RC India
Welcome Guest, please login or register.
 
Pages: [1]   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: December 26, 2014, 10:03:54 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014




Hi All,
   I am new to RC aircrafts, and m very much interested in making a 1:12th scale SR71 using balsa wood.
   Please let me know :
      how can I make a A4 size plan to 1:12th scale plan ?
      Store where can I find balsa wood in Mumbai or online ?
      How many sheets of balsa will I require ?

Thanks,
     
Logged
 

Read
« Reply #1 on: December 26, 2014, 10:17:58 PM »
tantragna
Ashok is my name!
Plane Lover
Forum Veteran

****

Reputation Power: 4 
tantragna has no influence.
Offline Offline

City: Bengaluru
State: Karnataka
RC Skills: Beginner
Posts: 347
Join Date: Jun, 2014



Welcome onboard nit23s.. very ambitious to say the least, SR71!

Scaling a plan, the easiest way is using a graph paper, and the novel idea would be through a cad drawing. Balsa can be found in various online shops, like rcbazaar.com, rcproduct.in, etc. good luck..
Logged
 

Read
« Reply #2 on: December 26, 2014, 11:29:01 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 61 
K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 5165
Join Date: Jan, 2012



@nit23s,
SR71 in 1/12 scale
9 ft long, 55" span, 12.5 sqft wing area.
Needs many thousands of Rs worth of balsa.

If this is your first model, one word of advice:
DONT.
But if you must,
Send a pm to gajjark (ahmedabad). He usually has balsa. Good rate, excellent packing.

Better idea - try it in depron. Easier and much cheaper. Large sheets instead of sticking 3" sheets of balsa together.

(BTW what power plant are you planning to use?)
Best of luck.
Logged
 

Read
« Reply #3 on: December 26, 2014, 11:33:34 PM »
sundaram
FAN OF FPV FLYING, AERIAL PHOTOGRAPHY & MICRO RC
Plane Lover
Forum Hero

*****

Reputation Power: 38 
sundaram is working their way up.sundaram is working their way up.sundaram is working their way up.
Offline Offline

City: Gandhinagar
State: Gujarat
RC Skills: Advanced
Posts: 3407
Join Date: Nov, 2009



http://www.rcindia.org/rc-general-topics/converting-plans-to-tiled-plans/
Logged

 

Read
« Reply #4 on: December 27, 2014, 12:20:54 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



Hi!
 Thanks for your reply, Yes this is my first model, so would like to take your advice and go for a 1:6th scale which is good enough. can you sugeest me a way to convert a plan to 1/6th sale.
I have the attached plan. is it good enough to start with.

SR-71 (2).jpg
Re: SR-71 build materials details
* SR-71 (2).jpg (85.58 KB, 549x800 - viewed 2481 times.)
Logged
 

Read
« Reply #5 on: December 27, 2014, 04:01:04 PM »
tantragna
Ashok is my name!
Plane Lover
Forum Veteran

****

Reputation Power: 4 
tantragna has no influence.
Offline Offline

City: Bengaluru
State: Karnataka
RC Skills: Beginner
Posts: 347
Join Date: Jun, 2014



oh dear.. the lower the scale difference you go, the bigger the model becomes. so its like you should be doing 1:24 for halving the 1:12 scale as you intended earlier. aaand, thanks for the plan Giggle
Logged
 

Read
« Reply #6 on: December 27, 2014, 06:41:39 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



Thanks for that.
will go for 1:24th, but will this plan work.
Can u give me some idea about hw can i start?
Looking out for balsa from rcbazaar.com.
There are many sizes available, which one to go for ?
Logged
 

Read
« Reply #7 on: December 28, 2014, 01:14:37 AM »
saikrishna123456
Plane Lover
Active Member
**

Reputation Power: 1 
saikrishna123456 has no influence.
Offline Offline

City: bangalore
State: Karnataka
RC Skills: Beginner
Posts: 12
Join Date: Jan, 2014



before you dive into the balsa sizes..its better to decide what electronics you want to use..
Logged
 

Read
« Reply #8 on: December 28, 2014, 10:39:05 AM »
miginstruments
Plane Lover
Forum Hero
*****

Reputation Power: 8 
miginstruments has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 705
Join Date: Feb, 2014



Well sir building is a different thing and flying it is another. if u don't ve any prior experience of flying a plane then it ll be really difficult to save your precious model. if you are new to flying then I would suggest you to rather go for a trainer.
Logged
 

Read
« Reply #9 on: December 28, 2014, 11:41:21 AM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



Hi,
  Planning for 4 Powerful Brushless 4300KV motor 64mm EDF's, 6 Channel Transmitter and Receiver, Servos, ESC's. The plane will be flown by a experienced personnel, so no problem with that.
Logged
 

Read
« Reply #10 on: December 28, 2014, 10:03:39 PM »
shobhit17
Plane Lover
Forum Hero

*****

Reputation Power: 12 
shobhit17 has no influence.
Offline Offline

City: New Delhi
State: Delhi
RC Skills: Intermediate
Posts: 811
Join Date: Dec, 2012



Well..... SR 71.... no way.... it may well end up as a museum piece at your home and you may not want to fly it.  The fear of flying it is obvious.... the plane will fly fast.... real fast......  I am sure not many in your city will be able to handle it.  Secondly it will need something of a small runway and a good clear patch to make its approach for the landing. 

Its a bit of a highly ambitious project. 

My advice..... if you want to enjoy the hobby and fly yourself....... go for something which you can fly yourself...... start with a slower model and then graduate to a faster one.

Best Wishes.
Logged

Well I been into aeromodelling since I was in School....  and then been in the air for over 30 years.  Now looking to be back into aeromodelling full time...
 

Read
« Reply #11 on: December 28, 2014, 10:44:29 PM »
abhayf14
Heli Lover
Forum Veteran

****

Reputation Power: 8 
abhayf14 has no influence.
Offline Offline

City: gurgaon
State: Haryana
RC Skills: Advanced
Posts: 455
Join Date: Jun, 2013



 Grin sample

IMG_84372233001607.jpg
Re: SR-71 build materials details
* IMG_84372233001607.jpg (34.6 KB, 552x368 - viewed 1902 times.)
Logged
 

Read
« Reply #12 on: December 28, 2014, 10:50:50 PM »
sundaram
FAN OF FPV FLYING, AERIAL PHOTOGRAPHY & MICRO RC
Plane Lover
Forum Hero

*****

Reputation Power: 38 
sundaram is working their way up.sundaram is working their way up.sundaram is working their way up.
Offline Offline

City: Gandhinagar
State: Gujarat
RC Skills: Advanced
Posts: 3407
Join Date: Nov, 2009



Agreeing no more with Shobhit Sir would also like to point out the picture you posted is no plan but merely a photographs of cross sections from all dimensions. you would need balsa cutout plans to proceed further.
Logged

 

Read
« Reply #13 on: December 31, 2014, 01:10:31 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



Hi,

  Please can anyone provide me the balsa cutout plans for SR71 or any idea about how can i get it, need to start working on it.

Thanks.
Logged
 

Read
« Reply #14 on: January 01, 2015, 03:29:46 AM »
AnjanBabu
Aj Creations
Plane Lover
Forum Hero

*****

Reputation Power: 9 
AnjanBabu has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 576
Join Date: Jan, 2012



Get some depron and basic electronics, build a simple high winger/trainer from plans, like the Blue Baby or some FT swapables. You'll understand what it really takes to build a flight worthy model and if you still see the SR71 flame burning inside you, then you might be ready to build it.

Remember, you can't make biriyani without knowing how to cook rice. Wink
Logged

Mechatronics engineer . Hopeless realist

anjanbabu.wordpress.com
 

Read
« Reply #15 on: January 01, 2015, 09:26:05 AM »
ashok baijal
Plane Lover
Forum Hero
*****

Reputation Power: 7 
ashok baijal has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 595
Join Date: Oct, 2009



It is like learning to drive on a Bugatti Veyron.
Logged
 

Read
« Reply #16 on: January 01, 2015, 01:45:15 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



Thanks for your thoughts,
   Need solutions rather than faults.  Wink
Logged
 

Read
« Reply #17 on: January 01, 2015, 03:45:53 PM »
K K Iyer
Global Moderator
Forum Hero
*****

Reputation Power: 61 
K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!K K Iyer is a rising star!
Offline Offline

City: Indore
State: Madhya Pradesh
RC Skills: Intermediate
Posts: 5165
Join Date: Jan, 2012



@nit23s,
Looks like you misunderstood well intentioned advice.
That being as it may, here are the plans and a construction article for a 38" span SR 71 in balsa and ply.
Includes list of materials required.
It's for a glow engine, but you could convert it to electric.

http://www.outerzone.co.uk/plan_details.asp?ID=6111
Logged
 

Read
« Reply #18 on: March 29, 2015, 12:29:11 PM »
nit23s
Plane Lover
Active Member
**

Reputation Power: 1 
nit23s has no influence.
Offline Offline

City: Mumbai
State: Maharashtra
RC Skills: Beginner
Posts: 10
Join Date: Dec, 2014



where can i find good b-cut 3mm balsa sheets in mumbai?
Logged
 

Pages: [1]   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
pls post yr details here
Chatter Zone
amir 0 3353 Last post May 02, 2009, 06:55:34 AM
by amir
contact details of rc electro????
RC Outlets and Resellers
shauviks 4 4307 Last post March 22, 2012, 08:59:19 PM
by rohitgupta322
Coro 60” Chinook-2 Slope Soarer Build Details
Electric Planes
ashJR7202 10 6480 Last post September 11, 2013, 03:28:17 PM
by ashJR7202
Choice of Build Materials
Tools, Materials and Building Techniques
PankajC 16 6809 Last post September 11, 2013, 10:35:38 AM
by sanjayrai55
Micro EZB build details
Kites, Trains, Free Flight and All Others
Glidiator 3 5303 Last post August 01, 2016, 11:06:18 PM
by Glidiator