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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: Gaz343 on January 23, 2020, 09:28:00 AM

Title: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 09:28:00 AM: Hi Everyone,

I have started my K1100 cafe racer build and as i have used this site to gather a lot of technical information i think its only fair that i share the build with you.

My previous builds have been Harley Davidson so a lot of this is new to me.

Donor bike 1196 K1100LT 38,000 miles

(https://www.motobrick.com/gallery/2/6798-230120092651.jpeg)
Title: Re: K1100 Cafe Build
Post by: johnny on January 23, 2020, 09:32:38 AM: greetings...

looks like junk... both of them... may as well take them to the crusher...

j o
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 09:33:31 AM: Progress so far.
All the parts that are no longer required

(https://www.motobrick.com/gallery/2/6798-230120090519-26901892.jpeg)

Starting point.

(https://www.motobrick.com/gallery/2/6798-230120090515-26892216.jpeg)

Engine out ready for cleaning and painting black

(https://www.motobrick.com/gallery/2/6798-230120090436-26551164.jpeg)
Title: Re: K1100 Cafe Build
Post by: johnny on January 23, 2020, 09:35:59 AM: greetings...

needs a new yolk...

j o
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 09:39:00 AM: I bought the plans for rear suspension modification from Lorenzo, a few pictures below of the machining process.

(https://www.motobrick.com/gallery/2/6798-230120090441-26641918.jpeg)

(https://www.motobrick.com/gallery/2/6798-230120090441-26642084.jpeg)

(https://www.motobrick.com/gallery/2/6798-230120090444-2666508.jpeg)

(https://www.motobrick.com/gallery/2/6798-230120090444-26661053.jpeg)

I would love to take the credit, although its technically my machine i would have the first idea where to start programming it.
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 09:46:28 AM: Engine painted

(https://www.motobrick.com/gallery/2/6798-230120090447-26691267.jpeg)

Frame cut and modified

(https://www.motobrick.com/gallery/2/6798-230120090452-26731255.jpeg)

Starting to look like something

(https://www.motobrick.com/gallery/2/6798-230120090459-26771767.jpeg)
Title: Re: K1100 Cafe Build
Post by: The Mighty Gryphon on January 23, 2020, 09:47:50 AM: Quote from: Gaz343 on January 23, 2020, 09:33:31 AM
Progress so far.
All the parts that are no longer required

(https://www.motobrick.com/gallery/2/6798-230120090519-26901892.jpeg)

Starting point.

(https://www.motobrick.com/gallery/2/6798-230120090515-26892216.jpeg)

Engine out ready for cleaning and painting black

(https://www.motobrick.com/gallery/2/6798-230120090436-26551164.jpeg)

How much for the bar stool? How much for the rear loop?
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 09:52:14 AM: Rear suspension fitted

(https://www.motobrick.com/gallery/2/6798-230120090511-26852130.jpeg)

Front forks fitted

(https://www.motobrick.com/gallery/2/6798-230120090515-2687781.jpeg)

This is pretty much where it is now, frame off to be powder coated this week

(https://www.motobrick.com/gallery/2/6798-230120090509-268462.jpeg)

Thats me up to date with the build, I suspect my posts will be less frequent going forward
Title: Re: K1100 Cafe Build
Post by: duckytran on January 23, 2020, 10:01:23 AM: Looks good! Are you doing the same seat setup as Lorenzo?
Title: Re: K1100 Cafe Build
Post by: billday on January 23, 2020, 10:07:13 AM: Need to turn cup holders 90 degrees.
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 10:11:48 AM: Yes, plan is for the same seat setup, currently being fabricated.

As for the "cup holders" i agree but my son like them facing out, they are currently facing inwards, the debate goes on.
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 12:16:20 PM: Another suspension picture

(https://www.motobrick.com/gallery/2/6798-230120090506-2682774.jpeg)
Title: Re: K1100 Cafe Build
Post by: Laitch on January 23, 2020, 01:00:49 PM: Thanks for providing the photos. The seat angle looks like it might require specialized undergarments for damage control but it'll probably be as comfortable as a road-racing bicycle's.

Nouveau Brick customizers frequently seem baffled by alternative fork attachment. Maybe you could supply a brief description of your insight into the process.

If I had my moto under a cover in the shop like you have your motos, it'd be shredded by mice and decorated by them with fecal plaster during its six months of storage. I guess that's what comes from living in Vermint.
:laughing4-giggles:
Title: Re: K1100 Cafe Build
Post by: Arktasian on January 23, 2020, 01:32:51 PM: By way of interest, how are you treating the removal of the MAF "air flapper" control circuit with the removal of the intake plenum? (or perhaps that was previously hacked before you got the bike). Without it, the ecu isn't going to be doing a very good job.
Title: Re: K1100 Cafe Build
Post by: Laitch on January 23, 2020, 01:53:43 PM: Quote from: Arktasian on January 23, 2020, 01:32:51 PM
By way of interest, how are you treating the removal of the MAF "air flapper" control circuit with the removal of the intake plenum?.
A 4V engine like the K1100's doesn't have the air flow sensor found on your 2V K75. It does have an air temperature sensor. Maybe its location or adaptation will be explained.
Title: Re: K1100 Cafe Build
Post by: Arktasian on January 23, 2020, 04:00:30 PM: Noted 112350
Title: Re: K1100 Cafe Build
Post by: johnny on January 23, 2020, 04:02:43 PM: greetings...

needs twin rear shocks...

j o
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 23, 2020, 04:33:50 PM: As stated above, no MAF on the 1100, not sure where to mount the temp sensor, it was in the airbox, I think as long as it's near the intake it will be fine.
This was the reason I went for the 1100 as the intake pipes were always part of the design.
Title: Re: K1100 Cafe Build
Post by: johnny on January 24, 2020, 09:51:17 AM: greetings...

needs a custom radiator...

j o
Title: Re: K1100 Cafe Build
Post by: Gaz343 on January 24, 2020, 10:29:27 AM: Removing the airbox leaves loads of free space, i did think about relocating the radiator, but failing that there are some nice alloy radiators available.
Title: Re: K1100 Cafe Build
Post by: Skunky on February 12, 2020, 08:10:13 AM: Hi Gaz, Like your build I think the Retrorides set up looks good. What a brilliant thing to have access to an industrial cutting machine. Did you machine the Yokes. If not I've seen top yokes that have been machined to incorporate the Speedo. Mainly very small ones like the Motorgadget Motoscope. Which I wouldn't be able to read without glasses. Like Laitch I would be interested in your front forks set up. I'm guessing that they are GSXR forks. I'll be looking out for you at Matlock in the summer.
Title: Re: K1100 Cafe Build
Post by: Gaz343 on February 14, 2020, 10:25:21 AM: Hi,

Yes Correct, GSXR 750 forks, 2010 i believe, i have had the top yolk manufactured by a company called TopYolks UK, fantastic job.

(https://www.motobrick.com/gallery/2/6798-140220101136.jpeg)

I will be using the motoscope pro gauges.

Frame is back from powder coating and back on the bike.

(https://www.motobrick.com/gallery/2/6798-140220101802.jpeg)

Just waiting for the clip ons to arrive so I can start making good progress.
Title: Re: K1100 Cafe Build
Post by: Gaz343 on March 02, 2020, 06:31:49 AM: Made some progress this week with the seat hump.

(https://www.motobrick.com/gallery/2/6798-020320062836-27722486.jpeg)

(https://www.motobrick.com/gallery/2/6798-020320062836-2772701.jpeg)

(https://www.motobrick.com/gallery/2/6798-020320062839-2773929.jpeg)

Also started the wiring for the handlebar switches, i would say the wiring is bit bit i'm dreading most.

(https://www.motobrick.com/gallery/2/6798-020320062843-2776909.jpeg)

(https://www.motobrick.com/gallery/2/6798-020320062841-2775940.jpeg)

(https://www.motobrick.com/gallery/2/6798-020320062840-27742271.jpeg)
Title: Re: K1100 Cafe Build
Post by: Gaz343 on March 02, 2020, 06:34:14 AM: I have a plan to replace the coils with a modern coil on plug system, looking to use GSXR 600 units, this is really to remove the big old units as they are quite ugly.

Anybody seen this done before ???
Title: Re: K1100 Cafe Build
Post by: Laitch on March 02, 2020, 07:44:28 AM: Quote from: Gaz343 on March 02, 2020, 06:34:14 AM
Anybody seen this done before ???
Do you mean done this before on a Brick? By now you understand how the Brick ignition and ECU work together. You also know the requirements of the Gixxer c-o-p system. How would the Brick differ from the Gixxer?

From what I've read in the last five minutes, one challenge to the proper function of coil-on-plug systems is excessive heat. Also, fitting them into the space provided by the head for the spark plug might be challenging, so measurements must be taken. You're the innovator; take up the challenges and lead the way. icon_cheers You look to be doing pretty good work so far.

I think yours is an interesting idea although I'm too insensitive to be repelled by the look of Brick coils. :laughing4-giggles:
Title: Re: K1100 Cafe Build
Post by: johnny on March 02, 2020, 08:01:16 AM: greetings...

the society of cappuccino craftsmen and dumpsters approves of this build...

just wish it had a custom radiator...

j o
Title: Re: K1100 Cafe Build
Post by: Gaz343 on March 02, 2020, 08:52:29 AM: Hi Laitch,

I can make them fit easily enough by making some spacers to make the plug cover sit higher, below is my thinking on the wiring, It looks to me like the coil if fed +12v from the ignition and the ECU is the switch to earth.

(https://www.motobrick.com/gallery/2/6798-020320084535-27781630.jpeg)

Will it work, in theory yes but who knows, i have researched and not seen this done on a brick but definitely on other bikes with traditional coils.

Time will tell.
Title: Re: K1100 Cafe Build
Post by: billday on March 02, 2020, 09:41:20 AM: Quote from: Gaz343 on March 02, 2020, 06:34:14 AM
I have a plan to replace the coils with a modern coil on plug system, looking to use GSXR 600 units, this is really to remove the big old units as they are quite ugly.

Anybody seen this done before ???

Uncharted territory. Look forward to seeing what you come up with and how it works.
Title: Re: K1100 Cafe Build
Post by: Skunky on March 08, 2020, 12:04:46 AM: BSK Speedworks sell an aftermarket racing engine management system for the K Bikes as they race them. Just take out an extension on your mortgage to buy one.

http://www.bskspeedworks.co.uk/engine-management-package.html
Title: Re: K1100 Cafe Build
Post by: Shonkster on June 11, 2020, 08:39:09 AM: Gaz, wondering what spoke wheels you are using?

R1150GS rear and R100R front or GS front as well?
Title: Re: K1100 Cafe Build
Post by: Lleksam on August 25, 2020, 10:02:56 AM: Looking good well done, I have a K12lt trike and bought a K11lt over the weekend to just this with, where in UK ae you?

Steve