1983 BMW R100RS/RT Rebuild Forks With Race Tech Cartridge Emulators

I’m going to rebuild the forks and I’m going to install the Race Tech Gold Gold Valve Cartridge Emulators.

Race Tech Cartridge Emulator Kit [Part#: FEGV S3301] with Separate Damper Rod Adapters [Part#: FPEV AD3301P]

Race Tech Cartridge Emulator Kit [Part#: FEGV S3301] with Separate Damper Rod Adapters [Part#: FPEV AD3301P]

This is the first time I have used them. I’ve heard that they make a significant improvement in handling and compliance compared to a damper rod design.

The stock springs can’t be used with the cartridge emulators so I install the correct Race Tech springs based on my specifications.

Race Tech Fork Spring Kit

Race Tech Fork Spring Kit

You can read all the details of how I do this work here.

And this is a video summarizing the work.

VIDEO: 1983 BMW R100RS Rebuild Forks with Race Tech Cartridge Emulators

I refreshed the wearable components using a fork rebuild kit I got from Tom Cutter at Rubber Chicken Racing Garage.

The damper rods have to be modified so there are six compression damping holes in the bottom of the rod. Race Tech supplies a piece of 3/4 inch PVC to make fork spring preload spacers to achieve the correct preload based on my specifications.

Damper Rod Showing Parts Order-(L) Bottom; (R) Top

Damper Rod Showing Parts Order-(L) Bottom; (R) Top

Two Of The Four Additional Holes Drilled at 10 mm On Center

Two Of The Four Additional Holes Drilled at 10 mm On Center and 90 Degrees Rotation From Each Other

I repainted the fork lower sliders as they had a lot of stone chips.

Fork Lower Slider Dings

Fork Lower Slider Dings

Repainted Lower Fork Sliders

Repainted Lower Fork Sliders

 

2 thoughts on “1983 BMW R100RS/RT Rebuild Forks With Race Tech Cartridge Emulators

  1. Thanks for another interesting post with video!

    I think there are quite a few us that would be interested in your thoughts of the upgrade when you get the bike back on the road.

    Best regards

    Saunders

    • Hi Saunders,

      I too am looking forward to what it rides like compared to the 1977 RS. I would not be surprised that I spend some time fine tuning the compression damping and spring preload.

      Best.
      Brook.

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