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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: MEZ on January 01, 2018, 05:46:00 AM

Title: Your K75 Adventure is waiting..!!
Post by: MEZ on January 01, 2018, 05:46:00 AM
(https://uploads.tapatalk-cdn.com/20180101/e9b63a9fb3c41a827d95caf0577ce2dd.jpg)


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Title: Re: K75 Adventure is waiting..!!
Post by: The Dude on January 02, 2018, 12:14:29 PM
Awsome effort.interesting original solutions.I guess you haven't fixed that sound system on yet? :2thumbup:
Happy adventures,I'm on one at the moment as far from home as you can get but not on my bike.Sigh.
Title: Re: K75 Adventure is waiting..!!
Post by: Chaos on January 02, 2018, 02:01:18 PM
does it need the snorkel AND pontoons? :hehehe
Title: Re: K75 Adventure is waiting..!!
Post by: Skunky on January 02, 2018, 04:53:15 PM
 :clap:   Has it been built for a particular adventure? because the Berlin wall has already been knocked down.
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 02, 2018, 05:29:19 PM

What's this...... Motobrickers with a sense of humour, don't let the mods see it happening or we'll all get thrown off..!!


Anyway, regardless of anything, this machine is going around the world my fellow Brickers. I've built it to bounce of things, intimidate humans and preditors, carry all my shit, keep me warm on the hoof, shower me with hot water on demand, and last but not least, 450  mile between petrol stops. It may humour a lot of folk, it may repulse some but one thing for sure, it's as unique as they come and will intrigue genuine petrol heads and travelling folk alike..!!
Basically this build has been one of my most progressive in terms of how the concept design has changed from 'basic travel bike' into an exercise of Madmax engineering excellence . You'll love it in the flesh I guarantee...!!!

Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 02, 2018, 05:31:19 PM

Awsome effort.interesting original solutions.I guess you haven't fixed that sound system on yet? :2thumbup:
Happy adventures,I'm on one at the moment as far from home as you can get but not on my bike.Sigh.


I had to bin the sound system idea and go for blue tooth farkles instead, gutted...!!!
Title: Re: K75 Adventure is waiting..!!
Post by: Skunky on January 02, 2018, 06:12:30 PM
And if the Zombie apocalypse should occur, you will be prepared  :yow.
 :clap: I applaud your build. Had I been undertaking a similar challenge I probably would have been lazy and bought a Triumph Tiger.
I love the idea of big speakers. The Ride of the Valkyries blaring out would certainly make an impression. 
What upgrades have you made for the rough stuff and extra weight?.
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 03, 2018, 01:28:45 AM

And if the Zombie apocalypse should occur, you will be prepared  :yow .
 :clap: I applaud your build. Had I been undertaking a similar challenge I probably would have been lazy and bought a Triumph Tiger.
I love the idea of big speakers. The Ride of the Valkyries blaring out would certainly make an impression. 
What upgrades have you made for the rough stuff and extra weight?.
Hi Skunks, long story short, Alf Hagon rear remote rebound shock with uprated spring. Beefed mounting points. 50mm extension on swingarm + shaft. Front forks are 50mm KTM 'Extremes' again with one-off wound springs. Custom built 17/19" rear/front wheels with 4mm s/s spokes. TKC80's.
Title: Re: K75 Adventure is waiting..!!
Post by: K1300S on January 03, 2018, 06:11:28 AM
Is the platform behind the rider for the howitzer gun turrent on that tank? ;-)

Seriously, what is your expected fully loaded weight with rider?  500kg?  sounds like you have beefed up several components.  for the weight expected and abuse planned....final drive, driveshaft splines, transmission, clutch up to it?
Title: Re: K75 Adventure is waiting..!!
Post by: Filmcamera on January 03, 2018, 07:29:33 AM
I'd love to see a video of it in action  :riding:

Any chance?
Title: Re: K75 Adventure is waiting..!!
Post by: Skunky on January 03, 2018, 01:51:37 PM
Hi Skunks, long story short, Alf Hagon rear remote rebound shock with uprated spring. Beefed mounting points. 50mm extension on swingarm + shaft. Front forks are 50mm KTM 'Extremes' again with one-off wound springs. Custom built 17/19" rear/front wheels with 4mm s/s spokes. TKC80's.

I'd like to see more photo's, and you must Start a thread for the big trip. I'm looking forward to following the adventure.
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 03, 2018, 03:12:37 PM

Is the platform behind the rider for the howitzer gun turrent on that tank? ;-)

Seriously, what is your expected fully loaded weight with rider?  500kg?  sounds like you have beefed up several components.  for the weight expected and abuse planned....final drive, driveshaft splines, transmission, clutch up to it?


Targeted weight is about the same or slightly less than a laden GS which with the lesser HP engine of the K75 wont hinder my performance targets too much. I want to pootle and see the world not blast through breaking overlanding records in the process..!!  500kg fully fuelled two up fully kitted out ready for Zombies isn't too far away from a realistic weight. I focused heavily on weight when giving details to the suspension guy but don't have them to hand right now. The whole running theme of the bike is bomb proof but sad to say it's a BMW at the end of the day and BMW's break there drive shafts so I have done as much as I can but you cant beef up a drive shaft you can only maintain one and have a good back up plan in place ( ie; have one sitting on a shelf parcelled up ready for Feddex to collect..!!
Title: Re: K75 Adventure is waiting..!!
Post by: The Dude on January 04, 2018, 07:36:47 AM
Hey Mez,the brick is bullet proof.Including the drive components.There is one thing from my experience that may be a problem the fatigue failure of the rear subframe around the shock mount and on both sides from booting it on dirt road with corrugations.The cracks propagated from the underneath of the tubes an I found out about it when I lifted the back end to swing the bike into a tight parking spot.The tail went up too far when I lifted it!I suspect you have beefed up the shock mount at the top.


I welded webs in the crook of the tubes at the top and beneath both sides which required a bit of seat base cutting to close the seat and a hole drilled in the web that covered the access to the screw that holds the helmet lock(I think) or was it the catch mechanism the seat locks into.
If you're splines are good and lubed and that gear leaver grub screw is well in I would proceed with confidence.In my experience,from witnessing others,the most likely issue will be crash damage writing the bike off with this machine.I haven't done that yet myself.....
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 04, 2018, 08:13:07 AM
Yo Dude, good to get opinions on the engine and drive as this is my paranoia content...!!! As for the subframe and shock mount area, this is all new fabrication work to accept the GS1200 seat so it is well catered for. I'm on my new laptop which doesn't have my picture files loaded yet but will post up later. I'm hoping to get it all finished off this year and get some testing done, bout flipping time...!!!
Title: Re: K75 Adventure is waiting..!!
Post by: Markus77 on January 07, 2018, 11:17:14 AM
Wow - impressive work! Looks like you're happy with the results and it is certainly unique. Overall weight would be a concern for me depending on how much off-road terrain you have planned for your trip but I'm sure you've looked into that. I have a 1200gs and believe me it is a beast to pick up especially if you're in sand/mud etc. Looking forward to seeing some more pictures for sure!
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 07, 2018, 12:00:46 PM
Wow - impressive work! Looks like you're happy with the results and it is certainly unique. Overall weight would be a concern for me depending on how much off-road terrain you have planned for your trip but I'm sure you've looked into that. I have a 1200gs and believe me it is a beast to pick up especially if you're in sand/mud etc. Looking forward to seeing some more pictures for sure!
Hi Marcus, it’s planned terrain is anything you would encounter on a RTW trip with the wife on the back so not so much off road more so tarmac, Forrest roads light trails etc and yes me too, had my GSadv for 12 years now so am well equipped mentally. It’s the old argument of travel light or travel equipped..!!!


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Title: Re: K75 Adventure is waiting..!!
Post by: gappy on January 07, 2018, 06:52:44 PM
  Kool, I am impressed, but what is that big rack on the front for?
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on January 07, 2018, 07:03:16 PM
  Kool, I am impressed, but what is that big rack on the front for?

It hinges and grabs a dry bag/ bedding roll.


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Title: Re: K75 Adventure is waiting..!!
Post by: jakgieger on January 07, 2018, 08:44:56 PM
I like the bike :bmwsmile , safe travels.  Pictures or it never happened!
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on October 15, 2018, 01:39:40 PM
Attention 'Electrical' geeks. As a pretty ok sparky myself including auto electrics I seem to have a mental block when it comes to indicators. I am using some very robust LED lights sourced from the emergency services industry as indicators. I have had to integrate them using  GS1200 CAN-BUS style switch clusters and relays. My quandary is this, I have seen many LED friendly flasher units on ebay but I want to keep the hazard facility offered by the GS cluster. I have also spotted the many wiring diagrams on offer by Google image but which one is correct for my original K75 loom. Has anyone on here customising their Bricks used a retrofit LED compatable flasher unit keeping the hazard theme running...??? I would be in with a shout if the manual showed what went on inside these flasher relays but they don't so it will remain 'Witchcraft' until I find out...!!!! I know you can use resisters to get round this but they are too bulky for my application.
Any and all responses welcomed……

Mez
Title: Re: K75 Adventure is waiting..!!
Post by: Laitch on October 15, 2018, 02:26:32 PM
I have also spotted the many wiring diagrams on offer by Google image but which one is correct for my original K75 loom.
Any and all responses welcomed……
Without your showing us the diagrams you viewed, it's nigh impossible to identify which is correct. :giggles

Regardless, read this thread (http://www.motobrick.com/index.php/topic,659.msg31957.html#msg31957) in its entirety. It might have your solution within it. The trace-cutting technique seems to have worked for many here.
Title: Re: K75 Adventure is waiting..!!
Post by: Martini on October 16, 2018, 11:31:23 AM
I wouldn't mind seeing other pictures of the bike while you read about schematics...
Title: Re: K75 Adventure is waiting..!!
Post by: billday on October 19, 2018, 07:54:36 AM
Does this remind anyone else of Tim Tyler's K75?
Title: Re: K75 Adventure is waiting..!!
Post by: Laitch on October 19, 2018, 04:03:05 PM
I wouldn't mind seeing other pictures of the bike while you read about schematics...
Click on the link beneath the line under Mez's post—several photos can be found. Also, click on the Profile icon under his name in this thread, then click on Show Posts, and read some of the threads in which he has been involved.
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on November 07, 2018, 01:52:10 AM
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Exciting times, I decided to have a big push on the K75 project bike and it's stripped down with final welding and linishing being done to various frame sections plus some electroplating to the smaller ancillary brackets.
I have to say one thing here fellow Brickers, i am blown away by how compact and simple the engine/gearbox/drive unit is and looks. I am inspired by this and full of confidence for a big trip.

Also more importantly i have weighed individually all of the bike and have an estimated gross weight. Both me and my fabrication guru are a little suprised and encouraged by the fact we were expecting a far higher estimate.
Title: Re: K75 Adventure is waiting..!!
Post by: MEZ on November 07, 2018, 02:03:15 AM
I wouldn't mind seeing other pictures of the bike while you read about schematics...
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Title: Re: Your K75 Adventure is waiting..!!
Post by: billday on November 08, 2018, 12:31:43 PM
You're going to post pictures of this trip, right?
Title: Re: Your K75 Adventure is waiting..!!
Post by: thestza on November 08, 2018, 11:29:37 PM
this bike is fuggin badass.
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on November 09, 2018, 01:12:09 AM
this bike is fuggin badass.

Exactly...!! It's no good wrapping a 'Brick' in cotton wool when you throw it through a window...!!! Thank you
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on November 17, 2018, 02:07:54 PM
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Brand loyalty with colour has never been my strong point...!!!
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on November 20, 2018, 06:58:15 PM
 [ Invalid Attachment ]  New starter motor and 50 amp alternator....
 [ Invalid Attachment ]  We have 'onboard' shower facility by way of a 12 litre water pod and SOTO petrol stove...
 [ Invalid Attachment ]  Hide those capheads with some nicely turned washers...
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on November 20, 2018, 07:00:04 PM


* 56434470135__35BEC170-442D-4783-8BD8-539A80837008.JPG (128.88 kB . 640x480 - viewed 970 times) Sorry keep overriding pics here's the alternator starter pic
Title: Re: Your K75 Adventure is waiting..!!
Post by: Laitch on November 20, 2018, 07:18:47 PM
We have 'onboard' shower facility by way of a 12 litre water pod and SOTO petrol stove...
Fergawdsake! Where's the cotton candy machine and calliope? :giggles

Please reorient the shower heater photo, take another photo of it from a greater distance and post them.
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on November 21, 2018, 11:57:31 PM
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rebuild mode engaged.....
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on December 07, 2018, 02:23:29 AM
Slow but positive progress. Wheels on just sorting the clutch actuator arm and centre stand out, they are proving very fiddly to get working after powder coating...!!1 [ Invalid Attachment ]
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on December 18, 2018, 11:35:09 PM
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Title: Re: Your K75 Adventure is waiting..!!
Post by: duckhawk on December 20, 2018, 05:24:38 PM
Hot shower when camping.....

you have your priorities straight. :clap:
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on December 22, 2018, 11:01:33 AM
Fergawdsake! Where's the cotton candy machine and calliope? :giggles

Please reorient the shower heater photo, take another photo of it from a greater distance and post them.

sideways again fraid, WHY anyone..???


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Title: Re: Your K75 Adventure is waiting..!!
Post by: natalena on December 22, 2018, 01:16:30 PM
Fantastic heater set-up. Looks like it screams out the BTU's. Have you considered a perforated windscreen (quick mount tabs are already in place)? I only ask due to lot's of experience in windy environments, and how the heat transfer is severely diminished from flame to aluminum surface with a steady wind. A shield has us boiling water from snow at 17k within 7mins with an MSR 600 International...without, it takes forever and wastes fuel. Cheers
Title: Re: Your K75 Adventure is waiting..!!
Post by: The Mighty Gryphon on December 22, 2018, 01:26:24 PM
Why not use waste heat from the engine cooling system to heat water?  A small thermostat controlled bypass in the coolant circuit and a heat exchanger in the water tank will heat water to any temperature you want.  Free heat. 
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on December 23, 2018, 04:19:52 AM
I think simplicity wins the day here, I considered using a water jacket around the exhaust but then junked the idea after realising the difficulties of heat transfer from the exhaust to water pipes etc, I have a wind shield that comes with the Soto kit but it isn’t refined enough for this application so will make one like you say to fit the mounting tabs and perforated also. I fitted a pipe that ran to the rear of the tank to circulate the water as it heated intermittently and this definitely helped speed things along...
Title: Re: Your K75 Adventure is waiting..!!
Post by: Soggz on January 04, 2019, 07:00:28 PM
(https://uploads.tapatalk-cdn.com/20180101/e9b63a9fb3c41a827d95caf0577ce2dd.jpg)


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Crazy,man!
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on January 04, 2019, 10:52:34 PM
Crazy,man!


* IMG_3196.JPG (67.46 kB . 768x576 - viewed 802 times)
......"And then you add some Paint"...!!!!

Title: Re: Your K75 Adventure is waiting..!!
Post by: Kopia on January 08, 2021, 12:54:17 PM
I know that this thread went silent for quite some time but I really like your bike! Especially the frame around the engine and the color pattern! Is the front part of the frame (above front tire) your own idea or have you seen it somewhere? I'm not much into adventure bikes but this seems like great idea for weight distribution and additional cargo space. Are there adventure bikes that were inspiration for your project? And do you have pictures of your brick out in the wild?
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on October 15, 2022, 06:22:20 AM
Wooooooo, it's been ages and ages.....!!! Hope the Brick community are all doing good and coping with all the global BS that's going on..??? 

Here's a shot of the bike with it's snout loaded up..!!!

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Title: Re: Your K75 Adventure is waiting..!!
Post by: frankenduck on October 15, 2022, 08:15:28 AM
500 kg?  That won't be easy to pick up if it takes a nap.

What the fuel capacity and range?
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on October 15, 2022, 08:58:30 AM
RE: 500kg.... When I stripped the build down to powder coat I weighed all components and I mean everything and it totalled 280kg including some fuel left in tank and engine oil. As far as the bike being dropped and too heavy to lift I've gone too far now and answered that one too many times to care. It's a 'Brick' and not a GS12 and I love it to bits...!!!
Fuel capacity is around 43 litres so I guess at 40mpg that's a range of approximately 370/380 miles which ain't too shabby. Will it do that mileage in real life who knows, time will prove.....
Title: Re: Your K75 Adventure is waiting..!!
Post by: MEZ on February 15, 2023, 10:39:05 PM
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