Espritmodel.com Telemetry Radio
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Old Feb 03, 2013, 05:08 PM
What goes up, must come down
crazy1pilot's Avatar
United States, MI, Midland
Joined Sep 2009
704 Posts
I had the tube laying around, if I had 10X10mm carbon I probably would have used it.

Quote:
Originally Posted by mdrm View Post
Hi Crazy1,
why did you use tubular tubing instead of "the usual (10x10mm)" square carbon tubing - my guess is that they would be stiffer and just as light.
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Old Feb 05, 2013, 07:10 PM
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eyesonsky's Avatar
Switzerland
Joined Jul 2010
345 Posts
Great build and nice idears here guys, thanks.

I have see this cool tool for build a tri
http://lloydhassell.brinkster.net/rc...alculator.html

Maybe it exist for a QuadH?
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Old Feb 08, 2013, 04:15 AM
Serge Bezborodov
Ukraine
Joined Aug 2012
28 Posts
Quote:
Originally Posted by eyesonsky View Post
Great build and nice idears here guys, thanks.

I have see this cool tool for build a tri
http://lloydhassell.brinkster.net/rc...alculator.html

Maybe it exist for a QuadH?

If anybody known calc algo, i can create it.
It will looks good with my http://rc-calc.com
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Old Feb 08, 2013, 05:58 PM
Chasing dreams not d competion
uk
Joined Feb 2009
574 Posts
Quad etc calculator here http://www.ecalc.ch/xcoptercalc_e.htm?ecalc but i havent seen a frame sizeing version like the tricopter link above.
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Old Feb 16, 2013, 04:53 PM
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eyesonsky's Avatar
Switzerland
Joined Jul 2010
345 Posts
Quote:
Originally Posted by sergebezborodov View Post
If anybody known calc algo, i can create it.
It will looks good with my http://rc-calc.com
Nice design HTML page.
That is same calculations than http://www.ecalc.ch/xcoptercalc_e.htm?ecalc
?
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Old Feb 17, 2013, 01:51 AM
Serge Bezborodov
Ukraine
Joined Aug 2012
28 Posts
Quote:
Originally Posted by eyesonsky View Post
Nice design HTML page.
That is same calculations than http://www.ecalc.ch/xcoptercalc_e.htm?ecalc
?
i was inspired by ecalc, calc algo is very similar, but I've been tried to do more user friendly interface and features.
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Old Feb 18, 2013, 05:41 PM
WOOOOsssSSSShhHH !!
sparrow1717's Avatar
Long Island , NY
Joined May 2003
1,007 Posts
Baby H

Just finished airframe tonight......a baby H-Quad based on the 1811s so popular now.

240 mm span
170 mm MTM

Weight so far: 140 grams

Simple basswood and pine body with nylon bolts holding two aluminum cross arms. It seems very stiff over all and is easy to replace arms.

Will be adding Plush 10a's , FLIP Wii and 2S 800/1000 mah pack.

I hope 2S will be enough. I plan on being under 260gram AUW in the end.

** I'm not sure if I'm liking the zip ties for motor mounts....



Spar
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Last edited by sparrow1717; Feb 18, 2013 at 05:56 PM.
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Old Feb 18, 2013, 06:07 PM
Stop me before I build again!
United States, NY, Albany
Joined Sep 2012
1,320 Posts
Quote:
Originally Posted by sparrow1717 View Post
Just finished airframe tonight......a baby H-Quad based on the 1811s so popular now.

I hope 2S will be enough. I plan on being under 260gram AUW in the end.

** I'm not sure if I'm liking the zip ties for motor mounts....

Spar
260 on 2s should be ok, if not you can use 6x3's for pros ( if not already ).

Balance the props and you need more for motor mount to lock the motors in place or else the will work themselves right off the arm, trust me.
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Old Feb 18, 2013, 07:00 PM
WOOOOsssSSSShhHH !!
sparrow1717's Avatar
Long Island , NY
Joined May 2003
1,007 Posts
Quote:
Originally Posted by brontide View Post
260 on 2s should be ok, if not you can use 6x3's for pros ( if not already ).

Balance the props and you need more for motor mount to lock the motors in place or else the will work themselves right off the arm, trust me.
I'll grab some 6x3 next order

I'll try to build up the base of the motor mounts for more bite for zips.

It's a pain in the *ss to balance these 5in props.

Thanks
Spar
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Old Feb 18, 2013, 07:06 PM
Stop me before I build again!
United States, NY, Albany
Joined Sep 2012
1,320 Posts
Just don't use 6x3's if you plan on 3s, I don't know if it can handle it. The gemfan's are easier to balance than the HK 5x3's I used at first.
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Old Feb 18, 2013, 07:14 PM
WOOOOsssSSSShhHH !!
sparrow1717's Avatar
Long Island , NY
Joined May 2003
1,007 Posts
Quote:
Originally Posted by brontide View Post
Just don't use 6x3's if you plan on 3s, I don't know if it can handle it. The gemfan's are easier to balance than the HK 5x3's I used at first.
The props are from gothelirc. I haven't even tried to balance the 5x3x3s yet !

I'm using a magnetic type balancer and a regular pivot type balance and I can't seem to get a good solid balance.
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Old Feb 19, 2013, 06:28 AM
Registered User
Canada, ON, Merrickville-Wolford
Joined Jun 2012
835 Posts
Quote:
Originally Posted by sergebezborodov View Post
i was inspired by ecalc, calc algo is very similar, but I've been tried to do more user friendly interface and features.
Just checked out your calc again ... and it looks like your motor selection method addresses the biggest beef I had with ecalc. With so many motors being knock-offs of some original, I've found it hard to find the motor I'd like to model (cause I didn't know who made it originally). So I think I'm going to be using yours as my default from now on.

Thanks for that.

cheers,
Andrew
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Old Feb 19, 2013, 06:36 AM
Serge Bezborodov
Ukraine
Joined Aug 2012
28 Posts
Andrew, thank for response!
I'm planing to present it to all forum, currently I need fix translate errors (english is not my native lang).
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Old Feb 19, 2013, 03:12 PM
Chasing dreams not d competion
uk
Joined Feb 2009
574 Posts
Much better with all the motor choices including the dt750's.

What does it mean when it says 'For good maneuverability you need Throttle of less than 80%' ?
I obviously understand the words but i dont know if it means its got too much power after 80% or something else. It seems to say not enough power to hover or the above.

It would be good to be able to do time calcs at 50% power or even 75%. Also maybe a search feature on the motors so you dont have to scroll through the entire list each time which im finding painful to do on my phone.
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Old Feb 20, 2013, 05:04 PM
Registered User
Tulcea Romania
Joined Mar 2010
203 Posts
Folding, waterproof H quad update

Quote:
Originally Posted by eyesonsky View Post
Nice one, some news about your build?
Well here are some updates... slowly but surely. I have to buy the electronics now...
See more explanations at the page above.

http://www.rcgroups.com/forums/showt...2#post24197709

And some pictures



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