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any recommendations on what battery to use on the SWM Blueback? i got the impression that a 6cell pack would work since it has the new motor upgrade? anyone still reccomend 8 cells? also, what battery packs do you use? since some packs don't fit right b/c of their endcaps, what premade battery packs are available that fit with no problem? also, with D&E 3" WTC in a Thor LA II, LA III or even a seawolf hull, what batteries do you guys use for those subs? how many cells? regulcar subC, sized battery packs?
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In my blueback, kit I
In my blueback, kit I use and recommend 3000 mah nickel metal hydride r/c car batteries and charger, they fit well and run the boat for well over an hour.
Tower hobbies is where I get mine, they usually have the best deals here in the states.
dave -
In my blueback, kit I
In my blueback, kit I use and recommend 3000 mah nickel metal hydride r/c car batteries and charger, they fit well and run the boat for well over an hour.
Tower hobbies is where I get mine, they usually have the best deals here in the states.
use 7.2v, the motor upgrade has been the standard for about 2.5 years now.
daveComment
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i think i will stick
i think i will stick to nicads...cheaper, can take more abuse, and have more power. who makes the battery packs you use? tower hobbies, trinity, duratrax, team orion, etc?Comment
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Maybe, but they don't last
<I think i will stick to nicads...cheaper, can take more abuse, and have more power. >
Maybe, but they don't last near as long and if you don't mind 20 to 30 minute outtings then, I guess your okay. One hour + sounds a lot better to me though.Comment
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i'm used to 4-6 minutes
i'm used to 4-6 minutes flight/run times in my previous hobbies; 20 - 30 minutes is long enough for me; especially with it's added convenience. i'm sure 2400 mah can give me at least 40 minutes, right?
oh, and if you want to talke about running time, every tried lithiums? or is there some issue with using lithium in submarines that i don't know about?
Edited By petn7 on 1072111485Comment
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To me Lipo's are a
[color=#000000]To me Lipo's are a no go in submarines. They are far too suscpetable to explosion or excessive heat generation for my needs. The current being drawn from them, the charging and discharging of them requires special ciruitry...........
Look again on this board and the rest of the net. Lipo's suck. Bigtime.
If I wanted low weight/ small volume / high capacity I'd go with NiMH. But since I have the luxury of building a big boat (1]Comment
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lithiums can take 10C discharge
lithiums can take 10C discharge rates...at least in helicopters. i do agree however about the hazards of charging them, but then again, i could say the same with nimh - hence why i choose nicads. still, what battery sizes can i use in the small world models blueback? since certain brands don't fit b/c of their endcaps. or has SWM fixed that problem as well?Comment
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i was at one time
i was at one time considering lithium polymer becuase i was using them in planes, but to run a speed 300 or 400 motor you need the appropriate current draw ability that usually means at least 2 cells in series then so many packs in parallel. (2s2p or better) now if you look at the price of them and the charging requirements, then it may not seem like such a good idea, you sure cant use a standard charger for them--thats where the fires get started!!!! PLESE DONT TRY>
in planes and heli's its really worth it to save the weight and get that extra power..but weight isnt really an issue here. So then you get back to volume vs power and the next answer is nickel metal hydride if you have the money and nicad if you dont want to spend as much or dont care about the difference.. personally i dont like nicads because of the memory, and the lower amount of storage per volume --some guys may be so used to them that it doesnt matter,,just so long as your battery can supply the amps and its the right voltage range for the motor and speed controller. I had also looked at brushless motors and came up with similar reasons for not using them..the keep it simple stupid saying may apply here..and keeping it simple isnt stupid at all--enough goes wrong without trying..its fun to consider all the options though, i have been looking at re arranging my WTC's to make them cleaner and more efficient, nicer trays etc.Comment
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i also agree with mr
i also agree with mr manley that tower is a super place to buy generic items that the pro'subbers dont usually stock.Comment
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yeah, but tower hobbies sells
yeah, but tower hobbies sells MANY MANY kinds of the same products, hence my original question, which battery packs will fit/not fit in the blueback WTC?
btw, i don't think using brushless is a bad idea in subs, except for the price. i kno in electric helicopters it's almost a necessity to have that kind of power and efficiency and with subs, it's not ncessary, but then again, if you guys spend $2000 on one sub, what's an extra $200 on your motor? might as well get the best of the best, right?
Edited By petn7 on 1072152367Comment
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do you know of a
do you know of a brushless speed control that will reverse without changing the wires on the contacts? if you flip the reverse switch on a futaba radio etc, the brushless will run the same way and the stick will work backwards.
if you do let us know..Comment
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In my blueback, kit I
In my blueback, kit I use and recommend 3000 mah nickel metal hydride r/c car batteries and charger, they fit well and run the boat for well over an hour.
Tower hobbies is where I get mine, they usually have the best deals here in the states.
dave
i think dave spells it out here.
check the standard dimensions for Length]Comment
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that's right, most BL motors
that's right, most BL motors and esc's don't have reverse. i didn't know reverse on R/C subs were a requirement; i guess they are. thanks for the dimesions, lemme go see if the batteries i have will work...Comment
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wow, something must be weird
wow, something must be weird here. i have my old sub-C 6 cell battery pack from when i ran r/c cars and its dimensions are]http://www.subcommittee.com/forum/icon_question.gif[/img]
Edited By petn7 on 1072479875Comment
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