SnowDog
Moderator
The GT15 is a pumped glow type engine. I have not run mine yet.
The GT22 is quiet, but has the on/off throttle response the DLE-20 has. Also heavy.
The GT33 is amazing. The did something to get the throttle to be very linear, only about 91 db at 20 feet, and puts out decent power. We get about the same numbers with a DLE-35RA and the GT33 with the same props.
The GT60 was a disappointment last season. It was reasonably quiet, but I never got the RPM numbers that I was expecting. Turns out I had some damage to the cylinder wall. The motor has been completely rebuilt (70% new parts) and I am hoping for a new start with that motor on the new scheme Redwing slick I have had on back order for a bit too long.
The #1 issue people have the OS motors is that timing is set pretty low and they WILL START BACKWARDS hand flipping. I use my Kavan starter most of the time. For the GT60 we have replaced the ignition with a aftermarket one with different timing. If this works then everyone should be able to solve the starting issue with a $50 part.
Matt, please follow up and let us know about the after-market ignition...I love my GT33 but it starts backwards almost every time and it is frustrating.
I know that @WrongWayRc sells Rcexl ignitions...is this the after-market ignition you are talking about?