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Turbine mounting What am I doing wrong

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Turbine mounting What am I doing wrong

Old 05-13-2002, 08:20 PM
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bkf
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Default Turbine mounting What am I doing wrong

What am I doing wrong here. The engine sitting to far forward?

The down angle on the exhaust look right?

Life would be so much simpler if the bracket was symmetrical.
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Old 05-13-2002, 08:30 PM
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Nick Yuhasz
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Default Turbine mounting What am I doing wrong

BKF:

I just flew my Roo last weekend with a P-80. What do you have between the mount and the turbine? I used a 1/8" piece of balsa, with holes in it to allow it to sit flat over the bracket mounting screws, then glued a piece of 1/64" ply on the top of the balsa (closest part to the engine). I then added washers to the rear of the mount to give it the downthrust that the manual asks for.

Thanks
Old 05-13-2002, 08:33 PM
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Default Roo / P120

Here is a look at mine
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Old 05-13-2002, 08:33 PM
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Default Turbine mounting What am I doing wrong

Nick it's screwed to the mount direct. No spacers or anything.

Life would be so much simpler if the bracket was symmetrical.
Old 05-13-2002, 08:35 PM
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Default Turbine mounting What am I doing wrong

Looks like you need to turn the mount 180deg ken??
Todd
Old 05-13-2002, 08:37 PM
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Default Turbine mounting What am I doing wrong

Gary Mine looks mounted the same as yours. Why does mine look weird?
Old 05-13-2002, 08:38 PM
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Default Turbine mounting What am I doing wrong

Originally posted by lov2flyrc
Looks like you need to turn the mount 180deg ken??
Todd
I can't Todd. there is not enough room between those allen head screws and the fat band so I would have to notch out the band for the glow plug
Old 05-13-2002, 08:43 PM
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Default P120 mount

Yours looks fine to me. I did dremel a small circular "notch" in my mount, at the glow plug, so I could move the turbine to the rear a little more. You can see in the picture that the screw that is in the bottom of the turbine is as far back against the mount as it can go. I did not install the washers as shown in the manual and Mine seems to fly fine.
Old 05-13-2002, 09:01 PM
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Default Turbine mounting What am I doing wrong

Ok then I guess it is mounted the way it should be. That bottom screw is in the same place as yours. Does yours tilt a bit when you pull up on the nose cone (same as full power) Thanks for the pic it helped alot. Ken
Old 05-13-2002, 09:14 PM
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Default Vectored thrust?

As mine comes to full power, the nose of the turbine drops a little.
I'm guessing that this does not happen as much in flight. If it does, it does not appear to effect the flight characteristics.
Old 05-14-2002, 02:11 AM
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Default Turbine mounting What am I doing wrong

Ken, I am unfamiliar with the JetCat mount, but I would not be concerned about having the P-120 too far forward. Just be sure that your C.G. ends up where its supposed to be and kick the ass end up a bit (not critical, just better the tail be up a bit rather than down a bit). Are we at T minus a few days and counting, or what?
Old 05-14-2002, 08:40 AM
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Default Turbine mounting What am I doing wrong

WM: So you think the butt should be up a bit (for making the nose want to rise with power?) Yep having the turbine closer to the CG does make sense. With the Ram 500 it would be nose heavy. With the JetCat way back it might end up tail heavy. I won't add non functional weight. Makes no sense. Things can be moved around. Ill look at JetBlue. I got a room at Quinte for next month. I hope Tam's event turns out REALLY GOOD. He deserves it. Maybe they will send me a jar of the secret cocktail K
Old 05-14-2002, 09:16 AM
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Default Turbine mounting What am I doing wrong

WM: Figured I would put the shutoff valve here. Easy and quick to get to. And those festo's are now located inside the aircraft.
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