Koso Digital Speedometer
- Thread starter skuter
- Start date
express unlimited
Super Veteran
same problem on signal lights but fixed upon installation by sir einver. gps setting was set at 100 percent. quite accurate, gauged on a raider r150. connected the rpm on orange wire. better reading than in the white wire. I think the orange wire is same on the wire connected on the coil since they have same color. dunno if the same on other bikes. regarding the temp sensor, .....SECRET! hehehehaen said:
in the CDI connector theres 2 almost confusing colorshaen said:
-WHITE
-WHITE YELLOW
the first time i open the wire covers i thought its white
but when i take a closer look and inspect, it has a very little
yellow line almost removed.
try to double check.. it might be white yellow that you tried..
so far in me, i spliced the WHITE, soldered the rpm wiresensor to
it and got no rpm problem whatsoever.
anyway if orange works, thats fine.
the white wire might be a little more accurate as its direct from stator pulser.
for gps:
90/80 = 90mm x 0.8= 72mm height
80/90 = 80mm x 0.9 = 72mm height
whats your front mags width you are using bro?
i have 2.15 front mags width, that might be the reason
of the difference of our circum settings.
the stock front mags 1.6 with 70/90 have 9% advanced to gps speed.
see this video http://www.youtube.com/watch?v=-4LeXpQoA6s
wider mags and narrow mags will make the circumference differs a bit.
for signal turn, yahh exchange the brown wire and green wire.
i have A/F sensor here from my other gadget it might work
with kosometer im not sure yet if kosos af is narrow band or wideband
okay, i dunno what happens, but seems this rpm reading problem can be found on other speedo as well like RX series.. regarding the 'snow white' cabletraxxas-modifier said:
... i even parallel it directly to the stator pulser socket near the starter motor to see whether i made a mistake.. and the result is still the same.. while my previous tachometer works fine with the pulser cable.. if you got it working well with the snow white cable i'm glad u did.. and apparenly the turn signal problem is there too..
about tire circumference i still use the stock cast wheel mags..
i think what matters most is not the width.. but the tire circumference.. while mine after doing the tire roll using manual meter landed on 180 cm compared to 175 cm stock 70/90-17 circumference.. so 180/175 = 103%
also regarding A/F meter.. the dyno operator said it could interrupt the exhaust flow if installed permanently.. also it got limited lifetime.. 200 hours if i'm correct ? costs about USD 80 per pc for the wideband.. maybe we can use bosch AFR wideband sensor from car ?
the meter is 85% perfect.. if these things corrected we'll have a champion product !!!... especially the included water/oil temp sensor plug size..
sniper135lc
Super Veteran
orange wire is much accurate rather than the white wire cable.traxxas-modifier said:
orange wire was directly came from ignition coil through stator.
while the white one was came out inside the cdi circuit unit it has filtering components causing of waste of voltage having a erratic reading of rpm.
now what i am thinking is it safe for the koso meter to directly supply by a stator unit through ignition coil which has a good and accurate reading of rpm?
some problems encountered during instalation of koso meter.
1. reverse turn signal light koso meter vs the bike stock set-up.
corrective action: just swap the wire from the koso meter(not the stock wiring of the bike) brown and green on koso meter wire just swap it.
2. the rpm reading was not accurate it has an erratic behavior just like when the bike was 1st started. stabilizing after a 6 kilometer run.
corrective action: this is just my self corrective action for the inaccurate reading of the rpm of the koso meter do it at your own risk. just remove the connection from the white wire of the cdi unit to the orange one then you have an accurate reading even if you have a cold start.
3. tire circumference i use just like what haen done on the tire circumference just like in the manual of koso meter. 180 cm 90/80 17 compared to 175 cm stock 70/90-17 circumference.. so 180/175 = 103%
4. temp. sensor.
corrective action: instead of using the supplied parts sensor just use a thermocouple wire and dip it inside of the radiator. this wire is very common here in my work it is too tiny that you can insert it anywhere on passage hose of the radiator and i have a reading of the water temp of the radiator. note radiator fan will run at 85 Celsius temp.
just post all your query here and will just find the answer. just sharing my experience.
BHER
Super Veteran
EinVer
Super Veteran
here's my thought regarding the white and orange wire on the CDI
the WHITE wire comes from the stator (pulser to be exact) and gives out around 5 to 30 volts AC signals from the pulser to the CDI
the ORANGE wire comes from the CDI and gives out 200+ volts DC to the ignition coil
now the wire from the Koso meter that we attach the CDI's wire is actually a sensor.
it senses positive signals from the wire that we attach it to.
i think the Koso meter gives inaccurate reading at 2000 rpm and below on the WHITE wire because at low rpm, the stator (pulser) gives out weak AC signals to the CDI.
on the other hand, the ORANGE wire from the CDI to the Ignition Coil gives out a minimum of 200 volts DC which would not be too hard to sense by the Koso meter.
there are still some other factor that might affect the accuracy of the RPM reading of the Koso meter, like for one, id say using the white wire would give a bit better accuracy on higher rpm than the orange wire.
but im not going to explain why... well at least not now.
electronics... i love to hate it
the WHITE wire comes from the stator (pulser to be exact) and gives out around 5 to 30 volts AC signals from the pulser to the CDI
the ORANGE wire comes from the CDI and gives out 200+ volts DC to the ignition coil
now the wire from the Koso meter that we attach the CDI's wire is actually a sensor.
it senses positive signals from the wire that we attach it to.
i think the Koso meter gives inaccurate reading at 2000 rpm and below on the WHITE wire because at low rpm, the stator (pulser) gives out weak AC signals to the CDI.
on the other hand, the ORANGE wire from the CDI to the Ignition Coil gives out a minimum of 200 volts DC which would not be too hard to sense by the Koso meter.
there are still some other factor that might affect the accuracy of the RPM reading of the Koso meter, like for one, id say using the white wire would give a bit better accuracy on higher rpm than the orange wire.
but im not going to explain why... well at least not now.
electronics... i love to hate it
inspire
New Member
For Oil TempVoldedore said:Hi, can you help me about the temp sensor ?
Where can i connect it to my bike? T135 too.
It's a PT 1/8 temp sensor, it say "installed in the oil release hole"
I dont know where is that hole( If you can, show me some pic.
Really thanks !
http://www.facebook.com/photo.php?pid=1 ... 1110557728
For Water Temp
http://www.facebook.com/photo.php?pid=1 ... 1110557728
