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Latest Activity

Ravi commented on Graham Dyer's blog post Prop testing on a 'copter
"very useful test for most fliers. i wish there was a full data bank of all commonly available props. using efficient prop is like getting free extra thrust. a simple excel sheet showing various figure would be enough to start with. flutter (vertical…"
Ravi replied to Oliver Volkmann's discussion Configuring "A9" on APM2.5 for Camera Trigger with StratoSnapper
"i am using a micro servo to push the shutter through the APM RC8 OUT channel. i use the DO_DIGICAM_CONTROL command of mission planner to press the shutter automatically when the desired waypoint is reached. it is working fine now on a Hero 2 camera."
Apr 10
Ravi commented on Nicholas Witham's blog post Game of Clones...........
"i noticed in APM clones from HK,, they were continuing with the same 500mA fuse that was supposed to be replaced by a Tiny 1100mA fuse."
Apr 9
Ravi commented on Nicholas Witham's blog post Game of Clones...........
"whatever guys it is not worth saving $100 to buy a clone. they do not support any issues with hardware flaw. remember how 3DR supported replacement of a 500mA Tiny fuse which was supposed to be 1100mA fuse. 3DR sent me a $1 replacement fuse by $40…"
Apr 9
Ravi replied to Detlef's discussion APM - Phantom Wing FX-61 Parameter Files in the group FX-61 Phantom
"i think that is a good idea. even with 15mm throw FX61 is very sluggish in FBWA mode. can u also tell what are your min/max  PWM values for aileron and elevator. you can chk this from mission planner in the radio calibration tab."
Apr 6
Ravi replied to theclam's discussion Pixhawk & Sonar
"were u able to get maxbotic 1240 sonar work on pixhawk. i connected the three wires form sonar to ADC3.3 port with signal pin to pin 13 (4) and GND to GNDand Vcc to Vcc. but the sonar does not works."
Apr 6
Ravi replied to Detlef's discussion APM - Phantom Wing FX-61 Parameter Files in the group FX-61 Phantom
"yes you are right, but when the winds are zero i cannot launch it with zero throttle. i need 5km/hr winds to launch it with zero throttle."
Mar 21
Ravi replied to Detlef's discussion APM - Phantom Wing FX-61 Parameter Files in the group FX-61 Phantom
"so that means i can launch it in auto mode and immediately after takeoff can switch back to manual mode. my launch man had his fingers hurt couple of times. TKOFF_THR_DELAY can help avoid this."
Mar 21

Profile Information

About Me:
Very eager aeromodeller. I find UAV is the ultimate fruit of all the hard work you do while making those miniature r/c planes and the heartbreak you get when they crash.
New Delhi

Ravi's Blog

counter rotating motor and prop set

Posted on October 24, 2011 at 10:08pm 13 Comments

this is a wonderful counter rotating BLDC motor and prop set ideally suited for planes between easystar and skywalker because of small footprint for the power equivalent 30xx size motors. it delivers 270 watts with 3S Lipo. the mounting would be bit tricky though. never tried but would order soon. very useful because prop diameter has to be restricted on pusher prop aircrafts with tail boom below the prop. once i get mine would put the performance parameters on the same blog. available at…


rotary engines for UAV

Posted on October 15, 2011 at 7:24pm 5 Comments

hi friends, on 14 October 2011 there was an exhibition organized by some 20 UAV manufactruing companies in New Delhi, India. It was wonderful to have something like this in India. The technology dispalyed was amazing. there were fixed wings and rotary winged UAV's. The show was won by this twin cylinder rotary engine designed for UAV's. The manufacturer claims to having nil vibrations in the engine. a very important issue for IMU's in the autopilot.  beautiful engine with circular cross…


Aluminum Housing for APM

Posted on September 30, 2011 at 5:30am 8 Comments

hi friends, whenever we fly in automode using APM there is always some chance of a bad crash. we do lose some expensive equipment. APM is quite expensive for almost $400 and not counting the mid night hours that go in debugging. so i have worked on a aluminum APM housing which is quite strong with 1.5mm thickness and is…


some good hardware for easystar fliers

Posted on August 12, 2011 at 8:06am 5 Comments

there is some good hardware combinations for easystar FPV. this is motor 2835-2200KV, a 6x5 propeller and a beautiful 35mm aluminium spinner form www.leadershobby.com. a lawmate 1.2Ghz tranmitter and a lawmate camera from www.hobbywireless.com. everything is working verywell with this combination. a 2200mAh zippy battery from www.hobbyking.com. just some information i…


Comment Wall (4 comments)

At 1:16am on July 23, 2008, jitendra gurjar said…
hi r u in uav s too . my mail id is jtendra.gurjar2gmail.com
At 10:50pm on July 24, 2008, Ravi said…
yes i am very much into model aeroplanes and trying to obtain a navigatin system for my project. i do not intend to built a system from scratch but use commercially avaialble systems. i think i am going in for micropilot with navigation, attitude, alt hold and telemetry. where r u located, i am in south delhi. ravi, myemail is ravinewdelhi@yahoo.com
At 10:41am on October 25, 2008, SUNEEL KAPUR said…
i have recently come to delhi. our interest seems to be same. call on 9717848302
At 10:06pm on September 1, 2011,
John Arne Birkeland

Hi Ravi. I do not know the Thomas Scherrer UHF system, but if the PWM sum is a standard 8 channel signal it should work. Just remove the propeller for safety and try and see if it works. It's not like anything will explode or anything if they aren't compatible. :)

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