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HelicopterThunder TigerOther › Is bogging in fwd flip normal for R50?
11-26-2006 04:18 PM  11 years agoPost 1
husafreak

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Livermore, NorCal

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I'm starting to do basic 3D w/my R50/OS50/GV1/Powermaster YS20% fuel/Maverik 600 blades Velociraptor. One maneuver which freaks me out is when my engine bogs big time during stationary fwd flips. It sounds like the engine is overloaded and the rpm's come right back when I stop, but it sounds like it's gonna die. Maybe I'm not doing them right and using too much collective but it's only fwd flips, inverted is OK for the few seconds I do them and regular flips and rolls sound fine. P.S. I have replaced the fuel lines. Thnks, Eric

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11-26-2006 04:35 PM  11 years agoPost 2
rob_k

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Castle Rock, CO

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No, it's not normal. Sounds to me like you need to set up your cyclic to throttle mixing. Generally, you want to use about 30% cyclic to throttle mixing for a starting point.

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11-26-2006 05:59 PM  11 years agoPost 3
Barney

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Inverness Scotland

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Could be a few things from heavy thumbs to not enough headspeed to start.

whats your setup etc?

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11-26-2006 06:39 PM  11 years agoPost 4
soulrider911

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Novato Ca

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BOGGING

NO it should not, hwever I was having the same problem...without a gov. though....Here is what I did...I noticed that both my aeileron and elevator pitch range was way too high (not collective pitch) cylic pitch angle of the the swash....you should have a maximum of 6-7 degres +- pitch. the way you measure this is by turning the main blades so they are parallel with the tail boom, then push full elevator (right stick) and measure the pitch on the main blades (not the paddles). I have 7deg. of travel on my cylcic and mine flips like crazy stationary with no gov. if you have any questions feel free to pm me and I can send u an illustration.

Why don't cats get gray hair with age?.....

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11-27-2006 03:30 AM  11 years agoPost 5
arceye

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UK

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husafreak:

As others have said it is not normal for the engine to bog down during a forward flip BUT it IS normal for someone who is learning to do them to bog the engine with inexperienced collective management. It just takes a little practice to get it right with the amount of collective and cyclic used and also the stick timimg.

Andy


Kasama Head :(
The Blingiest DOWNGRADE a Raptor can have

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11-27-2006 03:49 AM  11 years agoPost 6
soulrider911

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Novato Ca

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For the most part wouldn't the governor hes using prevent engine bogging???I thought thats what governors are meant to do, keep the engine at a set rpm to the best of its ability...

Why don't cats get gray hair with age?.....

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11-27-2006 06:59 AM  11 years agoPost 7
husafreak

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Livermore, NorCal

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Thanks soulrider and arceye. I'll be setting up my new T-Rex 600 tomorrow so I'll measure the angles on my Raptor. I'll PM you if I can't figure it out on the bench. I probably am just getting way too much pitch with full down and full negative collective. So much that even my governor can't overcome the load. I run 1900 rpm in idle up. I really appreciate all your help though, like I noticed that really good stationary rolls require surprisingly little negative collective (I have green paddles/innfinovation dampers) but I bet money I'm still holding full cyclic and collective way too long when I do fwd flips due to "fear Factor". I'm gonna take it up higher and try using less input. I'm one of very few heli flyers at my local club. Eric

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11-27-2006 10:10 AM  11 years agoPost 8
PaulJC

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Hertfordshire UK

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Vary little neg is needed on any flip roll, about -5/6

Re-entering the atmosphere...

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11-27-2006 05:29 PM  11 years agoPost 9
soulrider911

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Novato Ca

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Hey Erik dude, I was in the same boat as you, except I learned from absoutely no one....and with no one around...I fly in a beat up field behind a home depot center...But pople on Run Ryder really helped me, Had I not discovered this site I probably would have been much worse off. The tip that I got about the Cyclic travel, (which I relayed to you) is probably the single most valuable tip I got. It makes a huge difference if you are runnning too much travel on the cylclic controls, like it was said 6 to 7 degrees max, is plenty. Funny thing is i explain this to so many people in trying to help and they have no ide what I am talking about, cylclic is commonly comfused with Collective. If you need any help feel free to ask.
Brady

Why don't cats get gray hair with age?.....

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12-07-2006 08:54 PM  11 years agoPost 10
husafreak

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Livermore, NorCal

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Just a little follow up. I tried using less collective on my flips and rolls and now they are looking better than ever. I've been using less stick travel and flying smother and more predictably. It's kind of a revelation really. And the energy saved is allowing me to transition from maneuver to maneuver with more confidence. Basically I was over controlling and leaving my heli and me in a depleted energy state after each trick. Well, I also just got a DVD of Alan Szabo flying his Raptors with a transmitter cam inset picture. He talks a lot about using collective and cyclic as little as needed to get the job done and no more... Man, it's like someone turned the lights on in here! Thanks, Later, Eric

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HelicopterThunder TigerOther › Is bogging in fwd flip normal for R50?
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