donut
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 posted on 29/9/05 at 05:08 PM |
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Tacho and SVA?
Is there any requirement to have a tacho for SVA? The only reason i can think of is when they test the sound level and they ask you to go to 6,500 rpm
(or whatever) but if you have no tacho then how will they know where to take the db level from?
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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dave r
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| posted on 29/9/05 at 05:30 PM |
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one of the first things he did on my test was to check the accuracy of my tacho.
he did thes with some gizmo stuck on the rocker cover?
guess if you aint got one or it dont read right he would use the same toy
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donut
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| posted on 29/9/05 at 05:36 PM |
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quote:
the first things he did on my test was to check the accuracy of my tacho
I never had this at my 1st SVA??? How weird!!
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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mookaloid
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| posted on 29/9/05 at 06:17 PM |
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first I've heard of it too
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shortie
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| posted on 29/9/05 at 06:54 PM |
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Andy,
It's the first thing Michael did on mine at Mitcham aswell, I asked what it was and he said it tests the tacho is correct so he knows that he is
testing the revs right.
I seem to remember it was a clip on the HT leads.
Rich.
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donut
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| posted on 29/9/05 at 07:05 PM |
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so will i need to fit a tacho for sva? i'm thinking of not bothering....
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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Aboardman
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| posted on 29/9/05 at 08:07 PM |
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had a quick look through my sva manual and the only thing according to that is a speedo and the warning lights.
and i am sure that some cars do not come with a tacho so why should you.
regards
Andrew
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caber
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| posted on 29/9/05 at 08:14 PM |
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My auto electrical meter provides a tachometer setting connected to the coil, it also does dwell from the same connection. It was a cheapish one
bought from Halfrauds and has been in valuable.
Caber 
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donut
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| posted on 29/9/05 at 08:46 PM |
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I guess they will put their meter on my car when doing the noise test and tell me when to stop revving up.
Cool, thanks guy's
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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Grahame L
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| posted on 2/10/05 at 01:40 PM |
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Andy, if you're worried regd noise level then apparently as you are the designer of the car you state at what revs your engine is designed to
give full power. When I applied for the sva I stated max power revs of 5750 so at sva they will estimate 75% of that. Although my tacho shows 11,500
as red line I will argue I didn't design the car for those kind of revs therefore should pass noise level easily!! By the way haven't had
sva yet so heres hoping but been reliably informed it should!!
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Peteff
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| posted on 2/10/05 at 02:20 PM |
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Sorry Grahame.
They will tell you what they are testing it at. They are not idiots and know what revs you will be using. They tested my pinto at 4,000rpm which is
roughly 2/3 of the maximum safe rev range. You may have designed the car but you didn't design the engine.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Grahame L
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| posted on 2/10/05 at 04:44 PM |
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Well I'm going to give it a try anyway Pete as I know of people who have done this. If I were the tester I know that I am taking the p-- s but
if there is a shortcut I will go for it!! Plus I know that my exhaust will not pass the noise test so will have to give it a try. By the way did you
state the max power revs on your sva application?
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Peteff
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| posted on 2/10/05 at 05:40 PM |
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I put it at 5,000rpm for the same reason you did. It passed at 98db anyway but I was doubtful as it sounded loud.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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donut
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| posted on 2/10/05 at 07:50 PM |
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I think you would be hard pushed to get a std pinto with MK exhaust over the db limit at SVA. My last Sva was 94db i think.
Andy
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
http://www.flickr.com/photos/andywest1/
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Peteff
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| posted on 2/10/05 at 08:13 PM |
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It was a home made silencer before MK were doing stuff like that. It was before MK opened at Langold and Martin was still doing Locost chassis from
home.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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oliwb
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| posted on 30/10/05 at 10:35 AM |
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|I'm in agreement with snoopy, talk on the Tiger forum suggests that most people say max power is about 4,500 rpm on their
pinto's.....although this is untrue and the inspectors probably know it theres no way then can make you rev it more cos you've told them
that its unsafe to do so....they wouldn't be aloud to risk an engine going bang! Oli.
If your not living life on the edge you're taking up too much room!
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keith2lp
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| posted on 30/10/05 at 12:37 PM |
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Tacho
Hi
At my SVA he tested the tacho for accuracy so he could use it for the noise test. If it is not correct they will use their own.
Mine tested to within 100 RPM at 4000 so he used that.
I used the max power figure for the pinto from the haynes manual @ 5200 rpm and he tested the noise at 3900 rpm.
As has already been said the guys are not stupid so dont lie.
Keith
[Edited on 30/10/05 by keith2lp]
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