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PeteR69S
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Spain
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Hi all,

I am looking for buying an R100RS.

I have seen a 1978 Motorsport edition and another one from 1982 pearl white.

My doubt is if it's better to decide for the Motorsport, because was a very short edition, or for the '82 about the improvements of this later series (electronic ignition, brembo,...)?

Thanks!

mark_weiss
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Arizona
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Motorsport is a very nice

Motorsport is a very nice look with its special paint work. As you note, the later bike has a myriad of mechanical upgrades.
Are you seeking something more for show or more for riding? That decision could provide your answer.

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PeteR69S
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Thanks Mark for your really

Thanks Mark for your really fast answer!

It will be not a daily use.

For the looking The Motorsport is very nice, better for me than the pearl white. But electronic ignition, nikasil cylinders, brembo brakes,....

Not easy for me to decide!

Will ride both and then I see...

Thanks again!

PeteR69S
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By the way, how can I know

By the way, how can I know that the Motorsport one was really an original Motorsport?

I read in an Ian Fallon's book that the Motorsport's were between different vin numbers, but if only 200 were built between these number can be also standard ones?

By the paintwork looks a Motorsport but if the main difference was the paintwork then was easy to convert standard ones in Motorsport 's.

How can I be sure that it's a really Motorsport?

Thanks.

Dan McCarthy
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Pete, The Motorsport was

Pete,

The Motorsport was perhaps the most famous of the several BMW airhead "Limited Editions". I had an "Airline" for a couple of years, and I have seen a Black & Gold "JPS Special", and I think there have been a few other "specials".

Unfortunately these limited editions are mostly just paint jobs (the Airline had polished fork legs!), and as such are hardly that special. I've seen Motorsport bikes advertised for big money, but they really don't merit high value, unless you place a premium on white panniers and a blue seat.

Don't get me wrong - I love my old airheads, but post '80 airheads are by far the nicest of the twin shock R100RS bikes in terms of real world performance and "modern" braking, and if I was in the market for one that's where I'd put my money.

khittner
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I'm not a "model

I'm not a "model year/change-over expert", but if "authenticity" is an issue, check for a manufacturing date on the candidate "'82". I don't believe there were any OE pearl white bikes in 1982 (at least, not in the U.S.); the "60th Anniversary" paint scheme (pearl white with red/silver pin stripes) was an offering for the 1983 model year. And pearl white with "Motorsport" pin-striping was the paint scheme for the 1984 "Last Edition" bikes in the U.S. If the '82 bike has had its valve seats re-done, it'll be the better daily rider of those two. Post pictures of whichever one you go for!

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mark_weiss
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Arizona
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Here's what my '82 looks

Here's what my '82 looks like. The best of both worlds. It is plain white, not pearl, but the Motorsport theme would still look good with a pearl back drop.

  • 82rs.jpeg
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Dan McCarthy
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Mono?

mark_weiss wrote:

Here's what my '82 looks like. The best of both worlds. It is plain white, not pearl, but the Motorsport theme would still look good with a pearl back drop.

Mark - is that a mono front end? How difficult/easy is it to fit one to a twinshock airhead? I ask because over here in the UK used mono bits are considerably cheaper than twinshock stuff.

mark_weiss
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Arizona
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It's a bolt on swap. The

It's a bolt on swap. The steering stems are the same, so it is an easy change, my front end is actually from a K75S. The master cylinder should match the calipers so a swap may be needed there. RS handlebars do not clear the upper triple clamp, so I have used /5 bar mounts to raise the handlebars to the correct height and all is well. K75S bars are also supposed to work, but I did not have a set. The RS's fork boots did not fit the larger forks. Possibly boots from a monoshock RS would work, but I have never checked.

The end result is better suspension, improved steering, and better range of available tires. If there is a minus, it is that my wheels don't match.

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PeteR69S
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Spain
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Finally I got

Hello everyone,

Well, as I started in this thread, after more than half a year looking for an authentic R100RS Motorsport, I finally found it.

I had my doubts, because it is a model of 1979 and with oil cooler. In fact, always I heard that Motorsports were from 1978, so I was considering not to go to see it but my old mechanic, who worked at the only BMW dealership in my area, told me that he unpacked the bike from the box and it had from new the Motorsport colors.

The VIN number was also not included among the numbers that Ian Falloon specifies in his book as possible EU Motorsport.

So neither the year of production nor the VIN number coincided as a Motorsport as Falloon said, and despite the "statement" of my mechanic, because of my doubts I consulted to BMW Classic to see if this VIN number was from factory really a Motorsport edition R100RS .

And indeed it was an authentic Motorsport Edition !!! So I closed the deal quickly ...

So in case of doubt, ask BMW Classic. They were really helpful.

Best regards to all.

  • R100RS Motorsport Edition
Twocams
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Nice bike. I saw a 1979

Nice bike. I saw a 1979 R100RT not RS for sale. Did they make a RT. If not someone went threw a lot of work to make it look like a Motorsport. But he isnt selling as a Motorsport either.

twocams

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92 R100RT

PeteR69S
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Hello Twocams

Twocams wrote:

Nice bike. I saw a 1979 R100RT not RS for sale. Did they make a RT. If not someone went threw a lot of work to make it look like a Motorsport. But he isnt selling as a Motorsport either.

twocams

Hello Twocams,

Also the R100S had a Motorsport Edition, but I think not about the R100RT. But must be a nice one painted in that colors...

Regards.

Wayne J in MA
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VBMWMO #8398
Westwood
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R100S Motorsport

Yes, in the US there was a 1978 R100S Motorsport. I have one as my main rider.

They were built later in the year than the RS group of approx. 200. Mine was produced in 6/78 and is an ECE model. About 25 of these were delivered to B&S late in the 1978 model year. There are a few differences in these vs the RS ones besides the fairing.

I have read that there were also a few S models mixed in with the earlier RS quantity.

Bear in mind that these are virtually the same as any other S or RS except for the paint. I treat my S Motorsport just as if it was any other S. Ride it and enjoy it, it is not an investment except in your pleasure.

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CharlieVictor
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Yes.... and no. The so called

Yes.... and no.

The so called "S" Motorsport seems to have been an RS modified by Butler & Smith, as full faired bikes were not very good sellers at the time.
B&S dismantled the RS fairing to install a simple S cockpit. The name that came up was SRS, but I'm not sure it's what they were designated or if it came later by the fans of that model.

It's just like the "Belgian Gendarmerie" red RS. There never was such a special model (for starters, BMW police package models were RT, not RS).

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