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Post by Dixie Dean on Apr 13, 2021 20:48:35 GMT 1
Help please unable to get my Speedo working. The Speedo works by twisting the cable while attached to the Speedo with my fingers but not when attached to the wheel. Attach cable just to Speedo drive in wheel and it works new cable from n’ornons. Help please.
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Post by midlifecrisisrd on Apr 13, 2021 20:51:32 GMT 1
You do have the drive tab bit fitted in the wheel
Steve
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Post by Dixie Dean on Apr 13, 2021 20:56:02 GMT 1
Yes mate if I attach cable to Speedo drive at the wheel and spin the wheel the cable turns
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Post by shaunthe2nd on Apr 13, 2021 21:08:30 GMT 1
You doing well if you can get your speedo working by your fingers.
I have to use a drill in reverse at fast speed and then it only goes up to 27mph without using a special adaptor I have.
So my question is, does it actually work at all or is it just twitching?
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Post by Dixie Dean on Apr 13, 2021 21:22:02 GMT 1
If I attach the cable to the Speedo and spin the cable with my fingers the Speedo works and the trip works
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Post by LC_BOTT on Apr 13, 2021 21:29:58 GMT 1
Are you lining up the wheel drive correctly to the speedo drive? They are a bit tricky, and either get bent or squashed sometimes. Isn't the LC2 drive like a tube rather than small tangs, ie a bit harder to get wrong?
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Post by mouse on Apr 13, 2021 21:30:58 GMT 1
Is the cable genuine or pattern?
If it is a pattern one it may be too short, i have had this prob, it works fine when only connected at one end but it could be too short to attach at both ends at the same time.
Mouse
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Post by Dixie Dean on Apr 13, 2021 21:35:46 GMT 1
The cable is from norbo
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Post by shaunthe2nd on Apr 13, 2021 21:38:01 GMT 1
The trip and odo is directly geared, and will advance as you turn the cable anti-clockwise, although you would have to go some with your fingers to see it advance.
The cable also rotates a magnet which then indirectly moves the speedo needle.
It has to spin quite fast to register on the speedo dial hence my previous comment as its difficult to turn the cable connector fast enough with your fingers to see it work.
If you are sure the speedo works then it has to be either the cable or the front wheel drive.
Does the cable sit correct at both ends? Are either of the square shafts at either end been rounded off? Is there a split or partial in the wire cable meaning rotating one end doesn't spin the other end? Is the speedo drive mech fitted at the front wheel end?
The drive between wheel and speedo is 100% mechanical, so should be able to work out what isn't working correctly.
If all that checks out, then could be the speedo mechanism.
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Post by Dixie Dean on Apr 13, 2021 21:48:28 GMT 1
I don’t understand why the trip metre works but not the Speedo
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Post by Dixie Dean on Apr 13, 2021 21:51:51 GMT 1
No sure the Speedo works what if I put a drill on to the end of the cable do you think that would be fast enough
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Post by Dixie Dean on Apr 13, 2021 21:53:36 GMT 1
The cable is new so rounded ends
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Post by Dixie Dean on Apr 13, 2021 21:57:16 GMT 1
No rounded ends
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Post by shaunthe2nd on Apr 13, 2021 21:58:23 GMT 1
They are slightly diferent mechanisms. The trip is direct geared drive, the speedo indirect via a rotating magnetic. It also relies on a master spring and damping mechanism to work.
It is possible that odo works but speedo doesn't. Unlikley the other way unless a gear tooth is broken.
My standard drill can run up the speedo to around 27mph at max reverse speed. I need an adaptor to run faster than this.
It has to run reverse ie anti-clockwise though.
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Post by midlifecrisisrd on Apr 13, 2021 22:19:04 GMT 1
Ah!
If the odo meters run but the needle doesn't move it may be the old sticky needle stop problem
They are made of rubber and go tacky so the needle sticks to it
Take the top cover off and carefully move the needle off the stop and give it a gentle wipe
Do not touch the face as they are very delicate
Steve
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Post by Dixie Dean on Apr 13, 2021 22:20:32 GMT 1
I will try the Drill on the cable and then a genuine cable
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Post by Dixie Dean on Apr 13, 2021 22:21:42 GMT 1
Ok thanks
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Post by shaunthe2nd on Apr 13, 2021 22:40:36 GMT 1
Or the needle may have jumped the end stop. Or the facia has distorted and is stopping the needle moving. Seen both of these before.
I didn't mention these as you said that the speedo works, but maybe it doesn't, only the odo.
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Post by Dixie Dean on Apr 13, 2021 22:51:08 GMT 1
I have seen the needle move of the stop hopefully it’s the cable
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crogthomas
Drag-strip hero
In his shed....
Posts: 261
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Post by crogthomas on Apr 14, 2021 16:08:31 GMT 1
Have you actually ridden the bike?
As shaunthe2nd has said, you are very unlikely to be able to get the speedo to register a reading just by turning it with your fingers, but the odometer will still turn.
There is probably nothing wrong with it.
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Post by Dixie Dean on Apr 14, 2021 16:13:17 GMT 1
Hi only ridden up my road as still not noted don’t think the Speedo was working just ordered gen cable from Webb’s hopefully that will sort it
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Post by shaunthe2nd on Apr 14, 2021 16:58:37 GMT 1
Test with a drill in reverse.
I use an old section of speedo cable about 2 inch long. The round section in the drill mouth and the square section in the back of the speedo. You should get a reading but must run drill in reverse.
You can also use a 'used' rivet 'nail' ie the bit that breaks off into the rivet gun. Needs to be a bigish rivet though.
Or leave your original cable attached to the speedo and attach your drill at the wheel cable end. Again run drill in reverse.
If you have no luck you can send me the speedo and I can have a look at it for you to see if its salvagable.
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Post by Dixie Dean on Apr 14, 2021 17:07:10 GMT 1
Do you refurb them ?
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Post by shaunthe2nd on Apr 14, 2021 17:17:07 GMT 1
Yes, if they are not beyond repair. Done a lot of LC, LC2 and AC clocks a few other odds and sods. Can also convert km to mph for most models too. Feel free to PM me if you want them looking at. |
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Post by Dixie Dean on Apr 14, 2021 19:35:46 GMT 1
Just tested with cable in Speedo and spun it up on the drill and the Speedo works luvly
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Post by reedpete on Apr 14, 2021 20:10:52 GMT 1
Maybe the cable is the wrong way up.
If your cable is the same as other bikes then there’s a ferrule on one end that stops the cable sliding down the outer. That end should go on the speedo.
If you put that end on the wheel end I think you might find it can drop enough to disengage at the top.
Actually I pondered why the same thread size was used in the speedo cable when on the Rev counter ( LC etc) it can only go on one way.
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Post by Dixie Dean on Apr 14, 2021 20:33:37 GMT 1
There is an angled part on one end so I assumed that would go Speedo end
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Post by JonW on Apr 15, 2021 1:34:22 GMT 1
Defo as Pete says, check for the end with the small washer, that should be at the top.
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Post by Dixie Dean on Apr 15, 2021 4:54:28 GMT 1
The small washer and crimped nut is on the other end
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Post by reedpete on Apr 15, 2021 8:40:18 GMT 1
Ok, so as said I’m not familiar with your bike model and cable, but either the elbow should be down on the wheel end or maybe the inner has been put in the wrong was on assembly.
Hopefully someone will pop along and clarify but if it will physically fit with elbow at the bottom, then try that. If not pull the inner out put back in from the other end, leaving the washer end at the top.
But absolutely, the washer is to position the inner correctly, stop it sliding out of the speedo....I’m 99% sure that’s your problem
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