I have a raptor 660, 2001.

I have 2 questions...

What's the RPM range of these things?

Is there a hook-up so i can instal an RPM guage?

Thanks

 

The Rev-Limiter is set at 9,000rpm, so thats their red line. and to hook up a tach you need a Dyna CDI.

 

christ is there a cheaper option to hooking up a tach than this CDI thing?

3-400$ is way too much cause i only want the RPMs :'(

anyone else know of an alternative?

 

i know what you mean, i want a tach on my Raptor too.

 

Northern has one Here for $37.00. I have one for setting idle speed on engines when adjusting carbs. It works well and you should be able to fab a mount for it for just about anything.

 

looks good, but does it read fast? or does it have like a delay in it. also, how did you hook it up?

 

sweet, i have been searching for a cheap tach for setting the idle speed on my carb when i put the engine and everything back together.

 

I think it updates every 2 sec. I never paid attention as to how quick it read from around 1K to upper revs. If I get a chance tomorrow I'll hook it up and check.
It uses a ground wire and signal wire you just wrap a few turns around the spark plug wire. Internal battery (the unit is sealed, not replaceable) is supposed to be good for 5 years.

 

They work ok. I have them on my quads and they are slow to react, and because they are digital, and not analog...they are tough to read when your winding it out. The revs build fast and the tach doesnt seem to keep up, until it tops out for a sec or two. They do work good for cruising and for setting idle speed.
And they are cheap, and only require one wire, which wraps around the spark plug wire.

 

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