Optipower Ultra's for testing.

[Guest]

In answer to the posts above, the 50C range (true 50C) in comparison to 30C cells we think will offer slightly improved voltage hold in extreame applications. The average pilot will probably find little diffenece but we are testing currently to establish exactly what the benefits are. We know they run very cool indeed and we know on discharge the voltage holds well but they are heavier. We will run with 10 awg wire as anything bigger just gets too difficult to solder.

Guys like Ben flying speed events will probably feel the benefit as they run high current loads for a long time but even speed flying only has 1 or 2 seconds bursts at 300+ amps then back down to the more mundane end. We hope to get some data from Bens machine in due course which we await with interest. For most of us 30C is more than enough I suspect.

Andy

[Jamin_00]

I have to reduce my throttle curves when running these packs.

When checking the data last night they increased my RPM by around 150rpm!! So instead of running 2300 for that flight the log shows between 2400-2450. It did sound friggin awesome though I have to say

This logging stuff is awesome on the Kosmik

[Guest]

Hi Guys

The ULTRA 50C cells would do 50C if you could actually pull that much, you can't as pointed out in this thread. The question is why bother the answer is ever growing power hungry motors and more extreme pursuits such as speed flying and ever more powerful EDF jets.

A 50C cell gives the average pilot no benefit at all a really good quality 30C pack is all you would ever need. Where the benefits lies is in voltage hold in extreme flight and temperature hold and in turn these will lead to better cycle life on applications where packs are stressed such a speed flying, EDF jets, and very hard 3D with ever more powerful set-ups.

So does the average pilot need to move up to 50C, probably not, are there down sides to 50C yes, they cost more and are heavier. Are there any other differences yes, the packs now in common with our new breed of 30C packs do not have the split connector on 5000mAh + packs (this remain available as special order) and both packs have heat dissipation plates built in which also makes the packs stiffer and less likely to be damaged in a crash. We will offer a 5000 6S and 5300 6S.

The range will be: - 21503S, 40004S, 43005S, 47005S, 27006S, 35006S, 43006S, 50006S, 53006S and 53007S.

Someone asked about wires, OPTIULTRA Packs will have 10awg silicon delivery wires which fuse at around 333 degrees C if you do the math’s you can’t get there on a standard machine and if we went for wires that could take 50C they would be 4awg and you cannot solder them. Plainly the benefits are as noted above.

Everything else is the same, 50% crash back should you damage one and no quibble warranty. ULTRA 50C will start shipping in late November as we have some further field work to complete and a little more bench testing.

I hope this is of assitance any other questions please ask. I will be at the champs for those who want a chat or to look at testing data.

[Guest]

I have to reduce my throttle curves when running these packs.

When checking the data last night they increased my RPM by around 150rpm!! So instead of running 2300 for that flight the log shows between 2400-2450. It did sound friggin awesome though I have to say

This logging stuff is awesome on the Kosmik

Thats the voltage hold advantage shows Ben, if you look at the logs in comparison the the 30C logs you can see the voltage hold improvment and its that improvment that holding up your RPM almost exactly by 150RPM when you do the maths!!!

[Jamin_00]

I plan to be out again on Sunday so will run the 50C's some more with the Kosmik'd TDR and provide more data. I have my pitch at set at 14 and the rpm at 2300rpm. High I know but im running lighter blades now so that will not put as much load on the head.

[ghost2212]

Is there any discharge curves for these packs at different C? I couldn't find any in this thread

[discoferret]

Can we have an update on how these packs are doing? Im in the market to get 4x 5000 for my goblin and was going to try them out?

[swale]

Wow...heeeaavvyyy

[stocksy27]

Do we have officail weights on the 50c 6s 5300? It says 925g and the 6s 50c 5000 say 865g but there actually 830g i avoided 5300 as quite a bit more weight?

[Peper]

Do we have officail weights on the 50c 6s 5300? It says 925g and the 6s 50c 5000 say 865g but there actually 830g i avoided 5300 as quite a bit more weight?

That is exacly my question...
reading from the manufacturers website in my experience is very innacurate...don't know what scales they use but both Gens ace and Turnigy A-spec weigh is not as per the websites.
Interested in these optipower but it would be nice to have some weight reports rather then website figures

[Zeeflyboy]

Optipower Ultra's for testing.

That is exacly my question...
reading from the manufacturers website in my experience is very innacurate...don't know what scales they use but both Gens ace and Turnigy A-spec weigh is not as per the websites.
Interested in these optipower but it would be nice to have some weight reports rather then website figures

Can't speak for the A specs, but the Gens Ace 6S 5000mah 45C batts I just recently got were pretty accurate - the website says 782g and mine were 775g average (without connector).

[Peper]

Funny that you mentioned,

Just checked Gens ace website and their weight looks accurate
surely Giant Shark messed me up with the net and Gross Weight tables before, but A-spec weight is way off! I can get you some pictures of them on my scale....
7g on a 6S5000 isnt great deal, but when we go to the 3S 2200 range it does make a big difference in the CG of the little helis and planks...

[mattie-lodge]

Hey Guys,

I'm at the work at the moment and I have a set of 6s 5000mAh 30c packs and the same but in 50c Ultra packs. We have a calibrated set of scales here which I've checked both. The photos are below.

Between these two packs there is little weight difference, so to get the stronger packs the Ultra's would seem a good way.

Hope this helps


Opti 30c

Opti 50c Ultra

[Jamin_00]

Can we have an update on how these packs are doing? Im in the market to get 4x 5000 for my goblin and was going to try them out?

Yes, I still have the pre production packs as well as production ones now.

Rather than me spout what some might call sponsorship bullcrap or what Im effectively paid to say, how about I actually fly them in Spunky and show you the logs off how well they are still going from the Kosmik with that massive motor???

[Peper]

That's What I was talking about....
Now someone please tell me that Matt's post isn't better than any website figures

Thank you Matt, they aren't Heavy at all, I am now seriously interested in these packs.