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PostPosted: Wed Sep 25, 2013 1:26 pm 
Dirt Disciple

Joined: Thu Jul 07, 2011 12:16 pm
Posts: 55
Location: Moscow, Russia
I bought recently wheelset with these rims and my bike-master told me it's unsafe to ride it because of wear
Image

but according to specs this is the concave rims
http://www.planetbicycle.com/products/rims/araya.html
There is 2 straight lines in the profile and i tried to catch one of them with the ruler
Image
so the rims are ok not worn?


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PostPosted: Wed Sep 25, 2013 1:57 pm 
Retro Guru

Joined: Mon Feb 11, 2008 9:42 am
Posts: 2362
Measure the wall thickness at the centre line of the braking surface.
Try and measure the wall thickness of an unused rim as well (doesn't have to be the same model/brand, just a similar rim to give you an idea of how much material you've lost. But if you can get one the same, all the better)

Also, how much gouging/grooving of the surface is there. I've found that when rims are near to disintegrating, the brake track tends to mark up and damage much easier than it does when new (when you still have the anodized surface to brake against.)


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PostPosted: Wed Sep 25, 2013 4:26 pm 
Gold Trader
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Joined: Thu May 20, 2010 9:13 pm
Posts: 4833
Location: All you other Iron Men are just imitating
This is a 395 that has done less than 50 miles. ....your friend may be right. Yours look worn


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PostPosted: Wed Sep 25, 2013 5:04 pm 
retrobike rider
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Joined: Fri Aug 08, 2008 2:36 pm
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Location: Yorkshire, England
Is it RM395-Team or RM395-TeamXC there is a difference, the later version (Team-XC) had a flat wall as pictured in the post above and the original version had Araya concave wall technology (and was a nicer and lighter rim)
They are tough as hell, I've rammed mine, worn mine and still they havn't gone.

I'd tide the top picture if it's a 'Team' and still do.

http://www.araya-kk.co.jp/rim/archive.htm


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PostPosted: Wed Sep 25, 2013 5:20 pm 
Old School Grand Master
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Joined: Fri May 01, 2009 7:11 pm
Posts: 8479
Location: Fircombe.
http://www.araya-kk.co.jp/rim/archive/1992/01-02.htm

THey're a bugger on which to set up cantis!


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PostPosted: Wed Sep 25, 2013 5:33 pm 
Gold Trader
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Joined: Thu May 20, 2010 9:13 pm
Posts: 4833
Location: All you other Iron Men are just imitating
Cor I didn't know that :D Mine is a Team XC....so that makes sense. Looking at my RM17s by comparison they have a similar profile to the OPs pictures...again they are brand new.

FluffyChicken wrote:
Is it RM395-Team or RM395-TeamXC there is a difference, the later version (Team-XC) had a flat wall as pictured in the post above and the original version had Araya concave wall technology (and was a nicer and lighter rim)
They are tough as hell, I've rammed mine, worn mine and still they havn't gone.

I'd tide the top picture if it's a 'Team' and still do.

http://www.araya-kk.co.jp/rim/archive.htm


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PostPosted: Thu Sep 26, 2013 7:59 am 
Dirt Disciple

Joined: Thu Jul 07, 2011 12:16 pm
Posts: 55
Location: Moscow, Russia
Thank You Antstark ) If Yours are new and looks the same then it calms me ) I also tried to measure wear comparing the current weight of it (388gr) to the weightweenies site 403gr. But perhaps there is TeamXC quoted, and according to Araya Catalogue it's 410gr, not 395

I tried to measure wall thickness but it's very inconvenient to do it on such curvy surface and I'm unsure of accuracy of data I received - around 0,9mm


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