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CARF Mephisto Build thread

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Old 12-24-2017, 04:07 AM
  #26
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That is a nice scheme D
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Old 12-27-2017, 01:49 AM
  #27
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Few pictures of my installation, turbine weight will affect where things end up. What ever you will never need weight to make a Mephisto balance! I may swap to slightly smaller Rx packs, the 3350's I have allow 9-10 flights on a charge which would be a really good days flying.
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Old 12-27-2017, 04:39 AM
  #28
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Hey Dave, how does the 220 handle it?? as you have also seen it with the KT310, is it worth it to go with a 310?? would the new KT260 be more than enough??

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Cristian
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Old 12-27-2017, 07:44 AM
  #29
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Cristian

Conditions were not the best for either test flight (low cloud base) so feeling the actual power available was not really possible, I guess it depends what you want to do with the model. For general flying, tumbles and Pin Wheel type things, the 220 is more than enough, the 310 fills the ducting and even CARF feel the turbine might be a little restricted without additional byepass air. If the KT 260 is smaller in OA dia then it would be a good choice. Lots of the videos of Marcus flying it has the Frank 250 turbine.

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Old 12-27-2017, 08:40 AM
  #30
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I got a question is this plane can be build with out the trust vector? I'm not a 3d guy but i like this plane and will be a good F3S plane
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Old 12-27-2017, 08:44 AM
  #31
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I noticed that you used a MAP UAT. Is this ok?
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Old 12-27-2017, 11:39 AM
  #32
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Yes, the pipe is an option. Although I don’t think we have done a vector free pipe yet, its possible. CARF guys fly with the vector on all the time...
i test flew mine with it off, only switched it on to test the gyro setting. Flying around and pattern Aeros you hardly notice it.

Yes, MAP Hi Flow with twin inlets. It’s a new version for twin saddle tanks, works perfectly with no air and no noticeable necking at full power. We have run the std Hi flow MAP with 220Rxi and P-200Rx ( both 230N) and no issues

Im not a fan of the hard walled bubble traps that give you little info on the state of you fuel system, I only have to run this at full power periodically and i’ll see if there are any restrictions developing. I have Felt clunks in both Saddle tanks.

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Old 12-27-2017, 02:41 PM
  #33
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It looks like you power the Electron gear with it's own battery--what size are you using?
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Old 12-27-2017, 06:02 PM
  #34
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Quote:
Originally Posted by Dave Wilshere View Post
Yes, the pipe is an option. Although I donít think we have done a vector free pipe yet, its possible. CARF guys fly with the vector on all the time...
i test flew mine with it off, only switched it on to test the gyro setting. Flying around and pattern Aeros you hardly notice it.

Yes, MAP Hi Flow with twin inlets. Itís a new version for twin saddle tanks, works perfectly with no air and no noticeable necking at full power. We have run the std Hi flow MAP with 220Rxi and P-200Rx ( both 230N) and no issues

Im not a fan of the hard walled bubble traps that give you little info on the state of you fuel system, I only have to run this at full power periodically and iíll see if there are any restrictions developing. I have Felt clunks in both Saddle tanks.

Dave
Thanks for your response I was thinking the thrust vectoring was a option but in that case i can probably lock that so i don't have to add those servos do ch limitations
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Old 12-28-2017, 12:45 AM
  #35
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Quote:
Originally Posted by AEROSHELDON View Post
It looks like you power the Electron gear with it's own battery--what size are you using?
I did in this case. Its a JetCat P-20 ECU pack I had spare, so 1000mAh 2s. I was going to take power out of the Royal Bus sockets which you can set as 5.9v or 7.4v output, but felt the full 8.4v might be better with the big legs and wheels. Current draw is tiny, so the 1000mAh pack will do more than a weekend flying. After 5 flights the pack is still sitting over 8v

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Old 12-28-2017, 12:50 AM
  #36
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Quote:
Originally Posted by vquick View Post
Thanks for your response I was thinking the thrust vectoring was a option but in that case i can probably lock that so i don't have to add those servos do ch limitations
You could put the pushrods in and maybe even the servo mounts, lock the rods and use the adjustment to 'tune trim'
Done for get that as the pipe heats it expands so trim changes on the vector. It's a big pipe and it grows more that I expected, CARF say 2mm expansion. I adjusted the pushrods so the vector was square hot, when the model is cool you notice the vector is out slightly.
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Old 12-28-2017, 12:53 AM
  #37
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Couple of more shots off my phone of the instal. Tanks from the wing opening (centre section will mostly stay attached) and the duct space around the P-220Rxi-B
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Old 12-29-2017, 03:14 PM
  #38
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Dave was flying his today at Abingdon in less than ideal conditions, however it seemed to be totally locked in.

Alistair Powers
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Old 12-29-2017, 03:18 PM
  #39
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And a few more

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Old 01-05-2018, 02:44 AM
  #40
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Couple of people asked about storage. This is the model gear up (still roll on wheels onto the shelf) rear fuse and outer wings off.
The canopy is full length so removing it reduces the height considerably. The Canalizer also unbolts with 2 x M4 cap screws.
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Old 01-07-2018, 08:56 AM
  #41
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Another couple of flights today on the Mephisto, too cold to really enjoy-but more valuable set up knowledge. It was quite bumpy in the 15-20mph wind we had. Landing on our 120m grass strip is so easy, its so slow there is little roll out.
Pictures of it in my short wheelbase van which is 2.5m long. Canopy protects the tail cone.
Should have some flying shots in the next couple of days-Pistol Pete had his camera there.
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Old 01-07-2018, 09:25 AM
  #42
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Just for anyone ordering - Revoc have worked with CARF to make wing and fuselage covers which take in to account how things like flaps come off and the fus comes apart. I've got a set on the way for mine when it comes and some for Dave to help with moving and storage. They should be pretty helpful to protect from transport and storage rash.
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Old 01-12-2018, 06:56 AM
  #43
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Few pictures from last weekend taken by Pete
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Old 01-12-2018, 07:35 AM
  #44
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Early flight video at Xmas in horrible conditions
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Old 01-12-2018, 02:21 PM
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Few more
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