Re: [TANKS] Re: Status of Brummbar Speed Controllers?
In a message dated 1/5/2010 11:12:34 A.M. Eastern Standard Time, f...@thomson-online.org writes: Frank, Sounds good. Looks like you have a dedicated following. :-) na, he just has a fresh box of donuts he's waving around in the breeze .taunting us Chris, _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
RE: [TANKS] Re: Status of Brummbar Speed Controllers?
And yet more smiles! Glad to see this scooter motor controller biz working out! As for me, I've put the BT-7 on hold to work on the spin caster and mold vulcanizer... I've also been bitten by the 1/16 scale bug But I'm still here! Paul H. -Original Message- From: rctankcombat@googlegroups.com [mailto:rctankcom...@googlegroups.com] On Behalf Of Frank Pittelli Sent: Monday, January 04, 2010 11:51 AM To: rctankcombat@googlegroups.com Subject: Re: [TANKS] Re: Status of Brummbar Speed Controllers? Fred Thomson wrote: I would be very interested in one of these for the Ariete and would love to retrofit the Bulldog. Do you have any data on cost? Price is the first and last thing I think about ... I'm currently in the middle of the process (prototype, design, testing, manufacturing) so I won't know for sure until the actual boards are laid out. My target all along has been dual-motor control for less than $100 and I now know that goal is definitely attainable, now I just need to see how low the bar can be set. Frank P. -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
Re: [TANKS] Re: Status of Brummbar Speed Controllers?
Chris. b wrote: So how many amps would a 500W controller setup handle before melting/ exploding? Simply speaking, Watts = Voltage x Amps So, a 500W controller can handle a different amount of amps depending on the voltage being used. Scooter controllers typically come in 12V, 24V and 36V models and we typically use 24V models so that we can power them from two large 12V batteries in series. Therefore, at 24V a 500W controller can handle approx 20A of continuous current. Fortunately, the scooter world has it's act together and they almost always rate motors and controllers the same way. So, if you have 300W 24V M01 motor, then a 350W or 500W 24V controller should have no problem driving that motor in normal operation. The controller will start to overheat if the motor is locked up for an extended period of time and some scooter controllers have a built-in failsafe that simply cuts all power in that case. Some more expensive ESCs limit power in such cases to allow the vehicle to operate at a reduced performance level until the overload condition has ended at which point it goes back to full power. Frank P. -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
Re: [TANKS] Re: Status of Brummbar Speed Controllers?
frank while i'm thinking of it, is there any way that when the controller hits it's max it can be switched via relays to run directly off the battery? i have an old Futaba 2 channel unit that does this to help prevent unwanted heat and damage to the mosfets (sp?) and such Chris, _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
Re: [TANKS] Re: Status of Brummbar Speed Controllers?
In a message dated 1/3/2010 3:05:32 P.M. Eastern Standard Time, odysseyslipw...@aol.com writes: frank while i'm thinking of it, is there any way that when the controller hits it's max it can be switched via relays to run directly off the battery? i have an old Futaba 2 channel unit that does this to help prevent unwanted heat and damage to the mosfets (sp?) and such Chris, _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) . just read your reply over again and am not sure if you answered this in there or not Chris, _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
