Author Topic: K1300GT - Battery  (Read 724 times)

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Offline Matt

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Re: K1300GT - Battery
« Reply #30 on: November 07, 2019, 03:18:15 pm »
I'm trying to ignore this thread now hehe, I can't spent more money!
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Brian c. 2019

Offline TomL

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Re: K1300GT - Battery
« Reply #31 on: November 07, 2019, 05:27:11 pm »
I have a couple of Bosch scopes and a Fluke hand held scope badged and marketed as an automotive scope by Bosch.

Good for checking Lambda sensors and displaying battery tests in a readable manner.

No equipment for reading the secondary circuit on the K which is tucked well out of the way beyond probes.
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Online Andym535

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Re: K1300GT - Battery
« Reply #32 on: November 07, 2019, 05:32:47 pm »
btw, There'll be a 1Kw, or thereabouts, magnetron in your microwave oven if you ever need one...  ;D
« Last Edit: November 07, 2019, 05:47:16 pm by Andym535 »
If it matters what gear you’re in, the engine’s too small.

Offline richtea

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Re: K1300GT - Battery
« Reply #33 on: November 07, 2019, 07:14:46 pm »
<thread_hijack>

btw, There'll be a 1Kw, or thereabouts, magnetron in your microwave oven if you ever need one...  ;D

My first ever job was designing magetrons to put into buoys. A magnetron in a buoy looks just like a decent-sized ship as it re-emits the radar signals it receives - an effective & cheap decoy.

I remember nothing of the real work, just the weird and wonderful bits:

- the magnetron 'bible' was a very rare book published in about 1948 to capture all the progress made during the war in print, and no progress had really been made since then, other than neater ways to manufacture them. The book was where you looked for formulae, design, ideas, etc. This was 1981!

- purchasing 2Mb of RAM for a Hewlett-Packhard PC at £20k (4* my annual salary), to calculate the ideal shape of the magnetron chamber for different frequencies

- a discussion with techies mocking whether 4G Bytes would ever be needed in a supercomputer, and how many bits the CPU would need to process at a time

- watching two extremely expensive and large rare earth toroid magnets flip over on themelves and shattering, watching the bits momentarily fly out and then sticking together again. But not in the same order. Oh. (6 month wait for new ones, at £5k / pair = annual salary. Luckily I wasn't the idiot who separated the pair without protection between them. They came with thick cardboard wedged between them. I wonder why.)

- getting drunk very cheaply in the company club/pub


But I did get a taste for coding.

The name of the company - Marconi-Osram Valves.
I'm a child of the valve age.  ;D

</thread_hijack>

Offline Matt

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Re: K1300GT - Battery
« Reply #34 on: November 07, 2019, 09:47:46 pm »
I was at Bletchley Park last weekend and read and heard a fair bit about Marconi! Double hijack boom!
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Brian c. 2019

Online Andym535

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Re: K1300GT - Battery
« Reply #35 on: November 09, 2019, 05:46:09 pm »
Here's a trace of the voltage (Blue) and current (Red) for the 1 second or so it takes the engine to start...



If it matters what gear you’re in, the engine’s too small.

Offline TomK1300s

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Re: K1300GT - Battery
« Reply #36 on: November 09, 2019, 06:09:50 pm »
Is your battery a year or two old Andy, a drop to 8volts is not good although it starts on the first stroke of the second revolution.
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Offline TomL

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Re: K1300GT - Battery
« Reply #37 on: November 09, 2019, 06:17:48 pm »
Time for a new battery Andy.
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Online Andym535

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Re: K1300GT - Battery
« Reply #38 on: November 09, 2019, 06:34:35 pm »
It's the  battery that was in the bike when I bought it. It's a genuine BMW one, so might even be the original (2013). It hasn't been started for weeks and it was quite cold in the garage today, and it also hasn't been on an Optimate or anything, so I was semi-surprised it started at all.
If it matters what gear you’re in, the engine’s too small.

Offline TomL

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Re: K1300GT - Battery
« Reply #39 on: November 09, 2019, 09:05:34 pm »
You'll have to check it again after you've used it for a bit.

Your scan shows clearly how useful a scope is for showing exactly what is going on.
As I have grown older, I've learned that pleasing everybody is impossible, but pissing everyone off is a piece of cake.

Offline Costas

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Re: K1300GT - Battery
« Reply #40 on: November 11, 2019, 06:24:06 pm »
Go for am expensive good quality Lithium battery you'll notice soon all the benefits.
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Offline S BMW

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Re: K1300GT - Battery
« Reply #41 on: November 11, 2019, 10:33:05 pm »
Came across this article there is a lot of info on it, I was 20 years old and finished reading when I was 22 years old as I got lost a wee bit .🥺 A lengthy and very in formative article to be fair but hey why doubt the Costas man hail Costas 🙌🏻   

 https://bmwmotorcycletech.info/newbattery.htm

Offline gibbo

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Re: K1300GT - Battery
« Reply #42 on: November 12, 2019, 09:00:18 am »
Go for am expensive good quality Lithium battery you'll notice soon all the benefits.


Hi Costas. Please educate me on what benefits there are, apart from the slight weight difference. I don't see it but you may prove me wrong.  ;)

Offline S BMW

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Re: K1300GT - Battery
« Reply #43 on: November 12, 2019, 06:15:20 pm »
I think bmer’s are hard on battery’s need a lot of crank power to get running. Battery link below

https://www.tayna.co.uk/

Online Andym535

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Re: K1300GT - Battery
« Reply #44 on: November 13, 2019, 01:46:47 pm »


Another battery test after an overnight charge with an Optimate 4. The charger is only rated at 0.8 amps so it'll take ages to charge fully, but the battery seems OK. Interestingly Pico Diagnostics thinks the starter motor resistance, including the wiring between the battery and motor, is slightly on the high side.
If it matters what gear you’re in, the engine’s too small.