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New computerised MOT's

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KevTM
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PostPosted: 22:35 - 19 May 2006    Post subject: New computerised MOT's Reply with quote

Well got the old bandit MOT'd the other day but i couldn' believe it when he first of all weighed the bike, then asked ME to go on the scales to be weighed, i was like "aye right".. but he was serious Laughing

about weighing the bike + rider! why? the bikes getting an MOT, not me?! Rolling Eyes or is it for some sort of braking distance calculation or something? ..

plus if i sold the bike would the MOT be invalid since the new rider would be a different weight and therefore be a different stopping distance!? Laughing crazy fools..

maybe it's juts me,

why weigh the rider?
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Nb
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PostPosted: 22:42 - 19 May 2006    Post subject: Reply with quote

I do car mots not bikes but i would think it would be because the tester has to calculate the braking efficiencies, or rather the computer does and the weight is in the equation. But sometimes the computer doesnt have the specific model so they go on what they see.
So in order to calculate your bikes brakes efficiency he needs the weight.
Total brake effort x 100 = % Efficiency
DesignGrossWeight

Not sure why he couldnt sit on it and work it out though...are you 20 stone or something. Laughing
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KevTM
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PostPosted: 22:47 - 19 May 2006    Post subject: Reply with quote

71kg's apparently..

i see, tiz an old bike though, an import 400 so that makes sense i suppose.

thought he was taking the p*ss when he asked me to stand on them. Laughing
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carvell
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PostPosted: 00:03 - 20 May 2006    Post subject: Reply with quote

I never had to stand on a thing and be weighed!

You must be either really fat or really thin!
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McJamweasel
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PostPosted: 00:08 - 20 May 2006    Post subject: Reply with quote

It is so that the braking efficiency can be worked out, although really it should be the tester that was weighed as it would of been him on the bike when he did the braking force test.
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TOM M
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PostPosted: 00:36 - 20 May 2006    Post subject: Reply with quote

Does every station have to weigh them?? Or is it the select few
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McGee
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PostPosted: 00:55 - 20 May 2006    Post subject: Reply with quote

*Plans to send skinny friend to mot bike.*
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KevTM
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PostPosted: 09:20 - 20 May 2006    Post subject: Reply with quote

i'm quite light me, the scales were a tad out as i'm just under 10 stone Mr. Green . I was the one on the bike when he was doing the braking force test.. anywhooz
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McJamweasel
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PostPosted: 20:41 - 20 May 2006    Post subject: Reply with quote

The weighing thing is part of the test, so yes, all stations should do it. However, depending on the method of tetsing the braking force it may not be necessary. On a roller brake tester, if the wheel locks then has passed, you don't need to work out the efficiency and so you don't need the weight.

Quote:
I was the one on the bike when he was doing the braking force test


How did he do the test. It should really of been the tester on the bike as it is him that needs to make the decision on the performance (and feel of the controls does come into this).
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KevTM
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PostPosted: 09:25 - 21 May 2006    Post subject: Reply with quote

he was using an old school method by the looks of it.. had a harness round the front forks which got pulled by by cable by some sort of analog scale .. so he had to operate that whilst i sat on the bike.
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ram_doom
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PostPosted: 10:17 - 21 May 2006    Post subject: Reply with quote

Was at my friendlyish local bike shop yesterday and they were using bathroom scales to weigh bike and rider at the same time Shocked how the feck did that work? They could only do one wheel at a time Very Happy
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Walloper
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PostPosted: 22:17 - 21 May 2006    Post subject: Reply with quote

April Fool time again.....
What if you then sell the bike? Shocked Shocked
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0ddball
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PostPosted: 03:29 - 22 May 2006    Post subject: Reply with quote

ram_doom wrote:
Was at my friendlyish local bike shop yesterday and they were using bathroom scales to weigh bike and rider at the same time Shocked how the feck did that work? They could only do one wheel at a time Very Happy


Weigh one end then the other and add them together. Of course the rider would have to sit in exactly the same position for both measurements to keep the c.o.g in the same place.
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stinkwheel
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PostPosted: 18:27 - 22 May 2006    Post subject: Reply with quote

It would appear that the test should be done on the weight of the bike plus tester according to the testing manual. This seems fucking stupid as a lighter rider is more likely to pass the braking test. Hardly an objective test.

By implication, if your bike has iffy brakes and a fat bastard comes out to do your MOT, demand someone thinner or take it somewhere else.

Also, it would seem a bike could JUST fail its brake test then pass it five minutes later by making the tester take his steelies off, with the brakes being dangerous before he did this and safe after.

Maybe this is why the guy weighed you rather than himself on the bike, was he a right salad dodger?
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Barry_M2
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PostPosted: 18:57 - 22 May 2006    Post subject: Reply with quote

I took my ZXR for an MOT this morning (which it passed).

He weighed the bike, but not me. Thumbs Up
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Teaman
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PostPosted: 19:21 - 22 May 2006    Post subject: Reply with quote

so , what if you have stupidly large panniers on it but not on and also a tank full of petrol?


what a load of shite,

think its a ploy to get people to make sure they have road worthy bikes?
there mad, more likely to be more people riding around with no MOT's
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McJamweasel
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PostPosted: 21:07 - 22 May 2006    Post subject: Reply with quote

stinkwheel wrote:
It would appear that the test should be done on the weight of the bike plus tester according to the testing manual. This seems fucking stupid as a lighter rider is more likely to pass the braking test. Hardly an objective test.

By implication, if your bike has iffy brakes and a fat bastard comes out to do your MOT, demand someone thinner or take it somewhere else.


Actually, it works the other way around on the roller brake testers - the heavier the bike/ride the more braking force you get before it locks out. I'm about 11st, the other tester in our place is about 14st and he generally gets a good 10kgf of braking force more than I do.
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Walloper
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PostPosted: 23:06 - 22 May 2006    Post subject: Reply with quote

https://www.ukmot.com/bike/3-3.asp

Go to a proper garage. One where flip's mates don't work. Laughing
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Sephiroth
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PostPosted: 23:08 - 22 May 2006    Post subject: Reply with quote

Flip's mates

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owdamer
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PostPosted: 23:36 - 23 May 2006    Post subject: Reply with quote

I had my bike mot's a couple of weeks ago. They used electronic scales & weighed the front and back wheels. Not the rider. I think its something to do with working out the weight distribution. I'm pretty sure he had to enter the weights onto the computer when he was filling in all the details. I'm not sure what the procedure is for the brake test as he didn't do mine. The only check he made was that my bearings were ok & my brakes wern't binding.....He's an old mate so he knows the bikes ok other than a race can... Very Happy
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cheekie monkey
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PostPosted: 23:42 - 23 May 2006    Post subject: Reply with quote

Well that surely goes all out of the window if you have someone on the bike with you when your riding? Confused
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