907
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posted on 26/6/15 at 08:22 AM |
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^^^^^
+1
I push my car out of the garage rather than fill it with fumes.
I have one hand Pulling on the roll bar while the other hand is pushing on the steering wheel. (Momo Race)
I often run over my foot though.
Paul G
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jeffw
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posted on 26/6/15 at 08:28 AM |
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quote: Originally posted by 907
I often run over my foot though.
Paul G
made me smile....been there done that
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907
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posted on 26/6/15 at 10:20 AM |
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quote: Originally posted by jeffw
quote: Originally posted by 907
I often run over my foot though.
Paul G
made me smile....been there done that
When I did the corner weights I made sure that wheel was the lightest. ![](/images//smilies/wink.gif)
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RickRick
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posted on 26/6/15 at 10:25 AM |
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If you have paddle shifts fitted like me each gear shift is pulling the paddle and the wheel together not a huge load but repeated many times
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Grimsdale
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posted on 26/6/15 at 11:14 AM |
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quote: Originally posted by russbost
I can honestly say we've been selling the RMD "D" shaped wheel for probably at least 5 years now - the above failure is the first
I've been told of that we have sold - until a broken wheel has been examined by a metallurgist (which I most certainly am not) you can only
speculate with regard to the actual CAUSE of the failure
I'm a metallurgist specialising in failure analysis, so if I can be of any help, let me know. I've had a very brief look at an intact rmd
steering wheel, and it was very soft (~40HV). I'd be amazed if the failure was anything other than fatigue due to insufficient strength.
Andy
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MikeRJ
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posted on 26/6/15 at 11:39 AM |
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quote: Originally posted by russbost
If anyone thinks I'm being daft here please point me in the right direction? I would say it would be impossible to fracture a spoke with a
torque applied around the centre even if you're a body builder & you jam the steering against the lock stops, however work it back &
forth in a forward/backward motion for long enough & a fracture is almost inevitable, irrelevant of the manufacturer of the wheel ................
How many other manufactures wheels ( e.g. Momo, Mountney etc) have been reported as having failed on here or on the RH forums? If a score has been
made in the metal where the suede covering is trimmed, a fatigue failure has pretty much been manufactured into the wheel.
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Davey D
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posted on 26/6/15 at 01:56 PM |
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Here are some pics of the steering wheel showing where it has gone
![](http://i.imgur.com/JT0GZ8j.jpg)
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BangedupTiger
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posted on 26/6/15 at 02:10 PM |
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![](http://i1003.photobucket.com/albums/af158/aceofruss/Sale/1C500762-BBBE-4FA0-BC9E-5A2FFAF98ACC_zpssf5kiqj9.jpg)
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Sam_68
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posted on 26/6/15 at 02:12 PM |
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I'm NOT a metallurgist, so Grimsdale may tell me I'm talking absolute nonsense, but since it's fractured at a score-line for the
suede covering, is it possible that it's suffered a fatigue failure, starting from the stress raiser of the score line, because the mass of the
rim was vibrating at high frequency (possibly hitting a critical frequency)?
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Digimon
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posted on 26/6/15 at 02:47 PM |
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Do you have any vernier calipers to measure thickness of the material?
I'd really like to know because I will be binning mine for a Momo replacement if the new wheels are also faulty
[Edited on 26/6/15 by Digimon]
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40inches
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posted on 26/6/15 at 03:14 PM |
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Just checked mine. Purchased from Rally Design at Stoneleigh 2014 (Show Offer).
All three spokes are scored on both sides , but they are 5mm thick
Still not sure what to do .
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Davey D
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posted on 26/6/15 at 03:28 PM |
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Just checked and mine is 4mm thick
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Digimon
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posted on 26/6/15 at 03:33 PM |
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That maybe one of the old batch only being 4mm
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leon51274
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posted on 26/6/15 at 03:38 PM |
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Just checked mine and its 4mm
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alex1991
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posted on 26/6/15 at 04:00 PM |
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Just measured mine with vernier calipers and it's 5mm thick.
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BangedupTiger
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posted on 26/6/15 at 04:37 PM |
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If it's going to snap at 4mm, it'll snap at 5mm. Thickness isn't the important factor. Just chuck the pieces of poo in the bin.
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