Date: 28-03-24  Time: 11:08 am

Author Topic: BMW S1000RR shock conversion question  (Read 33953 times)

pitternator

  • "I'll be back"
  • GP Hero
  • ******
  • Posts: 6,228
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #50 on: 19 May 2014, 12:24:40 pm »
I chuckle a bit when folk call the OE shock rubbish. It isn't , its just got way too weak a spring . Ktech  and others did a rebuild which actually worked quite  well 10 yrs back. The full monty K tech is as good as anything out there.... they claim up to ohlins standard..... The OE shock in the picture is maybe 10 to 12 yrs old, never cleaned, never looked after .  Hope you look after the RR one.
Incidentally , just why are so many RR shock about ?...is it leftovers from racers  fitting decent stuff like K tech shocks !   :lol

But if its cheap and you like it , go ahead. Personally the weakness in all this fitting of shocks from other bikes is setting yer bikes up, and hoping you have the right spring to get the sag right. You have to get the sag right before you even consider damping adjustments. I do applaud ingenuity and perseverance. But do remember if you have  a knackered shock on yer bike..ANYTHING will feel marvellous. But it could still be far from ideal. Ask me how I know !

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #51 on: 19 May 2014, 06:03:34 pm »
I never considered the OEM shock rubbish, I thought it was a pretty good shock, but as you say the spring was way to soft. However when I saw a  zero miles 2012 S1000rr for sale in the USA for $120 including postage, I bought it. A new spring was £105 including postage in the UK. I decided to try the S1000rr option.
The advantage of that shock is that is raises the rear 10mm without any modification to the dog bones and improves the turn in on the fazer.
Since it is made by Sachs is is also a good quality item and was much more cost effective than buying a new spring or shock. :)




NorthWestern

  • GP Hero
  • ******
  • Posts: 1,028
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #52 on: 20 May 2014, 04:43:25 pm »
Is that the ktech rebuild which replaced the adjusters, shim stack, shock body etc?  I doubt they can offer anything in the same price bracket really.


Racers don't replace their shocks with a £300 "Sport" shocks they get the big ones ~£1000 which isn't really a good comparison.  For less that £100 you can have a modern design shock with hardly any miles on it and a spring suited to your weight. then you can play with the settings which some folk enjoy doing.



Intentionally left blank

JoeRock

  • WSB Pack Hound
  • *****
  • Posts: 907
    • Main bike:
      FZS600 02-03
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #53 on: 23 May 2014, 02:09:04 am »
Would someone with one of these be kind enough to let me know a few measurements?


I need the length of the shock, as close as possible, from centre to centre mounting holes
Also the weight of the spring on there as stock
and the measurements accross the mount at the top, and inside the bottom?

Basically, I'm considering fitting one to my zx9r if it'll fit and its about right!

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #54 on: 23 May 2014, 08:45:37 am »
http://foc-u.co.uk/index.php/topic,4976.msg132497.html#msg132497

I can check the rest tonight as I have one in the garage

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #55 on: 24 May 2014, 01:53:39 pm »
Finally got around to fitting the spacer to the S1000RR shock to enable me to set the static sag to my liking.
See picture it fits nicely

Joe Rock I have 2 shocks and both are slightly different top and bottom one is .15 more and the other is .15 less then the 29.5mm as the average of both measurements


JoeRock

  • WSB Pack Hound
  • *****
  • Posts: 907
    • Main bike:
      FZS600 02-03
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #56 on: 24 May 2014, 05:32:58 pm »
Cheers for that Unfazed!


Hadn't realised the info was on there already!  :o


Unfortunately it's way to short for mine, Zx9 is about 337mm so something with a 20mm drop would have to be modded, which would probably make it as expensive again!

bludclot

  • WSB Pack Hound
  • *****
  • Posts: 539
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #57 on: 11 June 2014, 06:22:03 pm »



i had these made up from stainless steel at my local machine shop:





here's the longer shoulder of the bottom bolt and the standard bolt against the bmw shock:





many thanks to unfazed for his measurements, spot on.


i had two sets made so one is spare. it owes me 15 so if anyone wants it..... my machine shop man said that he can make more sets if required.
is it clean enough?

Paolo_69

  • Cager in Training
  • Posts: 2
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #58 on: 31 August 2014, 10:41:12 am »
Hello there from Italy  8)
after reading about this mod, I have replaced my original shock with a S1000RR '12 with 4000 km.
The shock works very good (everything works better than the original), the only proble is that with the shock fully preloaded I have a statit sag of 27 mm (against a reccomended 10-15) and a rider sag of 55 (against a reccomended 30-40). My weight is 90 kg
This make me thinking that the spring rigidity is correct, but the spring is too short, it'd be 10-15 mm longer.
What you think? Could I resolv with a 10-15 mm spacer under the spring?


ps sorry for my bad english...
« Last Edit: 31 August 2014, 10:42:23 am by Paolo_69 »
Whatever we're talking about, a couple of boobs are never OT
Bandit inside

JoeRock

  • WSB Pack Hound
  • *****
  • Posts: 907
    • Main bike:
      FZS600 02-03
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #59 on: 01 September 2014, 07:45:59 pm »
Hello there from Italy  8)
after reading about this mod, I have replaced my original shock with a S1000RR '12 with 4000 km.
The shock works very good (everything works better than the original), the only proble is that with the shock fully preloaded I have a statit sag of 27 mm (against a reccomended 10-15) and a rider sag of 55 (against a reccomended 30-40). My weight is 90 kg
This make me thinking that the spring rigidity is correct, but the spring is too short, it'd be 10-15 mm longer.
What you think? Could I resolv with a 10-15 mm spacer under the spring?


ps sorry for my bad english...

You need a stiffer spring mate, by quite some way too!

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #60 on: 08 September 2014, 09:28:03 pm »
Hello there from Italy  8)
after reading about this mod, I have replaced my original shock with a S1000RR '12 with 4000 km.
The shock works very good (everything works better than the original), the only proble is that with the shock fully preloaded I have a statit sag of 27 mm (against a reccomended 10-15) and a rider sag of 55 (against a reccomended 30-40). My weight is 90 kg
This make me thinking that the spring rigidity is correct, but the spring is too short, it'd be 10-15 mm longer.
What you think? Could I resolv with a 10-15 mm spacer under the spring?


ps sorry for my bad english...

Does your shock have the silver or bronze coloured shock fork. The silver one allow adjustement of the sag to 20mm the bronze one only allow adjustement of the sag to 27mm.

I did fit a 10 mm spacer to my silver forked one to allow more adjustment, but found that adjusting the sag to 15mm made it hop over bumps and set it back to 20mm. I weigh about 87Kg.

Read back through my posts


unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #61 on: 16 September 2014, 03:35:24 pm »
Odd, mine went straight in.  The only thing I did was make some new bushes for the top, I didn't fancy washers so removed the original bushes and made new ones.  (and put a stronger spring on). The bottom bolt went through fine, like standard.

Do you have the dimensions and/or a picture of the one you made up? I was thinking of doing the same.

NorthWestern

  • GP Hero
  • ******
  • Posts: 1,028
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #62 on: 16 September 2014, 03:42:59 pm »
No pics I'm afraid.  It was simply a "hat" type spacer.  Basically measure the std bush but with a 2mm thick rim.  This is in two parts (both identical), one for each side.  I think the standard one is also in two parts.


Thats about all I remember really...
Intentionally left blank

Paolo_69

  • Cager in Training
  • Posts: 2
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #63 on: 29 October 2014, 11:22:36 am »
Does your shock have the silver or bronze coloured shock fork. The silver one allow adjustement of the sag to 20mm the bronze one only allow adjustement of the sag to 27mm.

I did fit a 10 mm spacer to my silver forked one to allow more adjustment, but found that adjusting the sag to 15mm made it hop over bumps and set it back to 20mm. I weigh about 87Kg.

Read back through my posts


The shock is a 2012 with silver fork; at last I have used a spring from a R6 shock with a 10 mm spacer, and the shock works great with my weight (95 kg dressed). In this configuration I have obtained a static sag of 15 mm and a rider sag of 35, but I felt the bike too hard; actually I have reduced the preload of 6 mm, with a rider sag of 41 mm, and I feel much more confidence and comfort.
The rebound damping is set to 5, I switch the LS compression damping between 2 and 3 depending on the road; the HS compression damping is 4 as standard, I have no idea how to set this one
Whatever we're talking about, a couple of boobs are never OT
Bandit inside

CatalinU

  • Weekend Warrior
  • ***
  • Posts: 112
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #64 on: 19 June 2019, 07:34:01 pm »
So wich one should I choose? The one with the silver fork or the bronze fork?

PieEater

  • GP Hero
  • ******
  • Posts: 1,359
  • Thank You Melton Mowbray, Yamaha & Ivan
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #65 on: 19 June 2019, 09:21:02 pm »
Sheesh in 4 and a half years I'd be surprised if you could tell the difference  :eek
« Last Edit: 19 June 2019, 09:21:44 pm by PieEater »

coffee

  • GP Hero
  • ******
  • Posts: 2,251
  • Phil Bradbury,like road racing,ireland,music
    • Main bike:
      FZ1 Naked Gen2
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #66 on: 19 June 2019, 11:31:36 pm »
Does your shock have the silver or bronze coloured shock fork. The silver one allow adjustement of the sag to 20mm the bronze one only allow adjustement of the sag to 27mm.

I did fit a 10 mm spacer to my silver forked one to allow more adjustment, but found that adjusting the sag to 15mm made it hop over bumps and set it back to 20mm. I weigh about 87Kg.

Read back through my posts


The shock is a 2012 with silver fork; at last I have used a spring from a R6 shock with a 10 mm spacer, and the shock works great with my weight (95 kg dressed). In this configuration I have obtained a static sag of 15 mm and a rider sag of 35, but I felt the bike too hard; actually I have reduced the preload of 6 mm, with a rider sag of 41 mm, and I feel much more confidence and comfort.
The rebound damping is set to 5, I switch the LS compression damping between 2 and 3 depending on the road; the HS compression damping is 4 as standard, I have no idea how to set this one



my brain's just froze  :lol
never look down on anyone unless you're helping them up.

Stinka

  • Weekend Warrior
  • ***
  • Posts: 111
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #67 on: 24 July 2019, 01:59:46 pm »
So wich one should I choose? The one with the silver fork or the bronze fork?


I’ve got the bronze one. It’s epic

CatalinU

  • Weekend Warrior
  • ***
  • Posts: 112
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #68 on: 23 November 2019, 05:41:55 pm »
Anyone knows what bolt should i look for to reuse with the BMW shock?

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #69 on: 23 November 2019, 09:14:33 pm »
A 12mm bolt with the shoulder 41.5mm long, you can cut it to clear the dog bones and leave a few mm more than the nut..Important bit is the 41.5mm shoulder

CatalinU

  • Weekend Warrior
  • ***
  • Posts: 112
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #70 on: 24 November 2019, 04:25:12 pm »
OK, perfect, thanks very much.

CatalinU

  • Weekend Warrior
  • ***
  • Posts: 112
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #71 on: 28 November 2019, 04:51:10 pm »
A 12mm bolt with the shoulder 41.5mm long, you can cut it to clear the dog bones and leave a few mm more than the nut..Important bit is the 41.5mm shoulder


Any tip on how to adjust the shock? I am 100kg and riding solo. Any start point will help

unfazed

  • GP Hero
  • ******
  • Posts: 5,309
  • Never ride faster than your guardian angel can fly
    • Main bike:
      FZS600 02-03
    • - FZS1000 05-06, Serow 2000
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #72 on: 28 November 2019, 04:55:37 pm »
Is it the one with bronze bottom fork or the silver bottom fork?

NorthWestern

  • GP Hero
  • ******
  • Posts: 1,028
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #73 on: 28 November 2019, 06:15:37 pm »
Catalin, a new spring would be the first thing to get.
Intentionally left blank

CatalinU

  • Weekend Warrior
  • ***
  • Posts: 112
    • Main bike:
      FZS 1000 Gen1
    • View Profile
Re: BMW S1000RR shock conversion question
« Reply #74 on: 30 November 2019, 08:00:12 pm »
Is it the one with bronze bottom fork or the silver bottom fork?


Silver one, 2013 i think