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Whishlist for the Communauty : Settings tutorials

Started by tchemi, March 03, 2017, 01:48:49 PM

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h106frp

Maxhud will also help you to understand what the bike is doing - suspension, lean, control input etc

For more experienced users debug mode adds even more feedback info

tchemi

So...

We recently started this thread and then... nothing more.

I red a lot of forums, sites and even a little book that explain how to setup a bike for track day. Ok, GPBikes is not about trackday but hey, it is still about setting up a bike.

On each document I red, they are allways saying that the first step is to set up the front and rear SAG depnding on your weight (static sag and rider sag) using zip ties, rulers, central stand etc...
Ok, very good, that's a good start but... How can I do this in GPB ?? :(


also, this article is very good IMO
http://www.gostar-racing.com/club/motorcycle_suspension_set-up.htm#Where did I start

tchemi

Yep, very interesting article. Can anyone confirm or infirm that ?


Front Compression :
QuoteSOFT: If your compression is too soft, your bike will nose dive too quickly, then as you turn into the corner, the bike will collapse into it and you end up having to compensate.

HARD: On the other hand if you have too much front compression damping, do not get enough nose dive and the bike will be reluctant to turn and may drift wide on entry to the corner.

Front Rebound :
QuoteSOFT: If it rebounds too quickly in the corner your bike will sit up very quickly creating a longer wheel base. The front wheel "shooting" out also causes the bike to drift wide or a feeling of the front end "washing out" If this happens, increase (harden) your rebound to slow the rate the front wheel rebounds.

HARD: On the other hand if the rebound is too hard, when you let go of the brakes and on to the throttle in a corner, because the wheel is compressed for longer you will have a shorter wheel base for longer. This may cause the bike to feel wooden in the corner and turn too quickly. Soften her up.

Rear Compression :
QuoteSOFT: Let's imagine that you are exiting a corner on your motorcycle, and the bike is leant over and you start to accelerate smartly. If the compression damping is too soft, you will get too much rear end "squatting" causing a "nose up" situation. This will cause your bike to drift wide on exit of the corner. This is not the same as a too much of front compression damping which causes the bike to drift wide on entry to the corner.

HARD: On the other hand if your rear compression damping is too hard, you will not get enough "squatting" and therefore may not get enough traction. This will cause a bit of rear wheel spin, or the rear wheel suddenly "kicking up". You can imagine what can happen in extreme circumstances.

Rear Rebound :
QuoteSOFT: However if it is a long corner then your rear rebound will come into play mid-corner. If your rear wheel kicks up too quickly, it will unsettle the chassis of the bike making it "wallow" and "lurch" mid corner. A lot of people wrongly try to cure mid comer "wallowing" by increasing rear preload. This may "stiffen" the rear end but you may loose a bit of suspension travel. The cure is to increase (harden) rear rebound.

HARD: However if your rear suspension is too hard, your back wheel will not sit up quick enough. This will cause you the have the back end squatting causing a "nose up " situation for longer. This may cause you to drift wide similar to the effects of soft compression. Also since the rear shock does not extend quick enough, you may get a feeling of vagueness or loss of traction