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platgof

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I have an Avante 2001 by Tamiya(how do you pronounce this name) and want to get longer run times without blowing anything up and have to replace parts? Would 3800mah be too much power as I am guessing it could be? The lipos have stupid long run time, but the power would wreck this car!
 
platgof said:
I have an Avante 2001 by Tamiya(how do you pronounce this name) and want to get longer run times without blowing anything up and have to replace parts? Would 3800mah be too much power as I am guessing it could be? The lipos have stupid long run time, but the power would wreck this car!
Click to expand...

Tamiya.....Tuh-MY'-yuh.

MAh is like a gas tank. The more there are, the more gallons you have. The voltage remains the same, but your low end grunt and you run time get WAY better.
 
yeap as long as you're talking about 3800 mah in a nimh it will be fine. A 5000 or even 6500 mah isn't going to make and power difference, just make it run better longer. The 2000 mah is like putting 5 gallons of 93 octane gas in your car. The 3800 is like putting 12 gallons of 93 octane in your car, and the 5000 is like putting 16 gallons of 93 octane in your car.

It's all 93 octane, you just have more gas so you can go further without running out.

The only problem you would run into would be with lipo batteries if the ESC can't handle the voltage, but with nimh you should be fine as long as you have a 7.2 volt nimh battery, and your car may handle and 8.4 volt seven cell, but if you aren't sure I would stick with six.
 
I ordered the batteries before checking back here and can now severely kick myself in the butt! Thanks for the explanations and I was using nicds. What will be the difference between a 1500 mah nicad and a 2300 mah nimh, and can I use the same charger?
 
It probably depends on the charger. nicd batteries drain at a slope. So when it's fully charged the car goes full speed, but as you run the car gets slower and slower until it dies. Its really a pain, I only had nicd when I got into electrics and I will never buy them again. After a couple minutes of running, the car keeps getting slower. With nimh, the power basically stays constant until the pack is almost dead. So from full charge till the battery is 80 or 90 percent drained, you get the full power that the battery puts out. Right before the battery is fully drained the car will slow down and you know the pack is almost gone. Hope I put this so you can understand it, my terms aren't very technical. Veterans, if I am wrong on this information please correct me.
 
What about run time, which is longer, 1500 nicad or 2300 nimh? My guess is the 2300 is at least a 50% increase.
 
yeap 2300 will have more run time. The higher the mah, the longer the runtime when compared with the same exact motor setup. You also have to remember that the 2300 is providing full power all the way through its cycle, as the 1500 nicd will only be providing half speed after probly 3 minutes or so depending on the application. What are you using thes batteries for and which ones did you order?
 
Because of the age of the car I went with the 2300 mah nimh and also got a charger for the batteries. I have a charger that puts out 0.5-6 dc amps charging rate for 15 minutes that I use for nicads. I will feel real bright if I could have used this charger as well?
 
well you did good then. I thought that you were saying you ordered nicd, so now that you have nimh you will see the true potential of the car. You will get a signifigantly longer runtime, sometime near double like you said. I don't know what charger you have, but I think from you've said above that you can charge your batteries with it. Now, you will have two chargers which will come in real handy with so many batteries.
 
Once I get used to this then I will look at something with more zip. I am just learning how to control it and trying to get the coordination necessary at speed is a handful. I am finding that when you start turning it takes some real coordination. Yeah, I can't wait to see what some more juice will do when it gets here this week. Maybe 3800's next, maybe!
 
If you can afford it I would pick up a peak detection charger that is nimh compatible nimh packs are a little more sensitive than nicd packs but mimh packs don't get the memory problems that nicd packs get, with nimh packs you can run them half way down let a cool a little and the just repeak, if you keep doing that with nicd packs a 2000mah nicd pack will become a 1000mah nicd pack because it builds up a memory, IMO it is always best to discharge your packs down to almost empty 0.9 volts per cell for nimh and nicd packs, not sure about lipo's as I don't have any. also I would stay away from timer chargers unless you are going to closely monitor your pack because as with any timer charger that i have ever owned they don't know when the battery is full and will keep on charging which can leed to over heating your cells and damaging your battery packs and as far as battery packs go I have two of these for my e maxx and I love them great run time and power http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXNCR2&P=7 good luck and have fun...
 
If I picked up a 5000 mah, that would definetely be a race battery for me. I will find out soon enough if I can even handle 2300 mah? The batteries I have now are 6 years old, nikko 1500 mah nicad, and I am sure they have seen better days.
 
your truck will be just at fast with a 2300 nimh or 3300 mah nimh 7.2 volt battery as it would with the 5000mah nimh battery. The higher mah battery will provide longer runtime, but not more power. It's like a tank of gas. You have a bigger tank, but you're still running on 93 octane gas until it runs out. With the bigger tank, it just won't run out as soon or as often.
 
Your right as my 2300 nicads are the same speed as the 1500's, but I am now getting about 12-15 minute run times, incredible. I just cannot believe how long I can run these as my wore out 1500's were only good for 5-6 minutes, yuk! Now I want more speed, but that can wait till I get a real race car!
 
I picked up a radio shack 3300 nimh pack and installed a quantum performance reciever and an Orion 11/2 motor from Charlies the man, and all I can say is "Beast!" I wasn't planning to put this much power in it but it is so fast and really shows all the cars faults real quick. It will take me weeks to get used to this much power. I totally screwed up the motor when installing it and was lucky enough to not ruin it. It goes like nothing I have ever seen before. Now I am really hooked and know that I could race this moster. It will take awhile before I can pick up all the goodies I need to race, and the buggy will need to be replaced by something sturdier later on. But for now another bettery pack will get me there.
 

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