Pardon me if this should be posted elsewhere.

What is the knurled knob on the bottom of this shock.

TIA for any and all replies,

Troy

Rebound damping adjustment.

Judging by its position, I would say it is for draining or adding oil.

WoodyAUK75 wrote:Judging by its position, I would say it is for draining or adding oil.

No definitely an adjustable damping knob. Not possible to add oil to the bottom of a shock.

Bob's right.

has it been mounted upside down ? , my aftermarket shock is the other way around , remembering all that logic about unsprung weight etc , fix the heavier moving part to the frame , the lighter moving part to the wheel

John Re

Melbourne Australia

JR_K100RS wrote:has it been mounted upside down ?

Different brands of shocks have differing mounting positions. A Progressive 465 gets mounted piston upward. The K75 riders manual shows the stock shock mounted piston downward.

Unsprung weight! Your'e having a laugh. This is a BMW K100 with a wheel that weighs in at twice what my Ducati does, and a shaft drive that might as well be made of cast iron.
The popular RAM shock is almost identical to the one in the picture and is mounted that way up.

Thanks to all who have replied.

I believe Bob is correct on this one.

I will experiment with turning it a bit each way and see what effect it has.

First must find the source of the fluid leak from the fd.

Regards,

Troy

BobT wrote:Unsprung weight! Your'e having a laugh. This is a BMW K100 with a wheel that weighs in at twice what my Ducati does, and a shaft drive that might as well be made of cast iron.

Exactly!!!

Ouch ! , er yup I was having a laugh !

John Re

Melbourne Australia

tagaz wrote:I will experiment with turning it a bit each way and see what effect it has.
Troy

I think you will find that turning the knurled knob to the left (anti-clockwise) will deliver a slightly softer or slower feel to the ride and to the right a firmer, or quicker response. I usually make a large adjustment rather than small steps so I can more accurately gage what changes my adjustment has rendered. With small steps you might not feel much change at all.