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Post by azertyben on Nov 2, 2011 19:04:41 GMT 1
Hi all, I'm a beginner and after a quick search in the batteries topic I didn't found a real answer to my question.  In fact I own 3 lipos from my buggy RC. Those are really powerful and I would like you to tell me if I could use them in my Hobby Zone SC LP (with some mod in the battery box) I know that the weight is an important issue but since some people add a camera or other stuff on the plane, why couldn't I add 200g to the battery? Please explain why each of those lipos are/aren't suitable to my HZ SC LP: (stock lipo 3S 1300mAh 15c --> weight:102g)1) Volz 2S 2700mAh 25c --> weight: 167g 2) Turnigy 3S 3300 mAh 30c --> weight: 305g3) Red Dragon 3S 5000mAh 30c --> weight: 348gWhat will be the impact of a 250g more? will it run with my 2S lipo or it will damage esc? Will in take off? Will it be more stable on higher wind? I hope this post will also help other people in making their battery choice. Thank you in advance |
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Post by toff on Nov 2, 2011 23:30:55 GMT 1
The weight isn't really an issue for the SC, just the physical size of the batteries themselves.
The stock SC will happily run on 3s lipos, but for that size, you will have to REALLY mod the battery box. Biggest I've had in is a 2200mah 3s, and thats a tight fit!
It will run on 2s, but so slow it's not worth it.
It will take off, it will be a bit more stable in wind (as a beginner...... DO NOT FLY IN ANYTHING MORE THAN 10 mph!), but will also be faster due to carrying more weight.
anyone else??
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Post by Dave B. on Nov 2, 2011 23:35:43 GMT 1
I just finished the battery box modification described here on the forum. It is very easy to do and requires few tools.
It greatly enhances the capacity of batteries on the aircraft, much more room and also the stock batteries fit much easier and with less strain on the wires.
A "must do" mod in my book!
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Post by flydiver on Nov 3, 2011 1:02:41 GMT 1
The answer you aren't looking for it the heavier it is, the harder it crashes.
A heavier plane will handle wind better but a new flier does not want to venture there anyway as they are the 'weak link'.
The 2S is worthless for this application.
The other 3S would work (IF they fit, be sure to MEASURE FIRST) but with that much additional mA and C-rating you may be upping the potential amp draw of the motor enough to put the ESC at risk. It's a pretty flaky device anyway.
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Post by Dillzio on Nov 3, 2011 10:05:49 GMT 1
There are lots of people that use the zippy 2200mah 20C batteries and that's about as big as you'd want to go, but you really want to learn with a lightweight battery to start with. With the bigger battery the plane will have less lift, and will need more room to land.
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Post by azertyben on Nov 3, 2011 20:56:37 GMT 1
Thank you for your answers. I didn't thought that a higher weight = higher risk of damage on landing even when it crashes slightly. I don't want to burn my esc neither due to the high "C" combined to a high "mAh". Thus I will consider buying a Turnigy 2200 mAh to have the best flight experience with this model. I haven't crashed yet since I trained myself on Phoenix simulator before the first flight. It really helped  |
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Gohmer
Squadron leader
Posts: 113
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Post by Gohmer on Nov 4, 2011 23:28:42 GMT 1
1000mah 3cell will give you a better flight experience.
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Post by Dillzio on Nov 5, 2011 6:34:48 GMT 1
Better, but briefer. You'd barely get 5 mins out of a 1000mah eh?
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Gohmer
Squadron leader
Posts: 113
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Post by Gohmer on Nov 7, 2011 18:24:08 GMT 1
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Post by flydiver on Nov 7, 2011 19:00:10 GMT 1
There's 2 opposite extremes:
In this corner the heavy weight - Dillzio
And the lightweight - Gohmer
Raw power vs. floating performance.
Remember, it's actually a choice.
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Post by Dillzio on Nov 8, 2011 0:53:49 GMT 1
what motor are you using Gohmer? That flight time is unreal!
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Post by Dillzio on Nov 8, 2011 1:34:07 GMT 1
another thought on the battery sizes - it's pretty much the same price for a 1300 or a 2200mah, so money isn't even a factor in the decision.
I would suggest that it all comes down to your motor. I have never experienced flight times as long as gohmers, on my setup with a 2200mah I can only fly for 8-9 mins, that works out to an current draw of about 14A. If you've got a fairly heavy cub (that needs more power to keep airporne) with a big motor, I recon you're better off with a bigger battery. True, adding a bigger battery to an already overweight plane just makes it worse, I suppose it just comes down to what you consider to be an acceptable flight time. If I was anything under 5 minutes I'd definately be putting in a bigger lipo, but that's just my personal opinion.
Gohmer's flight times of over 20 mins on a 1000mah are incredible! I suppose the cub's flight characteristics are very different when it's kept at the stock weight. I'd been flying my cub for months and mastered the landings, but when I had a go in my mate's brand new stock super cub, I could not believe how floaty it was. Tried to bring it in for a landing and it took forever to touch down, it just kept on gliding!
I suppose flying style and what you build the plane for has a lot to do with it too. Personally I can't think of anything more boring than flying around a lightweight foam plane at low speeds - I think i'd end up trying to fly it through soccer goal posts just to keep myself from getting too bored (BTW I have managed that incredible fete once before in my cub). For a more disciplined mind though, such an activity may actually be quite relaxing and tranquil.
How do you like to fly azertyben?
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Gohmer
Squadron leader
Posts: 113
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Post by Gohmer on Nov 8, 2011 23:27:17 GMT 1
what motor are you using Gohmer? That flight time is unreal! AX 2308N 1100kv brushless Micro Motor on the second one that I used the 1000mah 2cell in. That was my attempt at a cheapie. $112.00 brushless bind and fly, all new parts. I tried the first one this morning on a 1000mah 3cell. 30:15 running the motor constantly. AXI 2208/34 Cubs just aren't aerobatic or fast no matter what you do to them. I've got other aircraft for thrilling flights  |
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Post by azertyben on Nov 25, 2011 22:43:52 GMT 1
Hi dillzio, thank you fo your answer. I like to fly as high as possible then I cut the throttle and enjoy gliding and silence... With the stock motor and 1300mAh lipo I can fly 15 min. I just receive my turnigy 2200mAh from ebay. It costed only 25 euros for two of them, incl. shipping I will test them tomorrow (if possible) and count my flight time. I plan to attach my full hd camera soon and post a video on this site. It's a canon ixus 220hs and it's weight is 140g including batt and sd. Do you think I could fly with both my big batteries + camera The wide angle, the image stabilizer and the full hd resolution could produce incredible pictures... another thought on the battery sizes - it's pretty much the same price for a 1300 or a 2200mah, so money isn't even a factor in the decision. I would suggest that it all comes down to your motor. I have never experienced flight times as long as gohmers, on my setup with a 2200mah I can only fly for 8-9 mins, that works out to an current draw of about 14A. If you've got a fairly heavy cub (that needs more power to keep airporne) with a big motor, I recon you're better off with a bigger battery. True, adding a bigger battery to an already overweight plane just makes it worse, I suppose it just comes down to what you consider to be an acceptable flight time. If I was anything under 5 minutes I'd definately be putting in a bigger lipo, but that's just my personal opinion. Gohmer's flight times of over 20 mins on a 1000mah are incredible! I suppose the cub's flight characteristics are very different when it's kept at the stock weight. I'd been flying my cub for months and mastered the landings, but when I had a go in my mate's brand new stock super cub, I could not believe how floaty it was. Tried to bring it in for a landing and it took forever to touch down, it just kept on gliding! I suppose flying style and what you build the plane for has a lot to do with it too. Personally I can't think of anything more boring than flying around a lightweight foam plane at low speeds - I think i'd end up trying to fly it through soccer goal posts just to keep myself from getting too bored (BTW I have managed that incredible fete once before in my cub). For a more disciplined mind though, such an activity may actually be quite relaxing and tranquil. How do you like to fly azertyben? |
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Post by gliderbloke on Jul 12, 2012 2:38:17 GMT 1
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