Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > Harv748's ride height tool

[bradders]

knew there was something I wanted to speak to you about today..

[Harv748]

Originally posted by bradders
knew there was something I wanted to speak to you about today..

...my tool...

[aka.eric]

To check/set ride height with weight off rear as per Haynes ,whats the best way to support the bike.Abba type stands use the swingarm pivot,so does the ride height tool.

[skidlids]

If you have solid footpegs then you can use a couple of axle stands, not recommended if you have standard folding pegs.
I usually just get somebody else to help so the back can be lifted so that the shock is topped out. Once you do it once and get a couple of readings so that you know what your sag is then adjustments become easy

[Harv748]

...or I would imagine that with a small trolley jack, there must be somewhere under the rear of the engine casing you can raise the bike just enough to get the wheel off the ground. It only has to be there for a couple of seconds whilst you record your sag.

[aka.eric]

Is this the way to calculate the sag?.Bike on paddock stand,measure from top of spindle nut to mark on exhaust can = 422mm.
Support weight of bike so wheels hanging,measure again = 443mm Sag =21mm.
Maxton spring on shock,should sag be around 10mm.

[aka.eric]

Weight off,wheel hanging.

[Felix]

Yes, you got it right. Make sure your measuring stick is vertical.

[Harv748]

Yep, and this is where it all gets a bit complicated for my small brain, but I think I'm correct now in that you should be increasing your preload until the correct sag setting is achieved.

Once this has been done, you then should do the front the same way. Once that has been done, you then need to look at the loaded sag (ie with you on it (kit included))...and obtain figures suitable for your purpose, ie road or track.

If you find you cant obtain a suitable loaded sag figure whilst still maintaining the static sag at the correct setting, then this is pointing to incorrect springs for your weight.

As with anything to do with suspension...this is probably all bollox!

Someone please correct me if I'm wrong.

[Felix]

Nope, no bollokcs, that.