K1100RS

"With the bike weighing a fraction of its former self, Giorgio invested time into improving performance. The K1100 forks have been suitably rebuilt and the mono-shock swapped for an updated version. In place of the bulky airbox is a breather system that uses lightweight corrugated pipework. A large K&N cone filter positioned above the swingarm feeds each carb via the 1-into-4 system..."

"BMW Bricks have never been my thing, but..."
-Author

What credentials must one have to write this stuff?!

Two Wheels Better wrote:What credentials must one have to write this stuff?!

A valid email address is the main one.

The writer certainly neglected to indicate the clever adaptation of a EUR size 54 4E clown shoe for the seat; however, the term portly Beemers used to describe the K1100LT and RS is charming.

Shahin

"Dragged in 2019 kicking and screaming..." because of a coupla USB connectors...

I took a look at the Shahin build and then checked out the bike he referenced as an influence.  Read that write up until I got to the link for the build that influenced that guy.

http://www.bikeexif.com/bmw-k100-cafe-racer

I like this one the most, mostly because of the way the rear end gets treated.  More balance front to back I think. (entirely subjective)

I've seen that one and agree, a clean job. It has a mudguard up front!

Woodie wrote:I took a look at the Shahin build and then checked out the bike he referenced as an influence.  Read that write up until I got to the link for the build that influenced that guy.

http://www.bikeexif.com/bmw-k100-cafe-racer

I like this one the most, mostly because of the way the rear end gets treated.  More balance front to back I think. (entirely subjective)

The fuel injectors are now the 4-hole type, for better fuel atomization and smoother throttle response.

I don't buy this. I've tried four hole injectors in both a K75 and a K1100 and they work the same as stock injectors.  Same throttle response, same mileage.  This is a big thing over on the Jeep forums and there's even a fancy YouTube.  The one thing I've never seen is an actual dyno chart showing any difference.  If the four holes made a tangible difference that could be documented on a dyno you know damned well that whoever is selling them would display it proudly.

I'm not a doctor, although I play one on TV. Sure, a sprinkler beats a gurgling hose in disbursement of water onto your lawn, but in the end you get wet grass.

A few Brickers have reported higher fuel consumption with the four hole injectors. And as .75 pointed out, due to their smaller size four hole would be more prone to blockages. And as per Duck I'm still waiting for the dyno comparison, which if they are so superior why wouldn't you show it by doing a dyno comparison. Most of the improvement comes from replacing dirty one hole injectors with clean four hole injectors.
Regards Martin.

 It's 5:20 am for me Chris.  Thanks for a great start to my day!  

Don't mock purple anodized bolts. They do work. And I've seen the dyno charts that prove it.

And who ever heard of purple anodised bolts that need shimming?!

What's in a name?

Click on the link below for more ugly.

Flying Fighter by Ugly Motors

A K11 from Lithunania.

Vilnius Moto House

Click the link just above

It would be interesting to see more detail as to how they 'grafted in' the R6 shock and mount.  I wonder what kind of ride you would get with this set up.  A lot of nice details though.

It'd have to have been alu-welded to the Paralever swingarm. If the spring rate and damping characteristics were taken into account, or compared to other bikes likes Kwacka's ER650, & etc., which use a similar lay-down style, then it could be quite a nice ride. Though, often these bikes are built for viewing - a reduction in practicality and usefulness from my perspective - rather than their over-the-road prowess. Certainly those Elvis' Harley shit tyres from the fifties aren't gunna do a sporting rider any favours.

If you look at the right hand side view enlarged you can almost see where the back end of the swingarm appears faded, perhaps from the heat required to weld that bit on...



It's not unlike those 'builders' from South America, whose name eludes me just now, who seem to have mastered the laydown shock on K's with Monolevers.

TWB, of course the tires and handling preclude riding fast.  But, think about it, if you have one of these bikes you don't really want to go fast.  Rather, you want to give the hordes of admiring females as much time as possible to ogle you and your incredibly cool and yuneek machine.

I think it would look better if they painted the tank blue too.  JMHO.

I thought that these bikes were supposed to be painted flat black to contrast better with colorful graffiti and windblown fast food wrappers.

The air box has been decommissioned but he kept it in there anyway - all the effort and attention to detail and he passes on this one?  He has done a great job of making all the lines work though.  I like it.

Woodie wrote:He has done a great job of making all the lines work though.  I like it.

I too like the way they've angled the odd lines to make a clean, stylistic sweep from front to back on this one. Most 'builders' don't get it right, and if modifying one of these beasts it's quite difficult to do that, so most don't take the time or spend the money. My own BB has an awkward styling 'hinge' in the middle that I simply live with, but the bike feels natural to hand and feet, goes well over the road and can take me across the local mountain passes for a long weekend of play in the twisty bits. I do not wish to chop and reconfigure the back half of the frame, or to re-angle the tank position. 

I quite like some of the Kustom Ks arriving on the scene lately, but many of them don't suit me, especially those with clip-ons and then thick, chunky knobs for tyres, or lack of a front (or rear) mudguard. In the end I like a fair few of the modded K bikes I've seen lately, even-if-only-built-for-looks-bikes than can be ridden in the 'real world' without roadspray or frequent trips to the chiropractor. For me only, if I'm gunna build a scrambler, kewl, or an actual cafe racer, fine, but the odd-to-me melding of eras and genres doesn't thrill, aesthetically or practically.

Now, a well-executed restoration of what are nearing 40 year old motos by now is a sight to behold. Long live the Mighty K.

An-Bu 16V K100RS
It's got a front fender, and he managed to harmonise the 'lines' of the motorbike better than most 'builders'.

Clever use of the white paint to draw your eye away from the gap under the seat hump. yes, it works.

That exhaust looks so messed up underneath a very linear motorcycle.  I do love hand made headers but this looks like a mess underneath the brick.

Ref. #123. I think the Japanese have their own style, which I like. The bike is very much like the work of Ritmo Sereno, who have a thing about aircooled boxers. I don't think he/they've done a K yet though.



BTW, it's his stuff that I'm trying to copy/rip off with the K75k. We'll see if that works!

Woodie wrote:That exhaust looks so messed up underneath a very linear motorcycle.  I do love hand made headers but this looks like a mess underneath the brick.

Ramen. One of my favourite Asian foods when I was cheap and poor. Still am.
If it was an Italian builder I'd cry out for more pasta. Mum's Italian-Aussie.

'xactly TWB.  My initial thought was a tub of bait worms but pusketty or Ramen is a better descriptor.  When I was young and much, MUCH leaner, I think Ramen noodles and peanut sauce were 90% of my food intake.  I was remarkably fit back then too (remarkable compared to now - not claiming to have been an Olympic class athlete).

Woodie wrote:'xactly TWB.  My initial thought was a tub of bait worms but pusketty or Ramen is a better descriptor.  When I was young and much, MUCH leaner, I think Ramen noodles and peanut sauce were 90% of my food intake.  I was remarkably fit back then too (remarkable compared to now - not claiming to have been an Olympic class athlete).

Do you remember that forum member from either Belgium or the Netherlands who made a tres kewl Kustom K with a mangle of header pipes? I can't recall his user name, but that was a really sweet design he fabbed up and I've always thought it looked cool and probably did the proper breathing biz being equal length and all. I imagine this guy's set up does a similar job, and I quite like it. There's no German noodle dish I can think of...spaetzle doesn't quite do it for me.

Dixer K100-16V

Whack a coupla slim but useful mudguards onto it and you're golden. Didn't they get the "hinge in the middle" look fixed up?!

Yes but... you might just make it from one coffee bar to the next before your ass gives up. After the lockdown is over, of course!

A "K" of a different colour

Not a K as we know it, but kewl any way you slice it. Oh!

I met the guy when he'd just built his first SS100 V-twin and the nine-cylinder KH-2250. I was due to test-ride the Kwack for Classic Mechanics magazine (as it was back then) but when I called him up to arrange it, the middle-rear cylinder had seized. One of the few things I regret did not happen.

[Edit] May 1997, it was.

I've been watching a bunch of his videos on YouTube during this time of great social withdrawal and am inspired to cut various things in half with a hacksaw.  The dude's a frikkin' genius in the most practical sense.

Motocrew MPower K100

A fair bit of time and trouble taken fixing the 'lines' of the tank & seat, as well as that annoying little bit at the front bottom edge of the tank. Don't Technischer Uberwachungsverein (TUV) require a front mudguard in Germany?

I do think that the five spokes that BeeEm fitted to the R1100s are just about the best looking bike wheels ever.
Plus, they fit the K too!

Shame that a few years ago I gave 2 away to Motorworks, wonder how much they'll sell them back to me for, for the next proj?

It's true the rear five spoke is a bolt on and go type for K bikes, both Monolever & Paralever, but the front can be a bit more of a problem. You'll need a longer LH side axle spacer if using K1200RS/GT & R1100S/R1150R-Rockster front wheels (speed sensor in final drive like K), and a larger ID seal (60x30x7) and longer spacer if using standard R1150R or R1150RS/R1150RT front wheels due to the removal of the speedo drive gear, as well as a spacer to sit inside of the LH fork leg since the standard K1100 axle is too narrow there, ala Big Block. I've heard of people finding the 'correct size' bearings but have never seen or read of the finished product, at least on this forum, yet. 

Long ago a mate of mine fit K1200RS wheels, in blazing yellow, to his ketchup/catsup/tomato sauce & mustard K1 and had the front wheel hubs machined to accept the bearings (& new size seals) his job required. He whacked in a K11 engine, too.

Also, I dunno how all this goes up the front when trying to use standard Sachs/Showa K75/K100 forks. My experience is only with Marzocchi forks from a K1100RS with four piston callipers and either 305 to 320mm discs.

Fans of customized K-bikes may find this interesting:
https://www.youtube.com/watch?v=VOTfm1e4xYA

jbt wrote:

and a set of velocity stacks have been fitted to the intakes to help smooth airflow as it enters the engine", etc.

Pure bullshit.
Velocity stacks are genuine into the airbox, at the entrance of each admission hose.
It's nonsense to put one just before the debimeter flap...

The better description would be "to slightly increase airflow" As fluid dynamics will tell you, having a smooth entrance to the airflow meter instead of just a hole will actually increase the airflow allowed through. This concept applies to other features of engineering such as culverts, adding a wide angled mouth that guides the water into the pipe will allow a higher flow rate through the same diameter hole. The exact same concept applies to airflow. Notice the intake on the airflow meter in it's stock configuration is also smooth and sloped inward? This reduced turbulence and subsequently improves airflow. So I wouldent go saying it's completely bull, however I could venture a guess that wasent in the mind of the builder when they put it there.

Wiz

" ... a set of velocity stacks have been fitted to the intakes to help smooth the air flow..."

Reading that made me imagine velocity stacks similar to a k100 inside the corrugated ones of the k1100 to help smooth the air flow (and might they be corrugated because they wanted some turbulence?)

A K Bike makes it onto Bike Exif's Top 10 Customs of the Year list.

Matteucci Garage K75

Hmmm, alright, not bad, but Top 10? Another brilliant use of the no-front-mudguard look that's all the rage, especially on some cafe racers with knobbie tyres & clip-ons. Those crazy genre-bending builders, oh boy.

Yeah well. IMNSHO that rear suspension is looking for somewhere to kill you. I think it was made in Milwaukee.

Two Wheels Better wrote:A K Bike makes it onto Bike Exif's Top 10 Customs of the Year list.

Matteucci Garage K75

Yeah, but number 1? The future that awaits us. I'm depressed...

impressive, beautiful preparations

Two '94 K1100RS

Click the link above for the bikeexif article.





Built on the cheap over a winter (2014/15) and no other running or viable K Bike taken apart on purpose to put this one together. Just sayin'...

You'll have plenty of time to build more now, won't you?

Dai wrote:You'll have plenty of time to build more now, won't you?

The closest I'll come to another 'build' is to put the '96 K1100RS in my garage back together as close to original as she was. The PO troubled her with LT 'bars, a Corbin seat & distinct lack of regular maintenance. Everything that could've been ignored, was, a testament to their relative sturdiness. I know few other large motocats that can take abuse yet still purr on, perhaps hacking up a furball now and again.

I was over in Wales at the weekend at another kfest. This won the best BMW bike.

"Best BMW"?  What kind of a meet was it?

WCMF 2023 (classicbiketrackdays.com)

I think the Aprilia group (who were beside us) picked the winner.