Hi Brandon-
Will the graphs be ready for posting soon? I'm very much looking forward to seeing these graphs. I'm very interested in buying a set of these batteries. I'm just waiting to see your graphs first. Please post any and all data you've been working on regarding these specific model LiPo. ie Graphs, Videos and so on- all of which you have said you would post as soon as you had the time to do so. I would also like to say that you are very professional on this forum. I do hope you will continue to post information as it becomes available to you- onto this thread. I've been eagerly waiting for these graphs and videos you have been working on- and sure hope you can find the time to get these test complete and posted for us- we are all very interested.
PS. I can hardly wait to see the 75amp continuous discharge of this model LiPo. This data alone will show extreme ability.
Note: I had convert my E-Revo to a Brushless E-Revo with the same motor and esc which Traxxas uses in their model- it's the Mamba Monster Electronic Speed Control and the 2200kv Castle Creations Motor.
I was running two 5000mah 3cell 40c continuous 80c Burst Thunder Power LiPo's in series to make a 6cell LiPo- which is what the motor and esc are designed to handle as a maximum voltage. I was doing high speed wheelies through the park and the truck had enough power to pull the front wheels up at apx 50miles per hour. Testing revealed that none of the temperatures were excessive, the motor and esc stayed under 150 degrees, batteries stayed under 110degrees. Gearing was per castle creations tech support suggestions- as well as the setup of the esc.
Running the E-Revo at various different parks or even in a parking lot- is primarily where I run this model RC. I consider this my Basher RC but I don't really jump it or crash it hard- I just pull high speed wheelies and like to go as fast as possible from zero to top speed of this model. Both castle creations tech support and Thunder Power tech support told me this will be fine and the system I have will handle this aggressive driving. After a few runs at the park under the same conditions- I notice the lipos began to puff(only apx 30cycles) And not at any specific time. In other words- they slowly puffed a little more and a little more and the puffing did not go down. I called Thunder Power and they told me I was overdischarging the lipos. I told them I have the LiPo cutoff set to 3.5volts per cell and that I do not run the truck to the point of LiPo cutoff. Jim of Thunder Power explain to me that the motor can also overdischarge the batteries by pulling to many amps. I then called castle creations and they confirm that this system only draws 125amps max. And a 40c continuous LiPo well exceeds this. I called Thunder Power back and they explain in great detail that 1/8th scale buggy is the hardest class of RC on batteries. And that They have to send a new set of lipos to their team drivers about every three months, consistantly. And that lipos raced in 1/8th scale hardly ever last beyond 7 months because of the severe conditions.
I was quite shocked to hear all this because I had thought Thunder Power lipos to be among the best lipos made. And knowing that these lipos by thunder power are under a one year warranty- and Jim telling me that these lipos rarely if ever last 7months- made me wonder why they were not offering to replace my less than 1year old thunder power lipos. In fact- this seem to qualify anyone running 1/8th scale for a warranty replacement after 7months of use(Jim assured me that this goes for all high end LiPo's). I called castle creation tech support and they said it sound like the batteries could not handle the 125amp continuous amp draw I was pulling from the batteries when I would pull a full speed wheelie across the entire field of the park- which could very well take about 5 to 10 seconds at full throttle, or full 125amps continuous, or as castle tech support said- apx 100amps continuous. I imagine MaxAmps is aware that 80% of the RC industry is support by non racers- and people that never go to a track. But rather buy an RC and race it up and down their street(often at full throttle). I happen to do both. I race 1/8th scale buggy which I agree those burst amps are useful to know. But in consideration of the 80% of what these batteries may very well be used for- which is wide open full speed ahead- how fast can I go for how long- those continuous amps sure come in handy. I don't think it hurts to show both the continuous amps and the burst amps. The more information we buyers have access to is the more informed we are. And information on the product is something every racer and basher can appreciate. As for my E-Revo, I've not run it ever sense I found out the batteries could not handle the wide open full speed across the entire park- runs I was doing. I can't tell you how many people would run over to me and ask me where they could buy one of these. And how many dogs chase my RC as well. Many people said they would buy one just to give their pets exercise chasing the RC :)
Note: Brandon- do you think based on the information I provide- I could run 2 6500mah 3cell 150c lipos(in series= one six cell)in my Brushless E-Revo wide open across the entire park which is about the length of three football fields length wise? Without puffing the LiPo's? I've modified the battery boxes so the 3cell 6500mah lipos will fit right in. I just need to know if you think these lipos can handle apx 125amps being drawn from them over the course of apx ten seconds, and then turn around and do it again and again until the lipos are at the 3.5volt per cell LiPo cutoff point- or just before the LiPo cutoff kicks in? Thank you Brandon. I very much look forward to your response.
Quote:
Originally Posted by brandonwilcox
I am not active on other forums. Marketing Director for MaxAmps.com is a full-time job, so I just don't have time to be on the forums chatting away. With that said I am making an effort to get some things together and hopefully the videos will completed shortly and well as some other tests that I would like to share with you guys. You know, it's like one big MaxAmps.com party in here. So enjoy the weekend guys and I will get some stuff to you shortly.  |