sicarumba
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| posted on 11/7/12 at 06:56 PM |
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MSVA and handbrake on a trike
Hi all
I have a quick question but it's quite specific, I tried searching everywhere but to no avail.
I just bought a Jaguar IRS setup which I plan on using in a V8 trike. The suspension is from a mk10 Jaguar and the handbrake on the mk10 only operated
on one caliper. My question is, will this pass the MSVA ? I have the MSVA manual which states the handbrake must operate "the wheels on one
axle". This suggests it should operate both wheels but it doesn't specify this. I don't want to go to the expense of buying
new calipers if these will be good enough, but then I don't want to go to the effort of cleaning and renovating these calipers if they are no
good. Does anyone know for sure?
Thanks in advance,
Simon
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scootz
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| posted on 11/7/12 at 07:00 PM |
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Hi Simon
If the two-wheels are on the same axle, then both need to be held by the HB.
It's Evolution Baby!
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sicarumba
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| posted on 11/7/12 at 07:14 PM |
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I was afraid you'd say that. But thanks for the quick reply!
So next question, as I understand it all Jag IRS differentials were the same (apart from some LSD inners), so can anyone tell me which marques used
the IRS setup and therefore which calipers are interchangeable with my now non-compliant ones? 
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scootz
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| posted on 11/7/12 at 07:19 PM |
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Just thinking... does the Jag axle have inboard calipers?
It's Evolution Baby!
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sicarumba
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| posted on 11/7/12 at 07:25 PM |
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Yes, mine certainly does. Having a quick look on some Wikipedia articles it seems there were several marques which used the same setup, including the
E-type and XJ6, but for all I know they may all have had single caliper handbrakes like mine!
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scootz
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| posted on 11/7/12 at 07:28 PM |
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In that case, it may be adjudged to be locking the diff... and therefore both wheels.
Give Chris at VOSA a ring (he deals with MSVA)... 01489 786162
It's Evolution Baby!
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jacko
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| posted on 11/7/12 at 07:28 PM |
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I may be wrong but i am sure the mk10 axle i had , had the hand brake on both discs
the cable pulled though the first caliper arm and on to the second if that makes sence to you
this may help you
http://carfixguru.com/servicing-jaguar-inboard-discs
[Edited on 11/7/12 by jacko]
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sicarumba
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| posted on 11/7/12 at 08:20 PM |
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Well I feel slightly foolish now 
I just went and checked the calipers and they do indeed both have a secondary pair of pads which operate via a cable. I must have misunderstood the
guy I collected them from yesterday when he said the mk10 handbrake lever only operated on one caliper.
So thank you both for the responses. The inboard discs website is now in my bookmark list for later reading. And I'll keep Chris' number
in my phone as I'm sure I'll think of more questions. I'm down the road from Southampton and my dad had his kit car IVA'd at
the Southampton test centre so he could prove useful
Thanks again, and sorry to have wasted anyone's time!
Regards,
Simon
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scootz
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| posted on 11/7/12 at 08:23 PM |
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No worries. 
It's Evolution Baby!
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jacko
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| posted on 11/7/12 at 08:36 PM |
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Happy building
Jacko
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mark chandler
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| posted on 11/7/12 at 08:53 PM |
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Tiny little pads and a PITA to change on the car.....
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trikerneil
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| posted on 11/7/12 at 09:19 PM |
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Jag IRS and a V8? how much will this all weigh?
I think there is a break point at 410kg at which point it becomes a car, or at least requires a Class 4 MOT at 450kgs
If this is the case do you then run into IVA?
Might be worth checking out.
HTH
Neil
ACE Cafe - Just say No.
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scootz
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| posted on 11/7/12 at 09:28 PM |
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quote:
Originally posted by trikerneil
Jag IRS and a V8? how much will this all weigh?
I think there is a break point at 410kg at which point it becomes a car, or at least requires a Class 4 MOT at 450kgs
If this is the case do you then run into IVA?
Might be worth checking out.
HTH
Neil
Nah. It must not exceed 1000kg unladen for a trike.
The 400Kg limit only applies to Heavy Quadricycles (Joyner buggies and the like).
It's Evolution Baby!
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sicarumba
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| posted on 12/7/12 at 07:51 AM |
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quote:
Originally posted by trikerneil
Jag IRS and a V8? how much will this all weigh?
I think there is a break point at 410kg at which point it becomes a car, or at least requires a Class 4 MOT at 450kgs
If this is the case do you then run into IVA?
Might be worth checking out.
HTH
Neil
Hi Neil
Yes it'll be a weighty old beast. Good job I already have a motorbike to scratch the performance itch, as this will be for low speed burbling
only!
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trikerneil
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| posted on 12/7/12 at 04:05 PM |
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MOT test fees LINKY is what made me wonder.
Class 4 - includes "3 wheeled vehicles (over 450 kg unladen weight)"
Neil
ACE Cafe - Just say No.
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sicarumba
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| posted on 13/7/12 at 08:04 AM |
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quote:
Originally posted by trikerneil
MOT test fees LINKY is what made me wonder.
Class 4 - includes "3 wheeled vehicles (over 450 kg unladen weight)"
Neil
Interesting. Looks like it'll be within the weight limits for a trike at MSVA but will be a more stringent (and more expensive of course) MOT
test after 3 years of ownership. I suppose it's wishful thinking the MOT test won't fail me on something which is accepted by the MSVA but
I guess I'll find out. I have the small matter of building the thing first!
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