Itchy

iTrader: (1)

In my experience that is true, but the diference between rc2000 and GP3300 isnt as big as between RC2000 and 1900 sportpacks.

Besides, RC2000 seem more reliable then nimh cells. I have 5 year old nicads that still work fine. Nimh cells seem to loose punch even when u dont use them.

I donno what kind of testing you have done, but may i sugest you post them here? Im sure it will make the post much more interesting

PitCrew

I soldered leads to the packs, charged them, and repeatedly touched the leads to my toung, after eating sunflower seeds. The 1900 lost its "Punch" very soon off. But the 3300 maintained it punch MUCH MUCH longer.

Danny/SMC

iTrader: (2)

A very good RC2400 has a 1.13 average voltage per cell. A mid grade IB3800 has 1.18 at 30 amps. The lower IR of the NiMh cells will mean under load the difference will be even more. To have your motor run a .30 volts more for the entire discharge curve will make a difference.

Soviet

iTrader: (2)

Dude...

There is little to no difference in weight betwen a 3300 and a 2400 and lower. The sheer amount of capacity that you gain would allow you to gear the motor MUCH more aggressively than you would with a lower capacity battery.

Use better batts and gear higher...thats what we've been doing in this hobby for years now.

Shoot...arguing that the weight gain may not be worth it would be like saying that a V6 in a car is the same as a V8 because the V8s additional weight nullifies it's power gain...which it obviously doesn't.

Jon Kerr

iTrader: (17)

They're legal in pretty much all the biggest events (none of which are ROAR events therefor ROAR not making them legal doesn't mean much.) Reedy allowed them in the Invite class, which is where most of the "pros" are racing, The IIC in Vegas is allowing them, I'm sure they'll be legal for the Snowbirds, Cleveland, The Novak Race at Trackside, etc... Even though not one of these is a sanctioned event, they are the biggies here in the US.

Hawk6

iTrader: (52)

Just read this on the Tamiya website. The winner of the GT-2 class disclosed his speed "secret" was using lighter batteries. So, maybe I was on the right track after all

Here's a portion of the article from tamiyausa.com:

"...but it would not be enough as Houda had an edge in motor and a slight edge in corner speed. Houda would take the win as he later disclosed his secret in agility. Houda as it turned out used older Panasonic NHMH 3000 batteries that by today’s standards are a very light cell compared to the more favored GP 3700’s. It seems that most drivers opted to buy high voltage 3700’s, but Houda’s gamble in having a light car paid off. Since the Johnson motor can only pull so much the extra voltage would not be enough as we clearly saw".

This is dealing specifically with silver can motors, so it may not apply to all situations, but for users of the can motors, this is something to think about.

Jon Kerr

iTrader: (17)

Do they not have a minimum weight limit for this class?

Hawk6

iTrader: (52)

The Tamiya Championship Series has all sorts of rules and classes - see their website if you are interested. For this particular class they define which Tamiya chassis' are allowable, and which hop-ups are allowable, and forbid lightening the chassis (by drilling holes in the chassis, etc.). But, as far as I know, there is not a minimum weight rule.

noobie

mini tcs rules is 1300GRAMS... mine comes in at 1380... with body and transponder.

i measured a 1800mah and a 3300mah battery and it is about 100grams difference....

noobie

very interesting... but a 540 sports motor may be able to use that extra from a 3300?!? need some testing...

Paladin

Expenses, nargh they are the same as a budget, they just make this wooosshing noise as they go flying past.

I feel for you, I have 3 lads and myself racing, now they are all talking about getting another car each!

I am with you, LOVE this sport!