R80/100GS front fork mounted on R80G/S (TüV or BMW approval)

[G-slash-S_Rider]

Hi 2V riders

I have a BMW R80 G/S and would like to mount the front fork from a BMW R80/100 GS but I will need to have it certified for legal use on the road. The front wheel will still be from the G/S with a special front axle and brake parts from HE Bremstechnik.

• Does anybody know if any German riders have done the same conversion and had it TüV approved?
• Or does anbody know if BMW has made an official approval of using the R80/100 GS forks on a R80 G/S?

Hope that some one can help me with some answers or point me in a direction where I can find some more information on how to get the conversion approved for road use in Europe!

 

[Hermann (aus E)]

Hi Slash,
I think there are some bikes with that combination, but not in this forum. Ask the real specialists in the forum 2V-Frorum >> click <<

Greetings Hermann

 

[DiDi 60]

Hi,

i have mounted a front fork from the R 100 GS in my G/S and use the original front wheel from the G/S. Using the fork is very easy, like plug & play. To use the front wheel from the G/S in this fork is very difficult, you need a selfmade axle and have to change the brake parts. I use a brake disk from the R 100 GS with a new circle of holes and have to modify the brake caliper.

I am very certain that there are no certificates from BMW for this conversion, sorry.

 

[G-slash-S_Rider]

Vielen Dank fur die antworte Hermann!
I will try to investigate further in the other 2V forum. There is no question that the GS forks and brakes offer far better riding safety than the under dimensioned G/S parts. I would just like to apply to all rules and regulations.

@DiDi 60: Your conversion looks superb! I hope you could help me with below questions:
- Did you use the original G/S hub to bolt your new disc to?
- Where did you order your disc and do you have any part number created for it?
- Did you get the conversion TÜV approved/road approved?
Thanks in advance!

I found this website where the conversion is described: Daniel Dickes R80G/S
The guy is writing the text below on the site so I will try to contact him:
"Die TÜV-Eintragung war kein Problem. Bei Bedarf kann ich eine Briefkopie versenden und mit Unterlagen für die Eintragung behilflich sein."

 

[DiDi 60]

Yes i use the original hub in the G/S - front wheel.

- fork from R 100 GS
- complete front wheel original from G/S
- the braking disk BW02FI from braking company https://www.braking-shop.eu/brakedisc/bw02fi
- the braking caliper from Brembo with 32/34 mm pistons

My conversion works very well and i never need a approval for my local TÜV here.

If you want to do exact this conversion think twice, it is not easy to do and was very difficult for me.

- you have to made a new axle
- you need some new selfmade distance washers for the left an the right side
- to mount this braking disk you need the holder of an original brake disk from BMW R 100 GS or other BMW
- you have to drill some new holes in this holder (GS: 4 x 10 mm ....., G/S: 5 x 8 mm .....)
- you have to mill-cut 4 mm less at the two holder at the braking caliber

I was very happy to have some good friends in mechanical engineering to do this conversion!

 

[G-slash-S_Rider]

Thanks a lot for the details :-) I do have some contact to local machine shops but I'm not expecting it to be cheap. Still I'm willing to spend the money and time to improve my G/S!