No more OEM? No Problem!
Custom Ignition Solutions for Your Classic Bike!
My cutting-edge technology simplifies and speeds up your motorcycle tuning experience!
Just connect your phone to your beloved motorcycle, and you’re good to roll!
Imagine the ease of repair work with a programmable ignition that seamlessly adapts to a variety of bikes.
This is a game-changer for any motorcycle enthusiast, particularly when dealing with discontinued or overpriced original parts.
Making tuning a breeze and ensuring your engine performs at its best.
Programmable AC-CDI.
Features
- Wireless Programmable AC-CDI.
- Suitable for ONE or TWO* cylinders
- For [2 strokes engines] and for [4 strokes engines with wasted spark*]
- Easy programming via WiFi connection. (No cable)
- You need a simple web browser on any smartphone or laptop. (No app)
- Compatible Windows, Android, Mac, Linux (No special OS).
- Non volatile configuration.
- ONE or TWO programmable ignition timing curves. *
- Rev from 10 up to 30,000 RPM.
- 0 deg advance from 1 to 500 RPM. (To avoid kickback)
- Adjustable timing in 13 steps from 500 to 20,000RPM.
- Rev limiter.
- Live Display of RPM and Timing via Wifi.
- 1 input for an inductive pickup (VR).
- Support 2 Pickup polarities. (Positive or Negative first). New !
- 1 input for an Hall Effect Sensor, Optical sensors or Points (An external resistor is required) *
- VR conditioner to extract pickup signal in noisy environment.
- 1 output for a CAPACITIVE coil type from 0.3 to 1ohm.
- Stator can be half or full rectified. (For more power and ground isolation)
- 1 input for Kill switch.
- 1 input to select Timing N°1 or N°2 at startup *
- 1 output for 12v Tachometer signal. *
- Power supply voltage DC 6 to 18 volts (For Setup AND to operate).
- Current drain: 30mA – 100mA.
- Protected against reverse supply voltage.
- 300V 8A 12pins connector.
- Dimensions: 75 x 70 x 25mm (2.95 x 2.75 x 1inch) 150gr (5.3oz) Smaller !
- Strong Aluminum box New !
- Potted for Electrical insulation, Protecting components from mechanical shock and vibration, thermal shock or Moisture.
- 6 months Warranty + 1 year Firmware Updates New ! *
- Made in France.
* Options
Programmable ignitions NEED an external pickup to be able to change the advance timing.
The external pickup is the TIMING REFERENCE.
That is why SEM, MVT, PVL, SELLETRA stators with their so-called “internal timing” CANNOT work with this CDI.
Wiring
Pin 4 is the black mark
Half-Rectification and Common ground Full-Rectification and Isolated ground. (More power):
12 pins Connector
HowTo wire ACCDIv14 on XT550-600
HowTo wire Sidestand & Neutral switches on XT550/XT600/TT600
HowTo setup
To program the ignition, please Print and follow this procedure: Setup Ignition box.pdf
The 12pins connector has a marker trace on pin4 which is Ground.
1) Connect a Black wire from connector pin4 to the black plug of a 12v battery.
2) Wire a bridge between connector pins 4 and 6 (ground and kill input).
3) Connect a Red wire from +12v connector pin5 to the red plug of the battery to power up the ignition.
4) Led blinks 5 times while a WiFi Access Point named “Transmic_ign” show up on you laptop/smartphone.
(If a password is asked, use “password”)
Cylinders
* Twin-cylinders at 360° crankshaft angle:
The engine works with WASTED spark.
If there is ONE twin coil:
=> This AC-CDI works.
See: CDI compatibility
Pickup
Click here for more infoIt’s made of a coil of wire wrapped around a magnet.
When a ferrous part passes by the magnet, the magnetic field is modified and a voltage pulse is created in the coil generating a sine wave.
ACCDIv14 has:
– 1 input for inductive pickup (VR/pickup coil) with 1 signal per crank revolution. (Pickup must puts out 3 to 100Vac)
– 1 optional input for Digital sensor (Hall Effect Sensor, Optical sensors even Contact breaker).
– This CDI works with ONE pulse per rev (1 reluctor only like “A” or “B” below)
– This CDI DOES NOT work with multi-pulse pickup (ie 2 reluctors on flywheel: “C” or “D”).
– This CDI DOES NOT work with a missing tooth flywheel. (“G”)
Pickup Polarity
Click here for more infoWhen the bar/magnet on the stator passes in front of the pickup, the pickup generates two pulses of OPPOSITE polarity.
A pickup has 2 wires.
– If you ground wire number 1, wire number 2 will put out a Positive pulse first when the rising edge comes, then a Negative pulse when the falling edge leaves. I call it PN.
– If you ground wire number 2, wire number 1 will put out a Negative pulse first, then a Positive pulse. I call it NP.
This ignition box works best with Positive first pickup. (VR-PN)
If the polarity is Negative then Positive(NP) then the leads are backward, if possible, just swap the wires to change the pickup polarity !
Watchout! If the pickup is internally grounded and output ONLY one wire, you won’t be able to change the polarity, the pickup output is either PN or NP. You can still use this ignition.
Check the polarity of the pickup (Negative going then Positive/(NP) or the opposite PN: Positive going then Negative) with a Needle galvanometer (in milliAmp position) while kicking.
Pickup Position
Click here for more info“Pickup Position” is the number of degrees between the very first pickup pulse and TDC.
This ACCDI can use Pickup Position from 1 to 180° BTDC
To be able to provide the largest advance timing (Example 36° @ 4500rpm) the pickup MUST send a trigger signal BEFORE the piston reaches 36° before top dead center (BTDC).
The “Pickup Position” on the Yam XT600 is 50°. Many Yamahas have a “Pickup Position” of 72 degrees.
This “Pickup Position” depends on:
– Where the pickup is mechanically located with respect to TDC?
– Where is the flywheelâs bar located?
– How long is the flywheelâs bar?
“Pickup Position” AKA “Max Advance” = “Base Advance” + “Flywheel’s bar Length”
“Base Advance” value sometime appears in the User Manual.
Length of the flywheelâs bar can be measured this way.
You may measure the “Pickup Position” using a protractor.
or with a caliper and some math.
Pickup Voltage
Click here for more infoThe higher the RPM, the more voltage it must produce
Formula : Minimum Pickup voltage = RPM/1000 + 3
Example : At 6000rpm the VR pickup must put out : 6000/1000 = 6 + 3 = 9Vpp (Volts peak to peak)
Hall Effect Sensor, Points/Contact breaker
Click here for more infoOptional
– Points, reluctors, Hall sensors, optical sensors can also be used as long as they give only 1 pulse per revolution. They may need an additional pullup resistor.
– 3 wires digital Hall effect sensors need an external pull-up resistor. The default voltage output is equal to Vcc (+5v to 24v). When a magnet passes in front of the sensor, the output voltage goes low.
The ignition box will detect the LOW to HIGH transition, meaning the trigger moment will be when the magnet LEAVES the hall sensor.
Models : NJK-5002C, Hamlin 55100, Allegro A1101-A1104, Allegro old 3141-3144, Honeywell 1GT101DC, SS495, SS49E etc…
Pullup resistor: 1k to 10k ohm
Live Display of RPM vs Timing via Wifi
For diagnostic or tuning purpose, it’s possible to live view RPM and Timing in degrees BTDC on a remote PC connected through Wifi: Video
Because of the impact on CDI performance, please disable this function when you are done with it!
Ignition timing
Windows software: Interactive_Graph.exe
(Extract this software to where it has read/write permission, i.e. in your Document folder)
Tip: No need to use all 13 points if the curve is straightforward.
Just use the first 2 or 3 timing pairs ! The ignition box will process that faster.
– Example of Settings for Yamaha XT600 – 1986
Rev Limiter
The last RPM value that has been entered is the “rev limit” that stop all sparks.
Tachometer
Click here for more infoOptional
An output for connecting a digital Tachometer is available.
Output signal is a 0 to +12volts square signal:
Diagnose with LED.
Click here for more infoAs soon as a pickup signal is detected, led blinks in rhythm.
If the Maximum RPM is reached, the led turns off. If minimum RPM is reached, led turns off.
– If the box starts in SETUP Mode : Led blinks 3 times before flashing once every 5 seconds.
When data arrives via WIFI, led briefly flashes.
COIL
CDI ignitions need a CAPACITIVE coil type (AKA Transformer type) for CDI (Not a INDUCTIVE coil for TCI)
Ignition coils are different from TCI to CDI systems.
A CDI ignition can work with a TCI coil but the spark energy will be halved ! Why CDI coils donât work with TCI ignitions?
– CDI coils have low inductance (L=0.1 to 0.7mH) and primary resistance of around 0.3 to 0.8ohm
– TCI coils have higher inductance (L=4 to 15mH) and primary resistance of around 1 to 5ohm
CDI coils: IMFsoft, Ignitech, FireCore, FuelTech, PW, M&W, Suzuki coil, Kawazaki coil,
PHOTOS.
Transmic CDI vs Honda CDI ? Dyno speak volume:
Honda NSR125 with Malossi 180cc, Tyga exhaust, Italkit reeds tuned by “Cuco Racing Team – Spain”
VIDEOS
Yamaha TT600S without battery v12:
Yamaha TT600S with battery v12:
Yamaha XT200 with CDI v10:
Yamaha XT600 with CDI v11:
Yamaha XT125 with CDI v11:
Yamaha TTR600 with CDI v11:
Sanglas converted from points to CDI v11:
Honda MBX 125 onboard with programmable CDI v10:
Translation of the video above
Various parameters must be memorized beforehand
I recommend to roughly determine the position of the sensor with a graduated disc
The stator must be labeled for a pre-adjustment with 10,20,30° marks
First try with a car battery
The positive pulse from the pickup must come first, otherwise swap the cables, otherwise the timing will be clearly wrong
So not this way !
The engine runs under 6v under its own power supply
5 degrees offset
Offset corrected
Will it go with the Vape too?
Safe settings: pickup position:70/pickup type:0/adv 0-500:0/5@1000/5@2000/10@3000/20@4000/30@6000
VERSIONS
Click here for more info- Version v14r0c0:
- Evolution of V12.
- [soft] New menu. User can select strokes and cylinders.
- [soft] 2 timing curves available.
- [hard] 1 switch to select timing curve.
great job congratulations! I wanted to ask you, in your opinion is it possible that it works on a vespa 50 (pk 50 s) with electronic ignition? In this case I’m talking about the original Ducati 4-pole ignition with pick-up on the stator. In case I can send you some photos or you can find them on the internet! Thanks and Merry Christmas!
Thanks!
Is it this one ?
If it has one external pickup, only one bar on the flywheel and a +12v battery: Yes it works.
You just have to be sure that the pickup puts out a positive pulse first otherwise you’ll have to invert the 2 wires that go the pkp.
(Read Pickup polarity section in this page)
Regards
Hello! I only saw the message now! Then the stator (4 poles) has the internal pickup and the external HV coil. is the model without battery!
https://www.vesparesources.com/uploads/monthly_2017_10/59e8913d20b4a_Schermata2017-10-19alle13_48_50.png.cb30d83fcfca90e9a2d12b8bc12423e4.png
Thanks for the Answer! I want the V11 so bad but from the text I took it that it sadly wonât work with 2 pick-ups, right?
After reading the text more thoroughly, I think that two pickups should work, but Iâm not sure where I can connect the second one, just to the same port as the first? (That canât be right, can it? )
Or do I not need two pickups at all with the programmable ignition curve and one is enough? (sorry for the spam)
You took it right. ACCDIv11 DID NOT used 2 pickups.
In fact it didnât need the LOW pickup that sends a pulse at 12°btdc
The cdi uses the HIGH rpm pickup at 36° to make 12° from it.
Iâm currently testing a new version of ACCDIv11r5c1 with added features (See https://transmic.fr/2021/08/14/ac-cdi-v11/#versions )
This version now uses the two pickups on XT550-600 but I havenât got the time to write the documentation…
Thank you so much!
I think I’m slowly getting there.
now I ask myself only the question with the wiring. I have the circuit diagram from am motorcycle, sind from the pickups come 3 cables: 12°, 36° and the pickup ground. Is said ground important or is it simply ignored?
and what exactly is the HV cable in your wiring scheme? a brown and a red cable come out of my alternator, where do i connect them? đ
Oh i see now your updatet wiring, thanks! going to purchase đ
I have purchased this excellent product for older 4-stroke motorcycles, programmable curve between 0 degrees and 38 degrees. Thank you for your help and knowledge on these products.
Ciao Thierry, do you have any experience using your CDI on a points Piaggio Ciao / Bravo ?
Hi,
No. But there is not improvement in performance to expect on a 50cc…
ahahah…you are right but i m interested more in reliability than in performance !
Hello,
Looking for a cdi for Artic Cat spirit 500 2cyl 2 stroke. Have your accdi 2.7+ and have had the motor running but not well. nipponddenso 070000-0680 is factory unit cdi. Can you help out..
I think that the most reliable assembly is a TCI with a Hall sensor so there is no use of the alternator neither the pickup coil, but it needs a battery and it’s a big mod !
Hello,
You mean the Artic Cat snowmobile with the “Spirit” engine from Suzuki?
It seems to be a 360° parallel twin (both pistons up and down simultanously)
Beside it runs with the ACCDIv27+ so I bet there is only ONE pickup and a twin ignition coil to fire both cyl. at the same time.
Sure the ACCDIv27 is a crude ignition created as an affordable solution.
If you want to fine tune the advance timing, the ACCDIv11 is better (or a TCIv11 but the ignition coil MUST be replaced)
To set the v11 you MUST know the pickup position BTDC, donât ask me đ
I described same ways to do it on both web pages.
Th
bonjour Thierry,
je suis motivé pour prendre la v11 pour ma xt 600 3TBK.
Petite question suite Ă la lecture de tes commentaires et quelques recherches :
la version ACCDIv11r5c1 permettrait d’utiliser les 2 capteurs (12° et 36°) si je vous comprends bien.
par contre il y’a une mofif Hardware dans la ACCDIv11r5c1 pour une deuxiĂšme entre analogique pour le capteur 12° donc.
La version actuellement en vente serait compatible ou dois-je attendre encore ?
Encore merci pour ton travail
Bonjour et merci pour votre commande.
La version a ce jour est ACCDIv11r6c1 donc elle integre de r5c1 une entrée pour le pickup low a 12° dans le cas des XT600.
merci pour votre réponse.
Colis réceptionné ce jour, merci !!
DĂ©jĂ connectĂ© dessus j’ai un petit doute quand Ă la valeur du PICKUP
(oui mon anglais est …. fatiguĂ©.. et malgrĂ© google traduction je ne suis pas sur de comprendre)
en fait ces deux phrases me mette le doute :
“The âPickup Positionâ on the Yam XT600 is 50°”
“The cdi uses the HIGH rpm pickup at 36°”
pourquoi 50° , on a un capteur 12° et un autre 36°
pouvez-vous svp me confirmer pour un 600XT:
PICKUP TYPE : 0 (vr analog)
PICKUP POSITION : 36 (BTDC)
aussi dans la documentation il n’y pas d’indication concernant SHAFT: Crankshaft ou CamShaft
je suppose que c’est pour ceux qui on le capteur sur le haut moteur ?
je laisse donc Crankshaft pour mon utilisation.
Encore merci,
hĂąte de tester sur la moto !!
Le pickup de la Yamaha XT600 est physiquement placé à 50°.
Le CDI attend un peu puis envoi l’Ă©tincelle Ă 36° BTDC.
Les pickups sont TOUJOURS positionnĂ©s a une valeur SUPĂRIEURE Ă la valeur d’avance maximale.
(pour obtenir 36° d’avance max, les ingĂ©nieurs Yam auraient pu placer mĂ©caniquement le capteur a 37, 50, 70, 93° btdc etc, le CDI se dĂ©brouille mais il faut le lui dire.)
PICKUP TYPE : 0 (vr analog)
PICKUP POSITION : 50 (BTDC)
>je suppose que câest pour ceux qui on le capteur sur le haut moteur ?
>je laisse donc Crankshaft pour mon utilisation.
Evidemment.
Merci pour votre réponse plus que complÚte !
Demain ça dĂ©marre du coup, j’ai hĂąte !
Bonjour ,
Je viens donner nouvelles,
j’ai enfin eu le temps de monter le CDI sur ma moto.
Malheureusement aprĂšs de bonnes heures de recherche je sĂšche -> pas d’Ă©tincelles.
1) j’ai mesurĂ© Ă l’oscilloscope je pense l’essentiel des composants (je peux faire des captures si besoin ?)
– vĂ©rif de la tension HT du stator : OK (sinus de -150v Ă +150v environ)
– vĂ©rif du capteur PICKUP : OK (premier pic positif d’environ 7v suivi du nĂ©gatif Ă -7v)
2) j’ai enlever le faisceau elec de la moto et fait un faisceau sur mesure pour uniquement cabler le CDI tel que sur le schema “full rectification” (avec un inter pour le “kill switch” pour accĂ©der au paramĂ©trage facilement)
– je n’ai pas essayĂ© en Half-rectification par contre.. mais je ne verrais pas pourquoi ce serait mieux
3) batterie neuve chargĂ© ou alimentation de labo pour le 12v (avec test de masse diffĂ©rentes pour ĂȘtre sur , cadre, moteur, sur le rĂ©gul, etc..)
4) bougie neuve, bobine neuve, antiparasite neuf (mĂȘme si Ă l’ohmĂštre tout Ă©tait bon mais j’avais ça en stock donc autant essayer)
-> les symptĂŽme sont :
– sur la broche 1 (sortie CDI pour bobine) il n’y a rien : mesurĂ© Ă l’oscillo. (bobine branchĂ©e ou non branchĂ©e)
– la led du boitier clignote si je fais tourner le dĂ©marreur ou un coup de kick (je suppose donc qu’il capte bien le PICKUP)
– j’ai mis une courbe d’avance simple Ă 3 points (500-8 ; 1000-10 ; 6000-30 ) , si je fais “READ” c’est bien Ă©crit comme dans la doc.
VoilĂ , je vous avoue que je sĂšche . ça fait beaucoup Ă lire mais je tenais Ă essayer d’ĂȘtre le plus prĂ©cis possible. Avez-vous une idĂ©e ou une piste ? je peux bien Ă©videmment mesurer ou fournir d’autre informations si nĂ©cessaires
En vous remerciant par avance,
Robin
>la led du boitier clignote si je fais tourner le démarreur
Donc le CDI voit bien le pickup
>sur la broche 1 (sortie CDI pour bobine) il n’y a rien
C’est qu’il manque la Haute Tension
Essayez en Half rectification. J’ai vu des cas ou ca ne marchait pas en full. Surement a cause de masse non communes…
Th
Si besoin joignez moi directement par PM (mon adresse est en haut a dr. “Contact Me”)
AprÚs des heures de recherches le résultat est tombé : STATOR HS .
Encore merci pour les nombreux conseils et pour l’aide apportĂ©.
A bientĂŽt j’espĂšre et bonne continuation !
do you plan on adding TPS support and therefore ignition mapping with rpm and throttle position to those devices?
No. One day perhaps but surely not yet.
To make a universal TPS input, you must deal with 2, 3 or 5 wires sensors. Sensors that go forward or backward, sensors that provide voltage, different min and max voltage or provide ohm resistance value… etc etc
And of course a real time 3D mapping. If you need more look at Megasquirt.
Compare Honda CDI WITH TPS vs Transmic CDI WITHOUT TPS:
https://transmic.fr/wp-content/uploads/2023/02/ACCDIv11_Dyno_Honda_NSR125.jpg
Good morning,
I wanted to check the “pickup position” angle (50 degrees on my yamaha XT600) with the stromboscopic lamp.
I set a fixed curve from 500 rpm to 6000 rpm: fixed advance 12 degrees. (and I increased the idle to 2500rpm)
I can’t get a fix point on the flywheel. it moves a lot so very difficult to adjust the value of “picikup position”.
I see the “TDC” mark through the hole with the strombo lamp so I already have almost 12 degrees not good
So my question are: What I’m doing wrong or what’s the precision of this CDI ?
(I can’t film, problem with frame rate and oil vapor projection, but I’m motivated for other tests)
Thanks in advance