BMW K bikes (Bricks)


You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Idle speed....  Empty Idle speed.... Wed Nov 14, 2012 10:58 pm

twincarb

twincarb
Life time member
Life time member
How do you confirm that the idle speed that the tacho is telling us is correct... I know there is an adjustment that can be made inside if it isn't right. But what method is used to confirm in the first place it is correct....
I guess this may really be electrical mind hehe Wink


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

2Back to top Go down   Idle speed....  Empty Re: Idle speed.... Wed Nov 14, 2012 11:57 pm

club_c

club_c
Life time member
Life time member
I would recommend pulling the number 1 sparkplug wire, putting a screwdriver into it and hold onto the screwdriver shaft. While the engine is running, count the number of electrical pulses for 60 seconds, and then divide by 2 (remember: wasted spark system). That should give you an accurate RPM to work from...Smile


__________________________________________________
"There's never enough time to do it right, but there's always time to do it over."

1988 K100RS SE VIN 01477554
    

3Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 12:02 am

charlie99

charlie99
VIP
VIP
Idle speed....  318212Idle speed....  44271


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

4Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 12:02 am

Rick G

Rick G
admin
admin
Idle speed....  44271and my eyes are watering too


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

5Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 1:19 am

Guest

avatar
Guest
affraid affraid

    

6Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 2:53 am

Rick G

Rick G
admin
admin
Now for a serious reply TC I dont have any way of checking but once upon a time in another life I has a ignition timing light that would read the rpm according to the plug pulses that clubie wants you to hang onto. There probably are the same items available today but I dont use them anymore as I dont have a need, mine broke and it went into dumpster.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

7Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 3:50 am

klompy the grey brick

klompy the grey brick
VIP
VIP
club_c wrote:I would recommend pulling the number 1 sparkplug wire, putting a screwdriver into it and hold onto the screwdriver shaft. While the engine is running, count the number of electrical pulses for 60 seconds, and then divide by 2 (remember: wasted spark system). That should give you an accurate RPM to work from...Smile



OUCH!!! won't you lose count easily as youre getting electricuted?....hey my hair has grown back!!:afro:


__________________________________________________
KKlompy Idle speed....  2854237993
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)

Idle speed....  Au-log10


    

8Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 5:44 am

charlie99

charlie99
VIP
VIP
some "auto" digital meters have a count cycle on them ....for tacho functions ...a good way to do it would be to tap into the injector pulses and divide by something . maybe 2 ?


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

9Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 7:12 am

Hover K100

Hover K100
Silver member
Silver member

https://www.youtube.com/user/HoverIreland?feature=mhee
    

10Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 7:41 am

charlie99

charlie99
VIP
VIP
Hover K100 wrote:I use one of these:
[url=http://www.ebay.co.uk/itm/180697823584?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
http://www.ebay.co.uk/itm/180697823584?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649[/quote[/url]]

yep a nice cheep solution hover ....you would only need it for a short time to calibrate the guage ...as i dont think they stop working that often ..

could this be an ideal solution to pass around all the friends on the forum ....?

of corse a small contribution to the purchaser ...and "mail on freight cost" would certainly help ....

hey this thing could feasably circumnavigate the world several times huh ?


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

11Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 8:05 am

twincarb

twincarb
Life time member
Life time member
the replies have had me laughing away this morning! Logically using the HT lead I have calculated I need to stand in a pool of water without shoes on in order to get an accurate reading affraid

I am thinking the safer option would be to measure from the low side of the Coils as that would be getting the signal to fire the HT side.

I think i have identified a tool that will do the job, designed for classic cars.... and with it being a wasted spark system the maths should speak for themselves... the tacho will read in the region of 1000-2000 but the readout would either be half or double what it should be so should be obvious....

The only reason I am looking to do it is because I had to do a repair to the tacho in which one of the legs had broken off I replaced it with a piece of wire which i suspect would have lower resistance but not sure how much difference and if it would be sufficient to cause a noticeable difference...


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

12Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:23 am

K75cster

K75cster
Life time member
Life time member
A wasted spark system fires on every up stroke just like a 2stroke would so its gonna read equal to rpm. I reccon the count method is for speed freaks as i cant hardly keep up with the cpr count - remember 1 thousand and 1 etc


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

13Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:40 am

Inge K.

Inge K.
VIP
VIP
A easier way to count when using the first metod.

1. Put the laptop at the seat.
2. Turn on the camera, in the direction to your face.
3. Start the bike, and grab the HT wire.
4. Run the bike untill you feel your nose starts to vibrate.
5. Watch the clip afterwards, count the number of times your eyes turn wide open during one minute.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

14Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:43 am

K75cster

K75cster
Life time member
Life time member
ooh ooh slow mo on a video, now that would be something


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

15Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:46 am

twincarb

twincarb
Life time member
Life time member
I have no wheels on the bike at the moment! Just about to take them to get some new rubber on them, so can't move the bike at the moment but when I get back I will move the bike and get a video... I suspect that I may have trouble in counting back the number of time's my eyes go wide so will post it here for the normal site assistance! Shocked


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

16Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:52 am

K75cster

K75cster
Life time member
Life time member
Idle speed....  44271 Normal site assistanceIdle speed....  44271 Normal??


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

17Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:54 am

charlie99

charlie99
VIP
VIP
wheels ........?

who needs wheels ?

cummon twincarb ...get the jack ...or block of wood under the sump going ....your just making excuses now ! Idle speed....  44271


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

18Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 10:03 am

Inge K.

Inge K.
VIP
VIP
Close to the redline:
......Marty`s left eye indicates a slight misfiring.

Idle speed....  Mv5bmt10


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

19Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 10:21 am

charlie99

charlie99
VIP
VIP
bwahahahahah ...classic inge .....thanks for the belly laugh !


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

20Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 10:25 am

blaKey

avatar
Life time member
Life time member
Seriously friggin' hilarious Inge! Very Happy Very Happy Very Happy


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

21Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 10:45 am

Rick G

Rick G
admin
admin
Thanks Inge haven't laughed so much for ages Idle speed....  44271 Idle speed....  44271 Idle speed....  44271


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

22Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 3:25 pm

twincarb

twincarb
Life time member
Life time member
Ok I got a multimeter which is capable of measuring the rpm by taking an inductive measurement from the HT leads. It is reading 1988 so not sure if it's reading the year the bike was made or if I need to half the reading! Wink Which would put it very close to 1000 rpm. So I am happy for today.... going to try and balance the throttle bodies tomorrow and in a couple of days will get around to checking the idle mixture with a CO tester...


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

23Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 4:07 pm

charlie99

charlie99
VIP
VIP
good work twincarb ..im impressed !

now throttle bodies and mixture settings are a whole new experience ... good luck !


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

24Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 4:11 pm

twincarb

twincarb
Life time member
Life time member
From what I understand it's identical to setting up 4 carbs on any other bike..... Get the bike nice and warm. Connect the test equipment up to the bike, make adjustments to make sure that all 4 are even..........

Seem to recall some sort of warning that they are a nightmare mind................................


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

25Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 4:19 pm

charlie99

charlie99
VIP
VIP
yep ...it is quite simple ...well if they were 20 years younger ..

its just the rubber issues we find (out here especially) giving vacuume leaks and stuff ..maybe its all the sun we get ?


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

26Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 5:10 pm

twincarb

twincarb
Life time member
Life time member
I guess it is a mix of the bikes own heat on top of it and age. I am hoping that things will work out smooth for me... Just been out and grabbed a couple of T pieces so I can keep the vacuum connector jobby connected....

I guess I will know if I am on a loosing streak if I really struggle to get my gauges to settle down.... This time tomorrow I should know if I am in business lol


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

27Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 8:32 pm

sidecar paul

sidecar paul
Life time member
Life time member
Of course I would go for the mechanical approach, stuff this on the crankshaft by the ignition sensor.

Idle speed....  Sam_0325

Can I ask why you need to know an accurate RPM reading?

Paul.

PS my outfit idles smoothly at around 600 RPM. (on the tacho, that is)


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

28Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 8:43 pm

twincarb

twincarb
Life time member
Life time member
Hi Paul,

The only reason I was more curious than anything else is because of the repair I did to the tacho which involved replacing one of the legs which connects to the dial and carry on onto the circuit board. This meant that I had no idea what the reading had changed by.... It's also one of the tune up jobbies before adjusting the throttle bodies the idle should be set. As I wasn't sure if I was between 900 and 1000rpm. I now know that I am set to 1000rpm or just under.

I now know that I am approx 200rpm over on the tacho at idle... At some point I may adjust it to show a truer reading!

meter This is the meter I got which isn't to expensive and will be of use on the spitfire when I get the engine running...

You can borrow my meter and see what it reports your outfit as hehe Wink I have to agree that a mechanical device connected to the crankshaft is the ideal way of measuring it and to use a piece of electronics would need a couple of hundred £ spending to ensure the accuracy of it.


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

29Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:25 pm

Crazy Frog

Crazy Frog
admin
admin
This is one of the funniest post that we ever had.

Please don't start to push members of this forum to suicide. Idle speed....  Smiley10



__________________________________________________
Idle speed....  Frog15Idle speed....  Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

30Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:33 pm

twincarb

twincarb
Life time member
Life time member
CF

Are you suggesting that I shouldn't post a video of some of the possible suggestions and that I should't post it into the How to Section.....

Think I am going to have a quick read of the rules to check that it wouldn't be breaking them.... or is the rush now on to amend the rules before I can get a video posted! Wink Razz


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

31Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 9:46 pm

Crazy Frog

Crazy Frog
admin
admin
twincarb wrote:CF

Are you suggesting that I shouldn't post a video of some of the possible suggestions and that I should't post it into the How to Section.....

Think I am going to have a quick read of the rules to check that it wouldn't be breaking them.... or is the rush now on to amend the rules before I can get a video posted! Wink Razz

I believe Club_C should demonstrate his idea into the 'how to section'.

It would be impressive to see a video of Club_C tied to the ignition coils of the bike and going uphill on the ski slopes of BC.

Idle speed....  44271


__________________________________________________
Idle speed....  Frog15Idle speed....  Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

32Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 11:32 pm

club_c

club_c
Life time member
Life time member
Crazy Frog wrote:

I believe Club_C should demonstrate his idea into the 'how to section'.

It would be impressive to see a video of Club_C tied to the ignition coils of the bike and going uphill on the ski slopes of BC.

Idle speed....  44271

So it has come to this, has it??


__________________________________________________
"There's never enough time to do it right, but there's always time to do it over."

1988 K100RS SE VIN 01477554
    

33Back to top Go down   Idle speed....  Empty Re: Idle speed.... Thu Nov 15, 2012 11:56 pm

Rick G

Rick G
admin
admin
Well at least it'll put a spark in your life for those loooooong winter nights that are coming.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

34Back to top Go down   Idle speed....  Empty Re: Idle speed.... Fri Nov 16, 2012 9:06 pm

twincarb

twincarb
Life time member
Life time member
As I mentioned earlier I did the throttle body balancing this afternoon.... not to hard my old trusty gauges did the trick.... the only problem I had was I decided to use the exhaust extraction in the hanger... Silly me forgot it's designed for trucks really.... With it connected to the back of the exhaust and on switched on it sucked too much and I couldn't do the job.... Idle speed....  Imag0520


__________________________________________________
BMW K100LT 1988 Matt Black Peugeot Electra Blue (ELX) Colour is now confirmed...
Yamaha Thundercat
Triumph Spitfire (not a bike but hell it's British chaps)
Idle speed....  169042Idle speed....  169034
    

35Back to top Go down   Idle speed....  Empty Re: Idle speed.... Sat Nov 17, 2012 4:15 am

K75cster

K75cster
Life time member
Life time member
Now you should not post pics like this! what if the epa saw it and started thinking we all need a shed like that to ride along in all connected up to and all. tsk tsk because I cant find waging finger in the emoticon thingy, nice blue bike that pug blue


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

Sponsored content


    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum