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CARF Mephisto debut at Weston Park

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Old 06-18-2017, 07:58 AM
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Dave Wilshere
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Default CARF Mephisto debut at Weston Park

CARF had a new Mephisto at the UK Weston Park show. It had only had two flights leading up to arriving in the UK. The guys managed to get another 5 or 6 over the weekend. JetCat P-220Rxi powered.

Several lots to post
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Old 06-18-2017, 08:18 AM
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More from Friday
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Old 06-18-2017, 11:20 AM
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What's the deal with the wheels sticking out when retracted?
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Old 06-18-2017, 12:55 PM
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Originally Posted by mauryr View Post
What's the deal with the wheels sticking out when retracted?
Although it'll add a little bit of drag, I think this is actually a very good idea to have the wheels sticking out a tiny litte bit. You can store the plane easier and it won't scratch the bottom in case of a gear up landing.

Thomas
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Old 06-18-2017, 01:07 PM
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Dave Wilshere
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Yes, easier to handle in car/van and protects the underside if the electric gear sticks up.
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Old 06-18-2017, 11:48 PM
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Originally Posted by Dave Wilshere View Post
Yes, easier to handle in car/van and protects the underside if the electric gear sticks up.
Wont the landing gear get damaged quite badly in case of a gear up landing? The leg is usually designed to only dampen when extended: when retracted it will act as a big lever to rip the retract out of the rails, is it not so in this plane as well?
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Old 06-19-2017, 12:12 AM
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Its not like you are going to do this every flight...it's to save an expensive re paint. CARF gear mounts are the best in the business, so they are going to be fine, the nose is carbon either side of the mount rails. The units are strong, I don't expect an issue.
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Old 06-19-2017, 03:39 AM
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Whether it was intentional or not, it gives the visual appearance of not being well thought out or engineered correctly. Other than that it's a nice looking sport jet.
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Old 06-19-2017, 04:53 AM
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Most people realise its intentional as all three poke down. Actually in flight with your eyes you hardly notice.

Dave
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Old 06-19-2017, 12:51 PM
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Perhaps , one day I will tell the story of an Anson pilot ( they were a hack on the V bomber squadrons on the 60s ) . The wheels on the Anson protruded below the engine nacelles even when retracted.
With gear failure, he feathered both props. rotated the blades to horizontal on the starter motors, and did a wheels up , dead stick landing, with the only damage a broken pitot head.( which protruded below the nose.) Think it, the Anson T 19, flew the following day!

I think he got a medal (AFC) for his efforts!

So, perhaps, partly protruding wheels are not a bad idea!

David.

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Old 06-19-2017, 02:03 PM
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All three landing gear retract forwards and back? Guessing retracting towards the front? That would make a belly landing much less of an event...especially if the wheels were still free to rotate.
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Old 06-19-2017, 02:32 PM
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What's the weird-looking small set of wings behind the canopy? Is that some fancy new receiver antenna? Looks like the boomerang antenna for a car phone.

Regards,

Jim
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Old 06-19-2017, 04:50 PM
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That's funny' right there. Need some curb feelers, maybe a set of spinners for the rims...

Seriously-pattern guys stick those on the plane, but I wonder how much difference it makes? Too small for lift-more like something to take out turbulence-like G factor correction on prop planes, perhaps?

Also interesting and counterintuitive to me is the blending of the aft fuse into the stabs-more horizontal surface.
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Old 06-19-2017, 09:11 PM
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It's called a Canalyzer, the pattern boys fit them (like F1 cars) to energise the airflow before it passes over in our case the rudder, it makes it even more powerful. It bolts on to the canopy, people will fly with and without it and see the difference. Rudder power is huge on the Mephisto.

The gear all retracts forward and the wheels turn.
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Old 06-21-2017, 12:35 AM
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Post in error.

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Old 06-21-2017, 01:21 AM
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Got a video when the flap servos worked?
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Old 06-21-2017, 01:23 AM
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No. Sorry.
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Old 02-19-2018, 06:09 PM
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Default Mephisto

Originally Posted by DominicM View Post
No. Sorry.
Hi Dave,
I have a it 210 that I could use in the mephisto. How would that work?
I have been thinking about the Mephisto as my next project
.thanks,
stan

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Old 02-19-2018, 09:25 PM
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If you don't have any ambitions to 3D the plane it'll work fine, otherwise anything less than a 300 sized turbine will be disappointing.

Thomas
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Old 02-19-2018, 10:10 PM
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Dave Wilshere
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That depends what you call 3-D. Hovering, maybe a 210 is limited, but tumbles, spins etc I think it’s better as it’s lighter.
It’s an amazing flying machine, very groovy, smooth and locked. If you look at the Xmas video Dom did of mine on it’s fourth flight, it looks like a relatively nice day. It was not! Bumpy, high winds and rain, Dom’s camera and the model made it look like a normal day.
i have a JetCat 220 Rxi in mine and I dont need full power at any point in a normal flight.

I think you would be very happy with the performance on a 210
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Old 02-21-2018, 05:55 AM
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Originally Posted by Dave Wilshere View Post
That depends what you call 3-D. Hovering, maybe a 210 is limited, but tumbles, spins etc I think itís better as itís lighter.
Itís an amazing flying machine, very groovy, smooth and locked. If you look at the Xmas video Dom did of mine on itís fourth flight, it looks like a relatively nice day. It was not! Bumpy, high winds and rain, Domís camera and the model made it look like a normal day.
i have a JetCat 220 Rxi in mine and I dont need full power at any point in a normal flight.
I think you would be very happy with the performance on a 210
Dave that's good new on my KT210.
I drive a mid size Van. One of the attractions to me is the fact that I can break it down to several parts.
Another question is, is it as easy as some have said to break down and put together at the field?
Where are the wing bolts located to attach the wing to the fuse?
I have a Carf Viper that I have been flying for a while and you have to go in through the wheel well's to secure the wing
Thank you for your input,
Regards, Stan.
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