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- Path: sparky!uunet!bcstec!bcsaic!rhorwell
- From: rhorwell@bcsaic.boeing.com (Roland Faragher-Horwell)
- Newsgroups: rec.motorcycles
- Subject: Re: Hydro-Phneum susp for bmw
- Message-ID: <91521@bcsaic.boeing.com>
- Date: 28 Jan 93 05:04:20 GMT
- References: <2052@eru.mt.luth.se>
- Organization: Boeing Computer Services, Seattle
- Lines: 53
-
- In article <2052@eru.mt.luth.se>, set@mt.luth.se (Sven-Erik Tiberg) writes:
- > Iv'e got a BMW R100RS -78 with some modifications as 4-V krausser cyl.heads,
- > LT-seatbank, stiffen frame and swing, air-supported front suspention a.s.o.
- > Next subject are to mounth a single Citroeng GS suspention unit on the rear
- > swing to achive better comfort in solo for fun as for hollidaytrip.
- > Since I'm prof. work with more or less active suspentions it would be fun
- > to get this on my bike to.
- > Problems ( challanges ) 1 how to substitute the hydraulic pump.
- > 2 Optimazation of the swing to get strait vertical movement.
- > 3 To use the stock accumulator or flexible tube.
- > 4 To have an manual or elctrical switch between soft and sport ride.
- > ( using one or two tubes/accumulators. )
- >
- > Has anyone tried this madnees please mail me.
- >
- > Sven-Erik Tiberg
- > Lulea univ. of Techn.
- > Phone Sweden 920-91218 Fax. S-(0)920-91047
- > Mail set@mt.luth.se
-
- 1 - if you are concerned about the size of the hp pump from the GS, use
- a single piston model from an older Citroen ID19 with manual steering.
- These were driven off a lobe on the cam, but they are much smaller and
- compatible with the LHM (Green Fluid).
-
- 2 - I haven't dealt with this one!
-
- 3 - Use the original accumulator/sphere (especially if you use a smaller
- pump!) You will want the reserve pressure from the sphere (also use
- the\
- original regulator. You can use a flexible line from the regulator to
- the suspension cylinder since you are not supporting as much weight as
- a car.
-
- 4 - One approach is to use the height corrector off the GS and put it in
- a "higher" position for more stiffness. If you want immediate reaction
- (like on an XM with Hydractive suspension) use 2 accumulao
- tors and run them in series when you want "sport mode" and only use one
- when you want "comfort" mode
-
- Finally, there is a guy in Paris with a BX Diesel powered bike - I don't
- know if it has the hydraulics, but it sounds interesting!
-
- email me if you want more info
-
- Roland Faragher-Horwell
- President, Northwest Citroen Owners Club
- rhorwell@atc.boeing.com
-
- (I am also a bike nut - recently sold my Norton and BSA - sob!)
- .
- :wq
-
-