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Old 02-04-2003, 06:49 PM   #16
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18T with 12volts = pooooffffffffff...expensive poooffff too. that 18T will draw too many amps dudes.
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Old 02-04-2003, 06:52 PM   #17
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Quote:
Originally posted by mclan
PLs tell me wat the MAX Ts are these ESC 1) Futaba mc112b & 2) Sanwa BL Fighter. R they better than my 18T Sanwa BL Racer?Thxs!
dude, drop by winnies...she carries futaba, LRP.......if you want to go super low number of turns, get an esc that has no turn limits.......ex$$$ but its an investment in the long run....if you stick to EP lah...i think LRP7.1 got no limits.....check with her.
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Old 02-06-2003, 10:58 AM   #18
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How abt adding a cell?Ppl tell me it will make the car faster. But how?becoz the car is going to be heavier.
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Old 02-06-2003, 04:23 PM   #19
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on some older tamiyas, you may not have the space for an additional cell. but if you do have the space, first check if your esc can handle 7 cells.
an additional cell will not weigh that much, so if you have the space and your esc can handle it go for it.....
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Old 02-10-2003, 01:07 AM   #20
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Blackfoots (feet?) have same "spaceframe" chassis as Frog, so there's heaps of space. As original it can take Tamiya humppack, and can take 6cell stick too so you can make a special 7-cell humppack.

Don't forget there's also the space for the 4xAA RX pack too, which is free when you use ESC. So there's room for another 2 cells in that hole.

And heck, there's tons of air under that Ford truck shell...

(warning... this is coming from an idiot who fitted 42 cells under a Tamiya before. Yeah, forty-two. Ok, so most of them weren't for powering the motor, but still...)
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Old 02-10-2003, 07:27 AM   #21
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hey wc: how did u fit 42 in? which tamiya was it? max number of sub-cs i can squeeze in my wild dagger is 20.
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Old 02-10-2003, 04:42 PM   #22
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huasze, while you can stuff as many cells you want under the shell....but there is such a thing as too many.....the shear weight of the batts will outweigh the gains that can be had from increasing cell count. not to mention the stress that your chassis, suspension has to endure....unless you just wanna go in a straight line.....sorta like a Drag truck!!!???
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Old 02-10-2003, 06:26 PM   #23
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Quote:
Originally posted by huasze
hey wc: how did u fit 42 in? which tamiya was it? max number of sub-cs i can squeeze in my wild dagger is 20.
Pajero Metaltop = lotsa space underneath. And I cheated:-

6 subCs stick pack for to ESC for drive.
10 AAs feeding 6V for the head/tail lights.
36 AAs feeding 7.2V to a hardwired LED array (this sucked about 2A)

Hmm... ya, I can't count. That's 52 nicads all up.


One heavy truck after all that, weighed about 5kgs.
It was built for a single task (engagement "Q"-car) and critically
it was to be driving downhill at the park so that was ok.

All circuits were designed with total redundancy for backup
so that's why there were separate circuits & pwr for everything.
Lights and LEDs switched via 3rd channel servo.

Everything worked fine as planned, although the drive pack
dumped after 5 mins (after it was all over). Rerouted 18 AAs
to drive and it drove on a bit longer... until the ESC got too
hot and cutoff. (Ah well, its a 20yo unit so what to expect?)


Oh, she said 'yes' and that's all past history now.
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Old 02-10-2003, 06:47 PM   #24
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Quote:
Originally posted by WC
Pajero Metaltop = lotsa space underneath. And I cheated:-

6 subCs stick pack for to ESC for drive.
10 AAs feeding 6V for the head/tail lights.
36 AAs feeding 7.2V to a hardwired LED array (this sucked about 2A)

Hmm... ya, I can't count. That's 52 nicads all up.


One heavy truck after all that, weighed about 5kgs.
It was built for a single task (engagement "Q"-car) and critically
it was to be driving downhill at the park so that was ok.

All circuits were designed with total redundancy for backup
so that's why there were separate circuits & pwr for everything.
Lights and LEDs switched via 3rd channel servo.

Everything worked fine as planned, although the drive pack
dumped after 5 mins (after it was all over). Rerouted 18 AAs
to drive and it drove on a bit longer... until the ESC got too
hot and cutoff. (Ah well, its a 20yo unit so what to expect?)


Oh, she said 'yes' and that's all past history now.
very cool........
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Old 02-13-2003, 11:25 AM   #25
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Default Wat ESC were u using?U put soo much batts?

hi!May I knw wat ESC were u using as my Sanwa BL Runner ESC has Thermal Cut off too. But the shop told me it wld burn the ESC too if it gets too hot esp too many batt & any motor below 18T.Can u advise on this?Thxs!
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Old 02-14-2003, 12:29 AM   #26
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Check on your ESC's manual... most ESCs won't like more than 6-7 cells max, and no lower motor than what its rated at.

If you ever have your ESC hit the thermal protector, something is wrong. In proper use you should never experience it cutoff.





However...

1) quite a few boat ESCs can take high number of cells. However a lot of them also require water cooling.

2) some ESCs made for E-Maxx can take 12 cells (2 packs) in series. But you have to decide if your motor can survive 14.4V.

3) some old ESCs like some Tekins can take 10 or more cells too.

4) the dragster guys don't even *use* ESCs...
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