Geared Engines and OWTs.

[Berkut]

Originally Posted by Nigel Croker

Uhmmm, because the prop and the gas generator are not physically connected......

Uhmmm, but the propeller and the gearbox are physically connected, which is what he is asking about.

[Roger, Roger]

Originally Posted by Berkut

Uhmmm, but the propeller and the gearbox are physically connected, which is what he is asking about.

Yup.

[USMCmech]

Originally Posted by Nigel Croker

Uhmmm, because the prop and the gas generator are not physically connected...on free turbine designs like the PT-6

However, direct drive designs like the Garrett this is not true.

[Nigel Croker]

Originally Posted by Roger, Roger

Also, what about Turboprops? their gearboxes are many, many times more stressed than the box on a GTSIO-520 and you don't hear the 'Van drivers talking about how you can't have prop driving engine on their motors.

Originally Posted by Berkut

Uhmmm, but the propeller and the gearbox are physically connected, which is what he is asking about.

hmmmm, coulda swore he said "the prop driving the engine"....causing the stress....which would indicate prop connected to engine via the gearbox...mabye I misunderstood his question

Originally Posted by USMCmech

However, direct drive designs like the Garrett this is not true.

you are correct on this statement

[SteveC]

Maybe this will help the discussion a little (?):

pt6.jpg

[mshunter]

Originally Posted by Nigel Croker

hmmmm, coulda swore he said "the prop driving the engine"....causing the stress....which would indicate prop connected to engine via the gearbox...mabye I misunderstood his question


you are correct on this statement

You mad er sumthin? Whats with the big letters?

[Nigel Croker]

Originally Posted by mshunter

You mad er sumthin? Whats with the big letters?

Nah, screwed up the settings thats all....I do that from time to time, I have two left typing fingers...