spoke length mavic 517 v 717 ?

I`m looking to replace an old Mavic 517 on a Hope XC front ie last century` kit
with a new 717 rim---hub is disc specific.
Although spoke calculator online exist thy requier a very accurate measurement of hub diamner and spoke; probably soemone on this forum has replaced a 517 with a 717 so can anyone give an answer on whether I`ll need a new set of spokes (assuming old ones are OK)
OR if I do what lengths are required for a 717 rim on the front ?
thanks for help with this

Although spoke calculator online exist thy requier a very accurate measurement of hub diamner and spoke; probably soemone on this forum has replaced a 517 with a 717 so can anyone give an answer on whether I`ll need a new set of spokes (assuming old ones are OK)
OR if I do what lengths are required for a 717 rim on the front ?
thanks for help with this

0
Posts
if the ERDs are the same or very close you could be OK but is does depend on the old spokes.
Parktools :?:SheldonBrown
517 540.5 mm
717 541mm
an easy spoke calc with hub and rim info
http://lenni.info/edd/
Parktools :?:SheldonBrown
just a fraction mm different from lenni
Parktools :?:SheldonBrown