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post #1 of 6 Old 12-28-2014, 2:24 PM Thread Starter
 
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rrv sproket size

as the title says im curious as to what the standard size sprockets are as i have 16/42 or 16/43 cant rember now but im sure theyre standard but my speedo seems well off, i can be doing 30mph following my wife etc and my speedo reads around 20mph now this dosent seem right but after looking around seems theres more than one option for standard size so im stumped. im looking at doing the viking upgrade and depending on after results maybe sprocket change aswell but with my speedo the way it is think i need to address this first, any advice or tips etc would be much help. thanks guys
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post #2 of 6 Old 12-28-2014, 4:45 PM
 
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Re: rrv sproket size

Pretty sure OEM sprockets are 16/42.
It's odd that your speedo reads to slow. Typically it's the opposite, anywhere from 3% to 5% too fast. And that's with OEM sprockets. Most people reduce ratio and do the -1+2 or +3. Or simply a -1, in your case a 15 tooth. Your speedo will display a higher error, as much as 10% to 20% depending on your sprockets and tire size. And it's always to fast - not slower than actual speed.
A speedohealer will solve your problems. I use one, it's easy. Set it and forget it.

But...
You may have other problems with your speedo.
You're talking about an error of around 30% too slow.
That's probably not sprockets. Count the teeth on your sprockets to be sure.
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post #3 of 6 Old 12-28-2014, 8:27 PM
 
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Re: rrv sproket size

That's advice to listen too?
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post #4 of 6 Old 12-28-2014, 10:02 PM
 
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Re: rrv sproket size

I'm no doctor, but in my medical opinion you either have something wrong with your speedo drive/sensor, or you are running some radical tall gearing, also blunt, nice input dickhead
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post #5 of 6 Old 12-29-2014, 3:12 PM
 
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Re: rrv sproket size

Quote:
Originally Posted by blunt View Post
That's advice to listen too?
I've told you before, I have no problem being called out on info that may be wrong.
So instead of giving me the idiot treatment, maybe you can grace us with a solution.

OP said tips or advice welcome. I gave a topical explanation of what I know based on my experience with my speedohealer, varying sprocket sizes I've tried, and comparing a few OEM speedometers against my Garmin.
I know it's far from being comprehensive, but until OP knows for sure what sprockets he has, that's as far as I can comment.
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post #6 of 6 Old 12-30-2014, 3:09 PM
 
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Re: rrv sproket size

Quote:
Originally Posted by grant1985 View Post
im sure theyre standard but my speedo seems well off, i can be doing 30mph following my wife etc and my speedo reads around 20mph
I edited his post for all the slow seats in the back. What else does he have to say?
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