I'm a big fan and supporter of open source multirotors but this is just too impressive to pass. Too bad it is super expensive and out of reach for most hobbyists. Just wanted to share this with the community and see what they have to say about the the frame, gimbal and about DJI in general. 

Views: 18162


Developer
Comment by John Arne Birkeland on May 28, 2012 at 3:49pm

Emin: I am not talking about the type of alu. tubes you typically find in a hardware store, but high grade thin walled tubes used in R/C helicopters. I have a bunch of .90 size helicopter boom tubes from HobbyKing costing $2.99. They have a 25mm outer diameter and is 830mm long. Weight is 105grams. Plenty strong, and very rigid. Compared to the price of proper 3K carbon tubes they are practically free. I am willing to add a little weight, at least for the first prototypes.


Developer
Comment by John Arne Birkeland on May 28, 2012 at 3:52pm

Martin: If the Z15 could hold a bigger camera (it is currently built around the Sony NEX 5/7 cameras), it would be perfect.

Comment by Emin Bu on May 28, 2012 at 4:37pm

John can you please post link of those aluminium tubes..also do we need "proper" CF tubes wich are 100$ for 1m or we can use something cheeaper..i had carbon hexa from t-rex 550,600,700 boom tubes from HK,pure shit,now i am stucked with 21.5mm OD clamps and it is almost impossible to find proper CF tubes of that dimension,any sugestion?

Comment by Emin Bu on May 28, 2012 at 4:39pm

...if the Z15 cost 300 instead of 3000$ it would be perfect...

Comment by cjmccmd on May 28, 2012 at 5:38pm

FYI I use these guys http://www.goodwinds.com/ for CF tubes and other stock.


Developer
Comment by John Arne Birkeland on May 29, 2012 at 1:40am

Emin: .90 helicopter tail boom (25mm) http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=...

The irony is that those $2.99 metal booms are much better then "fake" $30 carbon fiber ones.


Developer
Comment by John Arne Birkeland on May 29, 2012 at 1:19pm

Not sure about the time frame, but looks like I will get access to a S800 + Z15 gimbal system. I'll take some detailed pictures of the design when I do.

Comment by Jonathan M on May 29, 2012 at 4:11pm

Emin,  any info on that Cinestar "clone" that you posted pictures of?  Did you make it?  How's the performance compared to the cinestar gimbal?  Is it using the same servos, pots,  and gear ratio (seems less of a ratio from the pictures)?

Comment by Emin Bu on May 30, 2012 at 1:10am

jonathan,no,i did not make cinestar clone..but i do have some sugestions if you go that way..first you should use tubes of 20mm OD,it is easer to find them than 25mm OD,be cearful with tubes from China i strongly sugest to find some German or EU shop to buy what you pay for..like this one 

http://www.x-hz.com/index.php?page=product&info=1120 

clamps are also more common in 20mm like this one

http://www.beedrones.com/products

orginal cinestar use to have savox servos but they are diferent now...this is savox servos http://www.savoxusa.com/Savox_SC1258TG_Digital_Servo_p/savsc1258tg.htm

http://www.savoxusa.com/Savox_SH1290MG_Digital_Servo_p/savsh1290mg.htm

for gears and how to calculate them go here

http://www.sdp-si.com/eStore/CoverPg/Drive_Components.htm

potentiometars

http://www.1001copters.com/lang-en/stabilised-camera-mount/59-enhan...

...so here you have all the elements,you can try,but it will never be as good as original and also  you will spend around $5oo - $8oo....

Comment by Emin Bu on May 30, 2012 at 1:16am

...also some very useful things can be found here

http://www.servocity.com/  overpriced but very good,also i payed shiping $55!!!

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