vova reznik
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  • Miami, FL
  • United States
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Latest Activity

Tipu commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"96g for 4500mah ?? Why don't yoiu go for Geb8043125. I am buying them, awesome weight to power ratio."
Mar 31
Tommy Larsen commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"This Enerpower is 96.2 grams so the weight/power ration is not that good."
Mar 31
John Rambo commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"For those looking for higher C ratings, EnerPower 26650 4500mAh is something closest one can get: http://lygte-info.dk/review/batteries2012/EnerPower%2026650%204500mAh%20(Dark%20blue)%20UK.html"
Mar 31
Pedals2Paddles commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Many of these are .5C to 1C but are incredibly lightweight. Too bad the low C rating rules them out as flight batteries on a multirotor. I suppose what gives them the low C rating is also what makes them so lightweight."
Mar 27
Tipu commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"It seems a new vendor coming with GEB8043125  like batteries. its www.vipower.biz and they are offering VIP8045120 3.7V 6000mAh cells. specs are attached. Anyone know it ?"
Mar 27
Tipu commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"This is snap from excel file,  comparison of few batteries. Cant upload actual excel file. :( Price of GEB and Melasta cells are on MOQ 500 (Minimum Order Quantity) @ vova reznik If this snap is after 95 cycles, Really not bad. Very…"
Mar 25
vova reznik commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Attached is a charge/discharge graph a single GEB 8043125 cell.  After 95 cycles, the battery has lost 13.75% of its capacity. This is ideal. You have to take into account the interaction between cells in a pack, and also…"
Mar 25

Moderator
Sgt Ric commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Of course Vova would have them first... He is RangeVideo!"
Mar 25
Pedals2Paddles commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Where did you get the RVprops?  I just did a google search and they do not appear to exist...."
Mar 25
Tommy Larsen commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"@Tipu: I found out that the #320 is 40grams, so still good ratio :) I sent you a PM regarding the other list."
Mar 24
Tipu commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"@ Tommy Larsen  I am hunting high energy capacity batteries too, I did same thing and found #320 Cells at highest capacity. but manufacturer confirmed that this mentioned weight is wrong on website. Though, I am Talking to different…"
Mar 24
vova reznik commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Or an x8 configuration "
Mar 24
vova reznik commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"The Tarot prop might be more efficient at lower RPM- if you are using a smaller battery and thus less weight."
Mar 24
Daniel Allen commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"Yeah that's what I was talking about. That Tarot (T-motor) style prop is a bad design, even though it looks sweet. The RV prop is more like the DJI style, which is better."
Mar 24
vova reznik commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
""I will test to see what happens at 50 cycles, but II would be OK with 50 cycles for a record breaking battery. I could do a long duration flight each week, for a year. That much flying is just realistic...   How often do you need to break…"
Mar 24
Tommy Larsen commented on vova reznik's blog post Getting to 100km, with a big help from GEB 8043125.
"I imported this list into Excel, made a formula to divide mah/grams for every battery and found that the one at number 320 has the best ratio :) http://www.gebattery.com.cn/product/polymer-li-ion-battery.html "
Mar 24

Profile Information

About Me:
VOva
Please tell us a bit about your UAV interest
rangevideo.com
Hometown:
moscow

Vova reznik's Blog

Getting to 100km, with a big help from GEB 8043125.

Posted on March 23, 2014 at 9:00pm 29 Comments

Today we decided to finally get out of the office and go fly !

I wanted to test a new pack which has been sitting on my desk for a while, a 14.8V 4s4p 24400mAh. 

This is a different type of lipo , with a energy density of 262 Wh/kg. 

Simply, this battery has an energy density which is x 1.62 of regular lipo (160 Wh/kg), which can help you get long flight…

Continue

APM 2.5 , scary first flight but all is good.

Posted on July 8, 2013 at 10:00pm 3 Comments

I never do a range check. But when I do, I forget to take it out of range check mode before takeoff.

APM2.5 saved the day and loitered…

Continue

Comment Wall (3 comments)

At 10:09pm on June 23, 2009, Matt Strydom said…
Hi there Vova
I've been looking at the website and the video showing the on screen displey. I'm new to this so please forgive me for asking stupid questions....but what do I need to be able to fly an RC plane with video feed such as this. I'm not looking at doing autopilot as yet just pure fun flying.
Also what is the range on the feedback between me and the aircraft.
As I say I'm new to this put I really want to learn more about this stuff...I love it!!!
P.s. Do you know if rangevideo will do shipment to Australia?
At 6:46am on June 8, 2012, Demetrius Armstrong said…

As we say in the US Navy Bravo Zulu Vova! 

At 7:42am on February 6, 2013, herve pellarin said…

hi vova,

congrats for this wing, i was wondering if you had an idea when it ll be back in stock on rangevideo website, and what would be the global cost for send one to france?

thx for your time

best regards

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