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Tacho drive

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Moderators: paul doran, Taffus, KeithZ1R, chrisu

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Grog
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Joined: 31st Jul 2008
Location: Nairn, Highland

Tacho drive

#1 PostAuthor: Grog » Thu May 05, 2016 2:56 pm

Afternoon all;

Seeing as summer has finally arrived here in the far north I took the Z1R out for a run round, which found me facing (literally) a long-standing wee annoyance - lack of a rev counter. Thanks to a frame bracing tube being placed a smidgen (technical term) out of place (a looong time ago...), there's no way of getting the tacho cable onto the drive from the front of the engine. Now, I can live with the fuel gauge telling me I've a full tank until half a mile before I need reserve; I don't care that the ammeter needle tries to cheer me up by waving madly from inside its little window without ever telling me anything useful; I can make the speedo tell me pretty much anything by adjusting the amount of twist on the right grip. I just feel the rev counter is missing out on the fun. So, I ask the assembled mass of knowledge: is there any other way of making it work? Fancy electrical gizmos? Telepathy? De-bracing the frame?(this is not an option, BTW). Any and all suggestions welcome.

TTFN, Grog
1979 Z1R (mostly - it's been fiddled with a bit)
1977 Z650B1 - I'll get round to putting it back together one day...

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Taffus
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#2 PostAuthor: Taffus » Thu May 05, 2016 3:16 pm

picture of the brace would help

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FER
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#3 PostAuthor: FER » Thu May 05, 2016 6:56 pm

Z power did an electronic rev counter that looks std , Kath has one on her A2and it works ok . Would it be possible to retro fit one into the Z1R ?
fer

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ADRIAN H
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#4 PostAuthor: ADRIAN H » Thu May 05, 2016 7:47 pm

FER wrote:Z power did an electronic rev counter that looks std , Kath has one on her A2and it works ok . Would it be possible to retro fit one into the Z1R ?
fer


The electronic tachometer I got from Z power, went haywire after 200 miles. The replacement electronic tachometer last a bit longer around 500 miles. I ended up grafting a set of Kawasaki 750 Zephyr clocks, with replacement dial faces from Will Barber.
adrianhorsfield@live.co.uk
Sunny Bournemouth. Dorset. UK.

sid123
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#5 PostAuthor: sid123 » Thu May 05, 2016 8:58 pm

http://www.rimmerbros.co.uk/Item--i-120694

Try fitting one of these if room permits
whoosh im gone

Grog
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Location: Nairn, Highland

#6 PostAuthor: Grog » Thu May 05, 2016 9:48 pm

Evening all;

Thanks for the replies. Taffus - the brace is welded tube, just above the exhaust headers - and JUST in the way of the drive; will fire up a pic when I get a chance if it will help. Sid - don't think I could get that bit in; maybe what I need is a piece that THINKS it's a tacho drive then it can imagine how fast the engine is turning!

TTFN Grog
1979 Z1R (mostly - it's been fiddled with a bit)
1977 Z650B1 - I'll get round to putting it back together one day...

Grog
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Posts: 55
Joined: 31st Jul 2008
Location: Nairn, Highland

#7 PostAuthor: Grog » Thu May 05, 2016 10:08 pm

And evening again!

Fer/ADRIAN H - where is the pickup for the electronic tacho? Off a crank speed sensor or somewhere else?

TTFN Grog
1979 Z1R (mostly - it's been fiddled with a bit)
1977 Z650B1 - I'll get round to putting it back together one day...

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scott
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#8 PostAuthor: scott » Fri May 06, 2016 7:03 am

Grog, I used one of these motogadget speedo/tacho units and is spot on. It is on my zx7r but can easily fit on a zed, very small but bright....about the size of a pack of chewing gum:

http://motogadget.com/en/digital-instru ... -mini.html

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Pigford
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#9 PostAuthor: Pigford » Fri May 06, 2016 8:31 am

I've got an ACEWELL unit... I attached the magnet to the drive sprocket and the speedo unit is a "mini-style" Zed look-a-like.... it could possibly be incorporated into a Zed speedo shell if required :?:

http://www.acewell.co.uk/Acewell%20Spee ... ull&id=271


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And on the 7th day... Zeds were created!

Grog
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Location: Nairn, Highland

#10 PostAuthor: Grog » Fri May 06, 2016 11:38 am

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Folks; thanks for the suggestions. I've (hopefully) attached a pic which shows the clearance available (excuse the grime, it's not as bad as it looks - honest). From memory, a standard drive cable will almost but not quite fit - it's the long metal collar that fouls the tube. Anyone think the cable end (the metal 'tube' bit, not the actual threaded end piece) could be persuaded to bend a bit and still function? I haven't got a cable to hand to experiment with.

TTFN, Grog
1979 Z1R (mostly - it's been fiddled with a bit)
1977 Z650B1 - I'll get round to putting it back together one day...

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FER
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Location: Glenfoot

#11 PostAuthor: FER » Fri May 06, 2016 2:10 pm

Heat the tube up in line with the rev counter drive and dent it with a hammer to allow the cable to fit . You could use a G clamp instead of a hammer if you don't want to break other bits !
fer

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KWACKERZ1
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#12 PostAuthor: KWACKERZ1 » Fri May 06, 2016 2:14 pm

Get one of the custom cable companies to make up an alternative end piece on the cable.

or cut a scallop into the tube, and re weld it.
if fer's bigger hammer approach does not work
Last edited by KWACKERZ1 on Fri May 06, 2016 2:24 pm, edited 1 time in total.

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FER
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Location: Glenfoot

#13 PostAuthor: FER » Fri May 06, 2016 2:24 pm

Big hammers are cheaper than welders :vstoopid :vstoopid :vstoopid
fer


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