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Revolution Models . CarbonXtreme . Midland Helicopters

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e-E-Sky Honey Bee- Lama- Belt CP- E-Smart > Did you fly today?
 
 
tryan02
rrProfessor
Location: Canton, Missouri

thank god dymler-chrysler made a jeep for the urban commuter huh?

Canton MO backyard flying club
Club President
Team No funds left.
07-06-2008 11:33 PM
HOMEPAGE  
 
 
Gregor99
Elite Veteran
Location: Western Wa

Quote 
The biggest difference I have noted is that when it lifting at zero or slight neg pitch in the wind and it finally does start to fall, I have a hard time catching it because the throttle has dropped. That requires me to grab a bunch of collective

I can agree with that having recently went through this in a large windy field. In normal mode it feels like it "pops" out of the wind and heads rapidly toward the ground. I'm working on idleup and will take special note of the differences in this scenario.

Canton MO backyard flying club
West Coast Chapter
07-06-2008 11:50 PM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

What ever makes you sleep better at night

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
07-06-2008 11:51 PM
 
 
fenderstrat
Elite Veteran
Location: Aston,Pa

been flying all day 5 packs through the MINI ,3 in the HBK. charging again now for a final round before dark,both helis flying great.This getting dark at 9pm thing rules......I may also try my first stationary roll tonight,we'll see how I feel at the field

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST
07-06-2008 11:51 PM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

fender it is time to step up and get a Cellpro 10s

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
07-06-2008 11:52 PM
 
 
tryan02
rrProfessor
Location: Canton, Missouri

go get um fender!

Its 90 degrees here with 70% humidity just flew a pack and man my cellpro pack did not like it she swelled a bit mainly just the heatshrink more than the battery. Motor and battery were warm oh well what can you do other than crank up the AC and fly in the dining room.

Canton MO backyard flying club
Club President
Team No funds left.
07-06-2008 11:56 PM
HOMEPAGE  
 
 
fenderstrat
Elite Veteran
Location: Aston,Pa

its 1st on the list along with at least 4 batteries as soon as I find out about this OHIO thing,I have a meeting with my lawyer this week(thurs)then I will have a general idea what this is going to cost me.I will have a 10s by the end of july though,one way or another

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST
07-06-2008 11:56 PM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

Speaking of batteries and chargers, when i was at the night fly on the 4th I talked to a couple guys that had Rex450s as well as big nitro birds and showed them all my Cellpro. They all had expensive chargers and no one had really heard about FMA, let alone ever seen one. They all were unimpressed that it did not have a built in power supply and other than that ... they were all too Rex-snobbish to think there could be anything other than a thunder power battery and charger. One guy did have a BC6 and he was a little more open minded but not to charging over 1C. I watched him charge 3 packs and it took him like all night! I charged all 4 of mine in about the time it took to charge one of his. Now granted not all of mine were not fully drained but still, these guys are using $80 packs and waiting 70 minutes to fly them again! I told him about this guy I knew named fender and his cycle count and habits but in the end, it was like talking to a brick wall. I say too bad for them. They can go pay $3 a tank for nitro and I will fly all day with just 4 packs

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
07-07-2008 12:08 AM
 
 
tryan02
rrProfessor
Location: Canton, Missouri

My cellpro 4s says 3C it never gets there but I have never even had a bat get warm charging around 2.5 amps. But I can understand those TREX guys once you have flown the best the rest is all just cheap crap.

Canton MO backyard flying club
Club President
Team No funds left.
07-07-2008 12:12 AM
HOMEPAGE  
 
 
fenderstrat
Elite Veteran
Location: Aston,Pa

Quote 
Its 90 degrees here with 70% humidity


same here,hot as hell.its tough when the pack STARTS at 95 deg,but what can you do,thats why my last round will be around 8 when it cools down a bit,Can anyone explain why bugs go right for the eyes when you are flying,its REALLY annoying

I like it when a big beetle gets hit by the blades in idle up...POW it literally explodes

PerformancePlusRC field rep
COMPASS helis field rep
Mini Titan/SE
HBK2
Futaba FASST
07-07-2008 12:12 AM
 
 
tryan02
rrProfessor
Location: Canton, Missouri

Dab some vanilla on your eyebrows they wont want to get near ya. Imitation or regular hell fender you probably got some vanilla incense dont ya?

Canton MO backyard flying club
Club President
Team No funds left.
07-07-2008 12:48 AM
HOMEPAGE  
 
 
Gregor99
Elite Veteran
Location: Western Wa

Seems like us heli guys can be a bit more stubborn with what we think we know. When rearching the 10s recently I surprised me how few heli pilots here and at the other forum were familiar with FMA let alone know about the method it uses for auto mode. Its hyperion this and BC6 that. 1c all the way. The plane guys are a little more open to FMA and I've found far more threads about the 10s over there.

Canton MO backyard flying club
West Coast Chapter
07-07-2008 01:06 AM
 
 
MMike
Elite Veteran
Location: Holland,Mi-USA

I flew all my outside helis today.

Making progress on the 600N. Starting to get comfortable with it.

I like to fly with a wall of tall trees to make for stark contrast.

I'm concerned with losing orientation and crashing that rascal.

With a dark green wall as a background, it's easy to see.

I'm a little surprised I haven't seen this point made here before.
07-07-2008 02:22 AM
HOMEPAGE  
 
 
tryan02
rrProfessor
Location: Canton, Missouri

I fly more often to close to worry about it I can watch the servos actuate. I have a hard time using a lot of sky. But I did just move to black CF blades interesting flying when the rotorr disk is gone.

I so want a scale nitro heli!

Canton MO backyard flying club
Club President
Team No funds left.
07-07-2008 02:26 AM
HOMEPAGE  
 
 
Burlyman38
Veteran
Location: Troy,IL

Man, dont check this thread for about 4hours and all hell breaks loose.

The titan is flying very well. pitch curves
normal 0,40,60,80,100
idleup 100,92,85,92,100

Pitch at normal is -1 to +10
pitch at idleup is -10 to +10

Flew about 6packs in the mini, still getting the feel for it.
I pulled out the hk special 2200 20C pack and that did make a little difference in the heat of the pack and the motor. So for I decided to get two more packs at least a 25c rating, fan for the motor, and new blades. Ohh and put on the CC 10A BEC also. Once I get those put on then I will check things out again. Might have to borrow my mechanics ir thermometer for a few days.

As far as flying in idle up, I was using it when flying the King, so i just kept it up flying the mini. Its having the full realm of control that I like. Plus I have been toying wil the idea of a loop, or rather a UTNeon "flip"

As you guys saw in my last king vid, I was pulling up and doing some stall turns, but bailing out on the turn part But when she was straight up with the nose going vertical the little demon in the back of my mind was saying, "just keep pulling back on the cyclic, you can do it, it will come right on over"

Anyway, I will just keep on plugging at it.


TRipleB

TripleB
Flying by the street light.
07-07-2008 04:27 AM
 
 
TJinGuy
Elite Veteran
Location: Socorro, NM - USA

I have made a discovery that has been a long time coming. I am not sure who said it but it is definitely holding true on the stock Mini motor and that is that it really does run best at 85% throttle. Here is my proof ...

With a th.curve of 0-70-90-95-100 on an 11T I get 6min of run time and put back in 80%. The battery is hot (130F+) and the motor is scorching (165F+) before the fan was installed. This was with an ambient temp of 75F.

Today I set the Mini up with a th.curve of 0-70-85-87.5-90 on a 13T and even flying it hard, I only put back in about 70% after a 6.5min flight. I find that weird because the head speed is up by about 10% and it was about 90F outside when I last did this. The battery temp is still high but not as bad as before.

So either it is better to run more head speed and less collective from an efficiency point of view or the motor is much happier at 85%ish throttle. I am sure it is the later or maybe it is a combination. I also believe that running in idle up and keeping the head speed more constant and that has improved efficiency also. That way I don't ever have to ask the motor to draw a huge amount of current when the head speed is low and I request a big throttle change.

I tell you guys, everyday is a learning experience in the hobby.

- Chris

Variety+spice+life+supporting_paper_towel_industry=
King2+Rex450+Protos+Concept30
07-07-2008 05:03 AM
 
 
Burlyman38
Veteran
Location: Troy,IL

And you just have to love the response right TJ?

I got a couple of packs in today at the shop, mostly just playing around. Also had to repair the esky 2200 20c pack again, those damn little balancing wires keep vibrating loose.

TripleB

TripleB
Flying by the street light.
07-07-2008 09:00 PM
 
 
tryan02
rrProfessor
Location: Canton, Missouri

Quote 
So either it is better to run more head speed and less collective from an efficiency point of view

motors efficiency numbers are usually calculated unloaded. (bare motor shaft)So you have to get close to that point loaded. But thats lab results real world efficiency can not be determined exactly cause of different temps and loads from +/- pitch to heli weight. No 2 motors will run the same. I cant give numbers sure would like to do some testing but brushless motors will run a lot closer than brushed but its still a crap shoot. What flies good today can be sluggish tomorrow. Oh you also found out the elevation thing bet the motor was hotter and less efficient at 10,000feet with thinner air.


Quote 
or the motor is much happier at 85%ish throttle.

Dont think so Its brushless so the efficiency curve is gonna be flatter from 0 to 100%

Quote 
I am sure it is the later or maybe it is a combination.
Definitely agree its a combination it all factors get gregor a mini and let him IR temp the equipment at all states Im sure we could talk him into it.

Quote 

I also believe that running in idle up and keeping the head speed more constant and that has improved efficiency also

It depends on flying style just normal FF yes I get longer run times but do all popups for 6 min in the front yard the current from high to low draws from the collective spinning the blades at a high pitch will really load the motor and kill the efficiency. I see a difference of 10% more drain on a pack after the same amount of flight time.


Ah thats all BS I just wanted to get closer to the 30,000th post

Canton MO backyard flying club
Club President
Team No funds left.
07-07-2008 11:03 PM
HOMEPAGE  
 
 
shizack
Key Veteran
Location: Augusta, GA USA

I've working on mini-autos a little bit today. It's hard to compensate for the right drift and yaw, but I'll get there.



Link:
http://www.youtube.com/watch?v=f0ldymTf5y4

The more they overthink the plumbing, the easier it is to stop up the drain.
07-07-2008 11:11 PM
HOMEPAGE  
 
 
MMike
Elite Veteran
Location: Holland,Mi-USA

Just to boil this down into simple guidelines,

It's my understanding that you want at least 75% @ hover with a brushless motor.

Does this sound about right?
07-07-2008 11:12 PM
HOMEPAGE  
 
 
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e-E-Sky Honey Bee- Lama- Belt CP- E-Smart > Did you fly today?
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