Anybody have a "bouncy" Speedo? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 17 (permalink) Old 10-25-2011, 01:03 AM Thread Starter
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Anybody have a "bouncy" Speedo?

My speedo needle wobbles or "bounces" at low speed - seems to be steady enough at higher speeds although it is a full 3 mph fast at 70. I don't spend a lot of time looking at it while riding because as we all know we have to tuck our chin to look down - however I do think I have seen it a few times kind of "stick" just a little coming down through 70 - it has never stuck like some guys have described where it sticks and stays, but I'm wondering if I should take it in - for a speedo replacement or if the service dept would just shine me on because it's still working "fine for now". Not looking forward to shelling the full cost of a speedo out of my pocket 2 months after the bike goes out of warranty.

---Daryl

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post #2 of 17 (permalink) Old 10-25-2011, 01:49 PM
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I had a very strange problem with my speedo whereby it would return to zero when I pulled the clutch in, or if I went over 60mph or so. My dealer took the bike in and had it for three weeks, and claimed it was a faulty sidestand cutout switch (!).

Itís hard to see how this might cause a problem with the speedo, but mineís been fine ever since Perhaps itís worth you spraying a bit of WD40 on the switch, and seeing if that helps.
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post #3 of 17 (permalink) Old 10-26-2011, 12:01 PM Thread Starter
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You remember the older cars in the 70's and 80's that had the speedo that was rectangle? And the needle just went from left to right in a straight line instead of around in a circle on a dial? I remember riding in those cars and the needle would bounce like crazy - especially in the lower mph - or when it was cold, and then seemed to run better later - and what I found later in life having my own cars worked on is that it is the cable itself turning in it's sleeve, binding just a little so it spins in jerks instead of in one smooth motion - that is the kind of bouncing I'm seeing on my speedo needle. Now the question is - do we know if ours has a cable or is it electronic?

---Daryl

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post #4 of 17 (permalink) Old 10-26-2011, 01:54 PM
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Strickly electronic
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post #5 of 17 (permalink) Old 10-26-2011, 10:13 PM
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I just bought a 2011 T-Bird (1600 motor). I was reading about the speedo problem that was reported for the 2010 T-Bird. Has anyone heard about this problem on the 2011 model?
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post #6 of 17 (permalink) Old 10-29-2011, 07:19 AM
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well just try the sticky speedo fix and see if it goes away

actually you can make it look quite good by getting a round type medallion and after you put the blue tac over the speedo dome put the medallion on the top

will_s
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post #7 of 17 (permalink) Old 10-29-2011, 01:11 PM Thread Starter
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Hadn't read of the sticky speedo fix - I'll do a search for that - I thought perhaps I had damaged it for pegging it out too long.

---Daryl

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post #8 of 17 (permalink) Old 10-29-2011, 10:23 PM
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Quote:
Originally Posted by TBird Daryl39 View Post
Hadn't read of the sticky speedo fix - I'll do a search for that - I thought perhaps I had damaged it for pegging it out too long.
it was someone in these forums that put me on to it

I had very bad "sticky" needle but after covering the dome with blue tac and putting a binoculars eyepiece cover (and it looked ok )over
the tac I never had the "sticky" problem again.....


edit : here is the original thread and in it is a pic with the eye piece over the blue tac

https://www.triumphrat.net/thunderbir...eedometer.html

will_s
its true, the older you get the crankier you get

Last edited by will_s; 10-29-2011 at 10:30 PM.
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post #9 of 17 (permalink) Old 10-30-2011, 08:04 AM
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I have noticed mine with a bit of a shimmy. Only seemed to start after I got the bike back from it's 2 year service a couple of weeks ago (big bore kit fitted at the same time).
Mine will move backward/forwards around 4 or 5 km/h (eg. when trying to sit on 80, it will swing constantly 78 - 82 ish). I have not mentioned it to the dealer yet, but will if I remember when next in there.
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post #10 of 17 (permalink) Old 11-13-2011, 07:10 AM
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well here we are 2 weeks after my last post above, and today on the way home from a 3 day 900km trip the speedo went haywire. I was just entering a small town, so coming down from approx. 110 kph to a 50 kph zone. As I glanced down I saw my needle jump from 80 to 100 even though I was still decellerating. I Rode through the town and the needle stayed on 100, it would not drop. Out the other end of town I accelerated to the highway speed again (with the other traffic), and ending up cruising on an indicated 190 kph!
When I finally came to a stop about half an hour later, the needle dropped 60 kph as it's lowest point. From 100 down to 60 is sort of stuttered it's way down, rather then a natural smooth needle movement.
So I took a couple of photos for evidence, and when I turned the ignition off the needle dropped instantly to 0 where it belongs.
I will be giving the shop a call again tomorrow. I am 2 months out of warranty, but I will be insisting they fix it at there cost.
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