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ade
 Post subject: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 6:49 am 
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Joined: Mon Feb 13, 2012 5:51 pm
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Location: Isle of Man
As I'm rebuilding my forks completely and re-springing them too I was curious if anyone has any figures regarding static sag. As rule of thumb the modern bikes have anything from 27>mm so was wondering if anybody has any advice on this subject. :?:

The spring rate seemed very soft indeed less than 6.5Kg approx (.65 approx in the USA)

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'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia


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Ja-Moo
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 8:43 am 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
20 to 25% total travel. 20 for hard riding.

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ade
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 9:56 am 
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Joined: Mon Feb 13, 2012 5:51 pm
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Location: Isle of Man
Ja-Moo wrote:
20 to 25% total travel. 20 for hard riding.



Thanks a lot much appreciated, I will make spacers if necessary to preload the springs :thumbup:

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'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia


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Ja-Moo
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 10:31 am 
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Location: Rio Rancho, New Mexico
ade wrote:
Ja-Moo wrote:
20 to 25% total travel. 20 for hard riding.



Thanks a lot much appreciated, I will make spacers if necessary to preload the springs :thumbup:


We use PVC pipe...........

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........
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ade
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 11:24 am 
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Joined: Mon Feb 13, 2012 5:51 pm
Posts: 115
Location: Isle of Man
Ja-Moo wrote:
ade wrote:
Ja-Moo wrote:
20 to 25% total travel. 20 for hard riding.



Thanks a lot much appreciated, I will make spacers if necessary to preload the springs :thumbup:


We use PVC pipe...........


Jolly good plan, but I'll machine some up out of aluminium in the lathe that are shouldered and will locate in the spring. I'll see what sag I have using the cable tidy around the fork leg method and machine them up to suit.

_________________
'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia


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H2RTuner
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 11:59 am 

Joined: Thu Jun 09, 2011 11:25 am
Posts: 3147
Aluminum has a tendency to "flake" particles off when in contact with harder metals, such as the spring end, as you now plan, especially if the aluminum is "indexed" into the spring. I suggest that the aluminum tube is left flat cut on its ends, and a stainless steel or hardened steel flat washer is used against the tube end and the spring and fork cap. You sure don't really want any of those aluminum wear off particles to migrate down into the dampers.
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ade
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 12:09 pm 
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Joined: Mon Feb 13, 2012 5:51 pm
Posts: 115
Location: Isle of Man
H2RTuner wrote:
Aluminum has a tendency to "flake" particles off when in contact with harder metals, such as the spring end, as you now plan, especially if the aluminum is "indexed" into the spring. I suggest that the aluminum tube is left flat cut on its ends, and a stainless steel or hardened steel flat washer is used against the tube end and the spring and fork cap. You sure don't really want any of those aluminum wear off particles to migrate down into the dampers.


Good point thanx for the heads-up, possibly it'd be best to use nylon then as Ja-Moo suggested.

_________________
'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia


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 Profile  
 
Ja-Moo
 Post subject: Re: Static Sag 71 H1A
PostPosted: Fri Mar 02, 2012 12:28 pm 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
And easier to "adjust"....... :P

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