hi all:Is the reason why lipo batteries get talked about allot in the same coversation as brushless motors because they work better with brushless motors than the current ib/ep/gp batteries do or are they just easier to use and maintain like brushless motors are?Also will brushed motors ever be done away with in favor of brushless motors or will there always be a place for both?thanks for the info :thumbsup:

Brushed motors for racing is about to be a thing of the past. I'm not convinced about LiPo's due to the safety issues with them. There are new cells on the horizon that are to be even better than Lipo's and much safer. You can't have a 4cell (4.8 volt lipo pack). Alot of people are concerned with speed of the cars if we go back to 7.2 volts like we had just 2 years ago.

Can't stop technology from comming!!!

Speed means nothing if you can put the power down on the track.

Nothing wrong with 7.2 volts lipos, airplane, helicopter, boats all use them.

Now magnesium metal hydride batteries to replace are present batteries soon???

Hummmm, sounds like the brush motors versus brushless topic or the spectrum versus crystal radio speed topic etc. ?? LOL

Interesting. But, until these are cost effective, we will have to use the Lipos that we have now.

http://findarticles.com/p/articles/mi_m3012/is_2_185/ai_n12937463

B-man

my take

I hate the idea of going back to high voltage batteries for oval racing. The cars are too dang fast with 4 cell voltage for a large number of racers.

That being said, I also have a LOT of brushed motors, brushes, springs, comm lathe, brush cutters, fiddle stick, etc for building motors...that will become obsolete, BUMMER

Because I have 3 - 3200 LIPO packs (So far) 3 NOVAK GTB's, 1 LRP Sphere Comp, 3 NOVAK 4300/10.5 type motors, 1 5.5 Novak motor, 1 LRP Neo 1 motor and I firmly believe THIS is the FUTURE direction for the 'sportsman' OVAL Racer.

ONE BATTERY RECHARGE ALL DAY for A YEAR +
ONE MOTOR ...RUN IT ALL YEAR

Race, charge, hang out w/ friends and B.S at the track, work on chassis a little, true tires, relax between heats w/o life being rushed and crammed down our throats.

WILL this be the wave for the future of "FACTORY SPONSORED" type racers? Don't know, don't care...those guys (Like HUMPTY) are having a lot of fun with it...and there is NO reason why it can't be...but if they want to stay with the stuff they can tinker with MORE POWER TO THEM but ME...I have other things to do...this isn't my living, I don't profit from the sales of the sponsored stuff I'm running...and if this helps the guys who race afford MORE TIRES, MORE BODIES, MORE...BEER after the RACE...MORE GAS MONEY to get to the track...SO BE IT~

...oh and to combat the speeds of the higher voltage packs...we're looking at SLOWER motors that will if all works right (and as long as guys are patient and don't jump too soon) that will work out AWESOME too.

SWTOUR, amen

If you would have read the other threads, thay are testing some new motors from NOVAK that will be less powerful and MADE to run with the higher voltage LIPOs. Once testing is satisfied and they are sure they have the right motors NOVAK will start production and they will run the NEW motors with LIPOs. Then they will be comprable to a stock brushed motor running 4-cells, but you will be able to run a hard cased LIPO and use one battery all day and for an entire season with reasonable care. Ralf

the answer to this is lipos =speed and more voltage.simple racers can never stop wanting to make their cars go faster.:thumbsup:

i got a question.. has anyone tested a lipo brushless combo at the current weights of noraml celled car?.. how did they compare.... most lipos burshless combo cars are alot lighter ..ALOT >lighter.... so how do they compare at the same weights?


maybe some one here can answer.. its ignored when asked on other forums....


Billy

Billy,

The rules we use for my SWTour series require a 38 oz car for 4 cell (I never raised weight like ROAR did when batteries got heavy) That is the minimum weight we've been testing with.

Josh Smiths 17.5 / 3200 LIPO car at the METRO SPEEDWAY race a couple weeks ago has the entire top of the battery covered with lead.

He said the balance still didn't quite feel right and the car had a slight push...

HUMPTY has been running the Lipo w/ the 10.5 at the RCSports Mania...he also says he still felt there is a chassis balance issue due to the way the weight is spread out instead of being able to concentrate it toward the LR wheel.

My 4200 4 cell pack weighs 302 grams (10.7 oz)
My 4200 6 cell pack weighs 453 grams (16.0 oz)
My 3200 Peak/Orion 3200 Carbon edition LIPO weighs 2.2 grams (7.1 oz)

So to replace a LIPO in a Touring Car from a 6 cell 4200 you'd cut your battery weight 44 3/8% or 8.9 ounces...you could put 2 of these in the car...and just think of ALL the run time you could do for an enduro type race...WOW

Not sure what the NON Plastic Cased Lipos weigh

Joe, Josh's car at Metro was not up to weight. It was close at 37.8 :) It was 41oz at Phoenix along with everyone else.

Thanks Don...

I thought they said it did squeak in...

I knew it was up at Phoenix

My question for testing would running the same speed as 4 cell 4300. I think the lipo (7.2) with 13.5 should be close right?? 4 cell stock is for the new drivers in our area due to the slow speed. We run 5800 with 4 cells and 5.5 with 6 cells in the mod class.

I think it was said that the Lipo/ 13.5 is a little faster then 4300/ 4 cell. So in effect, it could be used as a replacement for 4300/ 4 cell.

Ken

The motor we are/were testing is a 17.5 on lipos. It's pulling virtually the same speed as the 10.5/4300 motor on 4 cell.

On lipo, I'm going to bet the 13.5 motor is going to be nearly as fast as the 10.5 motor is on LIPO..which is almost as fast as a regular OPEN Modified 4 cell class.

Novak is sending me 2 new motors to test today. (These will be SLOW....maybe even too slow, but time will tell)

ok.. thanks...

now how are the compared to speeds? and exceleration...etc....

In phoenix, the guys like Raymond McCoy & Humpty have been running 4 cell MOD w/ brushed 6x1's and 4300/10.5's w/ the LIPO

The track record is currently 1 lap different between the 2. The 6x1 is the quickest. Both records were set 2 weeks ago for their PCSO race.

With the LIPO car balance still being a bit off, the lap times are very similar with the LIPO not dropping off at the end of the run.

The drivers who have run both say the less hot B/L motor with the Lipo isn't so out-of-control feeling on the rip. HUMPTY would be better at putting it into words.

They run 4 minute races, but our series does 5 so we'll be doing some testing w/ the 3200 LIPO and the 4300 motor at our next couple races.

LiPOs might be dangerous - BUT so are sub-c's. Look what happened at a local track here a couple weeks ago:
(the racer was just holding the car ready to race and they heard the sizzle... set it down then BAM!)

http://www.snowbirdnationals.com/newthunder/100_1854.jpg

..what did that thing get charged at....20 amps?

..what did that thing get charged at....20 amps?
Probably 30. :confused:

But you can at least clean off most of the parts and re-use them.

I was in the same room with a spec pack (1600) that was being charged at 10 amps. Two cells exploded and sounded about like a shotgun going off. Twice.