Late model R100RS vs R100R

Discussion in 'Airheads' started by red tag, Jun 18, 2013.

  1. red tag

    red tag lost at sea

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    I've been considering a post '90 R100RS but noticing that the R100R has the paralever and the RS still used the older monolever rear suspension, I was looking for some input as to fitting out the 100R with the RS fairing and tank or is there an advantage to the older style suspension? I currently have an
    R100 GSPD, like the paralever, but figure BMW fit the monolever to the RS for a reason. Thanks
    #1
  2. bajaburro

    bajaburro Ancient Adventurer

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    intresting question.you'll be sure to get an answer here.
    #2
  3. supershaft

    supershaft because I can

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    Monolevers are my favorite airheads.

    R's? I am not personally a Paralever fan. They make the wheelbase too long. They weigh more. The drive shaft U joints are more likely to go bad. The driveshaft rubber cush-drive is way more likely to fail over the spring/cam setup on a Mono. The final drive input shaft seal is very likely to leak leading to drive shaft rubber issues. The tranny output seal is too to a lesser degree. The paralever bearings wear out on a very regular basis. But they do have less drive shaft effect. I grew up riding beemers so I am use to that.

    And then there are the R's forks. If the forks don't already need new tubes for flaking and pitting chrome, they soon will. I don't understand the need for a rubber mounted fork brace? I love that they have teflon bushings for less stiction but they do need to be replaced on a regular basis. I would say about every 40K miles.

    I have always liked the looks of cross spoked wheels but I did not realize until recently that they are even heavier than the Mono's wheels and the mono's wheels are too heavy IMO. That and the cross spoke wheels are rarely even close to straight right our of the crate!

    Plus I like the looks of the Mono's better but that is just me.
    #3
  4. red tag

    red tag lost at sea

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    Thanks, any difference in handling between the two?
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  5. Grafspee

    Grafspee one bike is never enough

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    Another example of why newer isn't always better! The one thing I have noticed over the years is newer more often than not means lower quality components or under engineered specs. The reason I purchased my first BMW twin in 1987 was because it was a simple intellegent design that was easy to work on, saving me money in labor costs and it was over built so I figured it would last years! I rode that first BMW a 1982 R100 for over 16 years. Yes newer bikes handle better are faster and I have owned some nice newer bikes, but I have a couple of early 80's R - bikes and they are such a joy to tinker with. Parts are expensive but the bikes are easy to restore.
    #5
  6. Grafspee

    Grafspee one bike is never enough

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    Most agree the R100r is probably one of the best handling airheads ever built. And honestly, I would probably have one if available for the right price despite some of the negatives mentioned above. I used to love the idea of the spoked tubeless rims but now the thought of having to need one rebuilt just scares me!
    #6
  7. boxerkuh

    boxerkuh Been here awhile

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    I have one of each and like the one that I am on at the time better. They both work fine. I love them both, but there are some minor differences.

    You can put a RS fairing on any of them. I have seen pictures on this site with a RS fairing on a Paralever R....
    #7
  8. Left Testicle

    Left Testicle Been here awhile

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    I have a GS paralever. 122000kms and has not caused me any grief. I ride it reasonably hard,dont use the brakes when yahooing but the gearbox gets a good work out. It will redline in every gear.
    #8
  9. supershaft

    supershaft because I can

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    The R's feel plusher to me mostly because the Paralever is letting the suspension work more under hard acceleration. That and that longer wheelbase IS noticeable IMO. I need all the cornering clearance I can get and shorter wheelbase bikes have more, all other things remaining equal, for not having to lean over as far in the same turn. R's are more stable. Some might like that. I don't but I like twin shock R65's and short wheelbase /5's for the same reasons. R100R forks should work a bit better for their teflon bushings and real top tree but the top tree can be replaced on a Mono. Plus a Mono has a rigidly mounted fork brace. It mostly bowls down to that Paralever versus a Monolever. They just aren't worth the trouble IMO. I prefer Monolevers for their handling and reliability. A lot of people do say that the R's and the like are the best handling airheads but I am not one of them. I think LS's and Monolevers are.
    #9
  10. 97oilhead

    97oilhead Been here awhile

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    I really like my R100R. I would prefer that it was a monolever but other aspects make the bike and enjoyable ride. One thing nobody mentioned are the front brakes. I had a '94 R100GSPD, even with the caliper upgrade I think it was one of the worst braking bikes I ever had. The R100R with the duel 4 puck system works fantastic.
    #10
  11. boxerboy81

    boxerboy81 Stay Horizontal

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    [​IMG]
    #11
  12. red tag

    red tag lost at sea

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    97, why would you prefer a monolever?

    Thanks boxerboy, that's what I was thinking about! I had an RS with paralever suspension and wire wheels in mind as a starting point. Do you know if an RS tank and seat would fit right on?
    #12
  13. 97oilhead

    97oilhead Been here awhile

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    I like the final drive ratios better on the monolevers. Monolever easier to service and sooner or later you are going to have a drive shaft failure on the paralever.
    #13
  14. AntonLargiader

    AntonLargiader Long timer

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    Love the Paralever. I have a GS and an R. IMO the rear suspension is just a huge leap past the monolever. BMW wasn't the only one to realize the benefit; Guzzi used it, too.
    #14
  15. supershaft

    supershaft because I can

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    I kinda compare straight shaft versus Paralever to driving any number of car setups to a swing axle. If you didn't grow up driving swing axles, they're a handful when you are pushing it really hard. Same deal with most of our bikes. It's just that I grew up riding them. Swing axles? For me? No thanks! I have a friend that can drive the shit out of them but not me.

    Four pot Brembo's? They have to work better than the two pots but I can out brake most all my friends with them. Plus the Mono bikes have bigger, beefier Brembo's than the '81-'84 twins. Less flex and bigger pads. I think they work better.
    #15
  16. erappaport

    erappaport pray for rain

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    I had a couple of Paralever GS airheads back in the 90's.. both sold prior to 40,000 miles, so I never got the chance to do the long-term driveshaft mileage test. At the time, I heard from several wrenches at local BMW shops that the R was less prone than the GS to failure, given the shorter suspension and shallower driveline angles. Great bikes, either way..
    #16
  17. Prutser

    Prutser Long timer

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    IMHO the mono is the better handling bike. I totally agree with SS when it come to the mono's.
    The R100R with its paralever is smoother but when accelerating in corners it pulls the rear down a bit which makes you loose ground clearance :baldy

    The mono's lift the rear when accelerating which makes the bike steer into a corner and gives more ground clearance.
    The surprises start when you close the throttle in a corner and the valve covers hit the pavement hard :D That's when the adrenalin comes :thumb

    The forks of the R100R are much smoother than (most) mono forks.
    But like SS told they do have bad chrome. And a lot less wheel travel !!!!!!
    The damping system on both forks is far from good but could work good enough for most riders.

    The front of the R100R is to high and makes the bikes drop into tight corners and also makes the bike run to the outside of long fast corners. Putting the fork tubes trough the triples helps a lot to improve the handling. But you cant put them trough far enough because the handle bars are restricting that.

    On my girlfriends R100R I used handle bar raisers to make room for putting the tubes 40 mm trough the triples and used a much longer shock on the back than stock to improve the handling even more.

    In one of my mono's I mounted a R100R fork. Those brakes are better than the mono's brembo's. But there is a big difference in the rotors. The stock mono rotors have a more aggressive bite than the R100R semi floating rotors.
    The stock mono brakes are more than good enough IMO. Its the tire that can't handle better brakes.

    When you would compare the torque curves of the two bikes its great to see the difference.
    The R100R has a totally different curve compared to the R100 mono.
    The lines of the mono are much smoother. Which makes the bike smooth trough the whole rev range.
    If you are riding together with guys on the R100R and on the mono's look at how often the brake light comes on on the R100R compared to the mono. The engine braking is a lot better on the mono !!!!

    I changed the the carbs from 40 to 32 on my girlfriend R100R which made the bike faster from the start and helped the engine braking a bit but not enough. The shape and size of those heads and valve sizes are the same of those bikes except the difference in carb month. The final drive ratio might have been the next thing on the "to do list" but she sold the bike and bought a mono. And now she is chasing big sport bikes in corners which is so much easier on the mono:wings

    They are both great bikes and its all a personal thing.(But I would always go for the mono)
    #17
  18. Zodiac

    Zodiac loosely portrayed

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    I rode a few Mystics, which I assume feel like the (modern) R100R, fun bike but it felt heavier and less nimble than my Mono.

    There's some good comments here, but to me the Para airheads look like a stop gap between the future oilheads and the old airheads, kind of wonky design. For me anyway, that means something.

    Mono love

    [​IMG]
    #18
  19. R100LT

    R100LT Chasing 11

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    Upgrade the Shockie ( I went for YSS ) ... and then you really can appreciate the handling of a mono.

    I have two mono's .. so I guess I have twice the love.

    Oh Zodiac .. I don't think you have posted much since you up grade to the 336 Cam .. like to know how all that went
    #19
  20. Zodiac

    Zodiac loosely portrayed

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    I went for a Progressive, completely planted and no hop on acceleration when compared to the stocker.

    ps for R100LT:

    http://www.advrider.com/forums/showpost.php?p=21385830&postcount=52
    #20