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-   -   forks bottoming out - help (/showthread.php?t=79304)

bradders 03-May-2009 23:38

up the preload then :D

job for Tuesday

skidlids 03-May-2009 23:43

Quote:

Originally Posted by bradders
up the preload then :D

job for Tuesday



Just like people did when they had bikes with twin rear shocks and wanted to carry a passenger, they just wound the stepped preload collar round a notch or two to stop the backend bottoming over the bumps

bradders 04-May-2009 01:09

anyone know the std rate? just found the calculator on racetech and it says I should have 1.067kg springs, but only lists 1.0kg as max, so want to know the difference between that and standard as it says standard is 0.960 anyway!!

skidlids 04-May-2009 01:42

Only got info on the Ohlins FG5110 forks as fitted to the 1098S
1.0kg/mm springs, Fork Stroke/Travel 120mm

bradders 04-May-2009 01:43

found a load of info here

http://old.racetech.com/evalving/Spr...pringType=Fork

http://www.ducati.ms/forums/showthread.php?t=55525

the 848 has a slightly ligher sping at .95

skidlids 04-May-2009 02:30

http://www.ducati.ms/forums/showthread.php?t=55525

Yep thats the one where I got the PDFs from when looking into the Setup on Dallas's 1098 following his get off at Silverstone,
Opinion is that they are sprung for riders weighing 72kg rider.

so if assuming a 50/50 Front/rear bias then 36kg on the front, roughly a 90kg rider would put another 9kg on the front and if the bike weighs 180kg wet it puts 90kg on the front so spring rates would need to be about 4% higher
and so on
Rider Spring
kg kg/mm
54 0.96
72 1.00
90 1.04
108 1.08
126 1.12

andyb 04-May-2009 16:59

Quote:

Originally Posted by bradders
anyone know the std rate? just found the calculator on racetech and it says I should have 1.067kg springs, but only lists 1.0kg as max, so want to know the difference between that and standard as it says standard is 0.960 anyway!!


Its about 10 pies i think.......;) :D

Monty 04-May-2009 22:52

Quote:

Originally Posted by andyb
Its about 10 pies i think.......;) :D


I was going to tactfully suggest that since Paul is a 'big' lad he may need a stiffer spring-but I think you have already done that-just without the tact.....................:lol:

John

bradders 04-May-2009 22:56

but looking at whats available, seems 1.0kg is all there is, and its not that much more than std so why spend the money?!

skidlids 04-May-2009 23:14

Yet they do up to 1.2kg/mm for the 996

http://www.motonekoparts.com/Race-Te...1-p-17992.html


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