RE: Want a 1/8 Brushless
If you want bang for your buck....check this out. [link]http://www.modelrectifier.com/search/product-view.asp?ID=10155[/link] Tim
Posted on: 3/18/2010 10:38 AM by Author "Tim@MRC" in the forum "RC 1/8th Scale Buggies"
http://www.rcuniverse.com/forum/fb.asp?m=9592356

RE: Another Superbrain 960 charging problem post
No sweat...I hear ya. You can send them in to us at: MRC 80 Newfield Ave. Edison, NJ 08837 Put on the box - ATTN: Tim - Urgent I'll try to turn these around pretty quickly for you. Tim
Posted on: 1/14/2010 5:59 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9416126

RE: SB 960 LCD not working
Well, if worse comes to worse, send it to me and I'll take care of it for you. Tim
Posted on: 1/14/2010 5:57 PM by Author "Tim@MRC" in the forum "Academy Racing (MRC) Support Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9416122

RE: SB 960 LCD not working
Have you tried it on 12V? Also, make sure that the 110V plug is pushed all the way into the charger. Let me know what you find. Tim Sandor
Posted on: 1/14/2010 10:52 AM by Author "Tim@MRC" in the forum "Academy Racing (MRC) Support Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9415011

RE: Another Superbrain 960 charging problem post
Hi Guys, Sorry I haven't responded recently. If you both can return your 960's to us for servie, I'll cover them both under warranty. Please send them to us with your name, address, and phone number with a brief description of the problem and we'll take care of them for you. Tim Sandor
Posted on: 1/12/2010 1:29 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9409834

RE: SB Pro 4wd slipper problems
Check the diffs and make sure they're tight enough. Tim
Posted on: 9/21/2009 5:36 PM by Author "Tim@MRC" in the forum "Academy Racing (MRC) Support Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9113100

RE: Need Help with SB SPORT V2 BUGGY KIT Build!
It could be that the diffs aren't tight enough, or if there's a slipper clutch, it may be too loose. when checking the diffs, you should be able to hold the outdrives/diff hubss, and you should not be able to spin the gear. Tim
Posted on: 9/21/2009 5:34 PM by Author "Tim@MRC" in the forum "Academy Racing (MRC) Support Forum"
http://www.rcuniverse.com/forum/fb.asp?m=9113093

RE: flustered!! need help!!
Give me a call and either John or I can walk you through the set up. Once you do it the first time, you should be able to set it up anytime after that. 732-225-6360 Tim
Posted on: 9/21/2009 2:41 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9112651

RE: Having 960 charging problems?
I replied to the other post. However, was the battery warm when the charger shut off? Tim
Posted on: 8/31/2009 2:16 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9059119

RE: Hey Tim still having 960 charger problems
Was the battery warm when the charger stopped?
Posted on: 8/27/2009 6:01 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9050168

RE: Having 960 charging problems?
I would actually leave the mv settings alone and try the higher amp rate first. Tim
Posted on: 8/21/2009 5:00 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9034156

RE: Having 960 charging problems?
These are run packs for your car/truck? If so, I would try charging them at 4.5 amps or higher and see what happens. You should be fine charging them at the higher rate. Tim
Posted on: 8/21/2009 3:28 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9033969

RE: flustered!! need help!!
If the battery manufacturer states that they can be charged at 3C, then 5 amps is well within that. Tim
Posted on: 8/21/2009 1:28 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9033717

RE: Having 960 charging problems?
Are these brand new packs? If so, it is very typical for new packs to false peak the first couple of charges. Also, what charge rate are you charging these packs at? Tim
Posted on: 8/21/2009 1:27 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9033716

RE: flustered!! need help!!
Yes...you can charge that battery as high as 3.2 amps. The 20C is the maximum discharge rate that the battery can handle. This is given as a multiple of C, with C being the capacity of the battery. Your 3200 mAh battery can also be considered a 3.2 Ah battery. Using the 20C formula, 20 x 3.2 = 64. This is telling you that the battery shouldn't be discharged any higher than 64 amps. Your charger/discharger will in now ay be able to discharge a battery at that high of an amperage. The cut-off you're talking about may be the voltage per cell. For LiPo batteries, I would use 3.3 volts under load. You really shouldn't have to discharge LiPos though. For that battery, 3C would be 3.2 x 3 = 9.6 amps. A lot of batteries can handle a higher than recommended charge rate. For instance, I just learned from the manufacturer of our RFI LiPo batteries that they can be safely charged at 4.5C, or 4.5 times the capacity of the battery. However, I would consult the battery manufacturer before you attempt this, and I would definitely use a LiPo charging bag just in case.
Posted on: 8/21/2009 9:14 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=9033205

RE: MRC 977 Fix
Wow...you said that all in one breath. Sorry to hear about the problems you had with the 977. These are QC'd, but I guess they missed one. Or, it worked fine when it was here and was already slightly loose, and came all the way loose in shipping. In any event, I'm glad you got it figured out. Let me know if you need anything. Tim Sandor
Posted on: 6/30/2009 5:52 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8895554

RE: Super Brain 989 problem charging 1 cell lipo
Send it in for us to take a look at, it may need to be re-calibrated. Tim Sandor
Posted on: 6/30/2009 5:37 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8895516

RE: SUPER BRAIN 969 frying reciever batteries
Sorry for the delay. Is this the 969? Send it to us to take a look at. Put a note in there and reference everytihng you said in the post and send it to me attention. If it fried a few packs, I wouldn't use it until we get a good look at it. Tim Sandor
Posted on: 6/30/2009 5:36 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8895507

RE: 977
Have you tried pressing the "Start/Stop" button once the charge/discharge is complete to reset the charger? Tim Sandor
Posted on: 6/30/2009 5:34 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8895505

RE: MRC 959 SuperBrain Damage
Hey Darian, Are you still at the same address? 920 apt 2? Tim
Posted on: 5/29/2009 5:17 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8809516

RE: MRC 959 SuperBrain Damage
Why don't you send it in to us and I'll repair it for you? The only thing I would ask for is $8 for return s&h. Tim
Posted on: 5/28/2009 5:11 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8806713

RE: charging help for these batteries
I wouldn't charge the receiver pack any higher than 3 amps. It very well may false peak the first time or two that you charge it. Keep charging until you feel the battery begins to get warm, that's how you know it fully charged. After the first charge or so, it should take a full charge on the first try without any false peaks. The charger has a mAh screen, so you can gauge how much of a charge the battery is taking by looking at that screen. The 2500's, you won't be able to charge them through the charge jack because of the reverse polarity protection in the charger and the transmitter. You will have to charge them in a separate holder, which you should be able to find at Radio Shack. I wouldn't go any higher than 2.5 amps if you're in a hurry because they are a smaller cell, but otherwise 1 amp on those should be fine. Again, the warmth in the battery is a good indication if they're fully charged.
Posted on: 5/28/2009 5:09 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8806706

RE: flustered!! need help!!
Hi Rick, You have to look at everything as a learning experience. Over the years, things have definitely become more advanced than the used to be, but with a little reading, experience, and asking questions, it will all start to make sense. NiCd's are the tried and true batteries that have been around for years. They are a very durable cell and can take a lot of abuse. They can accept a very high charge rate compared to their capacities, as high as 3C. The problem with NiCd's is that they're heavy, don't have a very high capacity, and can't handle the demands of high power RC systems. The thing is, we want to go faster, longer. LiPos allow us to do that. With LiPos, you don't have to worry about cycling. If you use NiCd's regularly, then you really only need the cycle them once every 25-30 charges. This helps to alleviate the imbalance that would occur in the cells. With LiPos, you use an outside balancer. Again, NiCds are very durable, if you slightly over charge one cell in the pack due to imbalance, there is usually no noticeable damage, it just heats up more. With LiPos, if you overcharge one cell in the pack due to imbalance, there is the risk of explosion and fire, that's why we use balancers. So when we talk about charging and discharging, we talk in terms of C. C is the capacity of the battery. Most LiPo batteries should be charged at a 1C rate, or 1 times the capacity of the battery. For reference - 1000mAh = 1 Ah. So if you have a 4200mAh LiPo, you can charge it as high as 4.2 amps. The important thing when charging LiPos, is to make sure that all of the settings are correct on your charger. If the LiPo is a 2S pack, then make sure the charger says 2 cells. You may also notice that LiPos have another rating on them, for instance 25C. This is the maximum discharge rate. So again using the 4200 mAh battery, if it's rated at 25C - 4.2 x 25 = 105 amps, you can draw 105 amps from this battery continuously. This is a quick explanation, if you have any further questions feel free to email me at tim@modelrectifier.com I hope this helps you out. Tim
Posted on: 5/28/2009 10:47 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8805737

RE: Tim Sandor Mailing address?
MRC 80 Newfield Ave. Edison, NJ 08837
Posted on: 3/11/2009 10:44 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8566478

RE: Super Brain 977 **READ**
Good, glad to hear you got it working. Let me know if you need anything else. Tim
Posted on: 3/6/2009 3:36 PM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8550692

RE: 969 super brain LIPO compatible?
It depends on which version you have. If the charge rate goes up to 5 amps, then it should have the LiPo specific setting in it. If not, then send it to me with a check or a money order for $43.00 and I'll swap it for a new 977. Tim
Posted on: 3/6/2009 10:18 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8549855

RE: Super Brain 977 **READ**
When you hook up the balancer, does the voltage of the battery appear on the screen? I think you may have to set the balancer into "link" mode. Tim Sandor
Posted on: 3/6/2009 9:51 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8549757

RE: 989 help please
Sorry for the delay, and sorry for the problems you're having. Send me the power supply and I'll replace it for you. As you can see, a loose connection has a higher resistance, which will cause things to heat up a little bit. Get it to me and I'll take care of it, if you haven't already sent it in. Tim Sandor
Posted on: 3/6/2009 9:46 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8549743

RE: 960 help please
Hi Joe, Sorry for the delay, the Holidays have us backed up a bit. A new charger is being sent out today. Tim
Posted on: 1/27/2009 11:30 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8407336

RE: 960 doesnt charge properly
When you plug in the charger to the wall without a battery attached, does the display come on? Have you tried on 12 volts? If you're still having problems with it, send it in to us and we'll take care of it for you. Tim
Posted on: 1/27/2009 11:25 AM by Author "Tim@MRC" in the forum "MRC Charger Product Support (i.e. Super Brain, etc)"
http://www.rcuniverse.com/forum/fb.asp?m=8407318