Getting to know the R850R

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Galactic Greyhound
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Re: Getting to know the R850R

Postby Galactic Greyhound » Mon Aug 06, 2018 10:59 pm

Very useful Information. Thank you.

The suspension is really stiff. I compared today with F650 on the same road. I see that i can adust the rebound. I will try to set it to maxim slow.
I noticed that the preload adjustment doesn t work. The following days i am going to fill it with oil. Although i am going to keep it to minimum low.

The rear shock hydraulic preload adjuster allows the preload on the shock spring to be set remotely.
It works by having a hydraulic piston unit at the top of the shock spring connected to the remote adjuster.

When the remote adjuster is backed off fully, there is NO pressure on the hydraulic piston unit so the rear shock spring is at its maximum extension and so SOFTEST preload setting.

When the hydraulic preload adjuster knob is screwed clockwise, a piston inside increases the pressure on the hydraulic fluid in the adjuster.
This causes the hydraulic piston unit at the top of the shock spring to compress the shock spring so STIFFENING the shock preload.

If your preload adjuster is therefore NOT working i.e. it has run out of hydraulic fluid, then there is no fluid to cause the hydraulic piston unit at the top of the shock spring to compress the shock spring so the shock will be at its SOFTEST preload setting.
Re-filling the hydraulic preload adjuster will therefore only serve to make the shock STIFFER than it is now when it is used.

Are you sure that the rear shock compression damper setting (at the Left side bottom of the shock) is not jammed on 'High'?

Are you sure that the rear shock is not seized and so is unable to compress? You may need to remove the shock to test this if it cannot be seen to move when on the bike.

REFILLING THE REAR SHOCK PRELOAD ADJUSTER:

https://www.bmwlt.com/forums/k1200lt/84 ... shock.html
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!

roman.mih83
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Re: Getting to know the R850R

Postby roman.mih83 » Mon Sep 17, 2018 7:06 pm

Thank you for the explanation, i have moved the compression setting to S. It was almost all the way to H. It is better now.

Something else i have noticed:

1. Sometimes when i want to leave from the traffic lights, i can`t shift in the first gear. I press the shifter, the N bulb goes off, but it revs as in neutral. I have to press the clutch a few times, then to press harder the gear shifter. It doesn`t happen all the time. Probably when i ride mostly in town.

2. I get the impression that when i am in a traffic jam and i have to use the clutch a lot, the clutch handle gets stiffer. Anyhow, i don`t see a big difference from the cable operated clutch and this hydraulic one. It`s almost the same effort..

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Galactic Greyhound
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Re: Getting to know the R850R

Postby Galactic Greyhound » Mon Sep 17, 2018 7:29 pm

….Sometimes when i want to leave from the traffic lights, i can`t shift in the first gear. I press the shifter, the N bulb goes off, but it revs as in neutral. I have to press the clutch a few times, then to press harder the gear shifter. It doesn`t happen all the time. Probably when i ride mostly in town.....

On my R1100RT (cable clutch) I often find that when stopped at lights the gearbox will not go into 1st from Neutral when the gear lever is pressed down.

My solution is to slightly release the clutch lever while pressing lightly down on the gear lever and you will feel it go into gear.

I think that this is fairly common with the sequential gearboxes used on bikes.
Ced.

R1100RT 1996.
Sent by Boson Quantum Transmission from the Starship 'Galahad'.
http://www.researchgate.net/publication ... ing_bosons" - It works!


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