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Author Topic: Ribbon speedo  (Read 506 times)
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lancialulu
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« on: 05 May, 2017, 04:28:24 PM »

I have opened my speedo up as it was under reading badly and the trip meter was not working (drive was seized - now repaired).

I noted the red ribbon round its drum was sticky on the underside, and the plastic drum was also sticky (from the ribbon). I cleaned the drum, and tried to clean the back of the ribbon with toluene but it remained sticky....

I wondered when Veglia (back in the day) made these ribbon speedos whether they invented a permanently sticky (akin to post-it note stickyness - not yet invented!!) ribbon to act as some sort of damping.

Can anyone tell me if they have done an autopsy on their Flavia speedo?Huh?
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia HFR
1972 1600 HF
1972 1600 Fulvia Sport
1978 Transformer HF3000 Strato's replica
1979 2500 Gamma Coupe
1988 Delta 1.6GTi.e.
lancialulu
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« Reply #1 on: 06 May, 2017, 10:10:26 AM »

Update.

After putting it back together and bench testing I was not happy with the continuing stickiness of the red part of the ribbon on its drum. It caused the speedo to delay reading and under read.

So apart again. Not for the faint-hearted. Take plenty of photos (I did not before the mechanism of string and wheels came undone by accident!!).

I tried toluene (panel wipe) again but the stickiness remained. I tried Iso-propol alcohol and that did the trick albeit some (little) of the red came off. When dry the ribbon was no longer sticky.

Then working out how to re-assemble..... which was achieved (sorry no photos).

Bench tested and now have a smooth speedo .

The trip meter had seized on its driving gear which has snapped the minute alloy drive shaft from the odometer. I sleeved the original drive shaft and reconnected the two having freed off the trip driving gear (WD40 and 3in1 oil). Now works a treat.
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia HFR
1972 1600 HF
1972 1600 Fulvia Sport
1978 Transformer HF3000 Strato's replica
1979 2500 Gamma Coupe
1988 Delta 1.6GTi.e.
simonandjuliet
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« Reply #2 on: 06 May, 2017, 12:07:14 PM »

Sounds like a fun kitchen table job - and very satisfying result
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S1 Aprilia Cabrio, S2 Aprilia, S1 Promiscuo,S2 camioncino, S2 furgoncino, S3 Appia, R4 Sinpar, R4 Rodeo, R60 Tractor, Moto Guzzi Ercole, Disco 3, Mini ALL4 JCW, Moto Guzzi Cardellino 73,Fulvia Berlina GT, Fulvia Rallye S, Fulvia 1600 HF,
lancialulu
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« Reply #3 on: 06 May, 2017, 03:00:45 PM »

Actually I am not allowed to use the kitchen table for car stuff so the garage floor had to do!!!

Proved just now - so nice to see how fast this Vignale goes. I can confirm Colin Marr's earlier experience of 20 mph/1000 rpm in 4th is very fast at 2/3rds redline
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia HFR
1972 1600 HF
1972 1600 Fulvia Sport
1978 Transformer HF3000 Strato's replica
1979 2500 Gamma Coupe
1988 Delta 1.6GTi.e.
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