osterizer
Posts: 1548
Joined: 3/10/2007
From: Sykesville,
MD, USA
Status: offline
|
quote:
ORIGINAL: Friday_2006
Do you think that by going to an 11t or 12t pinion and putting on CF Blades would get me a couple of minutes more flight time ?
I am now getting for each of my batteries
1. 2000 => 7,30min
2. 2200 => 8,30min
3. 2500 => 10,00min
I guess that if i get E-Logger i wouldn't need a tachometer, is that right ?
Those aren't bad flight times if you're doing 80%. You might get a little more from CF blades (seconds, not minutes), but pulling the head speed back a bit will definitely lengthen the flights.
quote:
ORIGINAL: Friday_2006
Can you give a further explanation on that "old style" ??
I hope I'm not offending anyone by calling them that, but I think the "hover at mid pitch" was a style that originated with flying styles that didn't include flying upside down. First, making sure I was reading right, that you had 5 degrees positive at mid pitch, and a pretty linear curve from -2 to positive 10?
Proceeding from that- there isn't anything necessarily wrong with that for flying normal, right side up. It gives you full use of the collective, and if you've gotten the throttle curves so you like them and you're comfortable, then more power to ya.
The other side is that it's different from the way you'll set it up for aerobatics if you decide to go for that- for aero you'll need to include the other half of the pitch range (down to -10 in this example), which will make the upright collective positions move to a different place on the stick. You'll want to move it, too, since you want to be pretty close to the same between normal and idle-up modes when you switch between them.
For aero modes, if you're not using governor, you'll probably want to use a V throttle curve, where the center position is at your target HS at zero pitch, and the left and right sides curve up to maintain that RPM as pitch increases, positive or negative. Example 5 point V is simply 100-90-80-90-100.
Setting up pitch to match, then, becomes equally simple, as I described earlier- adjust the head to get everything level and zero pitch at mid-stick/50% on a linear curve, and set the pitch range to +/-10. With that setup, your normal pitch curve is as I said, 40-50-100, and throttle something like 0-70-80-90-100 (I'll let you calculate the points for 7 point curves  ).
Remember you can adjust the curves a bit so they match what you like. These are just starting points, but good ones.
quote:
ORIGINAL: Friday_2006
Do you have any link that i can read and understand everything about curves and how they affect flight characteristics ???
Welcome . Finless Bob's area on HeliFreak has a lot of video and tutorial info that he's put a lot of time into, and they're good stuff. There's a lot of stuff on trextuning.com, too- not so much setup but rather a broad set of info on helis. The latter is TRex oriented, but shhh, don't tell anyone, but these guys are almost all very similar mechanically , so you can learn about one and use a lot of that info with the others.
|
Printable Version
All Forums >> RC Helicopters >> Electric RC Helis >> RE: Mini Titan thread 
RE: Mini Titan thread - 
Actually flight times is something that has two personalities. When i was trying to learn how to hover, actually more struggling than trying to learn, minutes seemed like ages. Now that i hover without trying minutes pass by so fast...! I guess though that i can't have both flight times and high headspeeds 
.