Good to hear you like it. If I go with a new magneto I'm already going to spend $850 plus tax, and shipping both ways to just replace a magneto. For $3,500 ($2,900 at aircraft spruce + $600 for tax, paperwork, & install costs) I can put in a better system. The $1,000 is going to get spent one way or the other. So for $2,500 extra I get a better set up. In theory,
.85 GPH savings (10%)
$5.90 per gallon
$5.02 per hour
$1,000 New Slick (Including tax, & shipping for new mag & core)
$400 Slick (500) hour inspection (Including shipping)
$400 Slick (500) hour inspection (Including shipping)
$400 Slick (500) hour inspection (Including shipping)
$2,200 over 2000 hours
$1.10 per hour for Slick Magneto, assuming a magneto can make 2,000 hours being overhauled every 500 hours. I have no data on this.
$10,400 fuel savings over TBO (2,000 hours * $5.02 per hour fuel savings)
$ 2,200 what I would have spent on a Slick Magneto over 2,000 hours
$12,600 in avoided cost over 2,000 hours
$ 6,900 Stay with me on this one. Today's value is $3,500 cost to install Electroair, but the future value of that is higher. I used a 10 year period to get to 2,000 hours. I cut the return down to 4% from 8% to compensate for the fact that the fuel avoidance will go up in value with inflation giving the fuel more value. Yes, I know I should have done two calcualtions, one for fuel value going up and one for the $3,500 going up. Heck, there should be a third calc for the Slick Magnetos. That leaves roughly:
$12,600 - $6,900 = $5,700 savings over 2,000 hours in today's dollars. I think.
Anyway, that gives you $2.75 per hour savings.
$3,500/$2.75 = 1,273 hours to break even on a 10 year schedule.
No wonder the flight schools are all over this. The faster you burn through the 2,000 hours the less the time value of money goes against you. Embry Riddle put 5,000 hours on my plane in five years. They blew through 2,000 hours before the time value of money would have caught up with them. For them it would be more like $4.50 plus in savings per hour, and that assumes that they completely replace their Electroair system every 2,000 hours.
If you only put 50 hours a year on your plane you will not break even.
You WILL gain the other benefits of the system: smoother operation, longer range on a given load of fuel, less down time while getting your magnetos rebuilt.
Interesting.
Jim