New Futaba CDR-5000 Super Charger
02-09-2005, 11:09 PM
#151
Hi Mark,
The CDAT process is doing well, I'm holding off a little on doing more tests right now, the reason for this is that we have discovered that ambient temperature has huge effects on the cells and I don't want to draw false conclusions beacause of this. I'm thinking about how I can implement a temperature controlled area to remove these issues for future testing.
Right now we are looking very closely at the effects of equalising on the discharge numbers. So far it looks like equalising is not only good but essential and you have to take the cells all the way down and get absolutely everything out of them that you can. The difference in time between not equalising and taking them to 0 is in excess of 30 seconds at 30Amps. (yes 30 seconds). There is details of these tests on the Pro Trak web site.
Multi Phase is proving to be quite interesting and there is a lot of people who like this charge method, I still use linear but I charge at low amps so I don't really need a higher amperage middle section.
Will we see you up in this neck of the woods any time soon?
Chris
The CDAT process is doing well, I'm holding off a little on doing more tests right now, the reason for this is that we have discovered that ambient temperature has huge effects on the cells and I don't want to draw false conclusions beacause of this. I'm thinking about how I can implement a temperature controlled area to remove these issues for future testing.
Right now we are looking very closely at the effects of equalising on the discharge numbers. So far it looks like equalising is not only good but essential and you have to take the cells all the way down and get absolutely everything out of them that you can. The difference in time between not equalising and taking them to 0 is in excess of 30 seconds at 30Amps. (yes 30 seconds). There is details of these tests on the Pro Trak web site.
Multi Phase is proving to be quite interesting and there is a lot of people who like this charge method, I still use linear but I charge at low amps so I don't really need a higher amperage middle section.
Will we see you up in this neck of the woods any time soon?
Chris
02-10-2005, 01:44 AM
#152
Originally posted by crimson eagle
Hi Mark,
The CDAT process is doing well, I'm holding off a little on doing more tests right now, the reason for this is that we have discovered that ambient temperature has huge effects on the cells and I don't want to draw false conclusions beacause of this. I'm thinking about how I can implement a temperature controlled area to remove these issues for future testing.
Right now we are looking very closely at the effects of equalising on the discharge numbers. So far it looks like equalising is not only good but essential and you have to take the cells all the way down and get absolutely everything out of them that you can. The difference in time between not equalising and taking them to 0 is in excess of 30 seconds at 30Amps. (yes 30 seconds). There is details of these tests on the Pro Trak web site.
Multi Phase is proving to be quite interesting and there is a lot of people who like this charge method, I still use linear but I charge at low amps so I don't really need a higher amperage middle section.
Will we see you up in this neck of the woods any time soon?
Chris
Hi Mark,
The CDAT process is doing well, I'm holding off a little on doing more tests right now, the reason for this is that we have discovered that ambient temperature has huge effects on the cells and I don't want to draw false conclusions beacause of this. I'm thinking about how I can implement a temperature controlled area to remove these issues for future testing.
Right now we are looking very closely at the effects of equalising on the discharge numbers. So far it looks like equalising is not only good but essential and you have to take the cells all the way down and get absolutely everything out of them that you can. The difference in time between not equalising and taking them to 0 is in excess of 30 seconds at 30Amps. (yes 30 seconds). There is details of these tests on the Pro Trak web site.
Multi Phase is proving to be quite interesting and there is a lot of people who like this charge method, I still use linear but I charge at low amps so I don't really need a higher amperage middle section.
Will we see you up in this neck of the woods any time soon?
Chris
The one thing I have learned about equalizing to 0 vs. .9 is that while 0 can yield the maximum performance, it can also reduce the life of the pack. We usually run 6 and 7 turn motors here and can use every sec possible. We just have to decide early on what method to stick with and go with it for the life of the pack.
Planning on heading up for one more carpet weekend prior to the outdoor season there kicking off.
See you at the track~
02-10-2005, 05:51 AM
#153
Hi Mark,
Thanks for the info about equalising, I will monitor that on my cells and see what happens. I'll ask Phil if he can do a test with 50 cycles or so to see if there is any reduction in performance. As I understand it performance will reduce naturally over time anyway but I would like to see it it makes it any faster by equalising.
Take it easy,
Chris.
Thanks for the info about equalising, I will monitor that on my cells and see what happens. I'll ask Phil if he can do a test with 50 cycles or so to see if there is any reduction in performance. As I understand it performance will reduce naturally over time anyway but I would like to see it it makes it any faster by equalising.
Take it easy,
Chris.
02-10-2005, 01:19 PM
#154
Tech Initiate
If it helps, I have packs with 17 cycles with a .1V or zero volt equalization before each charge.
These packs show a steady increase in performance, cycled at 30A.
I realize that 17 cycles isn't 50, but it's better than nothing.
The runtimes are something like this....355 seconds at 30A, gradually climbing to 370 seconds or more, over a period of about four months. This is on a CDR-5000, which as previously mentioned, gives lower numbers than a GFX.
These packs show a steady increase in performance, cycled at 30A.
I realize that 17 cycles isn't 50, but it's better than nothing.
The runtimes are something like this....355 seconds at 30A, gradually climbing to 370 seconds or more, over a period of about four months. This is on a CDR-5000, which as previously mentioned, gives lower numbers than a GFX.
02-10-2005, 02:47 PM
#155
MarkD,
What did you use to take the cells to 0v's?
Mike01,
What did you use?
Let me know.
What did you use to take the cells to 0v's?
Mike01,
What did you use?
Let me know.
02-10-2005, 03:13 PM
#156
Originally posted by picco007
MarkD,
What did you use to take the cells to 0v's?
Mike01,
What did you use?
Let me know.
MarkD,
What did you use to take the cells to 0v's?
Mike01,
What did you use?
Let me know.
02-10-2005, 03:17 PM
#157
Tech Initiate
I too used the Smart Tray in "DS" mode, but I also have and used an Integy Zero Equalizer tray ($20) which I like better.
02-10-2005, 03:46 PM
#158
Originally posted by crimson eagle
Hi Jaybee,
While it is true that you will not use all of those seconds, you can think of this in a another light. I like to explain this part using examples so please bear with me.
If for example you have a run time set of cells with a moderate voltage and a high voltage set of cells with lower runtime (or conversely the same set of cells and using two different charge methods one of them getting you more run time).
If you use 350 seconds worth of run time this will be fairly consistant no matter which set of cells you use. Assuming we all agree that at the beginning of discharge voltage is high and at the end voltage is low, the set of cells with the longer run time will have more seconds left in them after you finish the race. With these cells you will be further back (or higher up) on the discharge curve (voltage curve) which will obviously mean that at the end of the race the cells with the longest run time will have the highest voltage (and therefore more motor rpm).
When I buy cells, I always go for run time first then I'll think about voltage.
I hope this helps.
Chris.
Hi Jaybee,
While it is true that you will not use all of those seconds, you can think of this in a another light. I like to explain this part using examples so please bear with me.
If for example you have a run time set of cells with a moderate voltage and a high voltage set of cells with lower runtime (or conversely the same set of cells and using two different charge methods one of them getting you more run time).
If you use 350 seconds worth of run time this will be fairly consistant no matter which set of cells you use. Assuming we all agree that at the beginning of discharge voltage is high and at the end voltage is low, the set of cells with the longer run time will have more seconds left in them after you finish the race. With these cells you will be further back (or higher up) on the discharge curve (voltage curve) which will obviously mean that at the end of the race the cells with the longest run time will have the highest voltage (and therefore more motor rpm).
When I buy cells, I always go for run time first then I'll think about voltage.
I hope this helps.
Chris.
02-12-2005, 06:43 PM
#160
Thanks for the replies - helped a lot, I will test the 5mV/cell tomorrow, I use Novak Smarttray for equalizing the cells to 0.9, maybe that is one reason I get lower mAh-s: I bought the smart tray and the charger in the same time before that I used the pulsar and the robitronic equalizer tray which discharge the cells at 1 Amp to 0.6V.
Have you guys seen the newest issue of the RC Car Action???
Take a close look on the charger on the page 48, indy electronics 16X-G40, the graph it shows on the picture look very familiar to me... They say it can even charge Li-ion cells and has a motor run in, a motor rpm and amp draw check feature. Can it be that a new supercharger was born???
Have you guys seen the newest issue of the RC Car Action???
Take a close look on the charger on the page 48, indy electronics 16X-G40, the graph it shows on the picture look very familiar to me... They say it can even charge Li-ion cells and has a motor run in, a motor rpm and amp draw check feature. Can it be that a new supercharger was born???
02-12-2005, 10:34 PM
#161
Tech Initiate
Instead of "equalizing" to .9V, try going down to .1. You will see a big increase in the mAh you put into your cell.
If you're worried about damaging your cells, don't be. I have a year's worth of data that says you won't harm anything.
When you've seen the benefits of that, go to .1V and then use the "dead short mode", which is not really dead shorting. It just removes the cutoff and makes the Novak tray a 0V tray like most others. Leave the pack in there for about three or four hours and then you'll see some nice numbers going into and out of it.
If you're worried about damaging your cells, don't be. I have a year's worth of data that says you won't harm anything.
When you've seen the benefits of that, go to .1V and then use the "dead short mode", which is not really dead shorting. It just removes the cutoff and makes the Novak tray a 0V tray like most others. Leave the pack in there for about three or four hours and then you'll see some nice numbers going into and out of it.
02-12-2005, 11:06 PM
#162
Tech Initiate
Hey!
I just saw a picture of the new Integy G40....that's a Futaba screen! It's not like the Futaba screen...it IS the Futaba screen!
What's going on? Are they repackaging the CDR-5000 with updated Lithium software?
Integy new product previews
I just saw a picture of the new Integy G40....that's a Futaba screen! It's not like the Futaba screen...it IS the Futaba screen!
What's going on? Are they repackaging the CDR-5000 with updated Lithium software?
Integy new product previews
02-13-2005, 06:16 AM
#163
"that's a Futaba screen" 
I know I just wanted you guys to realize it yourself
I know I just wanted you guys to realize it yourself
02-13-2005, 09:43 AM
#165
Tech Initiate
No, JayBee...you need to take a look at that screen carefully, then look at a Futaba screen. For anyone that owns a CDR-5000, it's immediately apparent.
It IS a Futaba screen.
It IS a Futaba screen.
