YS-I-DO

My Feedback: (-1)

If someone has a minute, could you plug this into MotoCalc and find out the amp draw?

Himaxx 2015-4100
APC 4.75x4.75
3 Cell 1500mah Kokam

Matt Kirsch

My Feedback: (21)

Motocalc gives you a 30-day trial. If you burned yours up you might consider forking over the $40 to buy it.

YS-I-DO

My Feedback: (-1)

I went one better and bought an Astroflight Wattmeter. Thanks for the help.

Matt Kirsch

My Feedback: (21)

Doesn't take too many props, and less than one LiPoly pack, for Motocalc to pay for itself... It's a whole lot less expensive than buying and trying a whole bunch of different combinations to find the right one.

Dewey2

My Feedback: (24)

well i got 3 props and half of a 3s4p pack had them sitting here for a week no check from motocalc yet motocalc is like the weights of planes listed by the manufactures its usually wrong[]

RSands

Well that's about the lamest help I've ever seen. Hey Matt, u shuck.

Hey Bro, not sure what the specifics are on th Kokam but using a TP 2100 & CC Pheonix 25, I get some funky stuff. 20amps @ ~19K RPM's with 9.5 oz. thrust, PSpeed of ~ 90 MPH and battery duration of ~ 6 1/2 minutes. Efficiency is sub 45%. Sounds like a cooker to me.

crazystix

Yeah, what's the deal? You get a cut of Moto Calc sales or something?

probro1213

Hey Matt,
If you don't know the answer,then don't give out bulls**t , so some one loses interest in the hobby. It's jacka**es like you that pull this type of stuff and hang someone out to dry........
Thanks for helping j*zz wad!

rcs36

My Feedback: (4)

I'll bet that if you ask the Bro's, you will get the answer you are looking for!

probro1213

Damn skippy he would.[>:]

Spastic

here is a free one on line, works as good as most calculator types, its p-cal [:-]

[link=http://brantuas.com/ezcalc/dma1.asp]P-cal at flyDMA[/link]

YS-I-DO

My Feedback: (-1)

Users viewing this topic: clsimons, crazystix, cropdusterdave, Dave763, Felix21685, gwsdrgnfly, Just Plane Nuts, latch66, PAR, prophanger1, rcs36, RSands, UPTater, YS-I-DO


WOW!! Are we having a Bro Reunion??

"Please resist the urge to curse, flame, degrade, insult or embarrass someone in your post."

Matt, you embarrassed me with your original reply. Should I go to a moderator......wait a minute, you are a moderator!!! How does that work?? Oh, I know. You aren't trying to get "free advertising" for your one-man kitting business. But you did stick up for Motocalc like a puppet on a string. I think Crazystix is on to something. Just out of curiosity...how much does one need to spend for advertising on this site before they gain a little respect?

rcs36

My Feedback: (4)

Just Bro's looking out for each other!

Dave763

My Feedback: (1)

Matt he said please.....oh well....I guess those RCpuke moderators are way too busy to help.

Dave763, Pro Bro 723

WrenWright

I rescend my comments on this one.

Matt Kirsch

My Feedback: (21)

Jeez, I thought suggesting that you take advantage of the FREE 30-day Motocalc trial WAS helping... People don't necessarily know about that offer. Wow, talk about a slap in the face.

For the record, I don't even own a copy of Motocalc. It's not installed on my computer. I haven't felt the need for it, since I only use motors from manufacturers who provide application charts and example setups. You wanted someone to run the numbers in Motocalc for you, so you obviously find value in the software. All I did was suggest that you should purchase a copy. How was ANYTHING I said embarrasing to anyone?

I notice that none of you who jumped down my throat gave him an answer, either.

If any of you have a problem with how ANYONE on this forum behaves, by all means, report it.

William Robison

My Feedback: (3)

All:

I've just wiped out several posts in this thread, where people were jumping to false conclusions and generally not behaving nicely.

MotoCalc is not the only one available, there is also ElectriCalc, and as Spastic notes, P-Cal is a freebie.

Additionally, as Matt himself said, many makers have their own charts on their web sites.

Now be nice, or we can close the thread. Your choice.

Bill.

rx8

Where's the link for the 30 day trial( motorcalc)?

Ron

William Robison

My Feedback: (3)

Rx:

[link=http://www.motocalc.com/]MotoCalc[/link]

Click on "Downloads" for the trial.

Bill.

orectolobus

Check out this online calculator.

[link=http://www.tdmsoftware.com/TDMmodels/TDMmtrcalc.asp]Online Motor Performance Calculator[/link]

theHarpmanDan

Hello all,

Here is what he wanted...19 amps, 8.3oz thrust, 82mph prop speed.
I bet you would be better off with a gearbox...1.8 to 1, or 2 to 1 with a 7x3 - 7x5..

with your motor/battery , a 1.8 to 1 gb, and a 7x3,motocalc claims 18amp draw, 16oz. thrust, 38.6mph prop speed,927 RofC.

same as above w/6x3 gives 15.6amp draw, 15oz. thrust,48.6 propspeed, 919 RofC.

It is obvious how much better it will do with a gearbox! Plus flight times go up. Unless this is a pylon racer, slap a gearbox on it. If you need some more numbers from motocalc...just ask.

I feel sharing info is a big part of learning more about what you already know.

theharpmandan.

lmao