Racing battery choices

[zeropointbug]

I'll get the Tekno unit then. Hey Jhautz, do you have any Eagletree graphs on those 45C packs? The mains at my track are 30 mins, not 25. Yeah, I used to use 6s 4200 G3 pack for ~20 mins, then swap out for a 6s 3800 25C Enerland Hyperion pack. wow, you must trash the throttle if you are getting the runtime on that much pack. I can get dang near 15 mins runtime on a 7s1p A123 pack at the track.

[jhautz]

No. No eagle tree. I have one but, I gave up on worrying about the details like that. I havent even touched it in years. As long as the pack delivers the punch and doesnt puff when I beat on it its a good pack to me.

As far as run time.... It depends on the track really. If its a tight track where you are picking through alot of technical stuff and you cant really lean on it then I get more run time, but if the traction is up and the track has room to let it run then I can blast through the mah. Same as anyone. The tracks around here tend to be on the large side so they do require some juice.

[zeropointbug]

Yeah, that's probably why I have had higher runtime than you guys, our track has only 1 long straight, the rest is very technical and doesn't require much energy to keep the truck rolling on a steady pace.

[zeropointbug]

So the race track is being completely redone into a different track layout this year, I think they are finishing it this weekend. I emailed my buddy, and track director to see what was up and tell him I'm coming back this year. He says the seasonal races, which run everyother Sunday, are going to be different starting this year, 3x 15min races for each class, with the two trophy races (2 day weekend races) that run once in June, and once in August are either going to be a 30 min or 45 min races I hope it's not 45 mins, that will be an expensive battery buy... I also am not going for Thunderpower, because you need buy some stupid balance port adapters which are going to be annoying to use... did you know TP packs have TWO balance plugs for packs over 5s?! It's time TP used JST plugs.

I got it down to two choices, which are dependant on how long those trophy races are...

30 min race = 3x Hyperion 6s 2600mah 45C

45 min race = 3x Hyperion 6s 3300mah 45C


Does anyone have any experience with TP 65C packs?

[zeropointbug]

Good news, the trophy races are only going to be 30 mins for sure. A couple of guys were pushing for longer MAINS, but the majority said 30 mins if enough for marsheling; I know I wouldn't want to go for more than 30 mins either out there.

So I will be buying 3 of the 2600mah 6s 45C packs, plus they are selling the Sentry pack checker for $14.

$335 before shipping

[jhautz]

Yea. 30 min is plenty for any race. I feel sorry for the poor Bmain guys that would have to marshal for 45 min. Marshaling a 30 min race sucks bad enough.

[zeropointbug]

I can't seem to click confirm purchase for those Hyperion packs... I was just thinking, since only two races out of 26 races in a season are 30 min, and the other 24 are 15 min each, why not just go for the 65C TP 2250mah packs, for 8 mins a pack, and light weight to boot! 370 grams.

If I wanted to save money I would get a single 3300 65C pack for $170.

I know it might be a better idea to go for the 2600 packs, but I am feeling like what the hell, why not try these things out, and may as well use the C rating and get a small pack right?

[zeropointbug]

http://www.skoffroad.ca/

Okay, there is the new track layout, they just finished yesterday. It looks like it is a bit faster than the old layout, and not as much tight elevation changes, which I will miss, like reverse banks and such.

JHautz, what would you do, buy two TP 65C 3300 6s packs for $340, locally no shipping... OR get the 3 G3/45C 2600 6s packs for $360 shipped? This is really bugging me.

[zeropointbug]

The Tekno sway bar kit and Tekno RC axle carriers with 17mm adapters are on their way to me now. Hope they give the truck the needed edge to keep up with the truggies without popping pillow balls out at every corner, which is what the Ackermans on the carriers are for. First race this coming weekend.

[zeropointbug]

Just curious, does Mike still sell the hybrid Revo 1/8 diff kit?

[zeropointbug]

Hey guys, here is a pic of my new G3 EX packs! Each pack cycled the first time at 22mohm, 2nd time was 17, the 3rd was around 14-15, so I expect when I start putting a few good real discharges on them the iR should be down to 12mohm where they should be. I ran a couple should test runs only to ~70% DOD and wow do they already have awesome punch, the truck feels more balanced and I notice the weight difference for sure over my old packs. The Sentry balancer is a really nice gadget to have, especially for doing quick pack SOC checking, without hooking up to charger.

Also, I took the lexan plates i had undernieth the double shrink wrap on the old 4200 G3's and noticed they have puffed a bit and have what looks like dirt under the shrink wrap. That must be why they have lost so much capacity and puffed, and pack iR has gone up 50%. Check it out in the pic.

How would dirt creep it's way up into the shrink like that? Seems very unlikely to me.

[zeropointbug]

yeeaah baby, I got 2nd place in Qualifiers yesterday, that was against 5 truggy guys! I had the 2nd fastest lap of ~42 sec, with my buddy in 1st place being a ~40 sec fast lap with a Serpent truggy.

Several younger guys are at the track this year with electric truggies and buggies, and I bite my lip when I see them buying thunder power 65C packs while running an cheap chinese brand motor/esc combo, or a MMM combo with cheapo packs... not to mention they are running these packs to 95% DOD!! Yikes, I am trying to teach them about lipo care and when a good pack/motor/esc combo will get you.

My little 6s 2200 G3 45c packs are running awesome, although I don't like the runtime (8-10 mins) depending how I drive, they are running wickedly cool, coming off at barely warm to touch (didn't temp them), but I would say ~15F over ambient. These other guys huge packs are coming off at 130F (Zippy flight max packs).

thats great

[Kcaz25]

very nice!!

[zeropointbug]

Thanks guys.

Does anyone know how to prevent the pillow balls from pulling out, I bought the Tekno hubs, but they don't prevent this particular problem. I was thinking two big 2.5mm set screws?

I recall there being a solution to this, but I can't remember who or where to find it.