Supersport Max Lean Angle

42661 Views 225 Replies 43 Participants Last post by LowRyter, 8 mo ago

Rhino

Discussion Starter · Jul 30, 2017 (Edited)

So I have this little spot where I go to test my bikes, Breaking, suspension adjustments, manoeuvres etc. its great on Sundays, no one around and you can run bends both clockwise and anti clockwise, so its perfect to practice taking bends at the Max 48 degree lean angle. The reason I am doing this is because it is just too easy to go past the 48` lean angle and I have been way past on a few occasions with the rear tyre starting to slide out. So I decided that I needed to practice trying to just get to 48 and no more, the idea is to get used to the feel of the 48` so I can recognise the danger point. (fear is usually my danger point but on this bike fear comes way way after 48`

). I made a short video to illustrate this.

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Rhino

Discussion Starter · #2 · Jul 30, 2017 (Edited)

Recorded lean angle

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amoslws

· #3 · Jul 30, 2017

Rossi III is capable of 52 degrees. The manual has the 48 under the frame heading. I suppose they wanted to put it somewhere but the next heading is tyres so why not put it there. 4deg is a lot if it affects a riders confidence in the turn.

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Rhino

Discussion Starter · #4 · Jul 30, 2017

amoslws said:
Rossi III is capable of 52 degrees. The manual has the 48 under the frame heading. I suppose they wanted to put it somewhere but the next heading is tyres so why not put it there. 4deg is a lot if it affects a riders confidence in the turn.

Oh good. I thought as much as I have been taking it much further than 48 without any issues just don't want to take it too far before I have any sliders fitted I think I will aim to make my Max 50` for now, that's only 1deg more than the 49 in the video. I'm thinking the 190s are going to be good for me, will make it a little harder to reach that max angle.

amoslws

· #5 · Jul 30, 2017 (Edited)

Rhino said:
Oh good. I thought as much as I have been taking it much further than 48 without any issues just don't want to take it too far before I have any sliders fitted I think I will aim to make my Max 50` for now, that's only 1deg more than the 49 in the video. I'm thinking the 190s are going to be good for me, will make it a little harder to reach that max angle.

Not looking forward to your post showing you have lost traction. Take it easy boet.
Another thought, the supercorsa can do 58. Maybe that's a safer bet, but it's certainly no touring tyre with very little longevity in the centre

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DucColin

· #6 · Jul 30, 2017

Does anyone know what degrees of lean is needed to remove the chicken strips?.

amoslws

· #7 · Jul 30, 2017

DucColin said:
Does anyone know what degrees of lean is needed to remove the chicken strips?.

48 is a safe bet.. You might want to avoid negative camber at the time >

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DucColin

· #8 · Jul 30, 2017

amoslws said:
48 is a safe bet.. You might want to avoid negative camber at the time >

I must admit negative camber does concern me. I generally ride on the conditions and how I feel on the day, I've never measured my lean angle that's why I was wondering if I could judge my lean angle by the wear of my tyres.

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amoslws

· #9 · Jul 30, 2017

DucColin said:
I must admit negative camber does concern me. I generally ride on the conditions and how I feel on the day, I've never measured my lean angle that's why I was wondering if I could judge my lean angle by the wear of my tyres.

I stand to be corrected but 40 is about where the embossed rosso letters start.

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DucColin

· #10 · Jul 30, 2017

amoslws said:
I stand to be corrected but 40 is about where the embossed rosso letters start.

So the edge of the tyre would be about 42 degrees, then the tyre will squidgy (deform) to get to the max lean angle. Although the tyre is deforming to some degree at any angle.

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amoslws

· #11 · Jul 30, 2017

DucColin said:
So the edge of the tyre would be about 42 degrees, then the tyre will squidgy (deform) to get to the max lean angle. Although the tyre is deforming to some degree at any angle.

It gets blotches/speckles at the rosso embossing, probably your centre friction line will be 15mm inside from rosso, the blotches come from the tyre flexing. I meant the blotches will be at the rosso embossing when you are at 40 or so. I am not putting my head on it but when I was measuring mine around the track the first session showed 42 on the left side and the blotching/speckles were on touching the rosso sign.
Without any significant evidence to demonstrate, a possible guage could be every 17mm from the tyres centreline could be another 10 degrees (17mm per 10 degrees). If not 100% accurate this should give a fairly good measurement for the regular guy like many of us here.

klev

· #12 · Jul 30, 2017

Rhino said:
Recorded lean angle

How do you calibrate that app? I've recorded 50s in areas where I didn't expect to. I'm very conservative when it comes to leaning.

amoslws

· #13 · Jul 30, 2017 (Edited)

klev said:
How do you calibrate that app? I've recorded 50s in areas where I didn't expect to. I'm very conservative when it comes to leaning.

Try another app to see if the results are comparable. I realised now that the app needs calibrating at first start-up and thereafter its the horizontal and vertical positions that are entered. Also check the calibration on your phone for the gyro. Perhaps my app has updated since I last used it because previously I had to calibrate mid ride because the results were unrealistic but I am no longer finding that setting. Unexplainable.

Edit: my last use was 26 may, and google play is showing the last app update was 4th april which is clearly before my last use. Sorry but I can't explain it but I know I did calibrate mid ride.

steeve

· #14 · Jul 30, 2017

Well at least Chas Davies has nothing to worry about, his jobs safe.

klev

· #15 · Jul 30, 2017

amoslws said:
Try another app to see if the results are comparable. I realised now that the app needs calibrating at first start-up and thereafter its the horizontal and vertical positions that are entered. Also check the calibration on your phone for the gyro. Perhaps my app has updated since I last used it because previously I had to calibrate mid ride because the results were unrealistic but I am no longer finding that setting. Unexplainable.

Edit: my last use was 26 may, and google play is showing the last app update was 4th april which is clearly before my last use. Sorry but I can't explain it but I know I did calibrate mid ride.

I dont see the calibration setting in the pirelli app.

amoslws

· #16 · Jul 30, 2017

steeve said:
Well at least Chas Davies has nothing to worry about, his jobs safe.

Redding isn't though. Jack Miller the Aussie might be taking over from him.

Rhino

Discussion Starter · #17 · Jul 30, 2017

DucColin said:
Does anyone know what degrees of lean is needed to remove the chicken strips?.

Good question DucColin . I also used to get off the bike and check the tyre wear after a tight corner to see how much more lean angle I had left before I reached the edge of the tyre. although its a good way to get your brain in sink with your bike I suggest you get a lean angle app and practice on familiar bends :grin2:

steeve

· #18 · Jul 31, 2017

Forget trying to hit targets, just get out and ride, enjoy it. If the strips go then that's a bonus.

Reactions: 2

DucColin

· #19 · Jul 31, 2017

steeve said:
Forget trying to hit targets, just get out and ride, enjoy it. If the strips go then that's a bonus.

I do ride, I commute, I go out for fun. My days of trying to hit targets are long gone but I still get curious about lean angles and such.

Reactions: 2

John

· #20 · Jul 31, 2017 (Edited)

Watch this, saves me typing a VERY long thread on ground clearance, and knowing how to keep a motorcycle as upright as possible in a corner ......

P.S. and if you think this guy is unique, Google 'Mulholland motorcycle crash' and entertain yourself for hours watching crashes on this corner. The majority are exactly the same as this, the rear tire losing traction BECAUSE hard parts of the bike touched the ground, and lifted the weight off the rear tire.

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