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HomeAircraftHelicopterBeginners Corner › Engine run-in and no pitch on blades
01-14-2009 09:41 PM  9 years agoPost 1
CUJO

rrApprentice

San Angelo, TX

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So I get my Raptor today and I have my OS Hyper 50 already and know it is best to run-it-in a bit before putting it through its paces. So what's the best way? I don't like the idea of running a whole gallon of fuel through it if I don't have to and some say that just learning to hover will be good enough. But on the test-stand theory if you want to run it full throttle then low throttle through that gallon of fuel, why can't you just mount it in the heli and do the same thing with no pitch on the blades and not go through the extra time and money of building a test stand?

Rappy 50 Titan, OS Hyper 50, Futaba 2.4 7ch.

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01-14-2009 09:51 PM  9 years agoPost 2
airdodger

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Johnston USA

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Running the engine in the heli is fine. Don't put heavy loads on it for a few gallons, just slightly rich is good.

Chris

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01-14-2009 10:21 PM  9 years agoPost 3
AaronJohnson

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mason,MI

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Just put the engine in the heli. Hover for a few tanks and then if you get bored fly around nice and easy. No hard loads and dont lean it out for a gallon or so. Dont run it with 0 pitch, its uneccessary.

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01-14-2009 10:25 PM  9 years agoPost 4
CUJO

rrApprentice

San Angelo, TX

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that's what I was thinking but unfortunantly I'm reading Ray's tech and of course that's the most anal way to do things. I've always thought that OS's were about the best engine you could get.

I've been learning to hover with my AXE and started forward flight today, but I also know jumping to that big of a heli will be totally different and won't mind using a couple of gallons in it learning how to over and slow flight.

Plus I'm getting pretty good at nose-in circles on the sim so I might actualy go to that from nose-in hovers before going to forward flight. No telling, were getting into the windy season and I might be in for a month or so on the AXE and Sim anyways.

Rappy 50 Titan, OS Hyper 50, Futaba 2.4 7ch.

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01-15-2009 01:54 AM  9 years agoPost 5
GMPCOBRA

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oregon

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hay cujo well everybody is telling me that the bigger the heli the better if flys and alot more visable for sure it may just be a bit more intimidating due to the size and costs involved.

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01-15-2009 02:00 AM  9 years agoPost 6
CUJO

rrApprentice

San Angelo, TX

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Well I had a Mini-boy way back in the day and never had anyone to train me and that was a .45. I had a sponsored pilot fly it once when I lived by Austin but now with sims and my AXE, I'm don't think I'm going to be too intimidated as long as I watch what I'm doing and not in AWE of what's going on.

Rappy 50 Titan, OS Hyper 50, Futaba 2.4 7ch.

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01-15-2009 02:09 AM  9 years agoPost 7
GMPCOBRA

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oregon

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ya i had a similar sitchuation with my first gmp cobra in the late 80s so i know what you mean. the sims are awesome now and i am flying o.k with my mx 400 but need to get my 600n off the ground soon and start flying that having a hard time judging distance with the 400 so i think it will deffinatly help to be able to see it.

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01-15-2009 03:39 AM  9 years agoPost 8
Way2slow

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Jeffersonville Ga

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Hover it a few times to get used to it, then start hovering it a little higher and have it further away from you. Get it where you are comfortable with it 20 - 30 feet off the ground and 50ft away from you. Just do it for short moments, land it, let the nerves settle and do it again. When you get comfortable with that just make you a few ovals, land it, get rid of the shakes and do it again. Within a day or so you will feel just fine doing ovals and figure eights. Just remeber to bring it and land it after short flights until you can get where you don't have the shakes after setting it down. I think it took me about two days before I could fly a whole tank doing ovals and figure eights in both directions without having shakes when I landed it. I still wait about 10 after the second tank just to give me time to relax.

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01-15-2009 12:11 PM  9 years agoPost 9
red_z06

rrProfessor

Dumont, NJ

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OS Hyper 50 will run at 1.25-1.5 turns open normally. For break-in flights(no bench run), start about 1 additional turn open or about 2.25-2.5 turns. Hover and circuit flying is fine as both occurr around the hover pitch.

After every tank, close the needle by 3-4clicks and continue to do the hover/circuit flying. When you reach 1.5 turns out, you can fly harder. This should take you 4-6 tanks to do it or at the most 1 gallon of fuel.

www.JustinJee.com

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01-15-2009 12:26 PM  9 years agoPost 10
predatorman

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Falkland Islands

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I wouldnt mess around with the zero pitch idea....at full power you could end up throwing a blade...and for a nanosecond you would get a kaleidoscopic view of your nice shiny Raptor...and then silence

Like mentioned before, go fly it...just hover about and keep a careful ear open for the engine...make sure its not spluttering or bogging down...stay a metre or so up...if the engine quits DONT panic...just come down and land gently.

Use a Hoop, make one up out of plastic tubing...same size or just under the rotor diameter..this is a good idea with a new heli that you might not be used to.
Fit the hoop when trying a new heli, fit it when testing a gyro...fit it when learning hovering about 'nose in' it will save you big bucks should you make that silly mistake.

Make sure to fit a filter to the fuel line, and check it out every two or three tankfuls....its suprising just how much rubbish a filter will catch.

Just take it easy if its your first proper rc heli, always check the machine over after flying...if in doubt land it and get it checked over. A well looked after model, and flown without pushing your luck too far, will last a long time.

Enjoy

Quality takes........time!

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01-16-2009 12:15 AM  9 years agoPost 11
airdodger

rrElite Veteran

Johnston USA

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Opening the needle an extra turn is not a good thing to do, the ring seats very fast and depends on combustion pressure to seat the ring. Not to mention the temperature won't be anywhere near what it will be when adjusted correct, which will make the parts distort differently than when running correct. There is plenty written about this here on RR.

Chris

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01-16-2009 02:21 AM  9 years agoPost 12
Way2slow

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Jeffersonville Ga

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I've only broke in four Hyper 50's but I started with all four of them at 1 1/2 turns on the needle and left the mixture centered the way they came out of the box. I just didn't go more than 3/4 throttle for the first couple of tanks and then added more throttle the next couple. Then I started tweeking the mixture and needle each tank full until I got peak performance. With the Align pipes I find the miture needs to be closed several degrees and the needle usually sets between on click lean of one turn to two clicks richer than one turn (depending on temp). Type Muffler and temps will make a huge difference in settings so just because someone else runs a certain setting, don't think it will be good for yours.

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01-16-2009 01:31 PM  9 years agoPost 13
CUJO

rrApprentice

San Angelo, TX

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so when you all are talking about so many clicks or turns your talking from a totally closed valve, right?

Rappy 50 Titan, OS Hyper 50, Futaba 2.4 7ch.

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01-16-2009 11:27 PM  9 years agoPost 14
Way2slow

rrVeteran

Jeffersonville Ga

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Yes, all references are to closing the needle valve and opening it where you decide to start. I also don't agree with opening it 2 1/2 turns but I will never claim to be an expert on them. At the same time, I would never start a new engine at less than 1 1/2 turns. As for the reference to clicks, when you turn the needle valve, it has that little detent spring on the side to hold it's setting and it clicks. So, when I refer to two clicks rich from one turn, I close the needle valve, open it one full turn and then open it a little more until I feel two clicks on the detent.

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