RE: flyzone diablo  
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RE: flyzone diablo - 5/2/2008 3:06:27 AM   
animal acker


 

Posts: 144
Joined: 2/29/2008
From: st. louis, MO, USA
Status: offline 		I like the exhaust mod. You say that it helps, is it really noticeable or a little?

As far as the C question, I asked my lhs guy and he compared it to a fuel line on a car. The higher the C is like having a bigger fuel line, more gas can flow at a given time. Gary you are basically right on the money with your explanation. I still want to know how many watts are coming out of my batteries. Guess I need a wattmeter eh?

(in reply to Vertical3-D)
       Post #: 351

RE: flyzone diablo - 5/2/2008 5:25:52 AM   
northchim


 

Posts: 127
Joined: 2/24/2008
From: Denair, CA, USA
Status: offline 		Yeah, a watt meter is a super valuable tool. You can use it to check the charge on your batteries as well as verify your not going to fry any of your equipment. Since I've gotten mine I have used it constantly, checking amp draw with different props, ESCs, batteries, etc. It's really cool to see how your set up really works, and of course check how many watts your motor is handling.
I've heard that explanation of a fuel line also. But what does the C actually stand for?

(in reply to animal acker)
       Post #: 352

RE: flyzone diablo - 5/2/2008 1:22:20 PM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		the exhaust mod seems to make the air coming out more concentrated, before it felt turbulent shortly after the exiting the pod, but not anymore, and it also feels like more thrust, it almost slid off my couch when I reved it once to check the setup out before flying it...but I am already searching for a faster motor, the XF fan uses a three bladed fan with the jetscreamer outrunner motor and is pushing a plane hobb-lobby sells to 70mph...so the question I guess it whats really causing the issue, the motor, the EDF unit, or the plane....I doubt the plane cause its kinda similar to the twister which people really seem to like...if the jetscreamer wasnt 75 dollars I'd just get that and an xf fan to put in the diablo, I may go to the xf fan and a higher KV inrunner...

_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to northchim)
       Post #: 353

RE: flyzone diablo - 5/2/2008 3:47:21 PM   
northchim


 

Posts: 127
Joined: 2/24/2008
From: Denair, CA, USA
Status: offline 		verical,
I don't know if you know this, but I tried an XF Fan with a 5400kv motor from Dons RC called the "Wicked Extreme". On a 3s lipo there is just not much difference in power. There was not a significant increase in speed over any other BL set up. I'm concinved the only way to get serious power is to run a 4s Lipo. When I bench tested a 4s battery with an AMMO 24-45-3790 a couple of months ago it sounded waaaay stronger than a 3s battery! It just so happened that the Hyperflow could not hold the power and practically decintergrated at close to full throttle. But maybe the XF Fan can I don't know. I gave up shortly after that on the Diablo and moved on to other projects. The XF Fan was an easy swap into the engine pod and is fairly cheap at around $25. A 4s Lipo is going to run around $125 and an ESC to handle all those watts is going to be around $125. My original goal was to make the Diablo go 100mph. I no longer beieve this small of an EDF can reach 100mph though, but maybe you can do it. I'd love to see you do it! If you can do it, I may just get another Diablo . I wish you the best of luck. Gary

(in reply to Vertical3-D)
       Post #: 354

RE: flyzone diablo - 5/2/2008 10:26:35 PM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		I think a plane that size could do 100, my pockets are just not that deep, I think 70 is an achievable though, which might push 100mph coming outta of a dive from say 200 feet or so, but at 70 this thing would handle very well I bet, the faster it goes the better it performs so far...heres a link to the plane on hobby-lobby that is appearently hitting that speed on 3s with a jetscreamer and an xf fan Lynx XF EDF check it out, its even doing it on an 18amp controller and a 1320mah pack...if thats the case maybe thats why the motor is 75 bucks...

_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to northchim)
       Post #: 355

RE: flyzone diablo - 5/3/2008 1:11:46 AM   
northchim


 

Posts: 127
Joined: 2/24/2008
From: Denair, CA, USA
Status: offline 		I like that Lynx, it's a real performer. It's quite a bit lighter than the Diablo though, I noticed it gained altitude way faster than the Diablo can. Gary

(in reply to Vertical3-D)
       Post #: 356

RE: flyzone diablo - 5/3/2008 1:30:02 AM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		then the diablo should be even faster due to the higher wing loading, it is a cool jet and if to diablo ends up failing in the performace category I may switch to a lynx, I was even thinking of using the hyperflow in the lynx so just buy the airframe and switch everything over, I'd add functioning rudders though casue I like to do stall turns...I am trying another thing this weekend, I cut 3/4 of an inch off the end of each wing and each side of the tail, so I reduced to lifting surface a bit, also reducing drag and bumping up the wingloading higher still to increase speeds...so we will see what it does, that wicked extreme motor should push the xf fan faster then the one used in the lynx so that diablo should have been screaming, even with the 3s, it draws alot more then the jetscreamer motor though. I also think the diablo's power pod cause alot fo drag but theres no fix for that, cause I dont want to have to build a whole new nacell

< Message edited by Vertical3-D -- 5/3/2008 1:32:14 AM >

_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to northchim)
       Post #: 357

RE: flyzone diablo - 5/3/2008 5:17:15 PM   
animal acker


 

Posts: 144
Joined: 2/29/2008
From: st. louis, MO, USA
Status: offline 		Vertical: Go to page 9 in this thread and look at my black diablo motor setup. I stripped the motor mount away and used a couple of zip ties to hold down the edf unit I also glued a hollowed out section of an old edf to the back but a tapered down section would be better, like you did with yours. That seems to remove the clutter of the nacelle, I mean it has to because its gone. Also, If you reduce the lift capabilities of your wing by cutting some off and also reduce your thrust by using that cone on the back of the edf will you have enough power, that is to say, thrust, to get airbourne?
Of course we wouldnt even be talking about the motor on top if not for northchims idea. Not bad Gary...Necessity is the mother of invention.

(in reply to Vertical3-D)
       Post #: 358

RE: flyzone diablo - 5/3/2008 6:17:15 PM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		yeah the pod on top is by far the best mod to this plane along with getting advanced wings for it...the cone is in place to concentrate and increase thrust, by compressing the outlet stream it increases the exit velocity, I saw that mod and to the black one and am gonna take another look, I may just build a whole new nacel I would use the stock intake ring that came with the hyperflow in the box the use my exhaust cone, maybe tonight I'll get to building, it would reduce drag alot, so it may help some with the speed...it will definatly still fly with the little I took off, just wondering if it will help the speed/handling...my best advice would be to modify and or build planes from scratch, its a blast and I still learn alot from toying with stuff, like the trainer I built from the diablo wings, it took flight yesterday for short circle up over the nieghbors house and back to the driveway, landed rough, no major damage, gonna fly them both today...

_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to animal acker)
       Post #: 359

RE: flyzone diablo - 5/3/2008 9:33:07 PM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		built the new nacel before flying today, I dunno if it was my mods or the 15mph wind, but this thing was flying darn good, not super fast in level flight but with a short dive the passes were fast and I made 3 inverted passes 2 were under 10 feet and the third was withing 2 feet of the ground for about 15 feet, smooth as glass...it flew perfect and I am very happy with it, rolls are 2-3 at a time I made 4 at one point...snap rolls are impressively nice, split-S turns also are smooth with this plane...I am enjoying it now...check out the nacel I used alot of the older stuff, the canopy is now half of what it was ending just before the nacel, I moved the rear magnets so its still secure...from the head on photo it looks uneven from side to side but it is just an opticle illusion, something to remember about making a nacel is you still need to retain the full exhaust duct whether your using the stock on or mod one like I did...once again it doesnt look the best but Im more for function over form...anyway let me know what you think of it...if anyone wants more setails to mod theirs similarly jusdt ask as I'd love to help with whatever I can to fix this foam brick...

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_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to Vertical3-D)
       Post #: 360

RE: flyzone diablo - 5/4/2008 12:45:23 AM   
Vertical3-D



Posts: 1560
Joined: 7/23/2005
From: Myerstown, PA, USA
Status: offline 		just ordered an XF fan plus the accessories set for it to use part of the cowling it has with it...still looking into what motor I am gonna use with it, I need to keep the max draw under 25amps for the sake of the ESC and the 15C packs I have, I looked into the C a bit more, for example a 15c pack can be drained at 15 times its capacity so 15 times 1.5 amps on a 1500mah pack so safely I can pull 20 or so continuos amps out of it, and should be able to burst upto around 25-30 without issue, venom aircorps makes a 3980KV and a 4980KV so I think one of those may work well, they are 20mm x 40mm size, I'd like to by the jetscreamer but 75 bucks! OUCH!...

_____________________________

..."They took everything, even the stuff we didnt steal"..."They took the bar, The whole damn bar"...

(in reply to Vertical3-D)
       Post #: 361

RE: flyzone diablo - 5/5/2008 10:58:13 PM   
animal acker


 

Posts: 144
Joined: 2/29/2008
From: st. louis, MO, USA
Status: offline 		Vertical: How is your motor secured on the fuselage?

I flew my plane with my new 2150 mah battery 25C it makes the motor have alot more balls!

(in reply to Vertical3-D)
       Post #: 362

RE: flyzone diablo - 5/6/2008 12:34:24 AM   
sparky4166


 

Posts: 68
Joined: 3/11/2008
From: Jonesboro, AR, USA
Status: offline 		I flew the diablo today with my 6dxi, Brushless (20-40-4040) and advanced wings. Not what I was expecting. It pretty much had the glide ratio of a brick. It did fly ok though. I didn't have enough throw in my alerions so it wouldn't roll. Heading back out in a bit to fly again with more throw. I wonder how it would do with one of my 2150mah packs out of my trojan? I'll post back later
-me-

(in reply to animal acker)