I got another question for you guys. Which battery do you think is better the IB 3800 or the GP 3700.
~Jake Feskanin~

From the numbers I have been seeing on the IB3800's they are gonna be tough to beat. IR's are sick.

i was talking to terry brown about a month ago and he told me 3800 are the way to go.


Brandon

Ask Hays At Lefthander Rc, He May Have Played With Some Of The New Batteries.

IB3800 is the ticket.....but they are not ROAR legal yet. If you are going to use it for sanctioned races...GP3300 cant be beat. Even if 3800 gets the approval...3300 can still be a good practice batts for next season. Plus, 3300 are dirt cheap on ebay..last I look...$39.00 for 6 loose cells. If I were you, I will just wait & see till they come up with the decision on batteries for next season. You never know what GP will come out once the higher amp batts is legal....or Sanyo or Panasonics.... :wave:

what ever happened to sanyo and panasonic? they kind of just died off and arent making good ceels anymore. what happened to them?
~Jake Feskanin~

GP is better, and cheaper.. No ned to use the others anymore.. who wants to pay more money for a cell that isnt as good...

3800 vs 3700= both look good. My 3800s have a better voltage curve to 120sec , then the 3700s are better the rest of the discharge curve.
@ 35 discharge
3800 pack...............3700 pack
335 sec..................337 sec
90/9.6 resistance.....64/9.3 resistance
4.75v.....................4.77v
4.82v @ 120 sec......4.81v @ 120 sec
4.63v @ 240 sec......4.66v @ 240 sec

I think the 3700s look better on the T35. I know the 3800s run alot better than 3300s on the track. I ran the 3800s 2 times one day and they were flat the second run.

Fusion Power Batteries, Maverick Oval Chassis

xxxxx

GP is better, and cheaper.. No ned to use the others anymore.. who wants to pay more money for a cell that isnt as good...

Burbs have you tried the IB's yet??

I am seeing pretty sick results with them.

hey eric,
have your ib cells been venting or leaking at all?
~Jake Feskanin~

You really have to be careful with the IB's,using a detect too high will vent them,and a beginning racer or 1 without topline equipment might damage them.GP's seem to be more durable,and every bit as quick on the track.

You really have to be careful with the IB's,using a detect too high will vent them,and a beginning racer or 1 without topline equipment might damage them.GP's seem to be more durable,and every bit as quick on the track.

My personal packs (that originated from the initial IB3800 production run) are all venting/leaking cells ... and they show no sign of weakness even after leaking NUMEROUS times ... they actually break the track record last time out (at St-Rock) ... DK47 ... if you haven't notice any IB3800 cells going bad after leaking or venting don't scare anybody off thinking it must be bad if a cell leak or vent.

Steve.
tqcells.com

hey eric,
have your ib cells been venting or leaking at all?


I have cycled them at:
Peak 1: 6 amps, .02 cutback
Delay: 120 seconds
Peak 2: 6 amps, .01 cutback
Discharge: 35 amps
Small leaking but have not heard any cell venting.

eric,
have you been able to successfully run two cycles on one pack in the same day? if you have how did the numbers compare?
~Jake Feskanin~

no i never cycle a pack twice in one day. no sense in killing the pack.
nor do i ever run them twice in one day. I try and give the pack 24 hours rest before running it again

Steve if you will re-read my post after my apostrophe,this was aimed at the beginning racer or person on a low budget,it was meant to help them so they wouldn't destroy $$$$ worth of cells.Just trying to be helpful. Take it for what it is.DK

DK47 ... sounds good Danny!

Hey, I still have that video my buddy shot from the snowbird (like 1999) ... we were racing 4-cell 19T and everybody but you and me had crashed in one of the qualifier ... you were "shaking" so much that you had a hard time concentrating ... you were yelling and screaming lol ... I watch this tape now and then, it's one of my favorite "on the bench wrenching" videos.

Steve.

If I am going to buy some battery packs and i have the choice between the same batteries only different voltages should i go with the highest voltage or is it ok to go with a lower voltage if that is all i can afford?
~Jake Feskanin~

Yes, buy what you can afford. Worry more about getting the chassis to work. If your running stock or 19 turn deadshort the battery. Just make sure all the cells are at 0v before deadshorting!!!!

GP3700s out perform and out last IB3800s in any testing.

http://ohiohobbyplus.com/page2.html

GP3700s out perform and out last IB3800s in any testing.

http://ohiohobbyplus.com/page2.html

Oh yeah, how 'bout some more details...

Steve.
tqcells.com

if you have the 35amp batteries and discharge at only 30 amps are you wrecking the cells?

NOPE... your motor doesnt discharge at 30 amps or 35... if it hurt the cells, everytime you ran it would damage them... that is just a discharge reference.. it seems with 35 amap nubers, it help find stronger cells..

if you have the 35amp batteries and discharge at only 30 amps are you wrecking the cells?

Like Burbs said, it won't hurt the cells as long as the discharge rate is greater than the average discharge rate in a race ... I'd recommend at least 30A for stock racing and 35A for 19T and up.

Steve.

Comparing the 2, over a 3 month period, the 3800 lost more run time and voltage. The IR also has risen. The 3700 has lost some run time but has gained in voltage and lowered the IR. With that said the 3700 is my choice.

Jerry Flynn
Team OHP
www.ohiohobbyplus.com

Comparing the 2, over a 3 month period, the 3800 lost more run time and voltage. The IR also has risen. The 3700 has lost some run time but has gained in voltage and lowered the IR. With that said the 3700 is my choice.

Jerry Flynn
Team OHP
www.ohiohobbyplus.com (http://www.ohiohobbyplus.com)

Please post ... cells' labels (GP3700 vs IB3800) ... initial cycle numbers on both (runtime-average voltage-actual internal resistance-etc) ... number of runs/cylces on both in these 3 months ... how were they maintained (deadshorted or not, trayed or not, etc) ... latest cycle numbers ... ?

I'm sure more data on your testing and findings will be welcomed by all ...

Steve.
tqcells.com

Why is it that you are so interested in my findings? You are in the business and know which is better. Post your findings to prove other wise. I am not interested in a debate just the truth. See ya at the races.

Jerry Flynn
Team OHP

Why is it that you are so interested in my findings? You are in the business and know which is better. Post your findings to prove other wise. I am not interested in a debate just the truth. See ya at the races.

Jerry Flynn
Team OHP

Whoah ... so you know ... I have 0 experience with the GP3700 ... All I do now is IB3800.

I've moved directly from GP3300 to IB3800. I thought it'd be interesting to compare numbers and not just generic statements like you've posted.

My mod packs are still cycling 405+ at 35A (6-8 cycles/runs) ... that's like 465+ at 30A ... AIR in the mid to high 8 and voltage 4.68-4.70 (35A).

Steve.
tqcells.com

And my deadshorted IB3800 packs ... well ...

345-355s @ 35A
8.5-9.0mOhm AIR
4.75-4.78V @ 35A

These packs are from the original IB3800 production run (May) and have like 10-12 runs/cycles on them ... they leak, vent, whistle ... but man do they perform on the track (and bench)!

I'll have a new IB3800 batch ready shortly (latest IB3800 version) ... initial report says no more venting/leaking and slightly lighter cell (1g lighter than previous IB3800 which was 3.25g heavier than a GP3300).

Steve.
tqcells.com

GP3700s out perform and out last IB3800s in any testing.

http://ohiohobbyplus.com/page2.html


We have seen the opposite in track testing. The IB3800 outperforms the GP3700. As far as life expectancy goes when charged with lower peak detects the IB3800s seem to hold up well.

Guess matchers like Whiplash, EAmotorsports, TQcells, Powerpush, ThunderRC are all selling IB3800 because they have come to the conclusion that they are inferior to GP cells ?

Drag racers and boat racers are using IB cells beause they provide more power in these extreme consitions.

Here is part of message a racer posted on another message board.

I tried out 2 gp 3700 packs with figures reading 1.19+ from a major brand where as the ib's read 1.170 and 1.175 ordered from a hobby shop in Hong Kong. Both the gp's and ib's are matched at 30amps. Whilst trying out the 4 packs with a 7 turn ti based motor (skimming the com after each run) the gp's gave a constant run with a slight dump after 4mins, and a noticable drop in performance after 4:30 mins, the ib's had an impresive first 4 mins dropping my lap times by .3 of a second and finishing off the 5 min .2 of a second faster then the gp packs. Just imagine having IB packs reading 1.19+ ....wow !!!!

Their is a noticable difference using IB 3800's, lap times will surely drop if you are capable of handling the power and keeping motors at a reasonable temperature. The much more motor cooler surely helps out.

Steve,i have been known to "fly fish" [intense antenna wiggle] from time to time while racing!

That's good info Danny. I may be premature in my post, if so I'll be the first to admit it. If the new IB3800 prooves to be the better cell you can add me to that list of matchers.

Jerry Flynn
Team OHP

Has there been any word about whats going on in the legalization process for these batteries ? Anyone heard which major RC company (example...Trinity, Associated..etc) is pushing which batteries to get ROAR approval ? Reason I asked is , all these talks will be for nothing until we find out which one will be legal or not. Research & development will escalate once the battery is approved. I hope they don;t do the same thing with 3000 got the approval and everybody buys them & 3300 was approved as well and proved to be a better battery. A lot of guys that bought 3000 got burned. With the prices as it is.....I myself don't have money to burn. Just my 2 cents.

SMC will be submitting the IB3600 and IB3800 to ROAR. They fit the current specs and should be approved.

These cells are already being used at many races. It's only good to have competition the way it was when Sanyo was the only cell or lately GP wasn't healthy for the hobby because the price was controlled by one company. With competition cell manufacturers will not be able to raise the price when they feel like it.

Another trick is when you purchase packs there is no need to by 8 packs at a time. Just by 2 and run them 2 times per day. When they start to go soft by 2 more and keep the old ones as practice packs. This way if something new or improved comes out you only have a few packs.

I believe IFMAR has already approved both cells so ROAR will follow along.IMHO.

SMC will be submitting the IB3600 and IB3800 to ROAR. They fit the current specs and should be approved.


Hey Danny.....any idea on the ETA ~~~~Estimated Time of Approval ~~~~ :tongue:

Cells submitted by September 1st will be approved for January 1st.

Danny or anybody else:

Has anyone tried step charging in Oval ??
I hear its big in Touring car right now.

Danny or anybody else:

Has anyone tried step charging in Oval ??
I hear its big in Touring car right now.

I'll do a couple of tests here later today ... will let you know.

Steve.
tqcells.com

Thanks Steve
Before I buy something that step charges i wanted to make sure it would be beneficial in oval racing.

eric,
do you know of any chargers besides the ice that step charge?
~Jake Feskanin~

The Orion charger and the Much More Charger both step charge.

I think the Pro-Trak does also but can't confirm it.

eric,
if step charging does work are you gonna sell your turbo chargers and buy one that does step charge or what?
~Jake Feskanin~

probably not.
one will stay at home for motor work and the other will be at the track for motor and discharging functions.

eric,
if step charging is the way to go do you think i should look into buying a charger that does step charging?
~Jake Feskanin~

I have a tough time buying into the step charge method. To me I can't see the benefit of altering the charge rate but I could be proven wrong. The newer Pitbull from CE can step charge.

I have a tough time buying into the step charge method.

I tend to agree, I just read on the rctech onroad forums, they claim for 5+ minute races it tends to give longer punch throughout the run. But maybe that is because they are using rates lower than 6 amps. Not quite sure.
For oval it's probably tuff to beat a linear charge

thanks for the input Danny

eric,
i think even if some people may say step charging is the way to go i will jus stick with linear charging.
~Jake Feskanin~

Is it possible that the onroad drivers are feeling the punch longer because they are on and off the throttle all the time? Where with oval in stock and on large outdoor tracks we're open all the time.