Tag Archives: General tuning

Changing front sprocket on yamaha yzf-r125

This is me trying to do a walkthrough of changing the front/drive sprocket on a Yamaha YZF-R125 without a rear wheel stand/paddock stand.

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Baffled!

I did a little test run today, primarily wanting to put some miles on the new tyres…unexpected results in other areas tho.

A couple of months ago when I got the PCV fitted and bike tuned I also got them to put a 15t sprocket on the front since I’d kept bouncing off the gearing up until then and was looking for better cruising rpm (e.g. so I can cruise at 70ish over longer distances without revving like a twat the whole way). which is fine, but it meant I’d never had a direct comparison with before/after tune on the original gearing.

In the spirit of seeing just how good my “mud and snow” rated winter tyres are, I’m wanting to do some “local exploring” where I’d likely be wanting acceleration over top end so I put the 14t back on to test. Also for exploring a degree of stealth may be beneficial so I put the baffle in the end of the can (which I’ve also never tested properly). Without the baffle “stealthy” is definitely not a quality it has.

Continue reading Baffled!