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Offline Noggie

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Re: Anyone re-sprung a DDC bike?
« Reply #20 on: November 01, 2016, 09:41:11 PM »
I have a video going down a mountain pass with hairpins, and my shock it typically compressing down to 20mm under "normal" braking, I haven't done much hard braking (like emergency braking) on this bike.

The problem is, that when the shock is compressed that much, there is not much room for movement should I hit a bump.

This picture shows me braking into a hairpin, I will admit I am braking a fair bit, but not what I would consider hard, and there is not much left before I bottom out.

Offline jucam

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Re: Anyone re-sprung a DDC bike?
« Reply #21 on: November 01, 2016, 11:08:12 PM »
Same problem here with 110kg,
Hard braking but not maximum baking on this picture.

If i recall right when i went to my local suspension specialist we went from a stock 7.5kg/mm to a 10.5 rear spring and planned to investigate on the front ones during the winter.

I believe the spring was the same as the one they use on a 1199 or 1299

In Tartiflette we trust

Offline Blade.RRunner

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Re: Anyone re-sprung a DDC bike?
« Reply #22 on: November 02, 2016, 10:22:38 AM »
@Noggie: I can see now what you're talking about. If that's just normal braking, not emergency braking, you're right. I guess that's your karmic punishment for having roads and scenery like that near you.   :150: I need to ride quite a few hundred kms to see sg like this.

On a more serious note, it's no surprise that a bike originally designed for an 85-kg frame will suffer from 115 kg (as jucam indicated). However, I understand our bike's fork internals necessitate a peculiar spring, which is not easily available in different weights. In this case (or, in general, if rider weight/spring rate is just a little bit off), I'd try increasing oil height in the forks. The air gap in there works as a highly progressive secondary spring mostly giving support in the last 1/3 of the stroke.
Sorry if I'm stating the obvious here.

Offline Noggie

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Re: Anyone re-sprung a DDC bike?
« Reply #23 on: November 02, 2016, 12:45:47 PM »
Hehe, Yeah I probably live in one of the more spectacular places in Norway, the roads around here is a motorcyclists dream.

I was riding down this road, its 1-1,5 hour from my home.


I just made a quick video riding down that road, and you can see my fork is very often compressed a lot.
And every time I accelerate it extends fully, so there is a lot of movement in the fork when I am riding.

feature=youtu.be

Offline jucam

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Re: Anyone re-sprung a DDC bike?
« Reply #24 on: November 02, 2016, 02:05:37 PM »
*Originally Posted by Noggie [+]
Hehe, Yeah I probably live in one of the more spectacular places in Norway, the roads around here is a motorcyclists dream.

I was riding down this road, its 1-1,5 hour from my home.

I just made a quick video riding down that road, and you can see my fork is very often compressed a lot.
And every time I accelerate it extends fully, so there is a lot of movement in the fork when I am riding.




Haha Lysebotn what a coincidence!
I was there this summer to work on a new powerline construction.

You are probably seeing our work truck in the area at the moment (Valard Construction)
In Tartiflette we trust

Offline BillB

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Re: Anyone re-sprung a DDC bike?
« Reply #25 on: November 02, 2016, 03:42:43 PM »
Wow!  That first picture is absolutely stunning!  Is that an actual photograph or a painted picture?

Noggie, you are one lucky guy!

Offline Noggie

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Re: Anyone re-sprung a DDC bike?
« Reply #26 on: November 02, 2016, 05:04:53 PM »
*Originally Posted by jucam [+]

Haha Lysebotn what a coincidence!
I was there this summer to work on a new powerline construction.

You are probably seeing our work truck in the area at the moment (Valard Construction)

Hehe, Yeah doesn't get much better than that :)

I was only there once this summer, so I did not notice any work trucks unfortunately, but there is a lot of construction going on up there with the new power plant.
I live just 20km south of Stavanger, so it's not far from me.

*Originally Posted by BillB [+]
Wow!  That first picture is absolutely stunning!  Is that an actual photograph or a painted picture?

Noggie, you are one lucky guy!

Its a photo, but my guess is that it has been through photoshop quite a bit.
If you Google Lysebotn or Lysefjorden you will find some really nice pictures and videos.
It holds two of Norway's most popular tourist attractions, the "Pulpits rock", and the "Kjerag boulder"

Offline skapan

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Re: Anyone re-sprung a DDC bike?
« Reply #27 on: November 03, 2016, 12:49:29 PM »
Something I saw on here, or maybe another forum - more than one rider has put a standard RR fork leg on the right side. It has compression and rebound damping and can be tuned properly to supplement the DDC for heavier riders.  Cheaper than full Ohlins.

Offline JohnnyBMWgood

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Re: Anyone re-sprung a DDC bike?
« Reply #28 on: November 03, 2016, 02:19:25 PM »
Probably only internals will do as well.
But I think this is not a one buy and problem solved.
My guess you'll need some afterwards tuning of air chamber to get it right.
I resprung my DDC and needed to play with air chamber as well, new springs where OK but standard air chamber made my travel shorter(to progressive!).
So you will need either proper equipment and skills or a suspensiontuner who will help you perform this job couple of times at least.

*Originally Posted by skapan [+]
Something I saw on here, or maybe another forum - more than one rider has put a standard RR fork leg on the right side. It has compression and rebound damping and can be tuned properly to supplement the DDC for heavier riders.  Cheaper than full Ohlins.

Offline kinada

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Re: Anyone re-sprung a DDC bike?
« Reply #29 on: November 03, 2016, 03:59:36 PM »
*Originally Posted by Blade.RRunner [+]
Other than not being able to achieve BMW-spec front sag, do you experience any adverse effects (bottoming out, etc.)?

I have a trusty old cable tie on one front fork stanchion. According to it, the forks bottom out. Thats in Dynamic/Road in either soft or normal. I'm 90kg-ish in my birthday suit and ride in full leathers.

 


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