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11-07-2004 01:35 PM  13 years agoPost 1
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

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Whaddup pilots,
I'm the newest aviator the this sport and I'm being thoroughly confused by model helicopter linguistics. I want to get a gas model but I dont know where to start to make sure I get all the correct parts I need. I just pulled out an example from the century heli website:

CN1302 Predator MAX 90 Ratio: 1:8.18 NEW SPRAGUE AUTO ROTATION
CN1302A Predator MAX 90 Ratio: 1:8.45 NEW SPRAGUE AUTO ROTATION
CN1302B Predator MAX 90 Ratio: 1:7.66 NEW SPRAGUE AUTO ROTATION

What is the difference in the ratio good for? I dont know what auto rotation is either but thats another post.


How many servo's and how many gyro's do you need per helicopter, and what is the torque rating? What do they do? I know about gyroscopic recession and all that, but not as it pertains to an rc heli. Is there a website for newbs like me that answeres these questions?

As a transmitter I was looking at the Futaba 9C High End Radio system
and it says, choose the one thats right for you. How do I know which one is right for me?
What is the difference between the S3001, S3004, and S9001 servos? Enough out of me for now. I wish I knew someone in person that could answer these questions, but I dont

Lowenzahn

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11-07-2004 01:48 PM  13 years agoPost 2
pjh

rrApprentice

Hampshire England

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try this link and if that fails buy a book like the one mentioned on the web site( rays something or other) everyone recomends that boohttp://www.raptortechnique.com/faq.htm#98k

The older i get the faster i was

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11-07-2004 02:16 PM  13 years agoPost 3
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

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Updated my profile as well as signing up for the pilot locater, thanks for the info! I'm reading as much as I can trying to learn. I'm still trying to locate a club or some flyers in Germany but I'm having a hard time digging anything up. Thanks again!

Lowenzahn

On the 7th day god created the AIRBORNE! Death from above!

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11-07-2004 02:29 PM  13 years agoPost 4
JuanRodriguez

rrProfessor

The Villages, Florida

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Lowenzahn,
I second the "WELCOME".....

That being said, I will share my opinion with you that I feel getting into a 90 size machine as a "trainer" is a bad idea......Why, you ask ?????

Expense, expense, expense......

Not only are they more expensive to buy, they are more expensive to run and more expensive to repair when the inevitable happens......

If you want to stick with the Century line, a Hawk might be a better choice to start with.

My choice, however, would be a Raptor 50, packaged with the TT50 engine...... That's a really good value for your dollar and will take you from your learning stages through advanced aerobatics without having to make any upgrades or without breaking the bank....

Good luck with whatever you choose....

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11-07-2004 02:44 PM  13 years agoPost 5
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

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Juan,
thats exactly the kind of advice I like to hear hehe, now I have a starting point. I know getting a .90 is stupid as a beginner, I was just using it as an example. I'm going to have fun learing with my Hummingbird once my "European charger" gets in next week, I should've known hah

I did have a few minutes to fly around before I fried my American charger, and the bird didnt want to listen to me. I know this comes with experience but as soon as it got off the ground it wanted to go drastically off into some direction. The controls seemed super sensitive too, is that normal?

Lowenzahn

On the 7th day god created the AIRBORNE! Death from above!

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11-07-2004 05:33 PM  13 years agoPost 6
JuanRodriguez

rrProfessor

The Villages, Florida

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Lowenzahn,
This is not what you're gonna want to hear........

Learning to fly helis on one of those little beasts is going to be quite the challenge, though not impossible....They are a handful, to say the least, will not tolerate any type of "wind" and the flight times are extremely short .... unless you go to Lipos....... which means more money for batteries and more money for a proper charger for the Lipos......

Your problem that the heli wants to go off on it's own direction can mean a few things but primarily, that the heli is out of trim.....

You can get it close by keeping the heli on the ground. Do it on a smooth surface so that the heli can "skate" on the skids without getting snagged on anything.....bring up the power slowly until it's very light on the skids and see what direction the heli wants to go on its own...... Then use the trims on your transmitter to compensate for those tendencies.... What you want to achieve at this point is to have the heli very light on its skids at a point __just__ prior to takeoff so that when it does, it goes straight up as much as possible with as little input from the sticks as you can achieve......

If you don't have anyone that can help in the are where you live then I would suggest you get a simulator and practice on that before attempting the real thing......

On the bright side, if you master hovering/flying that little beast, transitioning to a glo fuel heli such as the Raptor (collective pitch) is going to seem easy compared to the micro (fixed pitch)......

Good luck and have fun !!!!

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11-07-2004 06:17 PM  13 years agoPost 7
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

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Sounds about right Juan. I actually tried exactly what you suggested, rev it up to where it almost takes off, then look in which direction it wants to go and adjust accordingly...but when I adjusted even one tick it would do the opposite, then if I tried it again with the same setting it would do something else again....sounds to me like I just need more time with it. Now lets talk hypothetical for a minute. If I wanted to get the .50 raptor like you suggested with the engine inclusive, what else would I need? The transmitter obviously with what...4 servos? Since I have nothing I'd probably have to get the starter kit and tool kits offered by century, then I also have no idea how to mix fuel (I dont think I can have it mailed to germany). And do the kits come with the glue's needed? I'm very good at building models or pretty much anything, even if I cant fly the darn things yet Thought maybe I could get to building one while I learn with the sim and the hummer (sim will be here tomorrow). Thanks again bro!

Dan

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11-07-2004 07:40 PM  13 years agoPost 8
pjh

rrApprentice

Hampshire England

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there is a "knack" to getting micro heli's airborne and being a beginner doesn't make it easy as you don't know what it will do untill you fly it. a bit of a catch 22 situation.
1. learn the responses you need from the sim(a lot cheaper)I used fms a german freeware program of the net.
2. if possible let an experienced flyer set it up it helps a lot
and here's the crunch
3. Start on a slippery floor and skid it around a bit to get the feel of the controls and to find the point that the heli will lift off. Spool it up nice and slow to allow the tail to keep up. if all goes well put the heli in front of you tail in. spool it up until it is nearly lifting then QUICKLY punch it into the air(add a small ammount of collective not too much you don't want to put the lights out) the reason for this is to get the heli up in the air a bit (2 feet max). The increase in rotor speed will stabilize it a bit so it shouldn't seem to have a mind of it's own and move all over the place like it does just before lift off. you will probably be in the air no more than a 10 second bunny hop at first but believe me it gets better. try to keep your stick movements small as you will be over correcting at first
and keep it tail in.
good luck hope this helps

The older i get the faster i was

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11-07-2004 07:58 PM  13 years agoPost 9
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

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10 seconds at this point would be a world record for me. And what do you mean keeping it tail in?

Dan

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11-07-2004 08:10 PM  13 years agoPost 10
pjh

rrApprentice

Hampshire England

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if you let the tail spin around you will lose orientation at first and always watch the nose of the heli not the tail. that will pay off later when you try nose in.
have fun and don't let it beat you.

The older i get the faster i was

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11-07-2004 08:40 PM  13 years agoPost 11
JuanRodriguez

rrProfessor

The Villages, Florida

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Dan,
The kit comes pretty much complete except the tools, starter, fuel, glo plugs, etc.... as you've pointed out.... Also, you'll need to get "Loctite", the removable type, so that you can secure any screws that go into metal threads.....

Check out this helpful site pertaining to Raptors.....

http://www.raptortechnique.com/

Also, I would not recommend mixing your own fuel..... There has to be other modelers in your area that you can contact for assistance.... If you can locate a nearby RC model shop you'll be able to hook up with someone.....

For a radio system, take a look at the JR 8103. Plenty of radio and moderately priced....

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11-08-2004 04:12 AM  13 years agoPost 12
Lowenzahn

rrNovice

Baumholder, Germany -- Also Anchorage, Alaska

My Posts: All  Forum  Topic

Will do Juan,

and I also was able to make a contact in the town I live in. I havent talked to anyone yet but I got a phone number of a club in the area.

Dan

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11-08-2004 11:48 AM  13 years agoPost 13
JuanRodriguez

rrProfessor

The Villages, Florida

My Posts: All  Forum  Topic

Sounds like you're on the way to a good start !!!

There will be many frustrating moments but hopefully the rewarding ones will overshadow those....

Good luck !!!

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