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[KuRi]

Hi! I was checking my belt tension today and it was at 50kg (measured with the gates krikit ii device). I decided to adjust to reach the recommended ~70kg (750N in the manual).
I also noticed the belt had a very little gap from the sprocket so I decided to give it just a little more.

The tension is now better (~75hz with app and 70kg with the krikit), but I wanted to share a picture of the left gap of the belt to know your opinions.

Does it look ok to you? Too much gap?

Thanks mates!

[princec]

Gap's perfect. About the width of a credit card. Tension-wise you want to be able to twist the belt with finger and thumb (from the middle of the bottom run) 90 degrees in either direction but not a degree more.

Cas

[KuRi]

90 degrees? that sounds too much, I was not able to twist it when it was at 50kg and I can't do it now at 70kg xDDD

Thanks!

[princec]

Only just 90 ... a bit less perhaps. Yours does sound rather tight.

Cas

[2020_SRS_Commuter]

My only experience with this is just this one bike, my 2020 srs. I've put 73k miles on so I've done a lot of belt adjustment and a few replacements.

I've learned:
1) Krikets are not repeatable or consistent with each other. I bought two, gave up, and use the phone app.
2) The sprocket centering isn't perfect, so there is a repeatable point in each 360 of rotation of the rear wheel where its highest, and lowest. I was able to rotate my rear sprocket two holes over and mitigate that some.
3) The tension raises 8-10hz when torqued from what you measure when the axle is loosened to adjust.
4) I stopped using the app to periodically check the tension and just use the twist method. If you know what a tensioned belt feels like, you have your reference. If it feels loose, its time.
5) It doesn't seem to matter if the belt touches the fence at the rear. I look at the front sprocket and center it there. That the way I run them and it doesn't make noise or abrade the belt, and they go the full 25k.
6) What I see on 25k belts is - once they are off - bend it backwards so you are curving the opposite way it normally bends, and you will see big cracks in between each belt tooth. They are very hard to see when the belt is on. 25k seems about right for replacement.
 
Usually I set it around 65-70Hz, which can accommodate the rise and fall of the tension as the wheel turns. I have never broken a belt.

[KuRi]

Thanks for all the comments.

I had a 2020 DSR where I spent lot of hours adjusting the belt. I had some left footpeg vibrations that were solved aligning and increasing the tension to the mid zone of the range.
Last year I sold the DSR and bought the 2024 DSRX, much easier to adjust.

Following your comments I have lowered the tension to 60kg from the 70kg I did a couple of days ago (consistently measured with the krikit device), and it goes smooth, no noise and no vibrations. It was also smooth with 70kg but I have read everywhere that lower tension is better. I adjusted it after 1 year for the first time because I noticed it a little low.

In my experience, in winter the tension goes down and in summer it goes up, so I will re-check after 3-4 months.

Cheers!