Bonsoir à tous, je viens de voir ça sur le site fj1200.info
Like Randy said, you're not going to get a hotter spark with new coils, but anyway you CAN improve your ignition system: using a relay to feed system voltage to the coils directly (using a fatter wire), avoiding voltage drops elsewhere in the system.
The power to the coils runs thru the main (key) switch, and a bunch of connectors. Each connection/switch will have some resistance and an associated voltage drop across this resistance. These voltage drops add up and, in consequence, the device being fed this power gets less than battery voltage..... The relays eliminate th[Vous devez être inscrit et connecté pour voir cette image]e resistive connections and each device fed thusly will get nearly-full battery voltage. Using a tester I checked that the coils were feed by only 10 v. With a relay I've gained 2 v. More voltage in means more voltage out from the coils: better and hotter sparks.
I fitted the relay in the battery box, and the fuse at the front of the battery to have good access. (Watch the pic)
The fatter wire from the battery goes to the front of the bike and under the fuel tank, where the coils live. I've done all connexions with travelling in mind: like every year I ride a lot of kilometres for Europe, in case of a relay breakdown I simply disconnect the relay wires on the OE connexions and re-connect the OE clamps.
The connexions are as follow (my bike is an European 3CV)
To earth: from relay nº 85 connection to a chassis point
To battery: from relay nº 30 connection to the positive
Red fatter wire from relay nº 87 connection to the coils
Coils connexions
White female clamp: - Red/white wire: insulated White male clamp: - Red/white wire: red fatter wire from the relay from battery 87
- Grey wire: connected by a grey wire with the white male clamp grey wire - Grey wire: connected by a grey wire with the white female clamp grey wire
Yellow female clamp: - Red/white wire: to the relay, to activate 86 Yellow male clamp:- Red/white wire: red fatter wire from the relay from battery orange wire
- Orange: connected by a green wire with the yellow male clamp orange wire - Orange: connected by a green wire with the yellow female clamp
Today I´ve tested the new relay mod and, like Pat told me, new float bowls fuel level, 23 mm, from the previous 21 that I found them
I´ve chosen the worst possible scenery: hot day temperature, curvy, tight, slow known road that go from level sea altitude to 2.000 m. high in 40 kms where I drive very hard form 2 - 6.000 rpm all the time in 2nd/3rd gear (more is impossible: you go to the ditch... and the ditch is at the bottom of a 500 m cliff. Scary! )
The bike accelerate with fierce power, I´ve near eliminated the backfires... but I´ve got HOT. Even with cold sparks and with big oil cooler, the oil went to 120ºC in 30 kms, when last week, with similar temperature, didn't pass from 105ºC in the 40 kms
So I revised the float bowls level one more time, leaving them in 22 mm. little backfires have appeared again, but less than the OE settings, and the temperature have come back to the normality
Sujet: "Nology effect" à peu cher 
Mar 20 Sep 2016 - 1:07
