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Author Topic: 1978 R100RS front end.  (Read 928 times)

Offline Tony Smith

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1978 R100RS front end.
« on: August 08, 2016, 07:04:25 PM »

I am getting stuck into the rebuild/restoration of my RS and am considering committing an abomination.

Whilst the front end of the RS doesn't offend, I have *never* been a fan of ATE swinging calipers being all too aware that the first time BMW fitted two of the blasted things to the R75 it was in response to trenchant owner criticism that the single ATE was of such underwhelming performance that the drum brake it replaced was considered superior.

My forks need re-chroming (at the very least) and may need to be replaced.

BUT, I've hit on an alternative - I have been offered the complete front-end from a K100RS - triple-trees, forks, wheel, discs, mudguard and brake calipers for a very good price.

I have asked this question in the airheads facebook page so I have confirmation that this is a simple "bolt-on" conversion. I've seen some discussion pro and con regarding fork rake and axle position - at present I am regarding this as mostly armchair pontification from people who have never done the conversion, I am abotu to push the "go" button on the project.

My query here is does anyone have direct knowledge of the conversion and do you wish to say anything, positive or negative about the proposal?
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |

Offline Tony Smith

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Re: 1978 R100RS front end.
« Reply #1 on: August 08, 2016, 07:05:44 PM »
I have already worked out that unless I want to go to the fun of making my own disc carriers I will have to use the K100 front wheel. in the short term I don't see that being a problem.
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |

Offline Bob_Roller

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Re: 1978 R100RS front end.
« Reply #2 on: August 08, 2016, 07:15:43 PM »
One of our members here, sempergumby, put a K75 front end on his '80 R65 .

Have not heard anything negative from him on this alteration .
« Last Edit: August 08, 2016, 07:20:08 PM by Bob_Roller »
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline Tony Smith

  • Mt. Olympus Resident
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  • Posts: 2331
  • Graduate, Wallace and Gromit School of Engineering
Re: 1978 R100RS front end.
« Reply #3 on: August 08, 2016, 07:23:03 PM »
Quote
One of our members here, sempergumby, put a K75 front end on his '80 R65 .

Have not heard anything negative from him on this alteration .

This is looking better and better.

Oh well, I don't have kids to be concerned that I am spending their inheritance I suppose.....
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |