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  1. #2826

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    RE: C-ARF Ultra Flash build Thread + Video

    Smoke :
    I set up the prowerbox pump with diesel as smoke fluid , and got to test the smoke todayfor the first time on the ground only
    when at either full or half throttle , i got puffs of smoke, but not consistent smoke, and it really was not that thick
    anyone know why it puffs on and off -also not sure of the smoke was that thick when it did come out

    using stainless pipe from Motors and rotors, so the shape of the exit should be good
    right now not using a graph- just direct switch for on off (-100 off / 0 (would be half power pump and +100 for full pump)
    how close or far am i supposed to have the tip from the cone of the turbine (right now it is 2.5cm from the exit of the turbine - centered - and maybe a few millimeters into the thurst tube(after the carbon bell))

    thx
    izzy

  2. #2827

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    RE: C-ARF Ultra Flash build Thread + Video

    Different brain-thumb thing...wouldn't like to link Birdy with Ali as two of a kind! I still hated how it worked on Steve Johnson's UF with CROW....hey if it works for your technique

    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  3. #2828

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    RE: C-ARF Ultra Flash build Thread + Video


    ORIGINAL: izzy

    Smoke :
    I set up the prowerbox pump with diesel as smoke fluid , and got to test the smoke todayfor the first time on the ground only
    when at either full or half throttle , i got puffs of smoke, but not consistent smoke, and it really was not that thick
    anyone know why it puffs on and off -also not sure of the smoke was that thick when it did come out

    using stainless pipe from Motors and rotors, so the shape of the exit should be good
    right now not using a graph- just direct switch for on off (-100 off / 0 (would be half power pump and +100 for full pump)
    how close or far am i supposed to have the tip from the cone of the turbine (right now it is 2.5cm from the exit of the turbine - centered - and maybe a few millimeters into the thurst tube(after the carbon bell))

    thx
    izzy
    Izzy

    Diesel is never that good. Your set up sounds OK, you could move the smoke tube exit back so its a bit further behind. 4cm

    Dave

    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  4. #2829
    Andrew Bird's Avatar
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    RE: C-ARF Ultra Flash build Thread + Video

    Ali would be proud to know he's got a lot in common with me! A fine head of hair, mighty sense of humour and classic good looks

  5. #2830

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    RE: C-ARF Ultra Flash build Thread + Video


    ORIGINAL: Andrew Bird

    Ali would be proud to know he's got a lot in common with me! A fine head of hair, mighty sense of humour and classic good looks
    Ginger!? Nah...
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  6. #2831
    Andrew Bird's Avatar
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    RE: C-ARF Ultra Flash build Thread + Video

    He wishes he was a ginger! We clearly are the master race

  7. #2832

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    RE: C-ARF Ultra Flash build Thread + Video

    Children,

    Given this thread has only just become straight after a Hogwarts moment, shall we take this 'off stage'? I've already had a 'stoking' email from the chief gimper and nudger with his big stirring spoon, AKA.......

  8. #2833

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    RE: C-ARF Ultra Flash build Thread + Video

    Curious, has anyone had any experience with the electric gear/brake package combo for the ultra flash available from dreamworks ? I'm always up for giving something new a try and I really like the idea of electric brakes and retracts.

    http://dreamworksrc.com/catalog/comp...bo-p-3614.html

    My UF arrives today and the turbine is already waiting for her Just need to order a few minor things. Any input on the gear would be appreciated. Thanks !

    -Nick

  9. #2834

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    RE: C-ARF Ultra Flash build Thread + Video

    Hi Nick,

    I've ordered the electric gear/brake combo from Dreamworks and the package arrived today.
    upon initial inspection the units appear well built, I plan to install them tomorrow so will come back with a report once they are installed and working.

    At this stage I'm planning to do the maiden flight this weekend.

  10. #2835

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    RE: C-ARF Ultra Flash build Thread + Video

    Sounds great !, I'll be traveling for the next few weeks so I'm not in a immediate rush to buy.

    Can't wait to hear your review/thoughts on them

  11. #2836

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    RE: C-ARF Ultra Flash build Thread + Video

    These look good ,wonder how they would stand the test of the Irish weather ,look forward to your findings ,

  12. #2837

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    RE: C-ARF Ultra Flash build Thread + Video

    Double post!
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  13. #2838

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    RE: C-ARF Ultra Flash build Thread + Video

    Since I have three Ultra Flashes to do, I thought I'd share my canopy fixing method. Everyone is different, but this one works for me.

    Out of the box the canopy frame has a joint tape, this needs Dremelling down, I use a sanding drum and a tapered stone for the front. I also go around the frame with the drum sander and remove all the lumps and un-even thickness.
    Then I cut the glass to size, leaving only 5mm at the front and 12-15mm at the rear.
    I then fit the frame with the front rod and pull back and tape the rear to get an even gap.

    Thread the glass in by squeezing it clear of the frame, so as not to scratch and pop it into place. Lift it and check it sits with no gap front and back. Move it forward slighly and place a dob of ZAP 20 centre of the glass front and back. Slide the glass back and gently insert the front before lifting the rear-hold it in position and kick with an O type kicker (weaker version-NOT std Zap kicker its too strong and will fog the glass)

    Once dry you can remove the frame as the gap will stay and with finger and thumb inside, around the frame loop position roll/push the glass up until the is no gap on the hoop. Squeezing one side hard put some ZAP 20 on the inside glass edge-frame joint and kick. Do the other side and there should be no hoop gap.
    Put the frame back on and check you have not twisted the frame/canopy and if all good remove again and tack inside every 2" alternate sides, each time placing it back on the model to check for twists.
    Once complete I run around the inside with ZAP 560 canopy glue to seal down the glass....done!

    Dw
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  14. #2839

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    RE: C-ARF Ultra Flash build Thread + Video

    Last couple
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    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  15. #2840
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    RE: C-ARF Ultra Flash build Thread + Video



    Great post Dave,

    Just to check, I am assuming the O type kicker is the Foam Safe Kicker.?
    JR 11X Zero, DMMS, DSM2
    Carf Ultra Flash, P140RX
    Elan Boomerang, P80SE

  16. #2841

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    RE: C-ARF Ultra Flash build Thread + Video

    Yes, its weaker and won't fog the canopy. You must use ZAP 20 too, anything else too thin.
    Did the second of three I have to do yesterday, I ran a black marker on the frame cut edge to get rid of the white line before gluing the screen in.

    Dw

    [quote]ORIGINAL: ons_pk

    Â*

    Great post Dave,

    Just to check, I am assuming the O type kicker is the Foam Safe Kicker.?

    [/quote
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    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  17. #2842

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    RE: C-ARF Ultra Flash build Thread + Video

    Finally did my weight and balance on my UF.

    Balance point between 225 and 230mm.

    Weight with smoke tanks, pump, and battery for the smoke pump, 22 lbs 12 oz's. Not to bad.

    All that is left is to prime the fuel line and set the KT 140 up with the transmitter.

    Hopefully next week to finally get it in the air.

    I love the paint scheme on mine.

    I am undecided as to darken the canopy. I like they way they look darkened but the sun here in AZ gets pretty hot here in the summer.

    Stan
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  18. #2843

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    RE: C-ARF Ultra Flash build Thread + Video

    Stan

    Looks good, enjoy.

    Dave
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  19. #2844
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    RE: C-ARF Ultra Flash build Thread + Video

    Finally got my 2nd day of flying the UF. I live in Washington and it rains a lot here. Great airplane. Built per instructions. P140RX. Saddle tanks, wing tank is smoke. Using a PB smoke pump with a single Tams stick (the new one with the little tab on the end). Tons of smoke with Super Dry and is light on fluid use. Photos below - some aren't so great, but I work with what I'm given!

    Thanks for the help with the RX issues Dave.

    Bill B.
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    www.jetsoverwhidbey.com

  20. #2845
    ons_pk's Avatar
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    RE: C-ARF Ultra Flash build Thread + Video

    Bill

    Looking great. Nice field you got there.

    Still working on mine.


    JR 11X Zero, DMMS, DSM2
    Carf Ultra Flash, P140RX
    Elan Boomerang, P80SE

  21. #2846
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    RE: C-ARF Ultra Flash build Thread + Video


    ORIGINAL: ons_pk

    Bill

    Looking great. Nice field you got there.

    Still working on mine.Â*[img][/img]


    Thanks. Yeah it's a great field, we're very fortunate! Kind of small though. Main runway is only 200' x 5,000'.

    Bill B.
    www.jetsoverwhidbey.com

  22. #2847

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    RE: C-ARF Ultra Flash build Thread + Video


    ORIGINAL: reznor

    Finally got my 2nd day of flying the UF. I live in Washington and it rains a lot here. Great airplane. Built per instructions. P140RX. Saddle tanks, wing tank is smoke. Using a PB smoke pump with a single Tams stick (the new one with the little tab on the end). Tons of smoke with Super Dry and is light on fluid use. Photos below - some aren't so great, but I work with what I'm given!

    Thanks for the help with the RX issues Dave.

    Bill B.
    Bill

    Looking good in the bright sky.
    No problem, pleasure to help.

    Dave
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  23. #2848
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    RE: C-ARF Ultra Flash build Thread + Video

    Dave,

    Can you confirm that you are using the CARF setup as per the UF update

    http://www.carf-models.com/public_ca..._update_v2.pdf

    Or have you found better settings?

    Thanks,

    Jan
    It is always pilot error.

  24. #2849

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    RE: C-ARF Ultra Flash build Thread + Video

    ORIGINAL: Springbok Flyer

    Dave,

    Can you confirm that you are using the CARF setup as per the UF update

    http://www.carf-models.com/public_ca..._update_v2.pdf

    Or have you found better settings?

    Thanks,

    Jan

    Jan

    I'm running exactly that set up. I have not changed the settings since 2010 when I wrote that section. For me and many others it works perfectly, some people like Ali prefer CROW and less flap. I have flown a few UF models set up that way and I found although it changed the sit to a nose high position, so scrubbing speed that way, the 'drop off' was more sudden just before touch down.
    So it really depends on you landing style. The UF will touch down with very little ground speed.
    I would say with the stock set up its important to set the flap-elevator compensation so the aeroplane stays level at full flap. I watched someone bounce their UF several times last week because the nose was slightly down and I don't think they were holding off enough. The UF has plenty of elevator authority, its not like a Bandit where you are hauling on the elevator on touchdown.

    Can't say there is a right or wrong. Movement wise those settings are quite responsive, so if you like a softer response, reduce them down a bit-Ailerons especially.

    Regards

    Dave

    If you look at Bill's landing shots above, looks perfect touchdown angles and stock set-up.
    Motors & Rotors. JetCat, Powerbox, Intairco, Behotec, Graupner. CARF-models Rep. JR Propo for ever!, Jet 1A, MAP, Evojet, BVM

  25. #2850
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    RE: C-ARF Ultra Flash build Thread + Video

    Does anyone have information. UF + I gyro. what would be suitable airspeed factor value? or something that would be good to know ..

    Petri


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