Post by billwill on Jun 29, 2023 15:06:03 GMT -5
Got the chance to do a little more tuning earlier today.
I was able to install the new clutch bell and while I did weight it to check for a difference (it's only 20g lighter) didn't expect to see much of a change. Well, turned out to be true. No noticeable change, although I suspect there will be some cooler belt/CVT temps and I no longer have to worry about any warping of the stock unit.
Not sure if this new belt is too long either but maybe someone can give me a gut check on the way the rear belt is sitting...
I then took a look at the belt and variator. I had marked the variator with a sharpie a while back just to keep an eye on how high (or not) the belt was traveling. Switching to the longer belt sure did help with acceleration and top speed and gave noticeable further wear marks on the sharpie line.
I wanted to note just how much shimming I had done - looks to be 2.68mm worth. Not sure how I feel about that but it feels like more than normal. I have it setup to use the least amount of shimming possible while still allowing the belt to touch the drive boss when disengaged. I may try removing some shims to get further belt travel.
I also switched from 7g rollers to 6g rollers in hopes of hitting the powerband a bit better. With 7g rollers, the bike would engage, get off to a start and spike up to 9k rpm for 20-ish feet and/or 10-15mph then dip to about 8-8.5k up until top speed. I wanted to see if I could increase this.
The 6g rollers did in fact do the trick. The bike now spikes to around 10-10.2 rpm then mellows out up to top speed at around 9500ish rpm. Feels like it accelerates better.
I was wondering about top speed and expected that to drop by 1-3mph but surprisingly I logged my quickest run yet. Some of the riding was downhill but not by much and not much different than when I've logged other top speed runs. Very surprising. Maybe a glitch with the app but I will take it for now!
I was able to install the new clutch bell and while I did weight it to check for a difference (it's only 20g lighter) didn't expect to see much of a change. Well, turned out to be true. No noticeable change, although I suspect there will be some cooler belt/CVT temps and I no longer have to worry about any warping of the stock unit.
Not sure if this new belt is too long either but maybe someone can give me a gut check on the way the rear belt is sitting...
I then took a look at the belt and variator. I had marked the variator with a sharpie a while back just to keep an eye on how high (or not) the belt was traveling. Switching to the longer belt sure did help with acceleration and top speed and gave noticeable further wear marks on the sharpie line.
I wanted to note just how much shimming I had done - looks to be 2.68mm worth. Not sure how I feel about that but it feels like more than normal. I have it setup to use the least amount of shimming possible while still allowing the belt to touch the drive boss when disengaged. I may try removing some shims to get further belt travel.
I also switched from 7g rollers to 6g rollers in hopes of hitting the powerband a bit better. With 7g rollers, the bike would engage, get off to a start and spike up to 9k rpm for 20-ish feet and/or 10-15mph then dip to about 8-8.5k up until top speed. I wanted to see if I could increase this.
The 6g rollers did in fact do the trick. The bike now spikes to around 10-10.2 rpm then mellows out up to top speed at around 9500ish rpm. Feels like it accelerates better.
I was wondering about top speed and expected that to drop by 1-3mph but surprisingly I logged my quickest run yet. Some of the riding was downhill but not by much and not much different than when I've logged other top speed runs. Very surprising. Maybe a glitch with the app but I will take it for now!
