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Old 03-16-2010, 11:25 AM   #6466
Megamoto
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Quote:
Originally Posted by juss
The plastic sleeve on the rear shock is a damn headache - it fills up with mud and water and then the water freezes, leaving me with stuck suspension until spring... Or until the heat gun and some compressed air..

Why the hell does that sleeve have to be there anyway - has anyone removed it? Is any damage going to happen to the shock because of being uncovered?

cheers, juss
Juss,

My sr43 has not got a sleeve. Pictures??
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Old 03-17-2010, 02:11 AM   #6467
Brendan J
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Yeah mine has one too. And it was full of crap when I pulled it all apart months ago. Was wondering the same thing actually do I need it ? but in the end decided to reinstall it to keep the road grim off the shaft.
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Old 03-17-2010, 03:15 AM   #6468
bluesman
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I can only imagine that German-specs DRs for some reason have that sleeve. Belgium-French-Italian (I think) specs do not have it for sure in stock.
Or may be it was some kind of option?
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Old 03-17-2010, 03:36 AM   #6469
vilguy
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well my new shock arrived last night

just need to get a spring for it, i probably have one in the garage but ...

any idea what the stock rear spring rate is...just so i can get in the right ballpark.

Looking forward to getting it on the bike now and giving it a go And then hopefully get the shocks up on my new company website (still in construction) so they will be available to all
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Old 03-17-2010, 05:21 AM   #6470
chris3155
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Hi all
I have been quiet lately but I did get the bike insured so am riding again.
I need to strip the cosmetics off the front end and find a rattle, more like a jingle sounds like my key-ring is made of alloy.
Here are 2 pics of my shock.
It is an sr43a imported to Ireland fron Germany.
Take care be safe
Chris
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Old 03-17-2010, 05:28 AM   #6471
chris3155
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Is it just me or does the chain look a little dry?
Maybe I should ride with people who carry lube.
Or should I refrain from telling myself who I should ride with
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Old 03-17-2010, 05:47 AM   #6472
Brendan J
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Yeah a little dry just a tad thou. But that spring and shock could do with a damn good clean !!!!!!!!!!!!!!!!
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Old 03-17-2010, 07:17 AM   #6473
ppe172
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Giancarlo,

When you move the piston both sets of valves should open and close if you move the crank through 2 rotations. It might be possible to overtighten the decompressor so that it would always hold the right exhaust valve open but
as far as I recall, the decompressor only works on one of the exhaust valves so I would think that the other one should move regardless of what you did to the decomp. Did you loosen the decomp lever bolt before you tried moving the valves? What did the noise sound like? Maybe someone else has some input.

Ed
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Old 03-17-2010, 09:59 AM   #6474
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This is early "simple" prototype version, the final version will have seperate rebound and compression adjusters.

Nice and strong preload adjuster rings, no flimly little things that tear with the c spanners and look rubbish.

Fully rebuildable

I had choice of 12mm or 16mm piston road design.... so i have chosen 16mm of course

Much lighter than the stock shock. This one is longer and with longer stroke than stock, so lifts back of bike up without need for new linkage.

I am machining up some spacers to sit inside the rod eyes so it will sit in the frame nicely.

vilguy screwed with this post 03-17-2010 at 10:38 AM
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Old 03-17-2010, 12:17 PM   #6475
zappa71
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@ vilguy, i have a modified original rear shock with a CR500 spring.. works good

@ ppe172 and Giancarlo, the valve rocker operates both valves and so does the deco unit that just push down one of the arms of the rocker..

but this problem is also being talked about on this forum;

http://www.drbig.info/forum/viewtopi...f=6&p=355#p355
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Old 03-17-2010, 02:39 PM   #6476
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Hey Zappa, stock shock with correct spring might seem to work OK, but you need to compare it with really good shock. The difference can be told even by not very good rider, but if rider is good...
And you can change spring but you can't change damping on stock shock.
And on paved roads difference is shocking too.
Or you did not enjoy that 640 suspension ?

Vilguy, this looks niiice! This might be an answer to DR owners quest on reasonably priced and well built shock!
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Old 03-17-2010, 04:16 PM   #6477
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ahh i have 4 cr500 rear shocks on the shelf *dont as why! lol*

ill rob a spring to give it a go and take it from there if i need harder or firmer spring

i want to order more advanced shock already! but i will wait till i try this.
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Old 03-17-2010, 04:33 PM   #6478
zappa71
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Hey Bleusman, the stock shock damping was modified by a shock specialist.. was cut open, modifeid and welded back.. spring was changed with a progressief CR 500 spring..
a mate of mine has the wilbers spring you have and rides at least as good as i off road but my spring does do the job as good and maybe better at the real bumpy track as his

And my 620/640 KTM Adv is a real different thing, 50kg lighter and that suspension.. it's to easy to ride off road
On the BIG you ride on experience and condition.. on the KTM on the throttle... looking up from the GPS and seeing a mud pool/big pump/hole/loose sand instead of breaking and looking for the best line you just open up the throttle

Ans indeed the project of vilguy looks really good, and a CR 500 spring on it good do the job just fine
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Old 03-17-2010, 05:14 PM   #6479
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Zappa, you absolutely right about spring, if CR500 spring OK for your weight on your bike it will do just fine - but I did not mean Wilbers spring. Wilbers complete shock makes sense, but just spring - I see not much point.
Wilbers shock (as well as WPs and few others) good because it has separate low speed compression damping and high speed compression damping adjustment. E.g. you can set shock to eat bumps easily but at same time you keep controlled steering. But this comes at huge price.
Way too much to afford it and probably not really needed - I was just nuts to buy it, I admit it. I have complete shock, not spring. I did it only because I have it on my other bike too and because sometimes I have to ride for a week 6-8 hours a day on my long tours. I had experience with more-less mid-level Ohlins, with Yamaha-Ohlins stock, with WP mid-level shocks but shock with separate compression damping left me speacheless after first ride on other bike and I am sure will be same on DR (did not do proper testing yet, thou it felt brilliant on small test drive). Well, you can try it in July I hope.
If high-specs aftermarket shock with separately adjustable damping works only as good as well adjusted simple stock shock it only means that owner did not bother setting up his Wilbers/WP/Ohlins/Nitron/Maxton/Penske etc. etc. properly.
Problem Vilguy addressing here is much more important for DR owners than availability of all those superexpensive shocks. It will be adjustable and rebuildable shock with probably price tag that does not cause heart attack
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Old 03-17-2010, 06:07 PM   #6480
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probably haha, nah they will be cheap.

i will also be providing them for many other bikes that have shocks that are impossible to find. Xtz750 for instance

i presently working on website and my plan is to be able to provide different springs with the shocks to suit riders weight
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