G'day

There used to be a couple of blokes at my club that tried to go fast. They were flying Skyraider Mach 2 planes with OS AX 46 engines. They tried different props, more nitro, lean tuning and all they achieved was to make a lot of noise and to ruin some motors. The flutter from their over speeding airframes was memorable. But they did not go really fast.

So I decided to show them a real engine and I bought a Jett SJ 46. I did not have a Skyraider but I did have two identical GP big Sticks. I put the Jett in one and an Enya 45SS in the other.

The original Stick with the Enya was good to fly but a little slower than their Skyraiders but the one with the Jett 46 was very much faster.

I did measure the Jett's revs. When it was running in on a 9 x 7 (as recommended) on 10% fuel, it was turning 18,900 and this was tuned rich. On a 10 x 6 it was turning 16,500 also rich.

I don't know what the other engines were turning but it was probably in the 12 - 13,000 range on 10 x 6 props.

If you want to go fast. Buy a Jett.

Mike in Oz