C-ARF Ultra Flash build Thread + Video
#4052
Husa, It's always the little things that seem to take the longest time to correct and when they come back to back it just makes it harder to get motivated to finish it. At least that's the way it ends up for me. I remember the days of staying up on a Saturday night trying to finish up a .40 size ARF for a maiden the next day. Now unless it's for an upcoming jet rally I just say it can wait.
Here's the take off roll of the Flash. The landing looked pretty much the same but went further down the taxiway to the right due to no air left for brakes. Could have probably aborted the take off but we all know how those split second decisions go.
https://www.youtube.com/watch?v=as3CPYmfXKg
Here's the take off roll of the Flash. The landing looked pretty much the same but went further down the taxiway to the right due to no air left for brakes. Could have probably aborted the take off but we all know how those split second decisions go.
https://www.youtube.com/watch?v=as3CPYmfXKg
#4053
My Feedback: (134)
Your takeoff roll is actually not all that uncommon -- or at least I have seen that several times on some of the UF's. On mine I have a separate takeoff rate with the steering rate turned down very low. This rate comes on when I have the gear down and flaps deployed otherwise set to full rates for Taxi. Also, lots of people use a cheap gyro just on the steering channel and that really helps take the wandering out of the equation. I don't use one on my Flash but do have one on my Comp Arf Viper which has a huge tail fin and can wander on takeoff roll with big cross winds. Takes that problem completely out of the equation.
#4054
Thread Starter
Husa, It's always the little things that seem to take the longest time to correct and when they come back to back it just makes it harder to get motivated to finish it. At least that's the way it ends up for me. I remember the days of staying up on a Saturday night trying to finish up a .40 size ARF for a maiden the next day. Now unless it's for an upcoming jet rally I just say it can wait.
Here's the take off roll of the Flash. The landing looked pretty much the same but went further down the taxiway to the right due to no air left for brakes. Could have probably aborted the take off but we all know how those split second decisions go.
https://www.youtube.com/watch?v=as3CPYmfXKg
Here's the take off roll of the Flash. The landing looked pretty much the same but went further down the taxiway to the right due to no air left for brakes. Could have probably aborted the take off but we all know how those split second decisions go.
https://www.youtube.com/watch?v=as3CPYmfXKg
Dave Bugz had his new UF at our grass strip BBQ today and made two great flights, landing well within our small grass strip without even breaking into a sweat....one or two P-140RX passes got some attention from the assembled audience :-) Great flying.
Dw
#4055
Join Date: Apr 2013
Location: holland, NETHERLANDS
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Sorry, not at home now so no picture available, but i did the door setup exact as per manual.
But cause the nose wheel not falling in to lock i removed the door, cause of the air resistance pushing against it.
Cheers,
Ed
#4056
Join Date: Jan 2007
Location: Castle Rock,
CO
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Making Progress
Here are some shots of progress on the electronics bay. Question - How much protection do you need for wiring laying in the bay? Just protect sharp edges? I am used to protecting wiring in heil's due to vibrations. Not sure how much is needed on Jets. Don't want to add any more weight than necessary.
#4057
Join Date: Apr 2013
Location: holland, NETHERLANDS
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Looks really clean Spike!
What i did is just before give the internal an paint spray, is sand away all the sharp edges and sticking out fiber pins etc.
No vibrations on a jet as far as i'm concerned.
What i did is just before give the internal an paint spray, is sand away all the sharp edges and sticking out fiber pins etc.
No vibrations on a jet as far as i'm concerned.
#4059
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Join Date: Mar 2009
Location: London, , UNITED KINGDOM
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Guys I set the aircraft as DW recommended, and truly this is an AWESOME jet. it is super smooth and just rocKs. At our club meet and BBQ with 70 odd people watching the pressure was definitely on. No giro, standard DW set up I just flew her and she performed fantastic. This was only my 2nd flight ( I did have a Classic flash) and gotta say this jet just goes where you point it. DW was taking a few pictures and I forgot and just wound it up and the turn of speed was superb. If you want a great flying jet then I think you couldn't go far wrong with an UF. Yes it is a jet and you have got to respect that, but I am still smiling 6 hrs later. Cheers all, cheers DW.
Dave Bugz.
Dave Bugz.
#4060
Join Date: Jan 2007
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#4061
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I had checked the steering after the flight at the field yesterday and there's probably a bit too much throw and to make matters worse I just now checked my radio and I had zero expo on the steering. I like expo. Also noticed a little play in the strut so will have to pull that and check. Just got the plane back in the shop and looked for the brake leak first which took about five seconds as it was loud. Tire rubbing against the air line . Though I had enough clearance and had it secure. All in all I was pretty lucky to get away unscathed. I think sometimes taking a long time on a jet can be just as bad as pushing hard on one as taking long breaks between assembly sessions makes it easy to skip over steps you may have thought you already finished.
#4062
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#4063
Join Date: Jan 2007
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#4065
This is where my SmokePump ended up.
I made it with the full duct but it indeed was an Mega pain "there where the sun never shines" but made it. Had to glass an other layer on my sadels any way cause of the leaks so they have an full extra layer all over
About to insert te engine permanent. Then the last bits and pieces, adjusting en programing and it should be ready
bluelevel,
Did you balance the plane with the tanks full?
Cheers,
Ed[/QUOTE]
I made it with the full duct but it indeed was an Mega pain "there where the sun never shines" but made it. Had to glass an other layer on my sadels any way cause of the leaks so they have an full extra layer all over
About to insert te engine permanent. Then the last bits and pieces, adjusting en programing and it should be ready
bluelevel,
Did you balance the plane with the tanks full?
Cheers,
Ed[/QUOTE]
Last edited by Bravo77; 04-17-2014 at 08:49 AM. Reason: got the answer
#4068
Thread Starter
Paul
Never used one personally, always use the Powerbox smoke pump which has been brilliant. Sold a few of the JetCat units early and Mk2 and never had any complaints. Linking to ECU is neat safety feature, but its a chunk heavier than the PB unit, so always gone that way and run the power from a Powerbox unit saving more weight!
Dave
Never used one personally, always use the Powerbox smoke pump which has been brilliant. Sold a few of the JetCat units early and Mk2 and never had any complaints. Linking to ECU is neat safety feature, but its a chunk heavier than the PB unit, so always gone that way and run the power from a Powerbox unit saving more weight!
Dave
#4069
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#4070
Join Date: Mar 2009
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I'm not sure how much of a tip this is as you may have already done it or it could be something that everyone already does, but if you cut a small piece of 3mm Airline put it into the M3 Grub Screw hole in the nose retract unit, as you tighten the screw it creates a dampening effect on the steering which can be enough to stop the wheel veering around when accelerating, aswell as gives enough resistance on the steering to hold it straight when retracting the gear.
#4073
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#4074
Join Date: Apr 2013
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Balanced mine gear up (cause this is the way you fly, when going gear down it will become slightly more heavy on the nose witch is no problem) tanks full and empty and took the average of both. I'm using the saddles for fuel and wing for smoke.
Balanced her upside down, so canopy facing to ground.
Flying it came out nose heavy so tossed out the 100grams i had to put in the nose.
Now she's as neutral as neutral can be, tanks (including wing smoke) full and empty, normal flight as well inverted.
CG stay's the way it is, not an single click of trim needed, all surface in neutral stand
Got the PB smoke system and in combination with the PB smoke oil it really is amazing smoke, very nice
Really an great and forgiving flyer!!
Balanced her upside down, so canopy facing to ground.
Flying it came out nose heavy so tossed out the 100grams i had to put in the nose.
Now she's as neutral as neutral can be, tanks (including wing smoke) full and empty, normal flight as well inverted.
CG stay's the way it is, not an single click of trim needed, all surface in neutral stand
Got the PB smoke system and in combination with the PB smoke oil it really is amazing smoke, very nice
Really an great and forgiving flyer!!
#4075
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Join Date: Feb 2013
Location: Sydney, AUSTRALIA
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Ultra Fun,
Just home after a great day test flying my new Swiss Ultra Flash,
Wow, We'll done CARF, she is a keeper, Fast ,stable and rock steady in the air. Great combination with a 140 as well.
Regards
john
Just home after a great day test flying my new Swiss Ultra Flash,
Wow, We'll done CARF, she is a keeper, Fast ,stable and rock steady in the air. Great combination with a 140 as well.
Regards
john