Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
if you where to put a normal pc fan on your batts that would be a good idea right it wouldent be too cold to distort the plates? _________________ Tim Team Reaper.
Tue Sep 21, 2004 6:48 pm
Glen Experienced Roboteer
Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect
heh well no a cooling fan doesnt get air that cool (wish it did though).
but ive heard way to many cases of pc fans breaking, the cheap kind, jakes vantec tornado has been fine, until it ingested lets say, foreign objects _________________ www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz
Tue Sep 21, 2004 6:59 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
I know that the fan dosent make the air cool
Thats why i will have it blowing cooler air from the outside of the robot threw the battery packs which will have heat rings so there is spaces for the air to flow threw _________________ Tim Team Reaper.
Tue Sep 21, 2004 7:17 pm
3Faze
Joined: 26 Jun 2004
Posts: 99
Location: Lincolnshire, UK
quote:Originally posted by windhammer:
Toaster/Strip heater for plastics ?
i think ill try that.
It works great.
Wed Sep 22, 2004 8:44 am
Big AL Experienced Roboteer
Joined: 16 Oct 2004
Posts: 436
Location: roleystone perth. WA
frozen
i was thinking about this today and you on the right track but wrong object it the things that draw power from the batterys that you freeze it slow the electrons down enough to allow a faster transferal rate from object to object.
as for the wires heating up try packing them in ice during the fight or for the extreme liquid nitogen .
you could pack the battery in ice but it would have to be outside the fridge so it couldn't freeze just cool it down you be able to get more juice out of it
the way you pack it is by placing the ice around where the wires connect and less around the battery. this will work but you either have to keep the battery in an esky to carry them around in or it will lose it's charge really quickly just sitting there or just find a frigde that runs on a car battery to lug around _________________ For West ausies interested in robotics email me at: theoneshrug@hotmail.com
OR
dragoonarie@gmail.com
best quote ever:: "Those Gas-Turbine style warehouse heaters arent illegal, and neither is remote controlling one as far as I know."
Sat Oct 23, 2004 10:38 pm
timmeh Experienced Roboteer
Joined: 20 Jul 2004
Posts: 2523
Location: Victoria
Or just forget about freezing anything cos it screwes up your cells _________________ Tim Team Reaper.
Sat Oct 23, 2004 10:42 pm
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
about the only time chilling the robot off would work is if you used high temperature supeconductors, then you only need to cool it down to liquid nitrogen temperatures. (77k -196C) problem is the high temp superconductors dont make very good wires, for that you need to go to standard superconductors (and even then its only "ok") and for that you need liquid helium (4.5k -269C)
then it would start to make a difference. _________________ Mechanical engineers build weapons, civil engineers build targets
Sun Oct 24, 2004 12:01 am
JohnMuchow
Joined: 25 Aug 2004
Posts: 21
Location: New York City, USA
quote:Originally posted by Team Hell Bent!:
Or just forget about freezing anything cos it screwes up your cells
Darn good advice.
Freezing the cells doesn't help anything and can easily cause damage. Reduces the performance of the cells too. Hot cells actually perform better (rate of reaction increases as temperature rises), but it's bad for the cells. You get a choice, run cool for max. life or run hot for max. performance (up to a certain point).
Freezing wires doesn't make any visible difference. As Valen pointed out, even if you used liquid nitrogen it wouldn't help as copper isn't a superconductor. The resistance of copper goes down as the temperature goes down, but not by any amount that would make a difference to us. If frozen, the wires would (maybe) run cooler for a bit but if they want to heat up, you're losing power due to the voltage drop along the wires. _________________ John Muchow, CamLight Systems
http://www.camlight.com
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum