RC India
Home Help Calendar Login Register
Welcome Guest, please login or register.
 
Pages: 1 2 [All]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: January 16, 2014, 04:46:21 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013

friends what prop size do u sujest for 800g electric plane(suggest me the motor's kv too)
Logged
 

Read
« Reply #1 on: January 16, 2014, 05:29:53 PM »
Nithinraj Kotian
Living in my Dreams
Plane Lover
Forum Hero

*****

Reputation Power: 6 
Nithinraj Kotian has no influence.
Offline Offline

City: Mangalore and Dubai
State: Karnataka
RC Skills: Beginner
Posts: 592
Join Date: Aug, 2011
Emax CF2822 1200KV  prop: 9*5, 10*5
Logged
Life is Simple Don't Make it Complicated
 

Read
« Reply #2 on: January 16, 2014, 05:35:47 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
Try out this link:
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=100_93&products_id=391
 Hats Off
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #3 on: January 16, 2014, 05:54:08 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
how about a 1450 kv motor and 7*4 inch
Logged
 

Read
« Reply #4 on: January 16, 2014, 05:55:45 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
will be 1450kv and 7.3 effective
Logged
 

Read
« Reply #5 on: January 16, 2014, 06:00:22 PM »
Nithinraj Kotian
Living in my Dreams
Plane Lover
Forum Hero

*****

Reputation Power: 6 
Nithinraj Kotian has no influence.
Offline Offline

City: Mangalore and Dubai
State: Karnataka
RC Skills: Beginner
Posts: 592
Join Date: Aug, 2011
go for 8x6 slow fly prop.
Logged
Life is Simple Don't Make it Complicated
 

Read
« Reply #6 on: January 16, 2014, 06:07:04 PM »
manojswizera
Plane Lover
Forum Hero

*****

Reputation Power: 18 
manojswizera has no influence.
Offline Offline

City: AURANGABAD
State: Maharashtra
RC Skills: Beginner
Posts: 1336
Join Date: Oct, 2011
Instead of going for 1450 kv.
go with CF2822-1200 kv and 9inch prop.
Logged
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.
 

Read
« Reply #7 on: January 16, 2014, 06:17:25 PM »
Nithinraj Kotian
Living in my Dreams
Plane Lover
Forum Hero

*****

Reputation Power: 6 
Nithinraj Kotian has no influence.
Offline Offline

City: Mangalore and Dubai
State: Karnataka
RC Skills: Beginner
Posts: 592
Join Date: Aug, 2011
@swizera: he already brought 1450kv motor i guess  Head Scratching
Logged
Life is Simple Don't Make it Complicated
 

Read
« Reply #8 on: January 16, 2014, 06:24:38 PM »
manojswizera
Plane Lover
Forum Hero

*****

Reputation Power: 18 
manojswizera has no influence.
Offline Offline

City: AURANGABAD
State: Maharashtra
RC Skills: Beginner
Posts: 1336
Join Date: Oct, 2011
If he already bought , then its his wish  Smiley
I doubt that motor can give enough thrust .
Logged
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.
 

Read
« Reply #9 on: January 16, 2014, 06:36:05 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
any possibility to increase trust ?like increasing the prop size
Logged
 

Read
« Reply #10 on: January 16, 2014, 06:38:49 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
i mean without changing the 1450kv motor
Logged
 

Read
« Reply #11 on: January 16, 2014, 06:42:20 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
i got a 1450kv motor and 8.4 inch prop.does it can give me enough trust to lift 800gm weight
Logged
 

Read
« Reply #12 on: January 16, 2014, 06:49:29 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
help me pls
Logged
 

Read
« Reply #13 on: January 16, 2014, 06:54:57 PM »
Nithinraj Kotian
Living in my Dreams
Plane Lover
Forum Hero

*****

Reputation Power: 6 
Nithinraj Kotian has no influence.
Offline Offline

City: Mangalore and Dubai
State: Karnataka
RC Skills: Beginner
Posts: 592
Join Date: Aug, 2011
sell your 1450kv motor and buy Emax 1200kv motor from Rcdhamaka.  Hats Off
Logged
Life is Simple Don't Make it Complicated
 

Read
« Reply #14 on: January 16, 2014, 07:02:30 PM »
rastsaurabh
Plane Lover
Forum Hero

*****

Reputation Power: 19 
rastsaurabh has no influence.
Offline Offline

City: Noida
State: Haryana
RC Skills: Intermediate
Posts: 1558
Join Date: Mar, 2012
Battery is 2S or 3S ??
Logged
 

Read
« Reply #15 on: January 16, 2014, 07:04:38 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
any more ideas
Logged
 

Read
« Reply #16 on: January 16, 2014, 07:05:41 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
Khan007 firstly ... Know the model ... Is it a glider ? Scale ? Jet ? 3D .... This will decide what thrust and what speed is required to keep it airborne ... And then finalize the power config ...
Logged
 

Read
« Reply #17 on: January 16, 2014, 07:07:13 PM »
manojswizera
Plane Lover
Forum Hero

*****

Reputation Power: 18 
manojswizera has no influence.
Offline Offline

City: AURANGABAD
State: Maharashtra
RC Skills: Beginner
Posts: 1336
Join Date: Oct, 2011
Khan , you have place order or you have it with you.
If you have just place order than , you can request them to change as they cost same.

If you had it with you , then no choice , make smaller plane with weight less than 500 gm and use on it.

If you really want good thrust of nearly 800 gm than go with other motor. CF2822 will also not give you 800 gm thrust , but can fly your plane.
Logged
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.
 

Read
« Reply #18 on: January 16, 2014, 07:07:25 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
its a 2200 mah 3s battery
Logged
 

Read
« Reply #19 on: January 16, 2014, 07:16:27 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
Like for a 800 gms  jet u will need a small prop is it has high wing loading and needs speed more than thrust to keep it air borne ..on the other hand if its something Like a slow stick u will need thrust and not speed so need a bigger prop ... And all this will dictate the motor battery ....
Logged
 

Read
« Reply #20 on: January 16, 2014, 07:29:13 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
this the plane photo 36inch wing span
Photo2293.jpg
Re: prop size help
* Photo2293.jpg (50.01 KB, 600x800 - viewed 458 times.)
Logged
 

Read
« Reply #21 on: January 16, 2014, 07:33:15 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
Done this from some plan ? Wings don't seem to have aerofoil so won't have lift not a it will be tough getting it airborne as will require a large high pitch prop coz its only speed thats going to keep at aloft ..... Correct me if I am wrong ....
Logged
 

Read
« Reply #22 on: January 16, 2014, 07:38:06 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
it got aerofoil wing
Logged
 

Read
« Reply #23 on: January 16, 2014, 07:43:28 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
but its made from aluminium rod ,and coro plastic board,thats why it look like that
Logged
 

Read
« Reply #24 on: January 16, 2014, 07:47:58 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
This model is similar to Moss glider model i build. Only the wingspan is different. Mine was around 40" and wasn't having airfoil shape. I used 1200KV motor for it with 20A ESC and a 2S 1000mAh battery and GWS 9X5 prop.
I don't know why your model is so heavy... 800gm... since, it seems to be a slowstick...
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #25 on: January 16, 2014, 07:49:51 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
I too used coroplast for wingspan and carbon fibre rod of 12mm square cross section. AUW of my model was approx. 500gm... Not above...
 Hats Off
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #26 on: January 16, 2014, 07:52:54 PM »
manojswizera
Plane Lover
Forum Hero

*****

Reputation Power: 18 
manojswizera has no influence.
Offline Offline

City: AURANGABAD
State: Maharashtra
RC Skills: Beginner
Posts: 1336
Join Date: Oct, 2011
just my sujjestion.
you can add small 7 -8 inch dihedral, on both sides. That will increase the wing area, and will glide more. will also need less power, increase stability.
Logged
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.
 

Read
« Reply #27 on: January 16, 2014, 07:53:36 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
bro the coro board is so flexible so i used some wooden rods-taken from coconut plant -and the battery is 2200mah battery.the total aeroplane weight is around 700g
Logged
 

Read
« Reply #28 on: January 16, 2014, 07:59:59 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
does that means i need to bend by fuselogue
Logged
 

Read
« Reply #29 on: January 16, 2014, 08:00:30 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
After adding these rods i am sure your wing would flutter... adding some dihedral would definitely give a good glide and adds to stability as well...  
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #30 on: January 16, 2014, 08:02:46 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
how to add dihedral on my wings
Logged
 

Read
« Reply #31 on: January 16, 2014, 08:03:34 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
i dont know anything about dihedral
Logged
 

Read
« Reply #32 on: January 16, 2014, 08:05:18 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
Adding a pic
DSCN1940.jpg
Re: prop size help
* DSCN1940.jpg (50.85 KB, 800x600 - viewed 585 times.)
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #33 on: January 16, 2014, 08:12:31 PM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
nice
Logged
 

Read
« Reply #34 on: January 16, 2014, 08:16:03 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
I hope now its fine with you... This model flies very nicely... Thumbs Up
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #35 on: January 16, 2014, 08:17:12 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
@utkarshg 13 ... I agree a poly dihedral will add to stability and will also decrease wing loading
Logged
 

Read
« Reply #36 on: January 16, 2014, 08:17:48 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
Go ahead Mr. Khan ....
Logged
 

Read
« Reply #37 on: January 16, 2014, 08:19:45 PM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
One more thing I would suggest is don't use coconut sticks ... Cf rods are ideal ... But if not use plastic electrical casing cover it works best and is light
Logged
 

Read
« Reply #38 on: January 16, 2014, 08:38:23 PM »
utkarshg13
Plane Lover
Forum Hero

*****

Reputation Power: 11 
utkarshg13 has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Intermediate
Posts: 982
Join Date: Jul, 2013
Plastic casings.... Thumbs Up Thumbs Up Thumbs Up good idea. Even i would use these...
 Hats Off
I think balsa sticks could also be used and are much cheap. Available on Rcbazaar...
Logged
"If you were born with wings, do every thing you could, for flying."
 

Read
« Reply #39 on: January 17, 2014, 09:31:30 AM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
Balsa sticks are expensive compared to these electrical casing ... One more thing which I use is pine wood sticks u can get those cut in 4 mm  and 6 mm from a saw mill if u have any close by ... Even those are light and tough ...
Logged
 

Read
« Reply #40 on: January 17, 2014, 10:29:25 AM »
Nithinraj Kotian
Living in my Dreams
Plane Lover
Forum Hero

*****

Reputation Power: 6 
Nithinraj Kotian has no influence.
Offline Offline

City: Mangalore and Dubai
State: Karnataka
RC Skills: Beginner
Posts: 592
Join Date: Aug, 2011
or you can use light wooden corner beading's which are easily available in local hardware shop. Hats Off
flat beading.jpg
Re: prop size help
* flat beading.jpg (8.53 KB, 500x369 - viewed 453 times.)
This post has 1 more images(s)/attachment(s). Please login or register to view them.
Logged
Life is Simple Don't Make it Complicated
 

Read
« Reply #41 on: January 17, 2014, 10:39:47 AM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
So back to your question mr khan .... If u can reduce the weight if not let's see about power config...
Let's say we give 1:1 thrust so we need around 800 gms  of thrust ... Let me see what u have ....
.
Logged
 

Read
« Reply #42 on: January 17, 2014, 10:43:10 AM »
manojswizera
Plane Lover
Forum Hero

*****

Reputation Power: 18 
manojswizera has no influence.
Offline Offline

City: AURANGABAD
State: Maharashtra
RC Skills: Beginner
Posts: 1336
Join Date: Oct, 2011
Quote from: khan007 on January 16, 2014, 08:02:46 PM
how to add dihedral on my wings
Cut 7 inch coro sheets with same chord as your wings. Take small 4 pieces of cycle spokes approx 5 cm. Bend them at an angle, you need for your dihedral.
insert the spoke in coro flute at the leading and trailing edge of your wing, fix it will CA.
put the other end in dihedral part of coro, fix again with CA.  

Call if u didn't get clear.
7768069805
Logged
Russ-40 Trainer, Mr.moss, Pushler, Skysurfer, Mugi , F-22, Red swan, Xtra-300, redfury, flying mantaray.
 

Read
« Reply #43 on: January 17, 2014, 10:44:22 AM »
docnayeem
Plane Lover
Forum Hero
*****

Reputation Power: 1 
docnayeem has no influence.
Offline Offline

City: Kolhapur
State: Maharashtra
RC Skills: Intermediate
Posts: 603
Join Date: Nov, 2013
Re:
You have a 1450 kV motor I guess its emax and two cell ( please specify ) if its two cell then 8*4 prop that u have and this motor will hardly give y a thrust of around 500 gms ... Its is OK but might not be sufficient if its a 3 cell motor then we will get a thrust of 1.8 kgs  that's great enough ...
Logged
 

Read
« Reply #44 on: January 17, 2014, 02:08:00 PM »
rcrcnitesh
Plane Lover
Forum Hero

*****

Reputation Power: 22 
rcrcnitesh barely matters.rcrcnitesh barely matters.
Offline Offline

City: Chennai
State: Tamil Nadu
RC Skills: Beginner
Posts: 2154
Join Date: Jul, 2013
which 1450kv motor Huh?
Logged
Maker | Aeromodeller | Teenager
 

Read
« Reply #45 on: January 18, 2014, 12:41:42 AM »
khan007
Plane Lover
Senior Member
***

Reputation Power: 3 
khan007 has no influence.
Offline Offline

City: malappuram
State: Kerala
RC Skills: Beginner
Posts: 136
Join Date: Mar, 2013
Mystery A2208-14 1450kv
Brushless Outrunner Motor
Logged
 

Pages: 1 2 [All]   Go Up
RC India  RC Equipments  Electric Power  Topic: prop size help
 « previous next »
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Working of Motors : what is the significance of KV to prop size
RC General Topics 		rcforall 8 15677 Last post September 01, 2009, 11:45:56 PM
by mpsaju
Where can I buy dubro or topflight prop balancer and prop reamer from India?
Tools, Materials and Building Techniques 		mickey 4 5215 Last post February 22, 2012, 12:41:48 PM
by rcpilotacro
What is the max prop size i can use?
Multirotors 		ghoshatanu56 5 2525 Last post September 22, 2015, 10:09:21 PM
by ghoshatanu56
Need help to finalize the motor kv, esc, lipo, based on prop size, thrust
Electric Power 		smadaan 8 6661 Last post August 19, 2017, 09:42:06 AM
by srivamsircenthusiast
Master Airscrew prop 12x 8 size for sale
For Sale 		pramod karjule 0 622 Last post October 12, 2018, 04:24:45 PM
by pramod karjule
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Simple Audio Video Embedder 		Realized by Systalent | XHTML | CSS