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jake27081991 5th gear
Joined: 08 Jun 2009 Posts: 82 Location: Victoria Point, Brisbane
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Posted: Fri Apr 02, 2010 5:44 pm Post subject: speedo how to |
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hi all,
got round to fixing my speedo cable today, just replaced it with an old one i had in the shed.. (the inner cable was broken... can this be replaced, and shorted?)
however the speedo still does not read the correct speed...
it has 1525 written on it which i think is tpm.?
it works fine the whole way through the range, however it is about 50% of what it should be reading...
the question is, can i adjust it? what do the two screws on the back of the speedo do? ie. is there a way to loosen the spring?? i just dont want to go fiddling to much as i dont want more problems...
thanks
Jake
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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bigcarle Full Licence
Joined: 07 Nov 2007 Posts: 578 Location: lota, brisbane bayside
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Posted: Sat Apr 03, 2010 7:29 am Post subject: |
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otto instruments of evans rd salisbury is a well know repairer and calibrater. the 1534 should relate to the number of cable turns to a certain speed
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jake27081991 5th gear
Joined: 08 Jun 2009 Posts: 82 Location: Victoria Point, Brisbane
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Posted: Sun Apr 04, 2010 1:35 pm Post subject: |
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so once i have the turns per meter, how can i do it my self?
are the screws on the back of the speedo ajustment screws?
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jake27081991 5th gear
Joined: 08 Jun 2009 Posts: 82 Location: Victoria Point, Brisbane
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Posted: Sun Apr 04, 2010 2:34 pm Post subject: |
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i took the speedo apart and there doesnt seem to be any means of adjustment..
now i guess it is time to get a new speedo...'''
how do i determine the correct speedo to get?
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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NZJLY Free Wheeling
Joined: 14 Apr 2005 Posts: 103 Location: Hamilton, New Zealand
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Necros87 Full Licence
Joined: 15 Aug 2005 Posts: 295 Location: Central Coast
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Posted: Mon Apr 05, 2010 10:31 am Post subject: |
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i have a moke spedo in mine, it reads km... not that its calibrated properly... but it has km/h written on it. fits fine in the hole, looks original, just different colour
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jake27081991 5th gear
Joined: 08 Jun 2009 Posts: 82 Location: Victoria Point, Brisbane
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Posted: Tue Apr 06, 2010 11:18 am Post subject: |
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i gave otto a call and he quoted around $200..
is it possible to get a speedo around 3000 tpm? as the current one is 1525 tpm andit reads around 50% acctual speed.
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grant69 moderator
Joined: 27 Jan 2004 Posts: 2796 Location: Cairns Nth Qld
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Posted: Tue Apr 06, 2010 12:20 pm Post subject: |
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I used to run a pushbike speedo cost $50 and you can calibrate it yourself, mount under dash or in glovebox, these days I have a GPS tells me the speed etc, and I can set it to warn me if I go over a set speed, I use it in all the cars I drive, never look at the speedo anymore
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John Ballard valued contributor
Joined: 11 Feb 2004 Posts: 2646 Location: Dubbo NSW
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william ballard valued contributor
Joined: 27 Jan 2008 Posts: 284 Location: Dubbo
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Kel 我能行
Joined: 31 Mar 2008 Posts: 463 Location: Hunter Valley
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Posted: Wed Dec 28, 2011 8:56 pm Post subject: |
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For a while now, I have struggled with the idea of paying upwards of $400 (a new / used speedo out of a mini moke and then recalibration at Manly) to change my speedo from miles to kilometers.
I had little white and black stickers on the glass to tell me where the 60, 80, 100klms positions were. I got the position of the speeds by the GPS. This was acceptable but looked awful. But I do remember when we changed from miles to kilometers, so many years ago, I brought the stickers to tell me how fast I was going back then.
So, as I am a bit tight with money, I thought why not do it again.
I got a few measurements and a few different colours to try and match the speedo face. I also tried to match the font.
and this is what I got.
from this
I disassembled the speedo and used very thin double sided tape to stick the custom made speedo into position. It was a bit tricking to try and get it under the needle and I mucked it up a little. It is about 2klms per hour out. But hey you cannot really see it when you are sitting in the drivers seat.
It is still a bit untidy, when you look close, butit will grow on me.
Regards
Kel
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Shawn Full Licence
Joined: 16 Sep 2005 Posts: 385 Location: Redlands, Brisbane, Australia
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Posted: Thu Dec 29, 2011 7:18 pm Post subject: |
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This is what I did with mine (black face speedo). I had a spare and was not working with my original gold face, so I went a bit fearless. It works and is quite accurate, but might not work with yours. (ie a speedo reading low) You might completely stuff the speedo by doing this. All care, no responsibility etc.
Ok, disclaimers aside...
Mine was reading about 10mph high, so I took the unit apart, and re-connected the inner bit with the speedo mechanism to the speedo cable in the car. Driving at a set speed, confirmed by two GPS units, I noted how much the speedo was reading high. I then turned the needle on the spindle back by the same amount as it was reading high.
To do this, I needed to hold the spindle very carefully with fine pliers and push back (anti-clockwise) the needle. I guess that this created more tension on the tiny watch coil spring, resulting in a lower reading. In your case I guess you'd need to go the other way, but this assumes that there is enough tension in the coil spring to begin with to allow for a fairly substantial relieving of tension to allow a doubling of the reading (if that makes sense!)
Before you start moving needles and stuff, check that everything else is ok, and that nothing is rubbing or draging. 50% low is a long way to be out. A bit of lube might go a long way.
Like I say, requires patience and risk.
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Monk moderator
Joined: 13 Sep 2009 Posts: 671 Location: Canberra
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Kel 我能行
Joined: 31 Mar 2008 Posts: 463 Location: Hunter Valley
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morris12 Got the hang of this ...
Joined: 21 Sep 2008 Posts: 232 Location: Wollongong, NSW
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Posted: Fri Dec 30, 2011 2:27 pm Post subject: |
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hi all, i got the stickers that cover the full face of the mph to convert km,s i have never been book (touch wood) they had these years ago i have some left regards warren
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