Rear shock confusion

Got a technical query? Found another 0.02bhp? Ask/tell the world.

Moderators: Paul, slparry, Gromit

fontana

Rear shock confusion

Postby fontana » Mon May 22, 2017 5:12 pm

Bit of tech advice would be helpful chaps.
It's my 2000, R1100RS.
Was out with the Mrs yesterday and a couple of times cornering at moderate lean, the centre stand dug in.
I noticed it only on bumpy road surfaces.
A bit disconcerting as my Wife only ways about 7 stone, and we had no luggage on board.
So I looked at the rear shock and there seems to be no facility to increase spring preload.
All I can see at the bottom end is a little knurled knob with a tiny allen bolt through the middle.
It looks like it can be turned but there are no markers on it to say which way to go for hard or soft.
I suppose common sense say's clockwise to increase, but I'd rather be sure.
I've never seen a shock like it and was wondering if you guys have the same unit on your 1100S's.
I should add that my bike is a Japanese import.
Any advice gratefully received.

User avatar Wales
Daimac
Posts: 16
Joined: Tue Jan 31, 2017 5:51 pm
Location: Near Bangor North Wales

Re: Rear shock confusion

Postby Daimac » Mon May 22, 2017 6:46 pm

Is it a goldy/orange coloured Ohlins?
D.

BMW R1100S - Grey
BMW R100RS - Blue/Silver
BMW K1100RS - Red/No longer mine
BMW K100RT - Blue/ No longer mine
BMW R60/7S Black/Gold/ No longer mine

User avatar Great Britain
Britisherspy
Posts: 499
Joined: Sat Apr 03, 2010 7:19 pm
Location: Lichfield

Re: Rear shock confusion

Postby Britisherspy » Mon May 22, 2017 8:16 pm

Looks like there is a stepped preload adjuster ring at the bottom, the piece with the rectangular holes going round it.
s-l1600.jpg
s-l1600.jpg (556.07 KiB) Viewed 5058 times

https://ibb.co/jFd3DF

Australia
Jeff Highland
Posts: 87
Joined: Thu Jan 12, 2017 10:03 pm

Re: Rear shock confusion

Postby Jeff Highland » Mon May 22, 2017 8:28 pm

That's What is on my stock '93

fontana

Re: Rear shock confusion

Postby fontana » Mon May 22, 2017 9:11 pm

I'll take a photo of it tomorrow.

fontana

Re: Rear shock confusion

Postby fontana » Mon May 22, 2017 9:12 pm

Britisherspy wrote:Looks like there is a stepped preload adjuster ring at the bottom, the piece with the rectangular holes going round it.
s-l1600.jpg
https://ibb.co/jFd3DF


Mines nothing like that.
No stepped adjuster.
I wish it were that simple
:x

User avatar Wales
Daimac
Posts: 16
Joined: Tue Jan 31, 2017 5:51 pm
Location: Near Bangor North Wales

Re: Rear shock confusion

Postby Daimac » Mon May 22, 2017 9:18 pm

This is what's on mine ..... https://store.bobsbmw.com/product/ohlin ... -2005-rear

There's a link for the manual on the page.
D.

BMW R1100S - Grey
BMW R100RS - Blue/Silver
BMW K1100RS - Red/No longer mine
BMW K100RT - Blue/ No longer mine
BMW R60/7S Black/Gold/ No longer mine

fontana

Re: Rear shock confusion

Postby fontana » Wed May 24, 2017 7:46 pm

Daimac wrote:This is what's on mine ..... https://store.bobsbmw.com/product/ohlin ... -2005-rear

There's a link for the manual on the page.


Nothing as shiny as that either.
I wish
:shock:
Anyway figured it out.
There's a little allen bolt on the bottom of the shock body that you turn clockwise to increase damping force.
I've turned it all the way.
Hopefully that'll work because there is no spring preload adjustment.

User avatar Wales
slparry
Moderator
Posts: 6414
Joined: Sat Sep 20, 2008 7:19 pm
Location: Wrexham
Contact:

Re: Rear shock confusion

Postby slparry » Wed May 24, 2017 9:10 pm

should be like this one with a remote preload adjuster if standard

http://www.ebay.co.uk/itm/BMW-R1100RS-2 ... 7675.l2557
--
Steve Parry
“Never argue with a fool, onlookers may not be able to tell the difference.” ― Mark Twain

Current fleet: '14 F800GS, '87 R80RS, '03 R1100S BoxerCup, '15 R1200RT LE Dynamic, '90 K1

fontana

Re: Rear shock confusion

Postby fontana » Wed May 24, 2017 9:46 pm

slparry wrote:should be like this one with a remote preload adjuster if standard

http://www.ebay.co.uk/itm/BMW-R1100RS-2 ... 7675.l2557



Nope it's not that one.
As I said, my bike is a Japanese import.
In the handbook there are two types of rear shock illustrated.
The one on the right is the one you suggested, but mine is the one on the left, without the remote adjuster.

Imagephoto uploading

Australia
Jeff Highland
Posts: 87
Joined: Thu Jan 12, 2017 10:03 pm

Re: Rear shock confusion

Postby Jeff Highland » Wed May 24, 2017 10:15 pm

It's not two different types of shock illustrated, it's two different adjustments.

The left side illustration shows the location for the rebound damping adjustment, the right side illustration shows the location of the remote preload adjustment on the right side of the bike, which works via a hydraulic hose to the top of the unit.
I have one sitting here ready to go on my early RS to replace the non remote original.
If yours is missing the remote, it may have been removed or the unit changed for aftermarket.

Anyhow, adjusting the damping is unlikely to help.

User avatar Great Britain
The Teutonic Tangerine
Posts: 1637
Joined: Mon Jan 28, 2008 3:18 pm
Location: Essex
Contact:

Re: Rear shock confusion

Postby The Teutonic Tangerine » Thu May 25, 2017 9:47 am

Britisherspy wrote:Looks like there is a stepped preload adjuster ring at the bottom, the piece with the rectangular holes going round it.
s-l1600.jpg
https://ibb.co/jFd3DF


You will need a "C" spanner to adjust pre-load.
There would appear to be a surfeit of prolixity and sesquipedalian content today please do not use a big word when a singularly un-loquacious and diminutive linguistic expression will satisfactorily accomplish the contemporary necessity

fontana

Re: Rear shock confusion

Postby fontana » Thu May 25, 2017 12:08 pm

Here's my rear shock.
There is a little cut out but that's just to allow for the damping adjuster screw.
Around the other side it's round, so nothing to grip with a C spanner.
I did wonder about that nut at the bottom and am tempted to try turning that
Any thoughts ?

Imageimage hosting 10mb limit

User avatar Great Britain
The Teutonic Tangerine
Posts: 1637
Joined: Mon Jan 28, 2008 3:18 pm
Location: Essex
Contact:

Re: Rear shock confusion

Postby The Teutonic Tangerine » Thu May 25, 2017 2:15 pm

OK so looking at the photo then yes the Damping adjuster is the screw thing.
Looking at the body of the Shock there is no threading or obvious signs of how to adjust spring pre-load at this end of the damper.

the standard shock has the pre load adjusted remotely from the top but if you have no remote adjuster at the top I can't see how you could manually screw down an adjuster ring at the top as there's no room to swing a C spanner - what does the top of the shock look like with seat off.
There would appear to be a surfeit of prolixity and sesquipedalian content today please do not use a big word when a singularly un-loquacious and diminutive linguistic expression will satisfactorily accomplish the contemporary necessity

Australia
Jeff Highland
Posts: 87
Joined: Thu Jan 12, 2017 10:03 pm

Re: Rear shock confusion

Postby Jeff Highland » Thu May 25, 2017 4:35 pm

I may be wrong but it looks like that nut could be a lock nut for an overall length adjustment, rather than preload.
You may need to disconnect the shock to wind down the bottom yoke after releasing the locknut.


Return to “Boxertech”

Who is online

Users browsing this forum: No registered users and 17 guests