RE: flyzone diablo (Full Version)

All Forums >> [Electric Aircraft Universe] >> Electric RC Jets



Message


northchim -> RE: flyzone diablo (3/10/2008 2:45:37 PM)

Erik St: The problem with the plane on that video really was me. I did not understand how to properly CG the plane yet. But it flew like it did because it was tail heavy in a big way.




northchim -> RE: flyzone diablo (3/10/2008 2:52:02 PM)

Aniaml acker: You can get a cheap diablo from Tower Hobbies Scratch & Dent site.
Do you want to stay with an EDF jet or get something with a prop or go gas?




northchim -> RE: flyzone diablo (3/10/2008 9:16:01 PM)

Take your vector plastes off when you switch to top mount motor. I forgot to say that in the video.

I have not noticed near as many radio glitches since I installed my motor on top. Could it be that the motor pod on the bottom was the major cause of the glitching/blanking? Anyone noticing the same thing?




paul daniel -> RE: flyzone diablo (3/10/2008 11:14:34 PM)

He guys: Meant to say it would do a loop in level flight with the pod on top and thrust dealie taken off. Makes no difference as far as the canopy disrupting airflow since it is smooth. I flattened the wing out by taking the dihedral out of the outboard section and added ailerons. The performance was just slightly better. I think it would make a good glider. It would not roll unless it got up lots of speed and was way high. As far as glitches, it's the radio, not the plane. I'm flying mine with a Futaba 9C and have had no problems. BTW, the T-28 is a great plane. Rock solid in the air, looks good and a good deal.
Paul




northchim -> RE: flyzone diablo (3/11/2008 12:18:24 AM)

paul daniel: Are you using the receiver that came with the Diablo?




Erik St. -> RE: flyzone diablo (3/11/2008 1:08:48 AM)

BRUSHLESS UPGRADE: WOW! I put in a 4850kv el-cheapo form hobbycity ($16) and 30amp ESC ($9.75). It sounded so amazing, felt so powerful, I figured something would go wrong. It did.

When removing the old motor, the CA helping hold it in place required some prying, during which I damaged some of the plastic inner fan motor mount. I hooked up this litle screamer (which requires M2.5 BTW and good luck finding those, sadly they did not come with my motor), and gave it a whirl.

It was fast, numerous loops from level, I'd say %60 throttle was the same as WOT with brushed motor. I flew two batteries and each time after landing realized how tense and jittery this 50,000+ RPM (claculated-no-load) flight was making me; just great.

I will say however, from about %90 throttle and higher it just seemed to make more noise and vibration, and no more clean thrust. That may be because upon inspecton the motor was askew, blades crooked, and 3 motor wires twisted up tighter than, ahh, tighter than, I don't have and good 'isims", they were just twisted. So I can only guess the motor ripped out of the motor mount.

Time to fix, that was well worth it so far.




animal acker -> RE: flyzone diablo (3/11/2008 3:06:44 AM)

Idealhobbies: The result of the crash was my hotdogging, plane and simple. I was showing off and got burned. I have flown this thing more times than I can count, my back yard is a big field as well as my place of employement. I was doing low level passes trying to frighten my girlfriend. (It was rather funny) then I thought I woould do an inverted fly by but I misjudged a nearby tree.
northchim: I have for the most part resurrected the old beast, tonight I got the last wing down from the tree with a big stick and some luck. And numerous throws. I want to stay with a jet, electric. I went to the hobby store and had a long chat. Learned about how batteries work in relation to the motor. Oh and my brushless ammo 20-40-3500, is ruined, I broke the shaft off in the crash. It was quite a doozy. Luckily business is slow at the shop so the owner is ready to make some deals. we shall see what comes of this.




Erik St. -> RE: flyzone diablo (3/11/2008 4:24:52 AM)

I've had troubles with the upgrade , I figured it out eventually, the motor was not spinning in the mount; the entire HyperFlow was spinning; not enough glue for the upgrade! I hope I used enough epoxy on the second go-round. I'll let you know. Those poor wires were all wround up!.




northchim -> RE: flyzone diablo (3/11/2008 5:01:23 AM)

I ordered another Diablo from Tower's scratch & dent along with the advanced wings. I also got the Ammo 24-45-3790 with the SS35 speed control. I plan on running a 4s LiPo. I think this will be a strong combination.

I'm going to play around with some wing designs just for fun.




idealhobbies -> RE: flyzone diablo (3/11/2008 2:55:39 PM)

Animal.... I'd say go for the Parkzone T28. It's a great plane. I'm enjoying the heck out of it.




sparky4166 -> RE: flyzone diablo (3/11/2008 5:07:43 PM)

Man am I glad I found this thread. Been out of the hobby for about 20 years but lately have been getting that urge to fly. Bought my diablo from my LHS about 3 weeks ago and home to the workbench for assembly. I was extremely dissapointed with the construction after seeing the promo videos but it's too late now, I gotta fly something. Assemble and wait for good weather to fly. Finally a few days later a calm morning so I throw it in the back of the truck and head out to a field for some flying. After a quick radio check I launch and away we go. Slow climb to about 100' then start a slow left turn, looks good so far, I think I actually remember how to fly.[:D] Whoa, a sharp right turn and dive with no control whatsoever. Maybe I don't remember. After recovery I find a broken wing and pod full of mud. Oh well, repairing is half the fun. Back on the bench, 30 minutes, some CA and Epoxy, change the throw on the servos and I'm ready again. Later that afternoon back out again. Uh-Oh, wind. Should I or not? hmmmm Why not, I've got lot's of CA. Radio check ok, Lauch and off we go. Wow this thing moves on the downwind, and climbs on the upwind. 4 circuits and in for a somewhat awkward landing. Hey, It's still in one piece.[:D] 2 more sucessful flights and suddenly that 10mph wind gust to 20. [X(] I'm not that good yet. Survey the damage to find more than a quick field repair. Broken wing, nose cone, pod full of grass and dirt, elevator, and fuse. Back to the bench more CA and Epoxy and she's ready again. 2 weeks later and finally on Sunday morning it's calm sunny. Off to the field, to find a muck of mud from melted snow. Oh well, I've got my boots. Launch and here we go. 4 sucessful flights with no mis-haps other than a pod full of mud on each landing. I gotta get another battery. Back to the truck to recharge, might as well go for a soda while I wait. Sunday afternoon I'm charged and ready for another flight. Might as well take my son and show off a little. Watch this son. Lauch, Climb, 50', Dive, Splash, right in a mud-hole! Glitch? hmmmmm Uh-oh. Lots of pieces, broken fuse, wings, pod, tail, canopy. Son thought that was cool. Back home at the bench Lots of Glue and Tape, 30 minutes digging mud out of the pod and it's back together. Too late to fly but let's power it up and check the radio. Uh-oh. I didn't realize the motor had smoke in it. Apparently it's pretty important too because after I let it out it doesn't work any longer. I'm guessing the motor isn't sealed and took on some water from the. LHS is closed for the week so I'm in out of comission for the week. Too the computer to see what I can learn. Luckily I find this thread and learn all kinds of interesting things.

1.) Scratch and Dent is the way to buy. (Got one on the way will be here tomorrow)
2.) Glitches in this radio is common and maybe all the crashes weren't my fault.
3.) Pod on top is the only way to go. (already made the mod to my plane just waiting for my kit to get here so I have a good pod)
4.) Always do lot's of research online before making those impulse purchases. (already looking at .40 trainers)
5.) This hobby is still a blast.

Anyway, for those few that actually made it this far in this long and boring post I appreciate all of the info posted here and look forward to getting back in the air with my new mod's for some action packed afternoon flying later this week. I will definately be checking back here for updates and will keep everyone posted (with shorter to the point post) of my adventures.

Happy Flying!!!!!!!!!!!

Sparky




paul daniel -> RE: flyzone diablo (3/11/2008 5:59:22 PM)

I chucked the whole radio and am using a receiver that I fly with my bigger stuff. The original radio did work though. I sold it on Ebay and got 13 bucks. What does that say for it?
Paul




northchim -> RE: flyzone diablo (3/11/2008 11:18:31 PM)

paul daniel: Doesn't say much for the radio at all. $13 is probably more money than what is cost hobbico to purchase it.

Sparky: welcome aboard. We know how it feels.




animal acker -> RE: flyzone diablo (3/11/2008 11:45:14 PM)

Sparky: Welcome and hello.
Ideal: I will check it out. I did get a new power pod and a new motor, a 20-30-5440 e-flight, this should be a bit better than that ammo I broke. I can still use my 25 amp esc and my three cells. This time the pod goes on top! and the plane stays away from the trees.




animal acker -> RE: flyzone diablo (3/11/2008 11:49:49 PM)

North: why the 24-45-3790? I was under the impression that the high rpms would be more important than the torque of the motor in producing thrust. Can you enlighten me?




Erik St. -> RE: flyzone diablo (3/12/2008 2:55:05 AM)

I flew through a few batteries with the new brushless reattached (after the whole hyperflow was spinning in the pod). This time with the pod on top, and as everyone is saying, it worked just fine. I did hack off the back half of the canopy just to be sure it didn't interfere with air intake.

Problem: at around half throttle there is tremendous vibration coming from the fan/motor, and I can see that the fan is wobbling like it's not on-center, but when more throttly is applied it disappears! The problem is that I don't always want to fly at %60 or more because it's fast and sometimes I just want to cruise around.

Last, I love the brushless 4850KV cheapo upgrade. I'm not sure how long it'll last but it sure is fun. How many of you are doing inverted flight, I did some today. I wish I'd tried it with stock motor just to know if it was possible.




animal acker -> RE: flyzone diablo (3/12/2008 3:06:35 AM)

Erik: I had this same problem after a small crash. Try checking the screws that mount the motor to the frame of the hyperflow. I flew inverted with the advanced wing and my old brushless. but not with the brushed.

And I have a question about brushless motors. The guy at my shop told me I could run an e-flite 20-30-5440 with my stock battery.(3-cell). But the info online says 2 cell I am using my 25 amp esc, the battery puts out 1500mah and 1.5A MAX charge 15C continuous discharge. does this sound safe or should I look for something else?




idealhobbies -> RE: flyzone diablo (3/12/2008 3:58:07 AM)

The battery may not have enough C. You may just have to try and see if she gets hot. If you have access to a Watt Meter, run it on the ground before you launch. Good luck Animal!




northchim -> RE: flyzone diablo (3/12/2008 5:38:37 AM)

Animal acker: I went with the Ammo 24-45-3790 because it is the strongest motor recommded by hyperflow, the maker of the ducted fan. I know they have tested it and have verifyable data that I was able to look at myslef. I'm not looking for the absolute highest KV out there because that might not be the best thing overall for the plane. If you run a 20-30-5540 motor, you'll be limited to a 2s LiPo. If you run a 3s battery you'll be over the 50,000 rpm limit of the ducted fan unit and more than likely damage something. A 2s LiPo will not give you much power at all. So basically I decided to go with what's been tested and proven instead of taking a chance with the unknown. Running a 24-45-3790 with a 4s LiPo is gonna have gobs of power and torque.

I have kinda half-heartedly tried to fly inverted with the stock set up, but it is so underpowered that I had a hard time keeping it inverted.




White Raven -> RE: flyzone diablo (3/12/2008 10:32:55 PM)

Hello guys. Just a comment on the radios and glitching. I don't really see how weather on top or bottom the pod matters as far as the glitching goes, but I suspect that the glitches are coming from electrical noise interferance (probly generated by the motor). I haven't flown mine yet, or tore it apart, but I wonder if they have effective capacitors on the motor to help reduce signal noise. It could be as simple as signal noise (interferance) and just the right range at that moment that causes it. I had a speed 600 on a plane which I built and used a Futaba radio, constantly had glitches because I didn't have capacitors on the motor. I'm not sure if the issue is the same with brushless, but I know that it can possibly be the problem. The Diablo's radios insides didn't look that much different from an older Futaba. Could be the QC, or perhaps just the reciever itself. If you want to chuck the radio, by all means, message me. I could use a couple back ups.

Anyone starting to change the diablo's paint yet? I'm itching too... :)




northchim -> RE: flyzone diablo (3/12/2008 11:00:42 PM)

White Raven: It's just a guess on my part about the radio glitching more with the motor on bottom. One reason is my plane almost never glitches anymore with top mount motor and my flying habits are the same as before. Secondly, with the motor on bottom it is between the receiver and the transmitter and could cause "blanking".




animal acker -> RE: flyzone diablo (3/12/2008 11:22:09 PM)

I am greatful for your input gentlemen, I will speak with the guy at the hobby shop and find the best choice for me. I do remember something about that 50K limit on the ducted fan now that you mention it. Whew! that could have been ugly.

And with a brushless you can do inverted all day long, and the advanced wing of course.




cloud-base -> RE: flyzone diablo (3/12/2008 11:32:59 PM)

I had all kinds of radio glitches when doing a radio check from all angles and that was before arming the motor. So, not sure about the motor noise. Still waiting to hear from Hobbico who currently has the entire set up (plane and all). We'll see what happens. Glad to see some great progress on working with this interesting bird in this forum!




animal acker -> RE: flyzone diablo (3/13/2008 3:24:03 AM)

Ok I made a purchase. I got the e-flite park 370 its 20-30-4100 and they recommend using a 1320 mah 3cell but Im gonna try my 1500mah 3cell I think I'll be alright. What say you gents?

White raven: I have my Diablo decorated with gorilla glue and black electrical tape, I may paint it all flat black like a stealth and inscribe "I suck" somewhere upon this demon.

I dont have all that many glitches either just lucky I guess. Maybe it's just interference in some areas of the country is greater than in others, along with a cheap transmitter.




northchim -> RE: flyzone diablo (3/13/2008 3:33:41 AM)

animal: sounds like you should have a pretty hot set up. I don't forsee any problem running the higher mA battery. e-flights are great motors I've heard.

You put I SUCK on yours and I'll put FLYING TURD on mine.




Page: <<   < prev  6 7 [8] 9 10 11 12 13 14 15   next >   >>  

Valid CSS!




SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.
0.765625