IFMAR AGM in Collegno - Future of ISTC
#301
Tech Addict
I think some people are confusing runtime and voltage. This idea of reducing the number of cells is geared to reduce the voltage not runtime. However as stated above the runtime will suffer...but thats not the focus.
#302
Originally Posted by WhoMe
I think some people are confusing runtime and voltage. This idea of reducing the number of cells is geared to reduce the voltage not runtime. However as stated above the runtime will suffer...but thats not the focus.
I mentioned earlier in this thread than nobody had even tested 4-cells. It HAS been tired, but until we know what the actual effects of the change are (run time, speed, lap times, motor and brush life), and if they even solve the heat problem, it is premature to make such a drastic change.
#303
Just to clarify my thoughts on 4 cell 27,you probably won't need the runtime anyway so to knock off 2 cells surely won't be a big deal.
The main issue is with modified,where the amp draw/discharge? are higher... (think I got that bit right,lol).
The main issue is with modified,where the amp draw/discharge? are higher... (think I got that bit right,lol).
#304
Just a thought - if we drop from 6 to 4 cells. . .we're already having some issues with BEC voltage with some of the new receiver and servo systems out there. . . won't dropping 1/3 of the voltage possibly exacerbate this?
(I say this knowing that the ESCs DO some voltage regulation to the BEC circuit. . .)
(I say this knowing that the ESCs DO some voltage regulation to the BEC circuit. . .)
#305
Originally Posted by Boomer
Just a thought - if we drop from 6 to 4 cells. . .we're already having some issues with BEC voltage with some of the new receiver and servo systems out there. . . won't dropping 1/3 of the voltage possibly exacerbate this?
(I say this knowing that the ESCs DO some voltage regulation to the BEC circuit. . .)
(I say this knowing that the ESCs DO some voltage regulation to the BEC circuit. . .)
4 cells will also kill 27 turn as the spec/stock class, the cars will be brutally slow.
#307
*cough*
5 cells
*cough*
5 cells
*cough*
#308
Today 12:09 PM
tallyrc and once you add a receiver pack, so much for the weight savings of dropping two cells
tallyrc and once you add a receiver pack, so much for the weight savings of dropping two cells
#309
Tech Elite
iTrader: (12)
Originally Posted by Rick Hohwart
Not exactly. Battery capacity does remain the same, but you have reduced the packs available energy (which is the point in the first place). Less energy could very well result in less run time.
maybe a timing rule is in order???
#311
Originally Posted by Boomer
Just a thought - if we drop from 6 to 4 cells. . .we're already having some issues with BEC voltage with some of the new receiver and servo systems out there. . . won't dropping 1/3 of the voltage possibly exacerbate this?
With 4 cells the extra weight of a touring car would mean more potential problems due to the volt drop under hard acceleration or from the current draw of high power servos. A receiver pack would be needed to avoid problems, so more weight to add to cars plus rx batteries to buy and charge etc... is this really such a good idea?
We are of course talking about in the future, right now there are no major problems that need fixing, unless batteries are likely to exceed 5000mAh most existing electronics should be fine and not suffer from overheating. Thermal shutdowns are not what the majority of racers experience in Mod TC even in hot countries.
It would be good to know if we are likely to ever see 5000mAh+ cells, there must be an upper limit to the capacity of Sub C NiMH batteries!
#312
It wouldn't be the weight I'd be concerned with. . .it would be the complexity of yet another component to worry about, another battery pack to make sure is charged, another connection and plug and wire to make sure don't get snagged or unplugged. . . you know?
#313
Tech Fanatic
iTrader: (5)
Josh your right about the 10 to 15 cars on the track. After thinking it more over, I can your point. It was 4 am when I wrote it. seemed like an intreging idea.
I will be looking forward to see the out come at Vegas this Sept. Just curious is there another major coming up that is on asphalt this summer. would like to see the out come of that too. Also to see what the top drivers are doing to keep everything in check.
I guess time will tell. At least were concerned now before it's to late.
I will be looking forward to see the out come at Vegas this Sept. Just curious is there another major coming up that is on asphalt this summer. would like to see the out come of that too. Also to see what the top drivers are doing to keep everything in check.
I guess time will tell. At least were concerned now before it's to late.
#314
Originally Posted by Boomer
It wouldn't be the weight I'd be concerned with.
#315
From alot of the comments i've read braking seems to be one of the main problems with heat buildup in the esc and motor but can anyone tell me if there is any difference in heat build up between a spool and a diff?
I imagine there would be cause you dont need to brake as much with a diff, you can scrub the speed off when entering the turn. Just a thought but if you only allowed people to run diffs (no one ways either) you may reduce heat buildup (if there is a difference?) and you will slow the cars down and also reduce the chance of breakages. Might even reduce the cost of new kits as you wouldnt really need alloy/titanium driveshafts anymore.
I imagine there would be cause you dont need to brake as much with a diff, you can scrub the speed off when entering the turn. Just a thought but if you only allowed people to run diffs (no one ways either) you may reduce heat buildup (if there is a difference?) and you will slow the cars down and also reduce the chance of breakages. Might even reduce the cost of new kits as you wouldnt really need alloy/titanium driveshafts anymore.