing.
My point was that the old spokes may be 'tired' and have been stretched near their elastic limit
have built 'hundreds' of wheels and using old spokes tends to lead to spoke breakages and truing problems.
just dont see the point in scrimping and would never recommend it. new rim , new spokes , good build and wheel will feel superb. New rim , old spokes , future wheel problems and left wondering why you didnt just change the spokes.
I have used old spokes without issue Mr Mussons book says ot os ok to do this iirc.
Had loads of problems from customers who insisted on using them, regardless of what Mr Mussons says. Built wheels for a very well respected shop in the NW so will rely on my experience in deciding whether old spokes are a good idea. (The OP is using old spokes that are not even the correct length = bodge job)
Old spokes are fine, seeing as wheel building is really pretty quick and easy I would use them and if any break, well you know what to do. Margin Walker can you define "tired"? And can you tell us why stretching them to near their elastic limit is a bad thing?
The correct length is a subjective thing is it not? All spoke calculations lead to a spoke of some random decimal length so you either go up one or down one, spoke length is also dependent on the size of nipple you plan to use, so using a longer nipple to account for "shorter" spokes is absolutely fine.
Agree that using old spokes can be fine, I've re-used a set, and it was standard practice when replacing a rim at work.
MW for the second consecutive thread I've clicked you're coming across as a prat. I'm sure you're a good wheelbuilder, but so is Roger Musson, in fact he's more respected that you, and you're going against the rather widespread practice here. Yes, new spokes will be better, but you can build excellent wheels with the old spokes, as you can build rubbish ones with new spokes.
Back to the original point however, I'd not re-use spokes in that instance, that's quite a discrepency. Sell wheel, buy new Hope Hoop with Crest rim and Evo hub.
Prat is a bit harsh and ultimately you end up agreeing with me in respect of the OP's original post. Didnt say it couldnt be done, just that I have had more problems in the past when not using more spokes, My opinion is from experience based on building hundreds of road/mtb wheels, unlike a lot of stw posters who simply rely on google/heresay for their dogmatic posts.
Not sure wheel builds with old spokes is widespread practice but I stand by what I said. Just wouldnt recommend that its the same as using new spokes , especially when using a different rim.
(as for slating me on another thread about use of the word chainy, again , a bit harsh when the advice was correct. I wonder how you cope with other threads where the ususal STW suspects come out with the most ridiculous opinions)
Not a prat, just someone who loves bikes, has worked in the trade , races and has done for years 😉
My opinion them in use that from experience based on building hundreds of road/mtb wheels, unlike a lot of stw posters who simply rely on google/heresay.
Bit harsh suggesting we use Google I could equaly say I have ridden every wheel i have ever built so know more about them in use than you do about the ones you built.
Not arguing it wont help the OP
OP it is your call reuse spokes with longer nipples or sell/get new. I would probably get new if I had to bother getting new nipples tbh.
Children please 😆
Thanks for the responses.
The wheels have seen very little use so I would hope the spokes would be okay but acknowledging the point above about longer nipples I think I will look into a complete new set.
Thanks again.
M
I
have built 'hundreds' of wheels and using old spokes leads to no spoke breakages or truing problems.
OP I wouldn't go through the pain/expense of a rebuild just to save that little weight, not worth it for me.