tc4basher

Does anyone know the burst C rating on these? Constant is advertised as 90c, but no burst is mentioned.

Is it 90c? 100c? 180c?

I've googled like crazy and cannot find the answer! Haha

1967Typhoon

iTrader: (35)

It's usually double the constant. Why are you so concerned? This battery should be strong enough for just about any type of vehicle imaginable. That's a pretty high C rating, even though it's likely seriously overrated.

tc4basher

Well im currently running Turnigy HD 60c-120c lipos and was wondering if the 90c Nanotech Ultimate lipos would make my car faster?

There's got to be a reason the burst C rate is not mentioned since all their other batteries and most other batteries I have seen have a specified burst C rate.

1967Typhoon

iTrader: (35)

What car and motor? Really high C ratings are most beneficial to stock class racers looking for high voltage and current throughout the whole main. Basher/Play rigs don't really need obscene C ratings. You won't notice any top speed improvement. Just a bit better torque, and more sustained power farther into the discharge of the pack.

tc4basher

Its a team associated tc4 speed run car running a Castle 7700kv 1406 motor on 4s. Current fastest speed is 126 mph on Turnigy HD 60-120c 5000mah.

I was thinking about trying 2 Turnigy Nanotech Ultimate 2s 6600 mah in series which should be lighter than my current 4s.

1967Typhoon

iTrader: (35)

The reduction in weight will help, not sure how much a going to a higher C battery is going to help though. I guess if the pack can help the voltage from sagging under load a little bit better than the older pack, it could possibly translate into more speed. I'm not sure it's really going to be enough of an improvement over the old battery to warrant the cost of 2 new packs. Plus Turnigy is getting more and more liberal with its C ratings, so without sophisticated equipment I couldn't tell you if the 90C is actually any better than your 60C.

And holy cow that is one fast TC4! My TC4 rally conversion is geared for about 45-50mph at the moment and that is a handful. Granted mine is set up with a much higher COG and softer long travel suspension, but I can't imagine how hard it is to fight the torque twist from a setup that strong.

tc4basher

Thanks for the insight man. During speed runs I have to roll on the throttle gently and smoothly or it won't want to go straight. I still want to go faster. Speed is addictive haha.

I'm thinking the extra mah of the Nanotech Ultimate can deliver more speed as well. I gained at least 15 mph switching from a 3000 mah to a 5000 mah pack

jslider

iTrader: (10)

not sure of the help of this but I have seen these packs in use and on a 17.5 buggy they make a difference from the turnigy a-specs to the ultimates there is a noticeable gain and the internal resistance on these packs are pretty low from what my buddy says as well. however he had an accident last weekend with 1/10 4wd buggy and broke an arm on his car texted me later saying the pack case broke as well so durability may be an issue or not, normally I would think at 120plus mph if you crash you will need a new car in any case.

and yes additional mah's will equal more power as your amps is an equation of c rating per mah

tc4basher

Its still baffling me why Turnigy does not mention the Burst discharge of this series. I really want to know before I pull the trigger.

tc4basher

If the ultimate series outperforms the A specs, that would be awesome. The world's fastest 4s record is 158 mph on Nanotech A Specs!

tc4basher

A friend of mine let me test out his 2 brand new Nanotech Ultimate lipos today.They were 6600mah 90c. I ran them in series in my tc4. Results were dissapointing.

I did 4 speed test passes and the results were 119, 117, 123, 119 MPH.

I then switched back to my Turnigy heavy duty series 5000mah 60-120c pack and did 3 test runs- 124, 120, 124 MPH.

Again I was quite dissapointed in the results. My guess is that the burst C rate on the Nanotech Ultimates is only around 100C?

Anyone have any opinions on the results?

phildoggg

iTrader: (24)

you want a good battery? get the nano-tech A-spec 65c. 4250. 5000 may fit but check size.

tc4basher

Whats up Phildogggg. I've been considering the A spec but I'm not sure if it would be worth it over my current battery. They seem very similar at least on paper.

Turnigy Nanotech A spec-65-130c

Turnigy Heavy Duty- 60-120c

raved007

iTrader: (36)

The Higher rating "C" more punch when accelerating and the higher mAh capacity longer run time.

tc4basher

So what rating usually increases top speed?