A Swede and his BMW K100 build

[Laitch]

Then i dont know if it is using a Lithium or Liefpov4 charger, whatever that is, anyone who can enlighten me on this?

This refers to a charger dedicated to lithium batteries when you're charging the battery off the bike or when its not being run regularly. Ordinary trickle chargers aren't recommended. Anti-gravity sells these chargers.

BMW should be able to verify the regulator output. You can test it yourself with a multimeter—plenty of Youtube and Google information available. If BMW can't—or you can't—just ask a bunch of strangers then pick the answer you like.

[lalilulelo]

Then i dont know if it is using a Lithium or Liefpov4 charger, whatever that is, anyone who can enlighten me on this?

This refers to a charger dedicated to lithium batteries when you're charging the battery off the bike or when its not being run regularly. Ordinary trickle chargers aren't recommended. Anti-gravity sells these chargers.

BMW should be able to verify the regulator output. You can test it yourself with a multimeter—plenty of Youtube and Google information available. If BMW can't—or you can't—just ask a bunch of strangers then pick the answer you like.

Oh i see, so they were giving me advice on how to charge the battery externally if i needed to do that even though the anti gravity batteries should last up to 1 year. Thanks for clarifying this!

[Laitch]

Anicca permeates everything, including Anti-Gravity batteries. They are light though.

[lalilulelo]

Anicca permeates everything, including Anti-Gravity batteries. They are light though.

Dont really get what you're trying to say mate.

[Laitch]

Nothing is going to last, even Anti-Gravity batteries are going to need to get charge sometime.

[lalilulelo]

Nothing is going to last, even Anti-Gravity batteries are going to need to get charge sometime.

Yes of course, they just confused the crap out of me when i asked if the battery will fit my bike and they started blabbering abouth Lithium and Lifepov4 and so on.

It seems like the voltage regulators on the K models are between 14-14.5 Volts and that should be within the Anti Gravity batteries limitations, im just curious about since it is a old bike if it will "slaughter" the battery faster. Read some were that one should buy a MOSFET regulator to keep that powerful battery in line.

I mean since the bike didnt know what to do with a LED signal from an indicator without modifications maybe the voltage regulator needs modifications to?

This is just me thinking.. 

[enb54]

These batteries must not ever be overcharged, so it is important to ensure your electrical system is OK for whatever brand of Lithium exotic metal battery you use. Google LiFePO4 battery and LiFePO4 charger, plus a quick read of https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery will likely put you on the correct technical track, or you can ask someone who has used them on their machine. I have familiarity with them in communications electronics, but not vehicles... they are fussy but very light...

[lalilulelo]

If anybody see's this and use an antigravity battery on their K bike feel free to add some information :)

[Andrewck]

Love what you're doing with the bike!!  You have me second guessing my seat fabrication...you're looks great and is very straight forward.

On a side note...had my first visit to Sweden last summer and spent just a day in Stockholm...pricey, but what a great country.  Would love to head back and rent a bike to take through those beautiful forests and lakes you have.  Keep up the work on the bike and look forward to seeing things unfold.

[lalilulelo]

Love what you're doing with the bike!!  You have me second guessing my seat fabrication...you're looks great and is very straight forward.

On a side note...had my first visit to Sweden last summer and spent just a day in Stockholm...pricey, but what a great country.  Would love to head back and rent a bike to take through those beautiful forests and lakes you have.  Keep up the work on the bike and look forward to seeing things unfold.

Thank you, much appreciated, i like what you're doing with your bike to, already commented on it in your thread :)

Glad to hear you enjoyed Sweden, it is beautiful in the summers!

[lalilulelo]

When i dissasembled my bike i ruined the ignition switch, i can still turn on the ignition but i have to use a knife or a screwdriver.

Looking for a new ignition switch with key, i was wondering if i can buy any BMW K ignition switch and will it work with my 91 K100 LT?

There are a lot of them on ebay and some are cheaper so thats why im asking.

Im thankful for any kind of help!

[lalilulelo]

Another question, hopefully somebody knows the answer to this one.

I have connected all the lights now (headlight, backlight, turnsignals etc) and it works fine.

Decided to connect the old breadbox speedometer just to check if the neutral light works right, every time i tilt the gas tank backwards the N light turns on (its the only way to make it turn on). Otherwise i have to hold the clutch down to start the bike, i know that somewhere something is not connected right.

Maybe someone here knows the solution to the problem?

edit : Everything worked fine before we dissasembled the frame for repainting, surely it has to do something with me not connecting all the wires properly?

I recently bought a BEP 2.0 and the bike is supposed to start without holding the clutch when it is in neutral, but the only way to "trick" the bike in to neutral is to tilt the gas tank backwards, does the reserve fuel indicator and the neutral indicator have something to do with each other?

Sorry if im asking a lot of question but i have no idea where else to turn with these problems

[Brad-Man]

Are you sure you have good grounds after the frame painting?

[lalilulelo]

Are you sure you have good grounds after the frame painting?

I cant say for sure that the grounds are good but the bike starts and all of the lights works.

If i recall it right there are two grounds? One for the battery next to the gear lever and one on the middle front of the frame

Is it possible that the neutral switch can get  lit when the gas tank is tilted backwards because of bad grounds?

[lalilulelo]

So im pretty much finished with the build, the reason why the neutral light wont get lit is because of the GPI that is hidden behind the swing, seems like it is a common problem with the K bikes, many choose to just accept this and hold down the clutch when they want to start the pike. Maybe i look into it sometime when i need to dissasemble the swing but right now it just feels like it isnt worth the time and the effort just to be able to start without holding down the clutch.

Im happy with how it turned out, just need to fix the ignition switch (already on it, soon done), the rear brake light sensor (ordered one of those that were fitted in the k bikes from before 86, fits my rearsets) and also install the registration plate.

I would like to buy a new battery and also change my coolant reservoir to something smaller and get the "triangle" in the frame more spacious and clean, probably something i will do after the summer, right now im just interested in driving the bike :)

[johnny]

battery needs a gaitor like your forks...

gaitors on naked motobricks... its a trend...

whack...

j o

[Laitch]

gaitors on naked motobricks... its a trend...

I'm seeing the same trend over at tragkorb.com.

[docrocket]

Bike looks awesome! Love the black wheels