OK, I called Dave Quinn re the rear shocks and found that the travel
on the Hagon 33007s is 3.2", so total sag of 27 mm is actually 33% of
that, bang on the money! (or close enough)
But, I cannot find any info as to the front fork travel, which he
says is usually in the service or owners manual specifications. One
should look at 25-33% of that as a rough rule of thumb for sag, too,
he says.
Does anyone have any ideas?
Ruari
--- In W650riders@..., Ruari McLennan <r.mclennan@...>
wrote:
How do I determine, "full travel?"
Ruari
----- Original Message -----
From: Jonhaddock@...
To: W650riders@...
Sent: Wednesday, July 04, 2007 1:57 AM
Subject: Re: [W650riders] Sag or Preload; & suspension
'Sitting on' sag should be approximately 1/4 of full travel.
Pre-load is simply turning a ring to pre-compress the spring so
when you are moving the ring up to squash the spring you are
increasing pre-load. Bear in mind all you do is limit the low speed
springing. Once the spring starts to compress it compresses at the
normal rate irrespective of preload settings because springs compress
linearly.
Hi, I popped by the motorcycle co-op today and they measured my
W650 preload "sag."
They are not terribly familiar with older style bikes, they are
a sportbike/racer shop.
I have Hagon progressive front fork springs, and Hagon 20 Kg.
rear classic shocks.
I weigh 198 lbs dry and 217 on the bike with gear.
They suggested 30 mm front; and 35 mm. rear was right for
sportbikes.
My results were: Front 50 mm.; and rear 27 mm.
Any comments from you folks? I wonder if sportbike
measurements are applicable here, particularly when the W650 rear
shocks are so vertical by comparison.
Ruari McLennan
Victoria BC
