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The "Money Shot"

Old 10-23-2011, 03:35 PM
  #51  
dumo01
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Sounds like a nice flier in spite of the naming uproar.
Congrats on the maiden
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Old 10-23-2011, 06:05 PM
  #52  
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njs,next weekend then,your field would be an adventure from the norm of rcrcc. one of the reasons i really enjoy fun flys is so i can fly different fields. some folks go to these with planes and setup not to fly...me,gotta fly !!!!!

let me know,and well set a time to meet. hope all well with the family even though their keeping the ms grounded today...lol....

after lunch its off to the field with the foils,parkjet,and pig.sounds like a roast in preperation.
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Old 10-24-2011, 04:39 PM
  #53  
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at 700kvt, you need ether a 13x6.5 or 14x7 prop. 12x6 is to small. 13x6.5 should give you just under 600 watts, and the 14x7 should be > 800.

I've got the Turnigy version of this motor on my E-flite Extra 300 and 13x6.5 will go unlimited vertical, but will not clime out of hover. I just got a 14x7 to try on it.
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Old 11-11-2011, 01:36 PM
  #54  
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Looks like it's in the US warehouse now for 112 bucks.
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Old 11-11-2011, 01:46 PM
  #55  
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njs,its a day off for me today,the weather should be perfect ........that is if winds 15 to25 with gust to 35mph don't bother us..lol... how does your moneyshot fly?[no puns,,,lol]

,sadly...they are saying saturdays winds won't be much better.
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Old 11-11-2011, 01:56 PM
  #56  
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Stu, I'm sure it flies as long as I don't mind going backwards on the upwind leg.

Saturday looks a bit windy too, so I'm aiming for Sunday this weekend. I'll probably go right after our morning service. You're welcome to join me down in Somerset of course. I know you like to stay a little longer in church, though.

And, yes, the Moneyshot still flies. I had a REALLY close call last weekend when I fumbled on the rudder during a knife edge, but it's still in one piece. I'll try it with a 14x7 prop this weekend. Last chance for that Turnigy motor to show me that it can deliver some real power. Bring your breathing apparatus in case we have serious smoke!
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Old 11-13-2011, 10:56 PM
  #57  
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I think I finally got the power set up right:

Turnigy SK3 3548 700kv
14x7 APC-E
HobbyKing 60A ESC with SBEC
Zippy Flightmax 3000mAh 4s 30C
Pulling 670W at WOT

All cheap Chinese, but it works sure works!

Now I can do "rocket launches" straight up and easily pull out of botched hovers and harriers (I tend to do a LOT of those).
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Old 11-14-2011, 10:47 PM
  #58  
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It sounds like you have found the sweet spot for your power system, nice work. Is the motor reasonably cool after use?

I read in another forum that one guy has a tail fail with flutter on his Moneyshot, though he said it may possibly have been an elevator servo arm failure that caused the flutter. Any sign of flutter on your model when you dive at high speed?

Steve
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Old 11-14-2011, 11:06 PM
  #59  
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Originally Posted by JetPlaneFlyer View Post
It sounds like you have found the sweet spot for your power system, nice work. Is the motor reasonably cool after use?

I read in another forum that one guy has a tail fail with flutter on his Moneyshot, though he said it may possibly have been an elevator servo arm failure that caused the flutter. Any sign of flutter on your model when you dive at high speed?

Steve
The motor is slightly warm. I probably do WOT about 10% of the time, though. It's only needed for sending it vertical at high speed.

As for the fluttering, I haven't noticed anything. Yesterday, I did a lot of vertical dives and all I hear is a lot of hissing as the thick airfoil penetrates the air. Next time, I'll stick my keychain cam on the plane to look for control surface fluttering. But if there were severe fluttering, I have a feeling it would have already ripped the thing apart. I did a lot of vertical dives and KE-spins (or KE-spin attempts, maybe, they always seem to end up in an inverted flat spin, which looks pretty cool too ), which I'm sure puts a lot of stress on the airframe.

As I said, so far I couldn't be happier. Harriers are a bit wobbly still, but I'm sure that's my lack of skill rather than a problem with the airframe...
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Old 11-15-2011, 10:35 AM
  #60  
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Originally Posted by NJSwede View Post
I think I finally got the power set up right:

Turnigy SK3 3548 700kv
14x7 APC-E
HobbyKing 60A ESC with SBEC
Zippy Flightmax 3000mAh 4s 30C
Pulling 670W at WOT

All cheap Chinese, but it works sure works!

Now I can do "rocket launches" straight up and easily pull out of botched hovers and harriers (I tend to do a LOT of those).
Do you know what the all up weight is with the above. Also, what sort of flight time are you getting?
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Old 11-15-2011, 12:35 PM
  #61  
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I haven't weighed it, but an educated guess is somewhere in the 1500-1600g (53-56 oz) range.

I'm trying to figure out the flying time, without having to dead stick it. The thick wing profile causes the plane to lose airspeed quickly, so you always want to land it with a bit of throttle!

As of now, I have the timer set for 5 mins and I have about 15.3V left in the batteries when I land, so I could probably push that a little farther. I'd day 6 minutes are within reach on a 3000mAh battery.
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Old 11-16-2011, 08:15 AM
  #62  
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Originally Posted by NJSwede View Post
I haven't weighed it, but an educated guess is somewhere in the 1500-1600g (53-56 oz) range.

I'm trying to figure out the flying time, without having to dead stick it. The thick wing profile causes the plane to lose airspeed quickly, so you always want to land it with a bit of throttle!

As of now, I have the timer set for 5 mins and I have about 15.3V left in the batteries when I land, so I could probably push that a little farther. I'd day 6 minutes are within reach on a 3000mAh battery.
Do you know how many watts your pulling. Flight time is easy to work out

capacity/amps*minutes. asuming a draw of
3/30(30amps)*60 = 6 minutes flight time

Given you're landing at 5 minutes and at 3.8v a cell i recon you could get away with 6 minutes with out too much trouble.
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Old 11-16-2011, 12:54 PM
  #63  
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Originally Posted by F86-Sabre View Post
Do you know how many watts your pulling. Flight time is easy to work out

capacity/amps*minutes. asuming a draw of
3/30(30amps)*60 = 6 minutes flight time

Given you're landing at 5 minutes and at 3.8v a cell i recon you could get away with 6 minutes with out too much trouble.
It's pulling 650W at WOT, so 650/14.8 = 44A => 60*3/44 = 4.1 minutes at WOT. Now, this is not the kind of plane you fly at constant WOT, so the battery time should be a lot longer than that.

So, yes, I'm sure you're right about the 6 minutes. But since I'm still getting used to the plane, I was playing it safe and landing after 5 minutes. Because of the wing profile is thick and draggy by design, this is NOT a plane you want to dead stick land. It's like pulling the breaks when you cut power.
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Old 11-16-2011, 03:30 PM
  #64  
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Originally Posted by NJSwede View Post
I'm trying to figure out the flying time, without having to dead stick it.
My preferred method there, is to see how much charge the battery takes after flight. If you have a 3000 mAh battery, after 6 minutes of flight, how much charge is it taking back to full charge? That will tell you for sure how far you can go.

If you are charging back and it takes 1500 mAh, you are only using about 1/2 of the battery. You could safely add as much as 4 minutes or so to your 6. If 6 minutes pulled 2500 or more, then 6 is all you want to tax that battery to do.
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Old 11-18-2011, 08:07 PM
  #65  
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Just checked, and they all took between 1400-1500 mAh, so it's safe to say I was a bit overly conservative when I landed after 5 minutes. Looks like I can safely fly for 7-8 minutes then...
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Old 11-18-2011, 08:54 PM
  #66  
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Thats your next test... Fly for 8 and charge. I'm betting you can have 10 minute flights, as long as you spare the vertical climb's and hovering from the last 3 minutes.
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Old 11-20-2011, 01:22 PM
  #67  
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Nice
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Old 11-22-2011, 12:29 AM
  #68  
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If anyone is thinking of getting this plane, you may want to add braces to the hstab similar to these (not a Moneyshot, but almost identical tail feathers):

http://www.rcgroups.com/forums/showp...&postcount=146

There's been reports of elevator flutter and hstab failures. Mine doesn't have these tendencies, but I added braces just to be sure. Costs about $2 and takes 10 minutes tops.

Definitely worth the effort! I love how this plane flies. I'm finally getting the hang of harriers and hovers, thanks to the MoneyShot!
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Old 11-23-2011, 01:48 PM
  #69  
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They finally posted a video!

http://youtu.be/4hzxZ4Z3E6I

How I wish I could fly it like that...
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Old 02-07-2012, 01:50 PM
  #70  
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I just saw the video. That was the sweetest inverted spin!
Don
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Old 02-07-2012, 02:20 PM
  #71  
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Originally Posted by dkrhardy View Post
I just saw the video. That was the sweetest inverted spin!
Don
It's a nice plane and flies great. However, if you consider getting one, you need to install braces on the hstab. It's an easy fix and almost necessary, given the amount of reports about in-flight elevator and hstab failures.

Also, after my crash, I replaced the Turnigy 3548 700kv with the NTM PropDrive 35-48 900kv. The latter pulls 815W (I measured 809W on mine) and has a lot better throttle response (probably because it's spinning a slightly smaller prop). Not sure if I dare recommend the NTM. It's almost too cheap to be true ($21), but it's performed great for me so far.
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Old 02-07-2012, 02:29 PM
  #72  
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NJSwede.

I'm sure glad that had such of a good time with your Virgin. Sometimes it's Hard to get the proper Thrust you need, because of the heat generated by the thought of waveoff on approach.
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Old 02-07-2012, 04:35 PM
  #73  
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NJ You swapped your motor? What prop are you running on it now? that NTM is just about the same as my E-flite power 25 (that everybody on the other site gave me crap for suggesting ) 800 watts out of that motor is pushing it pretty hard.

Does it still 3d with the NTM?
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Old 02-07-2012, 04:47 PM
  #74  
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Yes, I crashed and bent the shaft of the Turnigy motor. In true HobbyKing fashion they were out of stock on the spare accessory packs, so I went for a new motor instead. The NTM is rated for 815W and I measured 809W with a APC-E 13x6.5. I know you're supposed to take the wattage ratings with a grain of salt, so 809W is probably pushing it. Then again, it hovers at about 1/2-2/3 throttle, so I'm not going to pull all those watts more than a couple of seconds at a time.

Does it 3D? Very much so! Unlimited vertical and hovers with ease. The only limiting factor is my lack of skills...

One thing I noticed was a much higher noise level. I haven't had time to go through the plane, but I've heard reports of NTM motors having issues with off-center prop adapters. I'll look into that. Maybe I just need to balance the prop and tighten all the bolts...
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Old 02-07-2012, 04:56 PM
  #75  
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Well sweet. I've pushed almost 900 watts through my e-flite power 25 but E-flite's are good high quality motors:

5/31/2010 11:23:26 5/31/2010 T-34 Flightmax 4000 2 4:15:00 "17.9wh
58.57amp
14.34vm
862watt
1479mah"

I guess instead of waiting for the HK parts to come it, it's time to canabalize my T-34. I'm board of flying that one anyway.
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