Replacing rims.

Hi, not sure if I've put this is the right section so apologies if it's not.

I have a wheelset which consists of Deore DX hubs, DT Swiss spokes & Specialized GX23 rims.

The rims are very concave & worn so I've picked up a cheap pair of used good condition rims, which are Mavic 237 & Mavic 217/517.

My plan is to swap the rims over by taping the new rims in position to the old and just swapping the spokes across.

The rim profile is a different shape on the Mavics - especially the 217/517 which is more of a 'V' shape. Is it possible to just swap rims over like that if they are not like for like or will the spokes be the wrong length?

I did enquire at the local bike shop about swapping rims over but they said they would not reuse old spokes because they stretch, and was quoted £150 for the job using new spokes. This is a budget build so that's not an option!

You need to check the spke length needed on a spoke calculator - there is one on the DT Swiss website I think.

Thanks Fagin. I did go on that but it asks for a lot of info that I just don't know about my hubs & rims.

You need to look up the ERD of the rim - that's the diameter of the rim at the spoke bed. If they are within 2-3mm you will likely get away with it.

GX23 ERD seems to be 547.omm, while 217s are 539, so you're out of luck on that one.

Thanks Hamster. I've just done a bit of googling and found the following:

Mavic 237 ERD - 539mm
Mavic 217 ERD - 540.5mm
Specialized GX23 ERD - 547mm

Looks like it's not going to be possible.

My_Teenage_Self":1i2jrktt said:

GX23 ERD seems to be 547.omm, while 217s are 539, so you're out of luck on that one.

Click to expand...

& thanks, you beat me to it!

Time for new spokes & nipples.

jimo746":lxtddu7k said:

Time for new spokes & nipples.

Click to expand...

I have my eye on some Araya RM17's which have an ERD of 547

IIRC Mavic 231 are around 547/548.
You could probably get away with the same spokes by going to 2X lacing, but that's a bit more involved...