Yamaha TRX850 Enthusiasts Forum

Hi guys

I have a stock set of YZF750 forks (fully adjustable) fitted on my Rex and was planing on spending a bit of time tweaking the settings a little and see what I could get out of them.
What sort of settings do you guys have or would recommend for preload, rebound etc. I guess I'm after a compromise between comfort and sharpness for some occasional spirited/sporty riding.

Maybe a good place to share fork setups and start a repository/database?

Cheers
Adrien

Hi Adrian,
Look at your weight and the springs to see if your in the ballpark to start.
Set your sag first. A small cabletie around the fork leg is a good guage.
Then Set the rear sag..
There are a number of threads on here about setting it.
Get the comp and rebound set on the rear first

ON THE FRONT FORKS.... (rebound on top/comp on the bottom)

Wind both comp and rebound clockwise as this will increase them till they stop then wind them all the way out again till they stop and count how many clicks. (12 click for an example)
point no 1
Wind comp/rebound both up fully again and use that as your start reference and unwind both comp/rebound half way (if 12 clicks in all then unwind 6 clicks)
Use that as a start point and first on both comp and rebound.
Point no 2
WRITE IT DOWN

Set the rebound first ..Play with and get fimilar with how it effects the geometry and comfort.
You'll feel the difference especially exiting corners..

Point no3
This is why you should set the rear shock first to try and eliminate the rear squatting too much when on the throttle exiting corners, because when the rear squatts your extending the front end and slowing the steering down so you will find you may have picked your apex and line out of the corner but it's running a little wide.

point 4
So back end sorted, the rebound on the front will effect your exit line. On the brakes into a corner again this quickens the steering so as you release the brake you dont want it to rebound to fast as this will slow the steering down and you'll find it running wide again on exit.

Just remember these simple facts and go for a good ride and increase the rebound on top of the fork leg by 2 clicks from half way and notice any changes once you have a feel for it you can just trim it 1 click either way .

point 5
Your own riding style will effect all these things.. Some people sit differently on there motorcycle, some like to brake late and trail that front brake into the corner and this will keep the nose down, others like to release the brake a little earlier and carry a little more corner speed so in effect they would have a different setting .
Remember to write your settings down and any changes you do as a reference plus remember to work from full (clockwise) comp/rebound as that reference so you may end up with from full.. 5 clicks anti clockwise rebound and 7 anticlockwise compression as an example..
Enjoy

So just find your starting point , look at your riding style and play with it and get familiar with how it all works as this may just keep you upright one day when you find those few bumps that suddenly appear half way through a corner..

Brian

I agree with Cobba,

The stock springs are progressive so suggest dumping them, getting linear springs to weight

That done set the sag. Setting the sag is a case of set it correctly for your weight.

Then rebound, then compression. Generally I set the compression for the level of comfort I want v the harshness I will tolerate

for what its worth, and I am still working on mine, but my set up is:

Oil - 10w
Oil Height - 93mm
Preload 7 lines
Rebound Damping 3 clicks out
Compression Damping 6 clicks out
Spring Weight 0.9kg
Fork position 12mm above the yoke

I am about 70kg and like I say, I am still working on it but the above may be a good start.

Thanks chaps, makes sense and is a good starting point! I'll give it some time this week