Turbine-powered chainsaw - video

**sossol** · Jan 10, 2019, 05:49 PM

Originally Posted by Frank S

A right angle bevel gear transmission with a 195,000 RPM shaft speed is a recipe for disaster.

Helicopters have them in their transmissions. There's a gear reduction in that transmission ahead of the bevel gears. All turbine-powered aircraft engines have multiple right-angle PTOs to power the fuel pumps, oil pumps and electrical generators.

**PJs** · Jan 11, 2019, 11:06 AM

Originally Posted by sossol

Helicopters have them in their transmissions. There's a gear reduction in that transmission ahead of the bevel gears. All turbine-powered aircraft engines have multiple right-angle PTOs to power the fuel pumps, oil pumps and electrical generators.

True, but the scale of this comparatively brings other challenges at those speeds.

**sossol** · Jan 13, 2019, 09:38 AM

Originally Posted by PJs

True, but the scale of this comparatively brings other challenges at those speeds.

Fair point. These engines are used in RC airplanes and are being repurposed into range extenders for electric cars, so I assume that the scale issue has been worked out.

Speaking of non-traditional turbine-powered things, this video came up in my suggested feed after I viewed the chainsaw video (I follow a lot of locomotive-themed channels).