Kenmore Air

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04-16-2008, 10:17 AM

#11

t-cart

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Posts: 137

I think they are Pratts, but dont understand the flat blades when shut down.

04-16-2008, 01:54 PM

#12

stinsonjr

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Joined APC: Jun 2006

Posts: 919

I think Walter Turbines are supposed to be very similiar to Pratts - just commie inspired. I am not sure the difference in the two, but perhaps that is why it looks like a Pratt, but has unfeathered blades. I believe they put Walter's on a bunch of Ag machines - I think some Thrushes were converted to them from the R-1340 and I also think that they went on some Ag Cats.

Hey - did you ever fly or see a Dromader?

04-16-2008, 02:11 PM

#13

t-cart

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Posts: 137

Quote:

Originally Posted by stinsonjr

I flew one once as a demo. Big airplane. Had good power and carried a load pretty good. The trouble with those planes was that they were maintenance hogs. Lots of trouble with the stacks cracking and the ears breaking off, and the landing gear struts were bad to leak down. I think you could buy a new one for around $200,000 toward the end of their production run. The Walter is being sold as a conversion for the big three airframes. None of the airframes are coming out of the factory with Walters. I know several guys that are running them and they seem to be doing well. The Walter feathers on shutdown also.

04-16-2008, 05:44 PM

#14

stinsonjr

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Quote:

Originally Posted by t-cart

Thanks for that T-Cart. You flew the Radial engined one then. Isn't that basically a Wright 1820 that the Polish built under license and the prop turns the wrong way? How big is it compared to an AT-802? Sorry for the questions - but you are the person on APC whose career path I want to follow.

04-16-2008, 06:12 PM

#15

t-cart

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Posts: 137

Quote:

Originally Posted by stinsonjr

I really dont know if its a copy of the 1820. I flew it once, and I do think that the prop turns backward. I know the smaller PZL engines did turn backwards. Those engines were around 600 HP. As far as comparing to a 802, Size would be the only comparison. The 802 is one of the "cadillacs" of the ag fleet. It has an 800 gallon hopper,but more importantly, it will carry it. It has a P&W -65 or -67 on the front and it is a stud. Thanks for the compliment, and if you have any more ? , ask away or pm me. It really is a great way to make a living.

04-24-2008, 12:04 AM

#16

152heavy

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Joined APC: Jan 2008

Posts: 10

The engine on the otter's are P&W PT6A-135 rated at 750 shaft hp.

04-24-2008, 06:08 AM

#17

t-cart

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Quote:

Originally Posted by 152heavy

The engine on the otter's are P&W PT6A-135 rated at 750 shaft hp.

I thought they were , just couldnt figure out why they arent feathered.?

04-25-2008, 03:10 PM

#18

CessnaCitationX

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Joined APC: Apr 2007

Position: my desk, studying

Posts: 29

Quote:

Originally Posted by 152heavy

I went up to the Kenmore Air operation at lake washington last year and that place has got it going on. They have got beavers and otters from wall to wall!

That is correct. One of the mechanics gave me a mini tour of the place. He showed me the overhaul building. It was amazing.

Yes, those are the Pratts. The mechanic also showed me a turbine overhaul on an Otter.

04-25-2008, 03:38 PM

#19

jungle

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Joined APC: Jan 2006

Position: Burning the Agitprop of the Apparat

Posts: 6,191

Quote:

Originally Posted by t-cart

I thought they were , just couldnt figure out why they arent feathered.?

In many seaplane turboprop installations the engine(s) is started and shut down "on the locks" that is the blades are held in a flat pitch no thrust setting to limit undesired aircraft motion on start and shutdown.