1986 944 Turbo 1-Owner, 38K Miles, Bone Stock, Perfect, $15K
11-02-2011, 03:46 PM
#61
Burning Brakes
Join Date: Mar 2006
Location: Orlando,FL (formerly UK)
Posts: 1,215
Likes: 0
Received 0 Likes
on
0 Posts
Finger prints... well that's definitely a 'tell'!
Not defensive, but definitely keen to explain that digits to the right of an 8 or a 9 sitting 'high in the saddle' are perfectly normal, and do not indicate meddling.
Just thinking for a moment, all my cars since the 1980's have been VW/Audi/Porsche, and I've had to work on several that had odometer issues... The Mk1 for example had the plastic 'press-on' cog which expands when it's warm, meaning that odometer works in the morning when it's cold (after an evening in the garage), but doesn't work in the evening after the car's been sitting in the sunshine all day, with the interior heating up. (the cog expands, and 'slips' on the shaft which it's supposed to turn. -Took me ages to figure it out, then ten cent's worth of loctite blue fixed it forever)
But watching them turn over, it becomes clear to see how they 'nudge' the digit to their left before and after the roll over.
I need less caffeine!
Not defensive, but definitely keen to explain that digits to the right of an 8 or a 9 sitting 'high in the saddle' are perfectly normal, and do not indicate meddling.
Just thinking for a moment, all my cars since the 1980's have been VW/Audi/Porsche, and I've had to work on several that had odometer issues... The Mk1 for example had the plastic 'press-on' cog which expands when it's warm, meaning that odometer works in the morning when it's cold (after an evening in the garage), but doesn't work in the evening after the car's been sitting in the sunshine all day, with the interior heating up. (the cog expands, and 'slips' on the shaft which it's supposed to turn. -Took me ages to figure it out, then ten cent's worth of loctite blue fixed it forever)
But watching them turn over, it becomes clear to see how they 'nudge' the digit to their left before and after the roll over.
I need less caffeine!
11-02-2011, 03:59 PM
#62
Drifting
I'd agree when the 9 is in place the digit to the left will start to rise, not so sure about that happening with the 8. My first post was baiting the swim a little, a lot of little fishes were soon in the net 
.
11-02-2011, 04:12 PM
#63
Burning Brakes
Join Date: Mar 2006
Location: Orlando,FL (formerly UK)
Posts: 1,215
Likes: 0
Received 0 Likes
on
0 Posts
It definitely begins its slight 'creep' at eight.
The white 'gears' which freely rotate on the secondary polished shaft along the front (and down below the 'window') has two different sets of 'paddles' on it. -One is a full 'cog' which turns the teeth on the gear of the 'prayer wheel' to the left (having a full set of 'cog teeth) and the other side has (usually three) 'paddles' which "catch" the single "bump" from the wheel to the right.
It's an 'escapement mechanism' a little like a clock... The way it all works is that the 'button' (think of it like the bump of a cam) falls between two of the three 'paddles'. As it passes through 'zero', it pushes the button through the 'centre' of the escapement, and turns the wheel by a defined amount (36 degrees, or one-tenth of a revolution). Having passed through the escapement, it then exerts no further 'drive' on the white idler wheel, and keeps 'counting' without turning the digit to its left.
I don't know why VDO aren't made with the same level of precision which other mechanical counters, but I thnk what happens is that when you get to number [8], the button is just ever-so-slightly making contact with the first paddle. At [9] it enters the escapement, at [0] it REMAINS in the escapement and turns the next wheel with it. At [1] it leaves the escapement, but continues to turn the neighbouring dial the final 'creep'.
If I get a 180MPH speedo from Lart, I'll strip it down and show how all the magic happens!
Paging Lart!
As for 'baiting the swim', I just want to see this car go to a good home. -there aren't ALL that many low-mileage garage queens left these days. -Fewer every day.
The white 'gears' which freely rotate on the secondary polished shaft along the front (and down below the 'window') has two different sets of 'paddles' on it. -One is a full 'cog' which turns the teeth on the gear of the 'prayer wheel' to the left (having a full set of 'cog teeth) and the other side has (usually three) 'paddles' which "catch" the single "bump" from the wheel to the right.
It's an 'escapement mechanism' a little like a clock... The way it all works is that the 'button' (think of it like the bump of a cam) falls between two of the three 'paddles'. As it passes through 'zero', it pushes the button through the 'centre' of the escapement, and turns the wheel by a defined amount (36 degrees, or one-tenth of a revolution). Having passed through the escapement, it then exerts no further 'drive' on the white idler wheel, and keeps 'counting' without turning the digit to its left.
I don't know why VDO aren't made with the same level of precision which other mechanical counters, but I thnk what happens is that when you get to number [8], the button is just ever-so-slightly making contact with the first paddle. At [9] it enters the escapement, at [0] it REMAINS in the escapement and turns the next wheel with it. At [1] it leaves the escapement, but continues to turn the neighbouring dial the final 'creep'.
If I get a 180MPH speedo from Lart, I'll strip it down and show how all the magic happens!
Paging Lart!
As for 'baiting the swim', I just want to see this car go to a good home. -there aren't ALL that many low-mileage garage queens left these days. -Fewer every day.
11-02-2011, 08:19 PM
#64
Racer
Thread Starter
Join Date: Sep 2007
Location: Woodstock, GA
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
That darn pesky 3 seems to be wanting to rise for some manipulative reason.
The large impotent one...Lart sure is a silly guy
11-02-2011, 09:47 PM
#65
Burning Brakes
Join Date: Mar 2006
Location: Orlando,FL (formerly UK)
Posts: 1,215
Likes: 0
Received 0 Likes
on
0 Posts
Damn... That photo shows -if nothing else- the sheer lack of scratches on the clear Lexan (or whate ver the clear plastic is) cover...
That's a detail that NOBODY would think about faking.
That's a detail that NOBODY would think about faking.
11-02-2011, 09:53 PM
#66
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
11-02-2011, 10:24 PM
#67
Drifting
.As for the Lart comment, dont you know not to mess with a crazy man
11-02-2011, 10:29 PM
#68
Drifting
11-02-2011, 10:48 PM
#69
Racer
Thread Starter
Join Date: Sep 2007
Location: Woodstock, GA
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
11-02-2011, 10:53 PM
#70
Racer
Thread Starter
Join Date: Sep 2007
Location: Woodstock, GA
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
11-03-2011, 09:04 AM
#71
Burning Brakes
Join Date: Mar 2006
Location: Orlando,FL (formerly UK)
Posts: 1,215
Likes: 0
Received 0 Likes
on
0 Posts
