During a recent run up and mag check we discovered one ignition module was bad. This 912ULS has the older 6 and 4 pin connectors and a single replacement module can set a guy back nearly a $1000.
A forum member pointed me in direction of a Barnstormers add for replacement aftermarket modules and which can be found at https://www.barnstormers.com/classified-1604831-Rotax-CDI...
These come with longer wires to get the module away from the heat and vibration of the stock location on top of the engine and as a extra bonus a built in soft start. After mounting the ignition on the fire wall the first start was immediate and smooth and we picked up about 200 rpms in climb out.
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Agreed!
After discovering one of my original (1993) CDI ignition modules was bad, I replaced them both with this unit. Mounted them on the firewall away from the engine and heat with hd industrial self-stick Velcro. They were easy to install.
Very pleased with the performance.
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Here is the email I received from Allistair:
Brett,
The aftermarket CDI units that I sell for the 80/100hp engines are pretty much plug and play. They come with an inbuilt soft start (not so critical on the 80 hp engine) and a quick spark feature and have proven extremely reliable.
The quick spark feature requires a 12Volt DC input, but this is straight forward to hook up. You only need to supply a 3-amp fuse to each input line to the unit and you are all set.
They come with a 39-inch cable which allows the units to be mounted on the firewall or airframe well away from the heat and vibration above the coils, which is the main reason the Rotax units fail in the first place.
Mounting is via Velcro, cable ties or your own metal bracket. These units don't have mounting screw holes like the original OEM ones.
You should also check the condition of your rubber isolators under the coils on your engine, if these are cracked and damaged, they will allow more vibration into the coils. As the coils cannot be moved easily. It is best to replace these isolators. If required, I have a kit available for this purpose for $50 which is less than the $104 Rotax requires for the isolator replacement.
I provide a wiring diagram and installation instructions and as long as you adhere to the installation instructions and send me pictures of your installation, I will personally warranty these units for 100 hours or 6 months, whichever comes soonest, and I will replace any defective unit.
I am pretty confident that that I won't have to send you a replacement, as I have been selling these units for the past 2 years and have not had to replace a single unit.
My customers have been very happy with the units and report quicker starting and smooth running of their engines.
I rarely hear from my customers after they install these CDI's, some customers call to say they are very happy with the result, and a few have questions about where to place the units on the firewall, other than that the units are tested before they leave the factory, and I have not had to replace a single unit so far. A few customers have bought more units for different engines and aircraft that they own, and some have recommended their friends to me when they have had trouble with their Rotax ignition units.
They cost $265 each with an additional $20 for Shipping. $265 for one and $510 for two.
I don't do credit cards or PayPal, so you have to send me a Check or if you need them right away, I accept funds via Walmart Money Transfer, which is a quick and secure method of transferring funds.
I send out installation instructions and the units via priority mail and send you the tracking number when they are on their way.
My details are:
Allistair Wilson
1081 N State Road 157
Bloomfield, IN
47424
812 384 4760 (home/office)
765 602 0136 (ceel0
I'm always available to assist if you have any questions and need any additional support during installation.
Many thanks
Allistair
912 aftermarket ignition modules
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Originally Posted by ScottS97385
