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Old 04-17-2013, 09:33 AM   #151
kajj OP
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Originally Posted by Bart1 View Post
Your bike is looking fantastic, well done.

Your new shock looks the bees knees, what made you decide to change from the R1 shock, also what is the new shocks stroke and spring rate ??
The old R1 shock was, well old. And I wanted something that was adapted to fit well onto the Versys. And It feels new and reliable. The stroke is the same as the OEM Versys. Spring rate for me (80kg with riding gear) is 190N/mm.

The ride is soft and comfortable. The bike has some static sag standing by itself. The R1 shock was in top position when standing by itself.

And also the needle bearing on the R1 shock started to get bad. So I felt thatit would be a better deal to get a brand new custom built shock then trying to fix the R1.

It looks better to
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Old 04-17-2013, 01:01 PM   #152
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Originally Posted by kajj View Post
Spring rate for me (80kg with riding gear) is 190N/mm.


And also the needle bearing on the R1 shock started to get bad. So I felt thatit would be a better deal to get a brand new custom built shock then trying to fix the R1.

It looks better to
Wow, 190 N/mm, that is very interesting, it is more than standard.

I must admit I am about the same weight as you but have a 136N/mm spring (13.8kg/mm) and have always felt it is too soft,(the back moves around a lot) but if you are getting a smooth ride with your spring maybe I will change.

My needle bearing went too but it is cheap and easy to replace.

Looking forward to a full test report, it would be interesting to hear your XT660 mates views on you bike on how it rides.

Bart1 screwed with this post 04-17-2013 at 01:09 PM
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Old 04-17-2013, 01:34 PM   #153
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Wow, 190 N/mm, that is very interesting, it is more than standard.

I must admit I am about the same weight as you but have a 136N/mm spring (13.8kg/mm) and have always felt it is too soft,(the back moves around a lot) but if you are getting a smooth ride with your spring maybe I will change.

My needle bearing went too but it is cheap and easy to replace.

Looking forward to a full test report, it would be interesting to hear your XT660 mates views on you bike on how it rides.
Yea. I also thought it sounded a bit to much before I had time to mount it. so I asked the german company I bought it from. They said that Wilbers uses a larger piston diameter and that therefore they use a higher spring rate. So I do not know what the result would be if you mounted a 190N/mm spring on the R1. The spring rate feels similar to the roadstar spring I did use on the R1. And that should be about 130N/mm right?
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Old 04-18-2013, 01:10 PM   #154
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Have just looked up the Ohlins spec sheet and they use a 130 N/mm (13.5kg/mm) spring for a XV1700 but this may not be the same as what Yamaha use as standard. I do not understand the bigger piston reasoning for the Wilbur but as long as it works for you that is all that matters.
Maybe someone else can comment on this.
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Old 04-18-2013, 01:24 PM   #155
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Hello kajj,
I'm running out of words for further compliments!
Kind regards, Bambi
Btw: what are you studying? Motorcycle-design?
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Old 04-18-2013, 02:10 PM   #156
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Hello kajj,
I'm running out of words for further compliments!
Kind regards, Bambi
Btw: what are you studying? Motorcycle-design?
Hehe, thanks.

Almost right. I actually got my bachelor degree in automotive engineering a few months ago. My dream is to work as a engineer/designer in the motorcycle industry. Will se how that play out.

How is the DR big coming along?
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Old 04-18-2013, 02:11 PM   #157
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Originally Posted by Bart1 View Post
Have just looked up the Ohlins spec sheet and they use a 130 N/mm (13.5kg/mm) spring for a XV1700 but this may not be the same as what Yamaha use as standard. I do not understand the bigger piston reasoning for the Wilbur but as long as it works for you that is all that matters.
Maybe someone else can comment on this.
Yea I am curious about this myself. I will do some research and get back to this.
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Old 04-18-2013, 07:14 PM   #158
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Thumbs down

"They said that Wilbers uses a larger piston diameter and that therefore they use a higher spring rate. "

Total BS !!!!!!!!!!!!!!

As the designer and Manufacturer of "Motorsport Air Shocks" in the early 70's, Only the diameter of the shaft can make any difference in the spring rate.

My shocks used NO springs. The gas pressure in the shock pushes on the shaft to push it out and hold the bike up. With a 1" shaft, my shocks used 150-300 pounds of pressure and it built up to 900-2100 when the shock was compressed.

Don
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Old 04-19-2013, 03:59 PM   #159
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Hello kajj,
so you can show this bike as your visiting-card!
Hopefully, my Big will be back together in one piece and running this weekend. For German circumstances, we had a really long and freezing cold winter. As there's no stove in my barn, not to mention outside of it, I just could restart work on the bike a few days ago. Today I got the exhaust pipe back on it with a self-made surplus copper-ring to seal the connection of pipe and silencer. Just small things, just small steps compared to the rush of mods you did on your bike. Now I will get mine completed again and than I'll make small changes in small steps. Next point on the list is to mod bike to accept the speedo-/rev-counter-combo of it's follower. These are nice round instuments nicely covered by brushed aloy housed in what you could call a 'double-cup'. No comparison to the ugly, rectangular original ... Fixing of a road-book behind the screen. And perhaps exchanging the upper part of the fairing against the one you're already using. There's also a change of the rear-light on the list. And twin-headlights, even, if the original fairing stays with the bike.
Kind regards, Bambi
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Old 04-20-2013, 01:15 AM   #160
kajj OP
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Hello kajj,
so you can show this bike as your visiting-card!
Hopefully, my Big will be back together in one piece and running this weekend. For German circumstances, we had a really long and freezing cold winter. As there's no stove in my barn, not to mention outside of it, I just could restart work on the bike a few days ago. Today I got the exhaust pipe back on it with a self-made surplus copper-ring to seal the connection of pipe and silencer. Just small things, just small steps compared to the rush of mods you did on your bike. Now I will get mine completed again and than I'll make small changes in small steps. Next point on the list is to mod bike to accept the speedo-/rev-counter-combo of it's follower. These are nice round instuments nicely covered by brushed aloy housed in what you could call a 'double-cup'. No comparison to the ugly, rectangular original ... Fixing of a road-book behind the screen. And perhaps exchanging the upper part of the fairing against the one you're already using. There's also a change of the rear-light on the list. And twin-headlights, even, if the original fairing stays with the bike.
Kind regards, Bambi
Sounds good. Keep it up.
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Old 04-20-2013, 01:31 AM   #161
kajj OP
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Quote:
Originally Posted by Salsa View Post
"They said that Wilbers uses a larger piston diameter and that therefore they use a higher spring rate. "

Total BS !!!!!!!!!!!!!!

As the designer and Manufacturer of "Motorsport Air Shocks" in the early 70's, Only the diameter of the shaft can make any difference in the spring rate.

My shocks used NO springs. The gas pressure in the shock pushes on the shaft to push it out and hold the bike up. With a 1" shaft, my shocks used 150-300 pounds of pressure and it built up to 900-2100 when the shock was compressed.

Don
Hmm ok. Thanks for the input.

What du you meen with the shaft? The shaft holding the piston inside the shock cylinder?
Please explain more!

Did some research the other day. With the Roadstar spring (at 13.8kg/mm I think) the R1 shock topped out in free sag but I did get the right amount of static sag. And this with no preload on the shock. Except that the Roadstar spring is longer then the R1 spring meaning it will have some preload when compressed and mounted on the shock.

With the 19kg/mm spring on the Wilbers shock and almost no preload. I do get a few milimeters of free sag and the right amount of static sag.

Could it only be that the R1 spring was to soft and that I did not noticed this from the beginning until I tried the Wilbers shock with the higher spring rate? Or is there also a difference in the shocks allowing a higher spring rate to be used on the wilbers?
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Old 04-21-2013, 02:11 PM   #162
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Hello kajj,
Miss Marlboro is up and running again. Just a few things left like tank- and engine-guard-fixing and then we're up and running again!
Kind regards, Bambi
PS: Why is Finland so far away?
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Old 04-22-2013, 08:26 AM   #163
kajj OP
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Originally Posted by Bambi View Post
Hello kajj,
Miss Marlboro is up and running again. Just a few things left like tank- and engine-guard-fixing and then we're up and running again!
Kind regards, Bambi
PS: Why is Finland so far away?
Great

Finland It is pretty close from where I am
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Old 05-18-2013, 10:17 PM   #164
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I've just finished reading this thread from beginning to end and I have to say it is now firmly planted as one of my favorite builds.

Working in your room, making your own brackets and such and having it all come together in a great looking bike, jeez mate that's awesome.

I look forward to seeing more pics and vids of this beast out on the tracks!
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Old 05-19-2013, 01:04 AM   #165
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I've just finished reading this thread from beginning to end and I have to say it is now firmly planted as one of my favorite builds.

Working in your room, making your own brackets and such and having it all come together in a great looking bike, jeez mate that's awesome.

I look forward to seeing more pics and vids of this beast out on the tracks!
Thank you for those kind words. I will hit some gravel roads today and will bring the camera to shoot some photos.
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