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Mavic Open Pro Replacement

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Mavic Open Pro Replacement

Old 11-26-11, 11:22 AM
  #1  
Homebrew01
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Mavic Open Pro Replacement

My Open Pro has developed the inevitable cracks around the spoke nipples, so I need a new rim. It's 32 hole built on a Powertap. I'm planning to just swap the rim & keep the spokes, so it needs to be a 602 ERD rim. Any rim suggestions ? Is there a list somewhere of rims and their ERD ?
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Old 11-26-11, 11:55 AM
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I guess it's to obvious to ask why you don't want another Open Pro? The DT Swiss 465 is a very similarly speced rim and has an ERD of 599mm. If your spokes were slightly short, the 465 might work, I dunno. But it's so similar to the Open Pro I wouldn't bother with the switch unless you were rebuilding with new spokes.
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Old 11-26-11, 11:58 AM
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Originally Posted by Homebrew01 View Post
My Open Pro has developed the inevitable cracks around the spoke nipples, so I need a new rim. It's 32 hole built on a Powertap. I'm planning to just swap the rim & keep the spokes, so it needs to be a 602 ERD rim. Any rim suggestions ? Is there a list somewhere of rims and their ERD ?
Velocity claims a 602mm ERD for the Aerohead.
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Old 11-26-11, 02:45 PM
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Mavic rims have a rep for cracks developing (at least with me and the handful of mechanics I've spoken to). I vowed to not go Mavic again.
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Old 11-26-11, 02:50 PM
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I've destroyed two sets of Open Pro rims. Pulled the spokes through on both of them after a year or two. I find Kinlins to be much more durable. Specifically the 27's and 30mm options. Probably won't work with those spokes though.
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Old 11-26-11, 03:03 PM
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No excuse for a 32 hole rim to crack. Never happened to any other brand I've used over the years.
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Old 11-26-11, 03:06 PM
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I thought you couldn't reuse old spokes?
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Old 11-26-11, 03:11 PM
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Originally Posted by Drew Eckhardt View Post
Velocity claims a 602mm ERD for the Aerohead.
+1 for this producer. Also consider: Velocity A23 = 601 ERD
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Old 11-26-11, 03:42 PM
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Spocalc lists these rims at 602 or 602.5 ERD:

Mavic A317 Disc
Mavic A319 D 05
Rigida CHP-6
Ritchey Aero Road, centered and OCR
Velocity Aerohead
Velocity VXC 700c
Wolber TX Profil Aero

I don't know if I'd go down in ERD too much if at all; used spokes will be a little stretched and may end up too long. If it were me, I'd just get new spokes with whatever rim I wanted. DT Comps, for example, are not that expensive that I'd find it worthwhile to (a) limit my choices so severely and (b) rebuild the wheel much sooner than I might otherwise.
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Old 11-26-11, 03:48 PM
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Originally Posted by Barrettscv View Post
+1 for this producer. Also consider: Velocity A23 = 601 ERD
Really enjoying my A23 rear wheel.
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Old 11-26-11, 04:15 PM
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I've also had a number of open pros crack. They have put me off all Mavic products.

Kinlins seem to work pretty well. You can get them, and Sapim spokes, for reasonable prices from BikeHubStore.

Use heavier spokes on the DS (i.e. Sapim race) and lighter ones on the NDS (Sapim laser). You can also consider lacing the DS 1x heads in for a better bracing angle.
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Old 11-26-11, 04:31 PM
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Thanks for all the replies. Current setup is 3x DT spokes, look like 14 gauge (not sure). I'll shop around for some of the suggestions.
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Old 11-26-11, 04:51 PM
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open pro

open pro's seem like Revo's(14/17/14)spokes better than the heavier spokes.
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Old 11-26-11, 08:09 PM
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If you can find an Ambrosio Excellight rim, that should have a compatible ERD. The last Open Pro I measured had an ERD of 603mm. But if you have straight gauge spokes, you may want to consider replacing them with butted spokes while you are already replacing the rim. In that case you have lots of rim options. The A23 rims previously mentioned are nice. For a 32 spoke PowerTap wheel, I would lace the spokes cross-2 and not cross-3 in order to get a better spoke line.
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Old 11-26-11, 11:09 PM
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Originally Posted by Commodus View Post
I thought you couldn't reuse old spokes?
It would be silly not to unless you want to change rim model.

They last pretty much indefinitely when properly stress relieved and not damaged by a thrown chain, with one extreme documented example being Jobst Brandt's 300,000 mile set of 15/16 gauge spokes and hub shells.

Relacing is also slower than undoing the nipples down to the last few threads, taping the next rim to the old one in a few places, lubricating new nipple sockets, transferring spokes one at a time taking the opportunity to re-lubricate spoke threads, removing the old rim, and then tensioning as you would with a completely new rim (no stress relieving is necessary because the spokes retain the same positions).
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Old 11-27-11, 12:15 AM
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BTW, Mavic's number of 602mm for the Open Pro's ERD may or may not be directly comparable to other manufacturers' ERD figures. For example, Spocalc lists the Open Pro at 605mm. I've found that at least for the rims I've used, Spocalc's numbers are accurate and consistent with the manufacturers'. e.g., Velocity Razor at 607mm. Using Spocalc and plugging in manufacturers' numbers for the Aerohead, Aerohead O/C, a variety of Kinlin rims and Ritchey rims also resulted in spot-on spoke lengths.

The moral of the story is that it appears that Mavic's number should be converted, depending on which spoke length calculator you're using.
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