Triumphrat

mag10 · 03-21-2010, 11:50 AM

my Inovate LM2 kit arrived (a month after ordering it). I got the port welded on and the power plug setup. I want to hook up the tach function, I see which lead on the LM2 input to use (blk/white stripe) my questions is where is the best / most convenient place to pick up the tach signal? can I use the lead to the bikes tack?

B02S4 · 03-21-2010, 07:49 PM

I have a kit on order from Jegs, who did you order yours from?

twinfan · 03-21-2010, 08:46 PM

hi mag

i have lm-2 here, too...i heard of lots people having problems getting a signal from the rpm input...

so i first did some tests at home with a frequencegenerator...the rev counter gets frequencies from 0 to round about 140hz...it´s just the frequence that changes...

whereas 140hz is for a pieman igniter with 8500rpm

you need a voltage of 13.6V rectangle...

http://img125.imageshack.us/img125/8189/osz3fn3.jpg (red channel is the rev signal...in this case 25,4hz @ 1520rpm)

pluging the lm-2 via usb cable to your pc and connect it to the software will show you the revs on the software gauge...

now you know if it works or not...so it must work on the bike, too...in the manual you can read that they recommend using a 100k potentiometer, when you have problems with getting a signal

try to keep as much distance as possible to the high voltage zone (coils, plugs) to prevent interferences/disturbances

as i even want to log my tps signal and don´t want to split the analog cable...i use some safety pins...i stick them through the gaskets of the cables and put them in directly at the igniter

http://img501.imageshack.us/img501/8053/zbox1ee2.jpg

15 (red) is rev
17 (green/yellow) is tps

cheers

twinfan

mag10 · 03-22-2010, 10:21 AM

Quote:

Originally Posted by B02S4

I have a kit on order from Jegs, who did you order yours from?

Fuel Systems - they have a turbo/supercharger shop near me. some cool stuff in there for drag cars.

mag10 · 03-22-2010, 10:29 AM

thanks twinfan - your right it does work on the PC every time. on the bike not so much. I am going to try the connect under the tank nacelle to see what that does.