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-   -   SMC 40C+ C-Max 7.4V Hardcase Lipos (https://www.rctech.net/forum/electric-road/260029-smc-40c-c-max-7-4v-hardcase-lipos.html)

Danny/SMC 12-14-2008 01:07 PM

SMC 40C+ C-Max 7.4V Hardcase Lipos
 
Were proud to release info on our new 40C+ C-Max Hardcase packs.

The first 2 packs will be available by the middle of January.


Part # 3240CM 3200mAh / 7.4V / 40C+

Retail: 140.00 Street Price 94.95

Size: L 136mm x W 46.5mm x H 20.5mm

Top exiting wire Black colored hardcase with 12 gauge wires and Deans connector.




Part # 5240CM 5200mAh / 7.4V / 40C+

Retail: 192.00 Street Price 124.95

Size: L 138.5mm x W 46.5mm x H 24.5mm

Top exiting wire Black colored hardcase with 12 gauge wires and Deans connector.





Were confident that our new 40C+ series will offer the best possible performance. Early tests shows that the IR of these new packs is 15% to 20% better than our closest competitors packs.

Here are numbers on four 5000 sample packs we received this week. Actual production packs will have a bit better runtime as were going with a slightly bigger case/cell to help capacity.

All packs were charged at 2C on a Hyperion Duo Balance charger. Packs discharged on a T35GFX/Lipo at 35 amps. Voltage sensing leads attached on the 12 gauge wires were the female Deans is soldered. Pack and room temp was 72 degrees. Packs below are sample packs and actual production packs will have 530+ runtime.


#1 505 - 7.43 - 5.7

#2 507 - 7.45 - 5.1

#3 512 - 7.45 - 5.5

#4 510 - 7.44 - 5.5

ChristopherKee 12-14-2008 02:09 PM

Sweet

Wild Cherry 12-14-2008 02:26 PM

LoL !

Gone Racin 12-14-2008 03:18 PM

batterys
 
Can we pre-order them. if not who will be the first place to get them.Thanks,

Joe Maxey 12-14-2008 03:28 PM

Danny how about a 4s hard case 5000? or even a soft case 5000. I can special order a 4s 5000 40c soft case? Use 1/8th electric guys need these batteries.

Thanks for the help,
Joe

Danny/SMC 12-14-2008 03:33 PM


Originally Posted by Gone Racin (Post 5165654)
Can we pre-order them. if not who will be the first place to get them.Thanks,

We don't sell directly but the usual places that stock our products will get them when the become available. I should have a better idea of the release date in a few weeks. Cells are in production now.

Danny/SMC 12-14-2008 03:35 PM


Originally Posted by Joe Maxey (Post 5165684)
Danny how about a 4s hard case 5000? or even a soft case 5000. I can special order a 4s 5000 40c soft case? Use 1/8th electric guys need these batteries.

Thanks for the help,
Joe

Joe please look at this thread we are going to release a softcase 40C+ C-Max 5000/4S pack for the 8th scale guys.

http://www.rctech.net/forum/electric...fo-wanted.html

c1 racin 12-14-2008 03:52 PM

Danny ..... on your other thread you stated that you are also going to have a new pack with 4mm built connectors for over seas. Do you have any numbers on this pack now? .... V - RT - IR and pack size .... Also, will it be available in the US ..... thanks

Danny/SMC 12-14-2008 04:00 PM

Your right we will release an EFRA based pack in the C-Max 40C+ series. This pack will also be sold in the US and other countries so it won't be exclusive to Europe.

As far as specs go the cells aren't done/ready yet. So I have no info except that we expect the capacity to be 4200+ and possibly as high as 4500. When doing a pack with inboard connectors you sacrifice cell size which reduces the capacity. The EFRA rules also means the case needs to be 1mm thinner than our 5000 case so that will also impact capacity.

I will post the info when I get it from our supplier.

c1 racin 12-14-2008 04:18 PM


Originally Posted by Danny/SMC (Post 5165781)
Your right we will release an EFRA based pack in the C-Max 40C+ series. This pack will also be sold in the US and other countries so it won't be exclusive to Europe.

As far as specs go the cells aren't done/ready yet. So I have no info except that we expect the capacity to be 4200+ and possibly as high as 4500. When doing a pack with inboard connectors you sacrifice cell size which reduces the capacity. The EFRA rules also means the case needs to be 1mm thinner than our 5000 case so that will also impact capacity.

I will post the info when I get it from our supplier.

Thanks .... I'll keep checking back ..... a 4200+/- w/ 40C+/- in the case size of +/- 136mm x 46.5mm x 20.5mm is perfect ... IMO .... one more thing ....

Can you post a chart on your new (Part # 3240CM) 3200mAh / 7.4V / 40C+ and one on your (Part # 4028LD) 4000mah 28C Competition so I might compare the two .... or a link where I could find one ..... THANKS AGAIN ....

SpraydbySprague 12-14-2008 04:25 PM

Will we see a saddle pack 40c? Lookin to power a B44 this summer. :cool:

Danny/SMC 12-14-2008 05:29 PM


Originally Posted by c1 racin (Post 5165860)
Thanks .... I'll keep checking back ..... a 4200+/- w/ 40C+/- in the case size of +/- 136mm x 46.5mm x 20.5mm is perfect ... IMO .... one more thing ....

Can you post a chart on your new (Part # 3240CM) 3200mAh / 7.4V / 40C+ and one on your (Part # 4028LD) 4000mah 28C Competition so I might compare the two .... or a link where I could find one ..... THANKS AGAIN ....


The EFRA pack should be 138.5 x 46.5 x 23

I will only have graphes once we receive our new packs.

Danny/SMC 12-14-2008 05:30 PM


Originally Posted by SpraydbySprague (Post 5165881)
Will we see a saddle pack 40c? Lookin to power a B44 this summer. :cool:

No plans to release a 40C+ saddle as our 4900/25C packs have been very popular and we beleive most racers race mod in 4wd so if more power is required all that is needed is a lower turn motor.

mrrcguy 12-14-2008 09:06 PM

:weird: ,,,,,,,,,, :lol:

360rcspeedway 12-16-2008 06:03 AM

Testing
 
I got a chance to run the new 40c pack. Since I really don't have any experience running two different lipo packs back to back I wasn't sure what the difference would be going to a higher C rate only. I did cycle the pack out on a GFX when I got it to compare to the 28C I have been running. Here are the numbers:

I used a friends GFX since mine is not updated for Lipo yet. He has it setup so that his leads all go to his Deans connector, meaning the main voltage leads and the small voltage sensing leads as well. I would assume with the voltage sensing leads going directly to the battery the numbers I got would be better for both packs? These cycles were done at 100dg.

my 28c
Runtime 510
Ave. v. 7.49
IR 4.6

new 40C
Runtime 513
Ave. V. 7.56
IR 3.2

I will try to get cycle numbers again with the voltage sensing leads hooked up the proper way.

Anyways from the cycle I'm thinking its not that big a deal going from the 28C to the 40C. I was wrong.

My plan was to run my 28C, then take the car off and recharge and then run again. Then, do the same with the 40C, so that both packs had a rerun on them as from what I've seen these lipo's always seem to run a lil better the more you run them in a day, and it would be a comparable test.

I got my runs done with the 28C so I had a good baseline. 9.1 hot lap with alot of 9.2's and 9.3's. This was on the 2nd run of the pack.

Then I put the 40C pack in to make its first run. 9.0 hotlap with a ton of 9.1's and a few 9.2's. Finished with a 9.1. It was a noticable difference, sort of like going up 2 teeth if you were undergeared. Rip from corner to corner was noticably better as well as top speed (which to me doesnt make much sense cause voltage its pretty close)

Now I am thinking man this is going to be really good on its 2nd run..and then I looked at the clock and had to leave..LOL. So i never got to do the 2nd run.

I'm going to try to do this test all over again either today or tomorrow if I have time, but the pack def. shows serious potential being it was better than my 28c pack even on its first and only run of the day.

All runs were done with the packs NOT heated. I never heat my packs and really only did it on the cycles cause A) the guy who's charger I was using had a lipo sack with the heater setup in it already B) Seems to be when people do cycle packs they heat them.

Well I hope this helps a lil if people were wondering about the new packs. Like I said I'll try to have more info up here either today or tomorrow.

-Donny Lia


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