Lightning
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| posted on 11/6/04 at 07:40 PM |
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6 days to SVA and speedo u/s
Nead quick fix for a speedo.
Was using a push bike one that was OK up to 40 mph. The reason was that I mounted it on the prop and over that speed it was turning too quick.
The obvious answer was to mount it off a wheel or on the drive shaft....too short a lead.... apparently not wires...looks like fibre optics?
Now no speedo
Hellfire you were going to use speedo of a push bike untill you sorted yours, which one, where and how?
Any other quick ideas? Dont have much space on the dash.
Steve
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Hellfire
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| posted on 11/6/04 at 09:03 PM |
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Aaagh - we we're told it was fibreoptic, it's rubbish!
Is it the Cynetic (or similar model) if so the wire is co-axial (like ours) and can be cut and extended.
You need it illuminating for SVA from the front with no visible light evident from the back.
If it is driven from the rear wheels you're ok. However, from the front wheel you also need a Certificate of Calibration verifying it is
accurate to 100+ mph. At Beverley they will not pass it without a valid independant Certificate (or so he told us) apparently they have closed this
loophole due to the SVA not being able to check the speed accuracy on the NONE DRIVEN rollers.
To summarise:
Chop the cable extend it.
Place pickup from rear wheels.
Illuminate it.
Should pass...
Course not all SVA Centres work to exactly the same rules.
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Peteff
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| posted on 11/6/04 at 09:46 PM |
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If it reads from a magnet its a wire. We used a cheap Sigma years ago extended with speaker wire and stuck a fridge magnet to the inside of the rear
rim with JB Weld, mounted the sensor on a bar from the shock bracket and it was deadly accurate with the circumference of the tyre dialled in. It was
lit by a Sierra numberplate light shining on it from the top of the steering column.
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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Lightning
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| posted on 11/6/04 at 10:24 PM |
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No its a halfords one and there are two cables that each have a fibre type filament. On the ones both of you had were the filaments wire. If not how
could you join on new wire?
I will probably go out tomorrow am and buy a different one. What model Hellfire did you use?
BTW I asked at the SVA centre and he said if it was illuminated it should pass. I have a white LED which i drilled into the casing for the present
speedo.
[Edited on 11/6/04 by Lightning]
Steve
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Hellfire
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| posted on 12/6/04 at 10:09 AM |
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If the clock u have has two wires of filament type then thats strange as optical only uses one! My Minidisc to CD uses optical and only uses one...
However, the model we used was from Halfords - VDO Cytec C10 Cycle Computer and was £19.99. He had to go into the back for it as it wasn't
displayed. It's a nice piece of kit actually, even tho' we have the original 'blade clocks on we still use it for trip, max speed
and clock! Plus as already stated it is deadly accurate.
Using this model I cut the wire (co-axial) and extended. The wires are very thin and I put some thin speaker wire in soldered up to ensure
connectivity. Make sure the sender is mounted close to the magnet as it sometimes miss's. Ideally 2~3mm.
Never had a problem with it...
IIRC we also have the Certificate too - send us your address and we'll post it down. I'll also scan it and put it online for you should
you not receive it.
[Edited on 12-6-04 by Hellfire]
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spunky
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| posted on 12/6/04 at 10:21 AM |
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Halfords sell a wireless version, worth a look. If the range is too short, just take it back...
John
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tr
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| posted on 12/6/04 at 02:08 PM |
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Be warned the wireless ones are bobbins. A friend of mine had a CatEye one on his puch bike and it was always dropping out and displaying 00.00 or
99.99. Costs a fair bit more than a wired one too. I've got a Sigma Targa (No longer produced but still available at most bike shops)
It's got a nice metal case, thicker than average cable and it's accurate upto 180+ mph.
tr
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Hellfire
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| posted on 12/6/04 at 04:09 PM |
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If you have no Certificate and they cant check it to a realistic speed - it'll fail. So we were told.
We had to run at 30, 50 and 70mph to check for accuracy.
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spunky
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| posted on 12/6/04 at 07:53 PM |
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FWIW. I had to tweak my speedo during SVA. Andy the inspector said if it was reading from the front wheels he couldn't check it so it would
pass...
A very nice man.
John
At Nottingham test station that is....
[Edited on 12/6/04 by spunky]
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Hellfire
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| posted on 12/6/04 at 09:44 PM |
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quote:
Originally posted by spunky
FWIW. I had to tweak my speedo during SVA. Andy the inspector said if it was reading from the front wheels he couldn't check it so it would
pass...
A very nice man.
John
At Nottingham test station that is....
[Edited on 12/6/04 by spunky]
WHERE'S THE CONSISTANCY!!!!!!!
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Lightning
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| posted on 13/6/04 at 10:52 PM |
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I bought the same speedo as Hellfire and extended the wires. Put the magnet on the drive shaft and mounted the sensor off of the diff.
Works well and much clearer LCD than the Halfords own.
Have lit it with a LED mounted on the brackettry for the paddle change, again works well.
Note to others though , don't use the Halfords own as the cable is fibre optic as demonsrtated by me when cutting it.
Thanks for the offer of the certificate. I'll see if it passes first.
BTW I'm using Fireblade mirrors that don't appear to have E marks. Hellfire did you do the same and did yours have marks?
Steve
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scotlad
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| posted on 14/6/04 at 10:26 AM |
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My Blade mirrors passed no probs- my tester didnt check if they had emarks- just as well as they didn't!
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Hellfire
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| posted on 14/6/04 at 10:48 AM |
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I'm sure they are e-marked somewhere on the plastic housing, although I can't remember the inspector checking them too closely.
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