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Discussion Starter · #1 ·
I want to add a tachometer to my single-gauge 2009 bonneville and I like the punk-rock aesthetic of a bolt-on mini-tach like Dime City's offerings: http://tinyurl.com/hytulq7 (I'm open to other suggestions too).

My questions are: what ratio do I need and what type of connector?
 

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It must be an electronic tacho not a mechanical one that has to have a certain ratio. These Bonnies have no facility for a mechanical cable operated tacho. Dime City should be able to advise and specify the correct one for the Bonnies.

Thread with installation tips and photos for a similar instrument:

http://www.triumphrat.net/air-coole...39311-aftermarket-mini-tach-installation.html

Those instruments, also sold by multiple sellers, like Triumph Performance and Mike's XS have a poor longevity record.:

http://www.triumphperformanceusa.com/index.php?main_page=product_info&products_id=219

http://www.mikesxs.net/parts/yamaha-xs650-black-face-electric-tachometer-0-12000-rpm

Member D9 suggests a better option on this post:

http://www.triumphrat.net/air-coole...market-2-5-tach-pre-canbus-2.html#post5363970
 

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"
I must have lucked out. I've had mine for 4 years without any problems.
Craig
I must have un-lucked out. After 4 years with the minis I'm on my 4th Tach and second speedo. The speedo I just had installed 350 miles and one week ago is already wagging it's needle at me and anything above 70 mph is a wild guess. I put up with that for 16,000 miles on the last one until it packed it in and rode most of last summer without a speedo or a tach waiting for new ones. The tachs are even more prone to blowing up. They're always replaced under warranty but then there's shipping and installation costs, or your time dicking around with wiring costs.

I've had it with them. Anybody have any experience or longevity luck with the Koso clocks D9 was posting?
 
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... and there you have it.

Steve - after having suggested the Koso units a number of time to owners
looking at mini-tachs and not a single taker thus far, I've given up mentioning them.
The easy availability of and continuous demand for cheap electronic 2.5" minis is what it is, owners
are going to keep buying them and installing them with the same mixed results we've seen for
years now.

Meanwhile, these low-profile mini tachs by Speedhut look like another possibility - you can customize
the instrument face right on Speedhut's website, which is neat-o.
2 1/16" or 2 5/8" OD, looks like matching speedometers also available.
http://www.speedhut.com/gauge/GL2-TACH-03/7/Tachometer-Gauge-10K-RPM

Cheers

D9
 

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Discussion Starter · #7 · (Edited)
Wow...the custom options on Speedhut are pretty kickass. Upon closer inspection, their gauges are intended for automotive applications and aren't waterproof. Not sure if that's a good idea.
 

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My understanding is that Speedhut's instruments are "water-resistant" but not "waterproof",
so perhaps not intended for open-air marine applications.

Here is Speedhut's take on water resistance, see FAQ 02. You can
also order their instruments with additional silicone sealant.
http://www.speedhut.com/faq.i#are-yo...ges-waterproof

An interesting and informative read from Koso on classifications of sealing against dust & water
http://kosonorthamerica.com/faq/are-the-koso-meters-waterproof-or-water-resistant/

D9

Wow...the custom options on Speedhut are pretty kickass. Upon closer inspection, their gauges are intended for automotive applications and aren't waterproof. Not sure if that's a good idea.
 
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