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Other › More Rave "wisdom" from Aox
03-19-2009 10:28 PM  8 years agoPost 1
Aox

rrApprentice

Irvine, CA

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If you have a hard auto, and tap the tail a bit, then on the next pack, the TT doesn't sound right, and the tail kicks a bit on flips...

... don't sit there and keep flipping it like an idiot. Land the bird and find the problem!

Kept flipping and saying to myself "that's odd" until the TT gear in the front let go :O I was inverted at the time.

Blades/mainshaft/spindle shaft/flybar. Hit throttle hold before it went in.

Canopy came off, snapped one of the canopy supports clean in half at the hole but didn't hurt the canopy :P

DOH!

-Aox

Synergy N9~/~Trex250-450-600N~/~Logo 500 3D~/~Rave 3D~/~Mini-Titan A109K2
AMA #902257 - OCMA

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03-19-2009 10:32 PM  8 years agoPost 2
USNAviationjay

rrElite Veteran

Houston Tx USA

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I can relate.. I rebuilt last week.. 150 bucks worth... went out and maidened it again.. tail was doing some twitching.. thought it was just gain issues from moving the servo to the boom.. and 2 seconds later tail let go.. main drive on the tail transfer gear had unseated (the pig screw even though locktited moved) and thus was causing the tail to pulse till it finally disengaged completely.. causing a nasty tail loss spin and yet another 100 dollar crash.. damn 55 dollar blades killing me..

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03-19-2009 10:47 PM  8 years agoPost 3
Stick Twanger

rrApprentice

Honeoye Falls, NY

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"That" would be why I prefer a belt drive. With a belt, you would have been off and flying.
I wish they would offer the Rave in both configurations.

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03-19-2009 10:52 PM  8 years agoPost 4
USNAviationjay

rrElite Veteran

Houston Tx USA

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A belt would ruin the rave.

Belts just don't spin as free and arnt as efficient as a TT.

the TT on the rave is soo glassy smooth that and the larger blades is why it autos so well even compared to the G5 spinning the same blades.

the belt on the G5 eats up too much inertia and makes autos just a little better than a normal 450.

I wouldnt trade this tail for any other belted tail in the world.

it comes down to I made a mistake and I paid for it.

and the moral is.. if it doesn't sound right or look right land NOW.

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03-19-2009 10:56 PM  8 years agoPost 5
Buzzin Brian

rrProfessor

College Station,​Texas

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That goes for any heli! Not just the Rave!

Build it, fly it, crash it. Repeat as often as needed.

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03-20-2009 02:11 AM  8 years agoPost 6
Sky Dancer

rrVeteran

Bryan, Texas

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IMHO, I wouldn't want to spoil the Raves's outstanding mechanics (virtually frictionless) with a belt drive.

But, I would like to mention, whenever I've crashed and stripped a tail gear, I always replace all tail gears and never look back ($12.99). http://www.powerhelis.com/prodinfo....ND%2DYR%2DAS026

This is outstandingly cheap insurance. I also twist test the torque tube to make sure it's still solid and not split. Doing this gives me confidence that I don't have to worry about any future tail problems due to a cracked gear that I just didn't catch.

Don C

Keep up your rotor speed !

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03-20-2009 03:45 AM  8 years agoPost 7
cstoneman

rrApprentice

Colorado

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TT for me.

And keep that info coming. I am always sorry to hear about crashes, but also learn how to avoid the same thing myself. Very helpful posts.

My Rave 4S is scheduled to arrive tomorrow, and I received the Mini-g, TP 40A ecs, and other stuff today. I still haven't ordered batteries. If I am real motivated this weekend, I will have it done, and no batteries.

I wonder if it will hover on a 3S well enough to finish the mechanical setup?

On top of that, JB had to have that 2 Pantera 50's for $300 sale, and two of them are going to show up next Wed.

Wonder when I will get any flying time.

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03-20-2009 03:55 AM  8 years agoPost 8
JayL

rrVeteran

Leesburg GA

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I have to say was a little worried about the small tail gears at first but after 8 flights im realy starting enjoy this machine and the tail gears are worn in now so their silky smooth. I could never get a belt set up this smooth.

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03-20-2009 04:05 AM  8 years agoPost 9
Aox

rrApprentice

Irvine, CA

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The only time I've had a problem is when I did something poorly. Other than that, this TT setup is UBER smooth, and looks like Thundertiger is coming out with a TT setup for the MiniTitan as well. I'll be switching, if I don't turn it into an AH-1 Cobra

-Aox

Synergy N9~/~Trex250-450-600N~/~Logo 500 3D~/~Rave 3D~/~Mini-Titan A109K2
AMA #902257 - OCMA

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03-20-2009 04:24 AM  8 years agoPost 10
Carbon Copter

rrVeteran

USA

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I wonder if it will hover on a 3S well enough to finish the mechanical setup?
Of course.

~oo~ Stop fogging up my glasses

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03-20-2009 04:26 AM  8 years agoPost 11
Carbon Copter

rrVeteran

USA

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and 2 seconds later tail let go
Jay, another good reason to land right away. I had the tail let go on my MiniTitan one time and it was pretty crazy. High HS and the heli just started heading for me and I could not control it. Of course, I hit TH and moved out of the way, to watch it smack into the ground. But for a few seconds, it was scary.

~oo~ Stop fogging up my glasses

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03-20-2009 04:44 PM  8 years agoPost 12
Sky Dancer

rrVeteran

Bryan, Texas

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cstoneman,

FYI.... I always install the servos before assembling the side frames. This saves time and it's much easier to hold the servo retainers while screwing the servos down. Then, just apply a little Poly Zap to the retainers for future servo changes. Be sure to determine the location (upper or lower) of your rear cyclic servos depending on which servos you use. I'm using the JR285MG's and they mount in the upper position in the side frames.

BTW.... You shouldn'y have any problems using 3S.

Have fun!

Don C

Keep up your rotor speed !

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03-20-2009 06:10 PM  8 years agoPost 13
cstoneman

rrApprentice

Colorado

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Thanks for the info Don,

The cyclic servos are 285MG's. I have a couple 3S batteries for the Blade 400 I bought for my wife. I bought a bunch of Dean's connectors yesterday so I plan on putting a Dean's on the Blade, and the 3S batteries.

If I can get enough juice from 3S to get a hover, so I can get the mechanical stuff set, the basic setup on the Mini-G and radio, I will be set for now.

I am still searching for the best price for Outrage 4S 2200 packs, and it looks like $73 is about the best I can find.

I also got a Hyperion EOS0610i dual charger, so I can charge two at a time. I figure 4 batteries will be a good start. I still have nitros to fly while I wait for batteries to charge.

I don't know much about LiPo chargers, so I hope that charger is ok.

I figured for $265 it probably is.

All said, I build pretty slow. but then the last one was an X-Cell, and they take forever.

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03-20-2009 07:16 PM  8 years agoPost 14
USNAviationjay

rrElite Veteran

Houston Tx USA

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Yes the Duo is a great charger.
wont have any issues as long as your power supply is fairly stout. as for charging 2 batts at a decent charge rate is very demanding on power supplies.

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03-20-2009 08:06 PM  8 years agoPost 15
cstoneman

rrApprentice

Colorado

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I have an Astron 25A switching supply, that should do the trick. I also have an old 50A Astron stored somewhere, but I don't think I will need that much.

AND THE GOOD NEWS. The FedEx guy just dropped off the Rave.

I went through everything that arrived from yesterday and today, and as long as everything is in the Rave box, I am in business minus some 4S batteries.

Now I have to start building, as soon as I am done with my client.

WOOT....

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03-20-2009 09:20 PM  8 years agoPost 16
inkspot1967

rrProfessor

Cranston Ri

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i also have the Hyperion EOS0610i dual charger and im using a 20amp power supply no problems and i could easily charge 2 6s 5000's at 5amp each with it.

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03-20-2009 09:39 PM  8 years agoPost 17
Sky Dancer

rrVeteran

Bryan, Texas

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cstoneman,

What is the mah capacity of your 3S packs?

FYI: I consume about 350mah (per minute) doing mild 3D and FAI style flying. Hovering might only use around 300mah (per minute) so you can divide your 3S LiPo capacity by 300 to get an approximate length of flight on your packs. Remember, it's best to not use more than 80% of the capacity of your LiPo pack before recharging.

Have fun with your build!

Don C

Keep up your rotor speed !

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03-20-2009 09:42 PM  8 years agoPost 18
cstoneman

rrApprentice

Colorado

My Posts: All  Forum  Topic

Thanks for the info.

I would imagine I will have a charge rate of 2.2A each for the 4S 2200 packs, so it seems I will be fine.

I don't know much about LiPo, but I understand that charging higher then 1C is a bad idea?

I haven't taken the EOS0610i out of the box, but it appears to work differently the the cheap 3S E-Flite charger that charges through the balancing connector.

It seems this one charges through the hot connector, and monitors through the balance connector. When in doubt, read the manual.

A bit more complicated then pumping nitro into a tank.

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03-20-2009 09:55 PM  8 years agoPost 19
cstoneman

rrApprentice

Colorado

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They are 3S 1800 MAh. The Scorpion -10 might not be very efficient with 3S, and draw more current then normal.

If I can get a hover I will be happy. It will amount to a lot of 10 second hovers while adjusting links to get the swash and tail servos mechanicaly set. Then work on the gyro.

Probably not much point doing anything with the curves beyond a basic setting, until I get the 4S packs.

It will be fun to build, but I wish it was done. I am really excited to see if the 350's are as stable as everyone says.

The little blade 400 is fun to fly around, but in hover with wind, it sucks.

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03-20-2009 11:51 PM  8 years agoPost 20
Sky Dancer

rrVeteran

Bryan, Texas

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cstoneman,

Your 3S LiPo and -10 motor (w/14T pinion) will give you a head speed of around 2300 with the throttle at 100%. That's a pretty low head speed for the Rave but should still work. You might see a little wobble due to a low head speed but the -10 draws less current than the -6 and that's why your head speed will be so low.

With this setup, you should be able to get around 3:30 to 4:00 hovering minutes on a fully charged 1800mah 3S LiPo. And, charging at 1C is a good idea.

I'd still get your 4S LiPos as soon as you can, though....

Let us know how your build is going.

Don C

Keep up your rotor speed !

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