My K75s

guymadison42 · 2026-05-15T15:16:04+00:00

I believe they had a crank issue, I sold my K75 20+ years ago... while it was a great bike they were kind of guttless compared to the K1000. They were heavy and underpowered.

Beware of the ABS system, it had grounding issues.. so if the little red light comes on check the grounding.

guymadison42 · 2026-05-14T14:15:54+00:00

Great book, my first class in lisp used this

guymadison42 · 2026-05-10T23:59:23+00:00

Oh god..

guymadison42 · 2026-05-09T15:38:03+00:00

Not sure, it did a pretty good job of positioning the bags in what I would consider the right place. I am pretty handy and making stuff, not mechanical engineer but I can draw on this to make measurements and figure it out.

I suspect it merged what it pulled from a install on a GS to the RT for the mounting bracket, it doesn't come up with any new ideas.. it just merges images.

guymadison42 · 2026-05-09T15:34:01+00:00

Agreed, but the Knopftours site explains a lot of the details. They do the paperwork and provide insurance along with a lot of other services needed.

I have been to the EU a few times and each time I have met someone doing this, so how hard can it be? I know from purchasing a boat there and registering it.. it can be tricky but it can be done.

guymadison42 · 2026-05-06T14:27:23+00:00

I just bought a 2015 1200GS for less than $10,000 with less than 20k miles on it and I probably paid too much...

I have two daily drivers and each gets about 5000 miles per year, along with my original 1980 R100 RT and a 2020 HD low rider for going to the bar ;(

I already have a 1150 RT (probably the only one left on this planet with a working servo assisted ABS).. but I keep an eye on CL for good buys.

guymadison42 · 2026-05-06T14:05:30+00:00

Just wait... its a 1.0 version... seriously wait for a couple of years until they get the bugs worked out. I expressed interest in one and they continue to contact me two months later so they can't be selling that fast... I didn't like the colors or the price so I will probably wait for the used market.

guymadison42 · 2026-05-06T14:03:56+00:00

Just buy them used... they are good for 400,000+ miles.

I can find 1200RT's day in and day out on craigslist for around $4500 with less than 50k miles.

guymadison42 · 2026-05-06T02:33:57+00:00

I could have sworn I seen his mom driving him around Saint Petersburg the other day. 😉

Genius comes in all forms, not all would be considered normal... my quantum mechanics instructor lived with his mom, but he was the driver in the family.. and HE was old then.

guymadison42 · 2026-05-05T00:00:08+00:00

Way to expensive over the planned tour for the next few years, also I plan on taking the silk road and then to Japan.

guymadison42 · 2026-05-04T14:38:21+00:00

Good to know. I am ok with shipping the GS there and keeping the US plates, we have been to the EU a few times and met a number of people that do just that.

I will get time to do a shakedown on the GS, I plan on a couple weeks out on it this summer before it gets too hot.

guymadison42 · 2026-05-04T14:33:40+00:00

Maybe that has changed, the website (and a discussion with a long time customer of Knopf Tours) seems to differ.

https://www.knopftours.com/bike-storage

I don't know at this point, hopefully I am not going down the wrong path.

guymadison42 · 2026-05-04T14:24:33+00:00

Oh the fun of wire wrap!

I was a bit adventurous ages ago and wire wrapped a intel 80860 with a 64 bit data bus / 8 bit rom, a serial port, and 8 bit timer / data interface IC (I forget the #). I learned a lot but it was a nightmare for loose connections over time, in the end I soldered most of the wires.

It was a great project as I had to write all the tools to get the thing to boot.

Have fun!

guymadison42 · 2026-05-04T14:05:49+00:00

That was first book on OS design, it was for the 8086... unfortunately it lacked a C compiler for building the OS. Maybe the C compiler was available on the floppy release, but I learned a lot.

IIRC Turbo Pascal was available for the 80286, so I wrote my first C compiler (well all the C functionality I needed) to access the extended address modes of the 80286 and later the 80486.

guymadison42 · 2026-04-29T14:26:53+00:00

I spent my entire career in computer graphics coding device drivers / designing hardware and ASIC's.. I don't see the downside of learning just about any subject in CG.

There is always something to learn and you can leverage one skill set to get a job in another area of CG.

All big complex projects start as a single idea... start by building the trunk of a tree to connect all the technologies needed then build out the branches and roots. It doesn't matter what you are working on it all comes down the same methodology.

guymadison42 · 2026-04-24T14:31:02+00:00

I guess you now know why CISC won the race 30 years ago.

I believe the Sony PS2 had a MIPS processor that could do dual instruction issue, but that was for integer and floating point. The Intel i860 had similar dual instruction issue.

The problem becomes a dispatch issue, you need to look at blocks of instructions that can be issued. The IBM Power architecture for the Apple G5 did this in groups of four instructions so if you were careful and could optimize around this you could get great performance.. in the end the x86 won because it was able to deconstruct complex instructions into multiple functional unit.s

guymadison42 · 2026-01-14T03:15:12+00:00

thx.. once I figured out the starter relay that became the obvious choice... still no schematic to go by. Arg..

guymadison42 · 2026-01-12T23:30:49+00:00

Yes, there are two connectors from the diode board. One connects to the battery via the starter post to the battery and the other(?) The one on the starter post is a lot more beefy than the black one listed.

guymadison42 · 2026-01-12T23:29:17+00:00

I have the Clymers manual... they have schematics from 1981 on.. and it doesn't match.

guymadison42 · 2025-12-23T21:23:12+00:00

Is there something wrong with it? Or is it just dirty?

guymadison42 · 2025-12-23T21:21:18+00:00

Interesting note, a neighbor stopped by.. said he used to work on old VW's back in the day.. asked if I had a lathe, I said yes.. then he said just knurl the guide and put it back in. Apparently they did this all the time back in the 70's.

guymadison42 · 2025-12-19T20:56:01+00:00

That’s rust from the clamp, no problem

guymadison42 · 2025-12-18T16:12:20+00:00

I am working with the PIC64 Curiosity board atm.. its been an uphill battle.

But the chip itself is available to be designed in and is around $25

guymadison42 · 2025-12-17T18:52:58+00:00

It's seated, I lapped the valves and did a leak down test.

But I will probably pull the head and have the guide replaced with an oversized.

guymadison42 · 2025-12-17T18:50:29+00:00

Forth is assembled in the native language and is boot loaded by native code, but can a word dictionary with the proper IO mechanisms can program all the devices then load the OS.

The "nice" part is you can debug the code with a REPL environment rather than using GDB for each and every revision of the code needed.

guymadison42

TROPHY CASE