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 Post subject: tach/dwell meter
Post Number:#1  PostPosted: Fri May 28, 2010 2:41 pm
  

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where is a good point to hook up hand held tach meter to bike without tearing half of it down. thanks- 1981 1100 interstate

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 Post subject: Re: tach/dwell meter
Post Number:#2  PostPosted: Fri May 28, 2010 5:34 pm
  

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idont have a clue on this with 1100s but somebody might .... are you having problems .....

welcome to the forum ....theres lots of info and 1100 owners here......

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 Post subject: Re: tach/dwell meter
Post Number:#3  PostPosted: Fri May 28, 2010 7:29 pm
  

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The '81 has electronic ignition, and getting to the coils might be a pain, considering where they are. What exactly are you trying to do, anyway? There are inductive style tachs that will simply have a clamp that goes around the plug wire...
Welcome to the CGW forums, btw! :clapping: :clapping: :clapping:

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 Post subject: Re: tach/dwell meter
Post Number:#4  PostPosted: Fri May 28, 2010 7:42 pm
  

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Welcome to the site :salute: Im sure somebody will have an answer for you soon

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 Post subject: Re: tach/dwell meter
Post Number:#5  PostPosted: Sat May 29, 2010 4:59 am
  

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To connect the tach/dwell meter to mine, I had to pull the false tank, and connect it to the top of one of the coils. Of course you have to connect the meter's ground cable to a good grounding point.

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Tumunga
1989 GL1500 (bought 5/2014)
1980 GL1100 Interstate (Sold it...oh man! 9/2010)
2003 Victory Classic Cruiser (Gone 3/2013)
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 Post subject: Re: tach/dwell meter
Post Number:#6  PostPosted: Mon May 31, 2010 7:56 am
  

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my meter is not inductive-it has alligator clamps-checked with some forums that suggested connecting to 3 wires coming off coil- im trying to re adjust my pilot idle screws on the carbs after rebuild-bike tach not accurate enough for fine tuning-bought hand held unit and then found out how hard it will be to connect. tried setting carb 1-1/4 out, sync'ed-bike road tested bad. turned out 2 turns- bike ran better but still not crisp on throttle starting off, seems to have small hesitation-decided to reset with tach and re sync to see if that would help. seemed easy enough in book. thanks

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 Post subject: Re: tach/dwell meter
Post Number:#7  PostPosted: Mon May 31, 2010 8:06 am
  

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try mixing some atf in the gas as this will make the gas more like the gas it was design for while your doing this....sounds crazy but its not ....thats what i did and seem to work realy well on getting a true reading on adjustments....

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 Post subject: Re: tach/dwell meter
Post Number:#8  PostPosted: Mon May 31, 2010 9:08 am
  

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joedrum wrote:
try mixing some atf in the gas as this will make the gas more like the gas it was design for while your doing this....sounds crazy but its not ....thats what i did and seem to work realy well on getting a true reading on adjustments....


You keep bringing this up. I don't know enough to argue and I haven't tried it, so please don't take this the wrong way. I'm just trying to understand the science of it. How does burning oil make it run more the way it was designed for? By somehow lowering the flash point - simulating a higher octane? Just trying to understand. Thanks.

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 Post subject: Re: tach/dwell meter
Post Number:#9  PostPosted: Mon May 31, 2010 9:22 am
  

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scdmarx wrote:
joedrum wrote:
try mixing some atf in the gas as this will make the gas more like the gas it was design for while your doing this....sounds crazy but its not ....thats what i did and seem to work realy well on getting a true reading on adjustments....


You keep bringing this up. I don't know enough to argue and I haven't tried it, so please don't take this the wrong way. I'm just trying to understand the science of it. How does burning oil make it run more the way it was designed for? By somehow lowering the flash point - simulating a higher octane? Just trying to understand. Thanks.


the refinerys keep stripping more and more of the heavy oils out of the gas over yrs more and more all the time the gas is just crap compared to the gas availible when theses bikes were made and design for

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 Post subject: Re: tach/dwell meter
Post Number:#10  PostPosted: Mon May 31, 2010 11:55 am
  

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connected hand held tach to neg. side of coil according to meters instructions-red to neg. coil black to battery groung-still no tach reading-guess i will try other connectors see what happens. shop books pretty much useless

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 Post subject: Re: tach/dwell meter
Post Number:#11  PostPosted: Mon May 31, 2010 4:52 pm
  

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Try connecting the ground(black) to the engine casing, or frame...might be a grounding issue with the tach/meter. Also, check and see if it will work connected to another coil.

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 Post subject: Re: tach/dwell meter
Post Number:#12  PostPosted: Mon May 31, 2010 4:59 pm
  

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tlcdmc wrote:
connected hand held tach to neg. side of coil according to meters instructions-red to neg. coil black to battery groung-still no tach reading-guess i will try other connectors see what happens. shop books pretty much useless


If you are sure you had a good connection, you may have to set your tach to 4 cylinders, or with 2 coils, maybe 2 cylinders. Not all of them will do 2 cylinders. Don't know what you have, but some meters need to be connected to battery power, besides the rpm connections. If what you have is a multi-meter you might look into that. You can also try your meter on another motor to check if it works or not.

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 Post subject: Re: tach/dwell meter
Post Number:#13  PostPosted: Tue Jun 01, 2010 4:40 am
  

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im assuming the carbs have been benched sync where all the play has been adjusted out of the linkage .....if so id just run it with atf mix and the air mix screws adjusted to what ever setting the book says to strart at and ride a tank of gas through it....this may change the way it runs from your pervious tests....the timing cant be off its not adjustable....i think the the advance has a vacume line that has to be hooked up..... my bike is a 1000 and im not sure i remember right about what others have said on this with there 1100s.....

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 Post subject: Re: tach/dwell meter
Post Number:#14  PostPosted: Tue Jun 01, 2010 5:52 am
  

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scdmarx wrote:
tlcdmc wrote:
connected hand held tach to neg. side of coil according to meters instructions-red to neg. coil black to battery groung-still no tach reading-guess i will try other connectors see what happens. shop books pretty much useless


If you are sure you had a good connection, you may have to set your tach to 4 cylinders, or with 2 coils, maybe 2 cylinders. Not all of them will do 2 cylinders. Don't know what you have, but some meters need to be connected to battery power, besides the rpm connections. If what you have is a multi-meter you might look into that. You can also try your meter on another motor to check if it works or not.


From the last time I hooked mine up, it seemed I had to divide by 2 the reading on the meter. I would guess the benefit of having to do that is the meter swings will be twice as sensitive. I bet the reason the meters do this is because both coils are firing at the same time, with each plug firing twice per cycle instead of the customary once per cycle.

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Tumunga
1989 GL1500 (bought 5/2014)
1980 GL1100 Interstate (Sold it...oh man! 9/2010)
2003 Victory Classic Cruiser (Gone 3/2013)
1983 Suzuki GS850L 3/28/09 for the boy to ride


 

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 Post subject: Re: tach/dwell meter
Post Number:#15  PostPosted: Tue Jun 01, 2010 10:24 am
  

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If you have one available to you, try using a photo tach, install the reflective tape on the crankshaft pulley, hope this helps.

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