Front forks diving when braking slowly

**llanelli** · #1 23 Jun 2004

When I am braking when travelling slowly, I get a slight diving sensation then release , then diving again,(only slightly). Someone said my springs are gone. Any ideas. I got the oil replaced!

Thanks

**Grant Johnson** · #2 25 Jun 2004

Which model/year/mileage?

But note that all BMW's are soft in the front end, mostly due to the long travel forks, and some dive is the nature of the beast.

Which oil/weight?

Progressive Suspension makes excellent fork springs for most Beemers. Recommended.

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Grant Johnson

Seek, and ye shall find.
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One world, Two wheels.
www.HorizonsUnlimited.com

**bryan** · #3 30 Jun 2004

can recommend WP(white power) aswell

**Grant Johnson** · #4 30 Jun 2004

Rereading the question, it actually sounds like the brake disk is warped. That could account for an on-off-on sensation.

**llanelli** · #5 2 Jul 2004

It is an F650GS Dakar 2003.

If it was the disc, wouldn't I feel a vibration when braking at every speed?

Many thanks
Andrew

**Grant Johnson** · #6 2 Jul 2004

Not necessarily - if it's only slightly out, you might not. Higher speed makes the pulses so close together they blend.

COULD also be a badly glazed spot, or a spot that's got oil on it at some time, which would give the same feeling.

Get it checked by a shop, they should be able to tell you easily.

------------------
Grant Johnson

Seek, and ye shall find.
------------------------

One world, Two wheels.
www.HorizonsUnlimited.com

**ekaphoto** · #7 2 Jul 2004

Another possability is that your springs are too soft for the weight on the bike. Most bikes are set up for people 180-190 max. An average person plus extra gear can go over that easy. The springs may also be worn out if they are very old. Just a couple of things to think about if the brake rotor is not the problem.

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John

**Grant Johnson** · #8 8 Jul 2004

Here's an interesting article on possible causes, problems. It's for cars, so not perfectly applicable, but good nevertheless. I think the basic info is excellent. Very interesting reading about the break-in procedure for disks and pads.