Building 24h rim onto 32h hub

[Trackz]

Anyone tried this? I have a Mavic 819 24h rim and cannot find a suitable 24 hub so thinking of getting a 32h so as not to waste the 24h 819 rim. I read about triplet lacing and people that have done it but I'll probably mess it up. Who's tried this? Did it work sufficiently?

[Johan Bornman]

Let me put you out of your misery. You've suffered enough looking for a hub and all.

 

Toss the old hub and rim. Do it now before you're tempted to frustrate yourself again.

 

Then look for a decent 32-H wheel or have one built up with standard components that can be replaced easily as and when neccessary.

[BogusOne]

Let me put you out of your misery. You've suffered enough looking for a hub and all.

 

Toss the old hub and rim. Do it now before you're tempted to frustrate yourself again.

 

Then look for a decent 32-H wheel or have one built up with standard components that can be replaced easily as and when neccessary.

 

Nonsence JB.

 

At the OP get yourself a 36 hole hub. It can be done. Just get your spacing right. Also know from personal experience.

 

 

http://sheldonbrown.com/rinard/images/36_24_1.jpg

 

http://sheldonbrown.com/rinard/36-24.htm

[Pappa Bear]

I Have a 24h front hub, 15mm thru axle Easton Haven if you a are interrested....

[pista]

 

 

Nonsence JB.

 

At the OP get yourself a 36 hole hub. It can be done. Just get your spacing right. Also know from personal experience.

 

 

http://sheldonbrown.com/rinard/images/36_24_1.jpg

 

http://sheldonbrown.com/rinard/36-24.htm

 

I can be done but I wouldn't ride it

[Tumbleweed]

 

 

I can be done but I wouldn't ride it

 

Why not?

[BogusOne]

Why not?

 

+1

[JA-Q001]

Why not?

 

I also dont understand why, Ive built a few wheels using mix matched hubs and rims like this. A 24hole rim with 32hole hub is actually nice for road wheels, because you can build it up with a 2 to 1 lacing pattern (double the amount of spokes on drive side), it worked perfectly.

[Trackz]

Some good replies thanks.

 

JB: Yip, agree, I'm building a new wheel as you suggested, Crest with Hope Pro 2 32h but the 819 is such a nice rim it's a sin to toss it so want to fix it & use as a spare.

 

Some suggest the triple lacing 16/8 spoke split may even be stronger than a 16/16, only problem off course is when a spoke goes the wheel is very skew! Worth a try just to be different, its a spare anyway.

[Johan Bornman]

Nonsence JB.

 

At the OP get yourself a 36 hole hub. It can be done. Just get your spacing right. Also know from personal experience.

 

 

 

 

http://sheldonbrown....inard/36-24.htm

 

Which part of my suggestion is nonsence i.e. not true?

 

I have good reason for suggesting that the project is not worthwhile. The fact that it can be done doesn't make it sensible.

 

1) A 24H Shimano hub is not available unless it is one of Shimano's factory wheel parts. These hubs, afaik, are all straight-pull hubs which require special spokes not readily available. Even if it is a J-bend hub, then other reasons make the project a non-starter.

 

2) With any brand of hub, 24H is a problem.

 

3) 24H is just not good enough for a MTB wheel. It will be an inferiour wheel.

 

4) The Mavic X819 rim is rubbish. Those sockets quickly corrode, especially with a bit of sealant leaking into the rim cavity.

 

5) 36H MTB hubs are also in short supply.

 

6) MTB hubs are not meant to be used with radial lacing. The flange will break out.

 

At the end of the day, all the OP has is a rim, that's rubbish, and now he wants to Heath-Robinson all sorts of fancy spoke patterns and lacings to that. I think the project is a non-starter and not worth the effort. Sometimes we just store such components until the sentiment passes and we can chuck them.

Edited December 12, 2012 by Johan Bornman

[dee_biker]

The question is whether you will trust this wheel... I know I wont. Going down a technical downhill at 50km/h and then hard on the brakes, I would rather want something I trust, and not have that clunk clunk clunk sound with spokes going!!!!

[Trackz]

Smile at JB. I think you hit the nail on the head ... sentiment! I still have my 1985 Le Turbo road bike and 30kg Peugeot tandem!

Thanks for the discussion, for now I can't wait to get the Hope hub rolling later today!

[Big H*]

Some good replies thanks.

 

JB: Yip, agree, I'm building a new wheel as you suggested, Crest with Hope Pro 2 32h but the 819 is such a nice rim it's a sin to toss it so want to fix it & use as a spare.

 

Some suggest the triple lacing 16/8 spoke split may even be stronger than a 16/16, only problem off course is when a spoke goes the wheel is very skew! Worth a try just to be different, its a spare anyway.

 

Why not use Kevlar strands for those long spokes?. Would be very interesting. The London Eye is a wheel laced with cable.and spokes and it worx.

[BogusOne]

Which part of my suggestion is nonsence i.e. not true?

 

I have good reason for suggesting that the project is not worthwhile. The fact that it can be done doesn't make it sensible.

 

1) A 24H Shimano hub is not available unless it is one of Shimano's factory wheel parts. These hubs, afaik, are all straight-pull hubs which require special spokes not readily available. Even if it is a J-bend hub, then other reasons make the project a non-starter.

 

2) With any brand of hub, 24H is a problem.

 

3) 24H is just not good enough for a MTB wheel. It will be an inferiour wheel.

 

4) The Mavic X819 rim is rubbish. Those sockets quickly corrode, especially with a bit of sealant leaking into the rim cavity.

 

5) 36H MTB hubs are also in short supply.

 

6) MTB hubs are not meant to be used with radial lacing. The flange will break out.

 

At the end of the day, all the OP has is a rim, that's rubbish, and now he wants to Heath-Robinson all sorts of fancy spoke patterns and lacings to that. I think the project is a non-starter and not worth the effort. Sometimes we just store such components until the sentiment passes and we can chuck them.

 

All fair and well. Each to his own opinion then.

 

Just one question though regarding your point nr 3? So do you mean to say that a 24spoke mtb wheel like the Easton EA90XC wheels are NOT good enough? Dont take this as an attack, merely asking for your opinion on them.

 

http://www.probikeshop.com/images/products2/24/68200/68200-EASTON-Roue-AR-EA90XC-UST-29-10mm-Noir-2011.jpg

[V12man]

The question is whether you will trust this wheel... I know I wont. Going down a technical downhill at 50km/h and then hard on the brakes, I would rather want something I trust, and not have that clunk clunk clunk sound with spokes going!!!!

 

50... I show 74kph on my Sani2C GPS tracings this year, and 71, and 73 - NO way I would trust a dodgy wheel build at that speed - and I don't think we are the fastest down hill either, by any manner of means.

 

Its that small dropoff that catches the front wheel a bit skew and you yank it straight with the bars, and the wheel pancakes...and stops DEAD in the forks that hurts - even at 15kph - rather follow JB's advice and build new - if you crash the new wheel, then you can get it fixed while you recover you don't need a dodgy spare.

[Johan Bornman]

All fair and well. Each to his own opinion then.

 

Just one question though regarding your point nr 3? So do you mean to say that a 24spoke mtb wheel like the Easton EA90XC wheels are NOT good enough? Dont take this as an attack, merely asking for your opinion on them.

 

 

 

This is an inferior wheel in more way than one.

 

1) It has aluminium nipples.

2) Not enough spokes

3) So flexible that it will routinely touch the fork or seatstays.

4) If one spoke breaks on your ride, you walk home.