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KevG
Super Moderator
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Posted: Wed Jun 25th, 2008 06:41 pm |
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Nicknac. you Said: Quote;
"If the station was only a bike station they would know the score, its always the ones that do both that are the problem."
My VTS does bikes and cars in Manchester. I am an AE and the NT on Both classes.
Thats a rather sweeping statement isn't it?
"ALWAYS" the problem?
Can you tell me why that is? And how it applies to my VTS in your opinion?
I have over 22 yrs experience on Bike tests alone.
Plus over 10years on class 4 and 7.
Be careful what you say. You may be costing your Friends on this site business!
Please amend your statement, the jobs hard enough without bad publicity from your own side!
Kev
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cbr65
Member
| Joined: | Wed Jun 25th, 2008 |
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| Posts: | 9 |
| Mana: |  |
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Posted: Wed Jun 25th, 2008 06:01 pm |
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Yep, I've learned that lesson. Just dropped back to the chap who fitted them in the first place. He showed me two other bikes in the workshop with similar brembo setups and they all had the same degree of lateral movement, none more than 3 mms. He also did MOTs, so guess where I'll be going from now on  He also explained the appeals system and how the test station were likely to 'review' the situation if I said I was going to appeal
I called back to the test station to retrieve a paperback I left there yesterday (I was so shocked the bike failed I'd have left my head if it weren't screwed on) and dropped not so suble hints that I was going to appeal it. The gaffer asked me to drop back after lunch to 'take another look'
So fingers crossed common sense will prevail. I'd rather not hike all the way to edmunton if I can avoid it.
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nicknak
Trade Member
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Posted: Wed Jun 25th, 2008 05:08 pm |
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| If the station was only a bike station they would know the score, its always the ones that do both that are the problem.
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Stealth
Member
| Joined: | Wed Oct 31st, 2007 |
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| Posts: | 132 |
| Mana: |  |
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Posted: Wed Jun 25th, 2008 03:17 pm |
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Hi cbr65
Here's the extract from the Motorcycle testers manual - Section 3.2 - Brake systems.
The information column states :-
Fully floating brake discs are designed to have some movement. Care must be taken to not unnecessarily fail these items for security.
As long as there is no rotational movement, indicating worn disc carrier bobbins, then it should be a pass. The discs are designed to 'float' on the bobbins to allow for heat expansion & contraction & reduce excessive heat transfer to the disc hub.
Likewise the brake lever travel - as long as there's no 'sponginess' or creep at the brake lever, and it's not coming right back to the bars, then a pass would be appropriate.
There are two ways to approach this - first is to return to the VTS and ask the tester to check the manual, second is to contact VOSA for an appeal examination.
I would suggest option two. Any fees should be returned if the appeal is found in your favour.
Last edited on Wed Jun 25th, 2008 03:23 pm by Stealth
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cbr65
Member
| Joined: | Wed Jun 25th, 2008 |
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| Posts: | 9 |
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Posted: Wed Jun 25th, 2008 02:57 pm |
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Thanks nicknak
Yes, the movement is purely in the lateral plane, ie left to right when looking at the disc from the seated position. there is no play radially or rotationally.
I'm off to the garage which fitted them in a few mins to see what they say. It does sound like the examiner may have been having a bad day. Yes they also do cars, is it different for them ??
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nicknak
Trade Member
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Posted: Wed Jun 25th, 2008 02:50 pm |
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Is the float side to side, to me thats what you are saying? 2-3 side to side is ok. not usual on a Honda though, is there any back and forwards ie: the way the wheel goes or any up and down? if not sounds like the n/t got it wrong.
I take it they do cars as well then? Go for the appeal you will get your money back if its ok.
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cbr65
Member
| Joined: | Wed Jun 25th, 2008 |
| Location: | |
| Posts: | 9 |
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Posted: Wed Jun 25th, 2008 12:11 pm |
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I submitted my 3yo CBR600RR for its first MOT yesterday and was shocked to receive a fail.
It was failed on three points, namely
3.1.3b Brake lever travel
3.2.a1 Nearside front brake compnent worn and seriously reduced in strength
3.2.a1 Offside front brake compnent worn and seriously reduced in strength
Now the bike in question had the stock front discs replaced late last year due to warping, and the disc to my mind have always had the same degree of lateral movement since then so its hardly worn. The front pads are the same as when the new discs were fitted and I had the calipers off a few weeks back to ensure that there was still plenty of 'meat' on them.
The brake level was set at the closest adjestment to the bar as I only have small hands, I did show the examiner that if you adjusted it back to the maximum setting you couldn't touch the level to bar even when using both hands but he seemed disinclined to listen !!
So, where do I go from here. I can contact the garage that fitted the brembos and see what they say, but I'd like to ask the members on here if a certain degree of lateral disc movement under braking is normal (I'm not a mechanic myself, but I thought that was the whole point of floating discs in the first place!) but the examiner insisted that this wasn't normal even for floating discs. (FYI the degree of movement was approx 2-3mm)
I'm tempted to appeal the fail through the VOSA appeals scheme, but I'd appreciate any advice you could offer.
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