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September 30th, 2007, 02:49 AM   #1
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Hello from downunder , I am a new comer to the world of Husabergs. I have had the 650 for about 4 months now and like it very much . This site is great with all the info that is available. After a few rides on the bike I came to the conclusion the suspension was not set up right, on inspecting the clickers I found that the previous owner had wound them up to the max. After resetting to the manual things were better, but the front still seemed to hard so I have dissembled the forks to check on how much preload is on the spring. The manual for the 05 says zero preload for the fs model . I checked the Owner`s Doc and it shows how to check the preload by assembling the rod, spring, spring cap and cartridge on the bench with no packing I have done this with the compression adjuster backed right out, and the spring is under about 10mm compression. ( spring length = 485mm, from inside of spring cap to spring seat =475mm with adjuster wound right back.)This is not including 15mm of spacers and 4.5mm of preload that was on the adjuster. So I reckon there was about almost 30mm of compression on the spring. I am not sure if the 15mm of spacers were not added by the previous owner, without these there is still 10mm compression, I will not be putting the spacers back in I also noticed on refilling one litre of oil is not enough. Anyway will have to wait to Tuesday to get some more. Am looking forward to ride again to see if it makes a difference. If anyone can confirm these conditions with bike I would be interested to know. Fork model #14457A03 Cheers and thanks for a great site, Harvey.
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September 30th, 2007, 04:27 AM   #2
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Even 10 mm of spring preload sounds like too much for my ears. I have the 43mm fork with preload adjusters. Having tried different settings I ended up at 3 mm of preload. I can't tell the difference of settings between 0 to 4 mm, but much more than that and I'm not happy. Not that 5 to 6 mm would be unrideable. The springs are not exactly the same lenght so they throw in different spacer washers at assembly to compensate for it. I don't know how much spring preload your fork is supposed to have. It takes about a liter to fill both 43 mm forklegs but I always overfill and waste some oil so in the end I think about 1.2 liter is used. If the oil is relatively new in the fork and I want to do adjustments, whatever needs adjustment is taken out without draining the oil. There is a description on how it is done in this thread http://www.husaberg.org/index.php?na...&p=54519#54519 . Maybe you'll not succeed to do it the first time but you'll eventually figure it out. If it's only the base valve that needs adjustment the entire bike can be turned upside down and the oil won't run out when you remove them. The bike is used for enduro only.

Regards.
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September 30th, 2007, 07:21 PM   #3
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Hi Smorgasbord, Thanks for the reply, the owners manual for the 05 fs says zero preload, the 06 fs manual says 22mm??? The only way I am going to get less than 10mm is if I take the interm. ring, part 39 in the part pdf out (It has 3 legs)and put a flat washer in. Part 36 could also be removed.(2,5 plastic flat washer) These are found at the base of the spring. Would bring the preload down to about 3-4mm. Not sure if these should be changed?
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October 7th, 2007, 04:22 AM   #4
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Well I have been out for another test ride today, and all a bit better, but still to hard for the ridding that I do. I have 10mm compression on the springs but think I may be able to reduce it to 4mm by modifying the bottom washer , then softening the rear to suit. Means pulling the forks apart again. Will report back latter with results. I ride on winding hills roads(sealed) with an average surface quality not doing any major jumps so don`t need big suspension.
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October 19th, 2007, 08:48 AM   #5
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HELLO, I have the pre lode on the forks down to 6mm now by modifying the bottom 3 legged washer and removing the above plastic washer. Haven`t been for a ride yet but when I sit on the bike it sag equal front and back. It is a long way from how it was set up when I got the bike. Feels good , might ride tomorrow let yous know how I go.
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October 27th, 2007, 04:42 AM   #6
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Well i have been out a couple of times now and it all good, much better now no more harshness. Fine tuning from now on.
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December 16th, 2007, 03:01 AM   #7
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Have backed the compression and rebound off about 5 clicks from factory setting with good result. Front wheel no longer feels heavy over bumps. I have changed the steering stem offset from factory 16mm to 18mm but will change it back as the bike seems to turn in to curves too quickly, putting me of line this is my biggest problem at the moment. Have no pushing in corners that is often talked about since softening front springs. Also took a look at swingarm bushings, they had .1mm clearance on the bolt made some new ones that have no clearance,No weaving under power now. Made the OD 22.03 also.
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December 16th, 2007, 03:30 AM   #8
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clever stuff harvey

i remember that they had the same trouble on the first GSXR1100Rs in the eighties. bike had a weave so bigger pins were made - weave stopped.

as the doc says - up to around 6mm preload is said to be the 'sweet spot'.

i wish i could help you with suggested shim stacks etc but we have virtually no information on SM suspension here. we can perhaps point you in the right direction though....

regards

Taffy
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December 16th, 2007, 03:55 AM   #9
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Thanks Taffy, I learn t about weave and how to cure on a z1 years ago. Not sure why the berg had so much spring preload to start with, can only think it has something to doing jumps? maybe. I have no idea on how to adjust shim stacks and what that would achieve but any advice would be looked at. When I had the forks apart noticed that the shim stacks were staked over so I didn`t investigate further. Oh the 5 clicks I backed the adjusters off was only a guess as it occurred to me that with less spring I might require less compression and rebound. Feel free to correct my thinking if I have that wrong. Thanks Harvey.
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December 16th, 2007, 03:58 AM   #10
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Great results! The softening of spring s was by softening preload and not by replacing springs, right? Don't you have needle bearings in the swingarm?
What fork oil do you use and what temperatures do you normally get in adelaide on days when you are out riding?
It is quite easy to fine tune cornering on track by adjusting preload on the shock. It is surprisingly easy to do on a Husaberg and doesn't even take a minute once you get the knack of it. Carry an allen wrench (hexagonal) to undo the clamp screw on the shock preload adjuster nut, heave up and balance the bike towards yourself, with the the kickstand and front wheel on the ground and rear wheel in the air, bend over the seat and grab the adjuster nut and rear spring with both hands and spin both simultaneously to adjust the shock preload. Tighten the clamp screw (not very hard), get on the bike and feel the difference for yourself. Adjustments as small as 1/12 of a turn (one notch) is a world of difference, once you're around the sweet spot... and there the bike suddenly gets responsive to rider input.

Shim stacks are staked and on the base valve you just unscrew them. the aluminium will give, you tidy them up with a file afterwards. The rebound stack tap stakes must be filed away before you undo the nuts, this will remove a few tenths of the nut height but that is no problem. Use thread lock on reassembly.

Regards.
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