Mr N.
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Mr N.'s Discussions

Hybrid 4 stroke multirotor

Started this discussion. Last reply by zhangqi Jul 30. 7 Replies

Hello there. First of alI, I apologize for my poor written English skills. Over the past couple of days I 've been trying to get my mind around this interesting project I accidentally came across…Continue

Drone for use in agriculture and search and rescue

Started this discussion. Last reply by Sam Halderman Feb 23, 2011. 2 Replies

First post here on this forum. I'm writing to you from Serbia.  I have an opportunity to  enroll in project funding here in Serbia for innovative projects. I wanted to introduce agricultural and…Continue

 

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Latest Activity

zhangqi replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"My viewpoint: The Honda GX25 and GX35 can't be used in hybrid multirotor, we have tried it, the power is not enough, GX25 is 1hp and GX35 is 1kw, and now the most efficient multirotor lift power ratio is about 8~10, so even the efficiency from…"
Jul 30
Rob_Lefebvre replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"Yes, too bad.  It's fairly trivial to get 100 hp/L out of a modern 4 stroke, which would mean this thing should be making 3.5hp.  Up to 200 hp/L is possible for a high performance engine, which would return 7hp here.1.3hp is just…"
Jul 28
Jose Luis Cortes replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"Rob,  For me GX25 or GX35 are too far from required performance. A modern 4t engine should do 5hp with 35cc @ 10000rpm (with the same BMEP than a CRF250 or similar), but it is multiply x5 the current Honda engines performance. I see there are…"
Jul 28
Rob_Lefebvre replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"I'm also interested in the Honda 4-strokes, but also believed they don't make a lot of power.  The factory power rating I think is only about 1hp.  But I'm not sure what it can do with some tuning.  These engines are…"
Jul 28
Jose Luis Cortes replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"I had not seen this. I find it strange that the GX25 engine pulls enough power to keep that multirotor in flight, but I would like to know more about this project. Mr N.: Do you know something about this company?"
Jul 28
Jimmy Oliver replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"Can't this be done with a weed wacker motor (23CC) a generator and a charger controller? Maybe a solar charge controller? If the input power can exceed the MAH usage I assume the battery would stay topped off and then when the gas runs out you…"
Aug 7, 2016
Jimmy Underhill replied to Mr N.'s discussion Hybrid 4 stroke multirotor
"I don't have very much to offer except that from my research you will get approximately 50% efficiency at best from the conversion, so for example if your gas engine is 2hp you should expect 1hp in electrical output. In regards to the U12 motor…"
Mar 24, 2016
Mr N. posted a discussion

Hybrid 4 stroke multirotor

Hello there. First of alI, I apologize for my poor written English skills. Over the past couple of days I 've been trying to get my mind around this interesting project I accidentally came across while researching gas/electric powered multirotor platforms. Apparently ,these guys are working with the Border Patrol on replacing RC helicopters. This thing is a 4 stroke. It is said that the machine will fly 65 minutes without any batteries onboard with a 4lb payload. I guess this was the test…See More
Mar 19, 2016
Mr N. commented on Mr N.'s blog post Serbia Floods
"Thank you Morli"
Jun 18, 2014
Mr N. posted blog posts
Jun 18, 2014

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Morli commented on Mr N.'s blog post Serbia Floods
"Thank you N for keep is appraised. Appreciate very much your work in field and here."
Jun 18, 2014
Mr N. replied to Mell's discussion Can not connect to ardupilot
"Did you get it to work ..I have the same issue but can't seem to resolve it"
Dec 4, 2012
Mr N. commented on George's blog post A year of research - From absolute noob to my first aerial video.
"Hello Geroge Great story...I too have a similar story to tell. Now I have a successful AP business using the same oktoxl you have with AV200 360 camera mount.  I have some suggestions as to what you need to do to get rid of…"
Jul 9, 2012
Sam Halderman replied to Mr N.'s discussion Drone for use in agriculture and search and rescue
"Take a look at the Yamaha R-Max helicopter.  They use them for agricultural spraying in Japan.  There also have been unmanned versions flying.  NASA and several universities have flown them."
Feb 23, 2011
MikeInFrance replied to Mr N.'s discussion Drone for use in agriculture and search and rescue
"I have no interests with the below companies or people, but I think they are showing us the right way: Made in Poland http://www.trigger.pl/pteryx/Pteryx-UAV.php Made in Sweden http://www.smartplanes.se/ Made in…"
Feb 23, 2011
Mr N. posted a discussion

Drone for use in agriculture and search and rescue

First post here on this forum. I'm writing to you from Serbia.  I have an opportunity to  enroll in project funding here in Serbia for innovative projects. I wanted to introduce agricultural and search and rescue UAV's in Serbia mainly for improving agriculture and introducing some useful aspects of UAV technology to Civil defense and general public as well since this is unheard of here. Could you tell me about some of the rtf options you know about that might be able to do the job similar to…See More
Feb 23, 2011

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Serbia Floods

Posted on June 18, 2014 at 12:00pm 2 Comments

Hello there…
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