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Home✈️Aircraft🚁HelicopterFuel-Helicopters New or Limited ActivityNext D › New ENV Owner, first nitro
05-08-2013 01:01 AM  6 years ago
Topic Vote0Post 1
whoodie

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Plano, Tx

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New ENV Owner, first nitro
So, I'm finally taking the plunge into Nitro. The convenience and longer flight times are making me do it, I promise it's not because of the noise or smell (no seriously, I'm not a fan of either). Here is the build:

Rave Env
V-Bar + Spektrum backplate governed
OS 105 + MP7
8917HV on cyclic & throttle
8900 on tail (Futaba PS01 RS step down)
2s Lipo direct
710 mains 110 tails

This is my first nitro heli, but I've had many electrics, currently the hangar has a 500se & 6003D Logo and a Rave Ballistic. All of the components are scheduled to arrive on Thursday and I'm taking the day off on Friday to build. Hopefully it will go smooth and I'll be able to maiden this weekend. Wish me luck!
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05-08-2013 02:33 AM  6 years ago
MarshallB

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Middle Arkansas

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You won't need luck with that gear. That's good stuff.. But, good luck anyway! Holler if ya need help..
CurtisYoungblood.com
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05-08-2013 05:41 AM  6 years ago
James Allen

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South West, OH USA

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Very nice setup Whoodie! If you like the Ballistic, Your gonna love the ENV nitro for sure!!

The build goes real smooth, and almost to quick. Enjoy.
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05-08-2013 04:32 PM  6 years ago
Fnity

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Denver, CO

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Congrats! Looks like a sweet setup, I run the 8917HVs as well. You will love it
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05-08-2013 09:07 PM  6 years ago
Buzzin Brian

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College Station, Texas

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All good there. You will love it!Build it, fly it, crash it. Repeat as often as needed.
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05-09-2013 12:38 AM  6 years ago
whoodie

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Plano, Tx

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Congrats! Looks like a sweet setup, I run the 8917HVs as well. You will love it
Are you running the servos unregulated?

Thanks guys, looking forward to the build, whenever the heli gets here, shipment is delayed 1 day now
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05-09-2013 03:54 AM  6 years ago
Fnity

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Denver, CO

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Are you running the servos unregulated?
I run straight 2S to the 8917s, and use a WR regulator for tail and throttle
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05-09-2013 03:35 PM  6 years ago
Ejeremy

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Bourbonnais,IL

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Love this heli!! I'm running a 3300 2s lipo unregulated to my bls255 and bls256 hv servos.

Jeremy
Team Futaba
Team Thunder Tiger
Team Radix
VP Powermaster Fuels
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05-09-2013 05:47 PM  6 years ago
whoodie

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Plano, Tx

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I run straight 2S to the 8917s, and use a WR regulator for tail and throttle
Great, thanks for the info! Everything is now on trucks for delivery today. Work is excruciatingly difficult right now
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05-09-2013 06:11 PM  6 years ago
Fnity

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Denver, CO

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Nice, Let us know if you have any questions

Don't forget the pics!
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05-14-2013 03:44 AM  6 years ago
whoodie

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Plano, Tx

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Well, I think I got it all ready to maiden tomorrow. There sure are a lot of little things a nitro has that an electric doesn't. I had to make 4 unplanned trips to the hobby shop, 2 for nitro related items, and 2 for airframe parts, specifically for the electronics setup. The build went extremely well. With my experience with the Ballistic, this was just more of the same. I'll post some notes I kept from the build, things that were different from the manual. I've just done a double check of the electronics setup and a final nut and bolt check.

I'll be flying it tomorrow over my lunch hour. I think I'll be emptying out the office, everyone is interested in seeing it fly. I told everyone that it will either be spectacular, or boring. I'm hoping for boring, which means I'll hover the first tank.

My exact plans for the flight are:

1. Make sure it starts (I've got a remote glow on it)
2. Make sure I can shut it off remotely (throttle trim)
3. Hover for a few short periods (30 sec to 1 min, making sure everything is ok, running rich enough, etc...)
4. Landing and idling to let the engine cool off (10-20 sec or so).
5. Repeat #3
6. Finally, cutting off the fuel supply and emptying the carb.

A lot of this is to familiarize myself with the nitro aspect. How to start it, how it feels when I starve it for fuel, etc...

I would love some input from you guys, words of wisdom/encouragement. I'm bringing the nitro guru with me to the flight line so he can help me, he's a wiz at tuning nitros, so that will hopefully ease my nervousness.
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05-14-2013 04:13 AM  6 years ago
Kinger

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Granville, OH

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Instead of using trim to shut it off remotely, I'd do a kill switch instead. Just program a switch on your radio that brings the throttle down below your idle point on your radio and when you hit it the engine will die right away.
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05-14-2013 04:14 AM  6 years ago
MarshallB

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Middle Arkansas

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Most importantly make sure you have the throttle hold set to go to idle on the appropriate switch. Make sure your throttle is opening and closing properly. Counter clockwise usually opens the throttle and clockwise goes to idle or shut off. I always set a switch in a location where I can't accidentally hit it to shut the throttle barrel closed, in other words a kill switch like Kinger said. He beat me to it while I was typing. This is the way I shut my engine down. I do not close the line and let the engine run out of fuel. That's a bad idea. You basically are leaning the engine which is not a good idea especially if it is regulated. The regulator will basically keep fuel out of the carb if the engine is not running. Is this the regulated engine or muffler pressure version? These things are easily checked out on the bench. On the regulated engine, the first time you crank it for the day, it's a good idea to prime the carb first and it will start easily.
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05-14-2013 04:56 AM  6 years ago
whoodie

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Plano, Tx

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Thanks for the tips. I'll program a kill switch tomorrow morning.

This is the regulated engine. I understand cutting fuel flow will cause a lean condition. Documentation says that the last flight of the day I should shut the engine off by cutting the fuel flow. Is this not necessary? I'm only running one tank tomorrow, that's all I have time for, if all goes well, I'll fly it again after work, but I'm currently not planning to.

I'm not running a governer tomorrow, but will eventually. So I'm planning on a straight, 0 - 100 throttle curve. Is this Ok? Should I put a slight bump in it at around 25% to get the headspeed higher? What do you recommend for the curves?

Again, thanks for all the help, its greatly appreciated!
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05-14-2013 05:06 AM  6 years ago
MarshallB

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Middle Arkansas

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The 0-100 may be sufficient for a normal mode/take condition but you really need to have sufficient throttle around the mid stick and amount of pitch (roughly 4-6 degrees of pitch) to lift of. I always have the idle1 and 2 switch positions setup close on throttle curves to switch into for the flights whether break in or not until I have the gov setup and working.

You could setup idle 1 to something like: 85-70-60-70-85
You could setup idle 2 to something like: 90-75-65-75-90

The mid may need to be a bit higher but you really need to hear how it is running to be able to determine that.

Once you get some fuel through the engine and are flying it, it really flies nicely around the 1980 HS area.

These should be close enough to run a tank through it and be able to keep the engine up to a reasonable rpm to get a couple of tanks through it. Those numbers should be close but you may need to adjust them based on how you have it tuned.

I would rely on the kill switch, not closing the fuel line to stop the engine.

However, After running an initial tank through mine, I start tuning the engine to get it up to normal operating temp to get the ring on it's way to seat/break in and I usually do it flying around figure eights, loops and mild 3d in the process. The engine needs to be in an operating range for it to break in properly. Everybody has their own way to break in an engine but that's mine and they usually last a long time and produce very good power.

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05-14-2013 02:31 PM  6 years ago
Richardmid1

rrProfessor

Leeds, England

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Keep checking the muffler bolts are tight every 2-3 mins for the first couple of tanks especially if its a muffler pressure fuel system.60% of the time, it works every time!
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05-15-2013 12:59 AM  6 years ago
whoodie

rrNovice - Plano, Tx - MyPosts All  Forum  Topic

Success! Maiden went very well. I ran the trim up to 0 and couldn't get the motor to fire. Two more clicks up to +8 and it fired right up and settled into a low purr, I love OS Engines! Spooling up it, it was difficult to get the headspeed to climb, but it eventually pulled through. The Rave flew like a dream, I landed a few times, once to adjust the tail, the other to tighten the muffler bolts. All in all I'm so happy I bought it, this one bird is going to get many flights!

I can't thank you guys enough for your help. Everything went according to plan and there were no suprises. Now I have to brave the 20+ mph winds that blew in this afternoon. More flights may have to wait until Friday.

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05-15-2013 02:21 AM  6 years ago
Fnity

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Denver, CO

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Very NICE!!! Whats with the blades though

I love the 710 RadixV2s on my ENV/Ballistic
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05-15-2013 02:24 AM  6 years ago
Ejeremy

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Bourbonnais,IL

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Congrats!! Your gunna love her!!

Jeremy
Team Futaba
Team Thunder Tiger
Team Radix
VP Powermaster Fuels
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05-15-2013 02:26 AM  6 years ago
KennyS

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Marble Falls, Tx

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Sweet, another Rave in da house!Only Fine Helis, Hobbywing
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