Maintenance & Technical > KX500 Original
Yet another gearing question
1980mcneil:
Want to make the K5 into a real crawler. We have some very tight single track here in Washington and I'm trying to avoid lots of clutch work. If I could knock first gear down a third or half that would be perfect for crawling. And I could do most of my trail work in second or third. I pretty much never use fifth. Especially at the speed it's meant for. So I won't be loosing top end for what I do.
Without modifications. What's the smallest front, and largest rear sprocket I can run? ( That would give the desired effect 1/3-1/2 of stock speed)
BTW. Already have the heaviest powerdynamo fly. PSP2 pipe and Reed spacer.
Foxx4Beaver:
14-52 would probably work well. What are currently running?.
1980mcneil:
It's stock.
I looked on a chart and looks like 14-52 would go from 3.38 to 3.71.
Seems like a 10% difference. I think I'm trying for closer to 33%
Do you know the lowest front I can run without mods or rubbing? Largest rear?
Of course I don't really know what I'm talking about. Just using this chart
https://www.google.com/search?q=sprocket+ratio&oq=sprocket+ratio&aqs=chrome..69i57.10067j0j4&client=ms-android-att-us&sourceid=chrome-mobile&ie=UTF-8#imgrc=FSeyeJMaB88yiM:
Looks like a 4.58 would give me the desired result.
So a 12-55 or 13-59. If that's even possible or I'm using the chart correctly
Foxx4Beaver:
You could go to 13 on the front...but watch your case!!...there's several controversial threads on here about running 13T fronts allowing the chain to tear up the engine case. My bike will never see a 13. There's a member on here that says he modifies the case a bit so there's no issue...but again, that's entirely up to you.
1980mcneil:
Looks like I would need a 63-64 on the rear to get the results I'm looking for. Is that doable?
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