good esc and remote?

[jonny]

Re: good esc and remote?

to get the drill batterys useable you'll have to take apart the casing to get nicad cells (1.2v each) and solder them together to get the voltage you want.

[typhoon_driver]

Re: good esc and remote?

to get the drill batterys useable you'll have to take apart the casing to get nicad cells (1.2v each) and solder them together to get the voltage you want.

No, the drill batteries are sized for the motors. You can quite happily take a pack, even leave it in it's casing if you wish and hook them up to your speed controllers. They won't be as high powered as racing packs or whatever else you decide to use but they perfectly usable. The lightweight typhoon bots used these in their case form.

The battery you linked to there is a sealed lead acid battery. Perfectly suitable to use as well however they are somewhat old in terms of featherweight technology. Better to look at nicads or nimh.

[Ellis]

Re: good esc and remote?

And they're hugely heavy, I might add.

[mattsdragons]

Re: good esc and remote?

im going too only ise 2 motors and 2 dead wheels so im tryig too find a good ESC for the t=job?

they are 2 12v drill motors

[typhoon_driver]

Re: good esc and remote?

Two 15amp electronize controllers should do the job happily.

http://www.electronize.co.uk/model_elec ... frames.htm

[jonny]

Re: good esc and remote?

alternatives:

http://www.robotbits.co.uk/motor-driver ... od_62.html - this would also handle 4 motors

http://www.dimensionengineering.com/Sab ... 2X12RC.htm -unfortunately i don't think you can get this in england at the moment

http://www.roboteq.com/brushed-dc-motor ... oller.html -again can't find in uk

[mattsdragons]

Re: good esc and remote?

would a sabertooth 10a be usable for 2 motors?

[typhoon_driver]

Re: good esc and remote?

No. Tried that a while back and with additional heatsinking on the unit it still went up in smoke

[mattsdragons]

Re: good esc and remote?

so this would not be usable?

http://cgi.ebay.co.uk/ESC-15A-RC-Brushe ... 1100332684

[typhoon_driver]

Re: good esc and remote?

No. For several reasons.

- Max input voltage is below 12v (you'll see smoke if you put 12v through it)
- Max current is 15A.....looking at the unit and the size of it and the wiring these are what I like to call hobby amps, not real amps. Basically these cheap chinese knock off speed controllers will give you current handling ratings far higher than they could actually ever deliver. Imagine buying a car and being told it could go 250mph.....brilliant!.....and it cost only 5 grand.....even better!.....except they don't tell you that the test was carried out in a tunnel with a vacuum (no air resistance), ie a situation you would never come across. Extreme example but hopefully it gets the message across.

There are tried and tested speed controllers that have ran in hundreds of machines and been well battle proven. I would highly recommend you buy one of these as you will spend many more hours of pain and cursing as you blow up yet another cheap controller. Spend a bit more cash in the short term and you will save a huge amount over the long term.

[mattsdragons]

Re: good esc and remote?

ok, which type of 15a electronize esc would i need?

[typhoon_driver]

Re: good esc and remote?

You would require at a minimum two FR15HX controllers (one for each motor) however if you were to buy one FR15HVR and one FR15HX you would be able to provide power to your receiver without the need for an additional battery pack.

The FR15HVR has what is known as a battery eliminator circuit (BEC). A standard radio receiver requires a 4.8V supply to operate. This is obviously a lot lower than the 12v main battery pack you will use to power the rest of the machine. You therefore have three options.

- Buy a second smaller battery pack specifically for the receiver
- Use a speed controller with an integrated BEC
- Use a seperate BEC

The BEC takes the 12V input to the speed controller and is able to, along with controlling the motor, drop the 12v down to 4.8V to also provide a supply to the receiver through the connector that you plug into the receiver (the red, black and white wires coming out the speed controller).

[mattsdragons]

Re: good esc and remote?

so, basiclly, buy one FR15HVR and one FR15HX?

[typhoon_driver]

Re: good esc and remote?

that's what i would advise. i've used a fair number of controls in featherweights and always come back to the electronize for their ease of use and reliability.

[mattsdragons]

Re: good esc and remote?

so, about £70 for esc's, and about £50 for transmitor and reciver?