Author Topic: Adjusting the Front Spring Preload  (Read 2442 times)

0 Members and 1 Guest are viewing this topic.

Offline Tonio50

  • Crosstourer Pro
  • ***
  • Posts: 131
  • City / Town: Dublin
  • Country: Ireland
Adjusting the Front Spring Preload
on: November 09, 2015, 04:19:28 PM

Quick question re the front spring preload

I'm trying different settings and was wondering something

When I got the bike, the bloke before me had it set with one groove showing = hard according to the manual

I tried Veejay's setting of turning it fully counterclockwise = soft

Question;  Is the front sitting lower with the preload turned fully counterclockwise?

Sorry if it's a daft question

Cheers

#1

Offline Hartley

  • Crosstourer God
  • *****
  • Posts: 2941
  • Bike: Crosstourer
  • City / Town: Northampton
  • Country: England
Re: Adjusting the Front Spring Preload
Reply #1 on: November 09, 2015, 05:36:59 PM
I'd say the front will be sitting lower, you've reduced the spring preload.
As I understand it. you've reduced the weight at which the spring starts to compress therefore the bike will sit lower for a given weight. I'm no suspension expert but that's how I think it works.

Paul


#2

Offline Tonio50

  • Crosstourer Pro
  • ***
  • Posts: 131
  • City / Town: Dublin
  • Country: Ireland
Re: Adjusting the Front Spring Preload
Reply #2 on: November 09, 2015, 05:46:58 PM
*Originally Posted by Hartley [+]
I'd say the front will be sitting lower, you've reduced the spring preload.
As I understand it. you've reduced the weight at which the spring starts to compress therefore the bike will sit lower for a given weight. I'm no suspension expert but that's how I think it works.

Paul

Thanks Paul

When you reduce the preload do you mean when it's turned fully counterclockwise?

Sorry for being a dope:-)

#3

Offline scotsy

  • Crosstourer Master
  • ****
  • Posts: 1536
  • Bike: CRF1000
  • City / Town: Leigh,Lancashire
  • Country: UK
Re: Adjusting the Front Spring Preload
Reply #3 on: November 09, 2015, 05:51:50 PM
It will 'sag' more with lower preload so might be lower under its 'own weight' (static sag) and again when the rider sits astride the bike and his weight also pushes down onto the spring (rider sag)

You can find measurements for these 'sag' figures but a forkspring change could possibly be needed to enable the required values to be achieved.

Its a minefield but worth the effort when you get it right 'for you'  :305:

#4

Offline Hartley

  • Crosstourer God
  • *****
  • Posts: 2941
  • Bike: Crosstourer
  • City / Town: Northampton
  • Country: England
Re: Adjusting the Front Spring Preload
Reply #4 on: November 09, 2015, 06:04:10 PM
When you reduce the preload do you mean when it's turned fully counterclockwise?

Yes thats right, counterclockwise = reduce.

Paul


#5

Offline scotsy

  • Crosstourer Master
  • ****
  • Posts: 1536
  • Bike: CRF1000
  • City / Town: Leigh,Lancashire
  • Country: UK
Re: Adjusting the Front Spring Preload
Reply #5 on: November 09, 2015, 06:05:08 PM
This is looking ok from youtube