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-   -   Aircraft & Space grade 3300`s cell`s (http://www.rctech.net/forum/electric-road/13995-aircraft-space-grade-3300%60s-cell%60s.html)

Wild Cherry 02-26-2003 01:02 PM

Aircraft & Space grade 3300`s cell`s
 
Heard some team driver`s at the Snow Bird race had a major voltage advatage, more than 20% extra voltage from these cells....

Some tried to keep up by turning up the timing but they still could not match these aircraft grade cells performance advatage....


Now I want some too !!!:D

popsracer 02-26-2003 02:07 PM

Aircraft & Space grade 3300`s cell`s
 
This would be great as it might put the 3300's on a level footing with 2400 NiCd's. Only problem is $$$$$

gotpez 02-26-2003 02:16 PM

The rumors at the Snowbirds were that some had GP3300's with 30 amp voltage numbers of as much at 1.19. This is not a 20% difference since cells with 1.14 to 1.15 are readily available.

By my calculations, this is only a 4% difference. Still significant, but not 20%. At 20% these cells would have an average voltage of nearly 1.37 volts. This would be equivilant to running an extra cell. I did not see speed differences of this magnitude.

Sounds like the tale gets better as it passes around!!!

ScottyP 02-26-2003 02:30 PM

Lets not let the truth stand in the way of a great tale!

After all, this represents an excellent reason why the pro's are always so much faster than everyone else. I don't suppoose it could possibly have anything to do with their superior driving or set-up ability?

As for 'aircraft grade'... in five years as an avionics technician dealing with batteries all descriptions from a variety of aircraft I never came across anything all that special. The only thing they're concerned with is reliability, not 'performance'.

Scotty

JDM_DOHC_SiR 02-26-2003 02:57 PM

I have to agree with ScottyP..on this one.. 12 years in the A/C industry and I have yet to to see any military grade stuff that it's cracked up to be...:rolleyes: :weird: ..... I military also has it's sare of "Crap" that it gets...:smile: :nod: :rolleyes:

-Dave:sneaky:

Brian McGreevy 02-26-2003 03:03 PM

Still guys, lets not get off subject. Anyone who can put that kind of HP on the track will notice a difference even between 1.14 and 1.15. 1.15 and 1.19 would be a huge difference and would defintely account for cars being faster. As Mike Reedy said after the snowbirds, "we got out batteried!".

JDM_DOHC_SiR 02-26-2003 03:14 PM

As far as these #'s that are higher... these are GP's/Power 3300GTR's right..??? You can get pretty good #'s on the GTR's @ 30A the norm is 1.16 ~1.179 but I have never seen a 1.19:eek:

this is getting intersting.:D :nod:

-Dave:sneaky: :weird:

Concillian 02-26-2003 04:17 PM

I heard that GP sent out some DOGS (like batches that were all 1.12 and 1.11), that some of the big the matchers sent back and eventually GP sent out some higher grade batteries to the matchers. The result was some abnormally good cells.

That is pure rumor, but if it's the case, you probably can't expect more anytime soon, which could really mess with some of the major competitions.

You can't use the cells marked for other industries, since the ROAR rules specifically state that cells must have hobby industry specific shrink wraps on them. ROAR legal cells are specified by the manufacturer's shrink and it's highly likely any special industry batteries just have plain shrink.

Kraig 02-26-2003 08:42 PM

Nope, GP improved their cells. If you look around Pro Match and SMC are claiming to get cells in the 1.16 range. Now not all of them are 1.16 but you should start seeing them soon.

Remember back when we were in awe at 1.16 cells at 20 amps? :

EAMotorsports 02-26-2003 09:01 PM

Quote:

Originally posted by Axiom5B
Still guys, lets not get off subject. Anyone who can put that kind of HP on the track will notice a difference even between 1.14 and 1.15. 1.15 and 1.19 would be a huge difference and would defintely account for cars being faster. As Mike Reedy said after the snowbirds, "we got out batteried!".

Mike Reedy has no room to talk...He had mod motors that were prototypes and NOBODY else had. Whats the difference between motors no one has and batteries that no one has? NOTHING

ea

JimmyMac 02-26-2003 09:21 PM

Who cares. It wasn't a Roar Race....

Grizzbob 02-26-2003 09:49 PM

I also agree with Scotty, I work on avionics too(from passenger aircraft), including some backup power supplies that use NiCd Sub-C cells for power. Believe it or not, they only use 1200mah cells(in 20-cell packs) despite the technology that we now have access to, & the manufacturer seems to have no interest in switching to any higher capacity cell. I have to wonder if they're afraid to spend the development time & money testing a new cell for their purposes, when they still get what they need from 1200's...:spidey:

BigDogRacing 02-26-2003 11:47 PM

Trust me, the expert guys strapped on a lap with those new batteries. I was there- I saw it. Go look at the Expert 19 turn qualifying. That's where Danny's batteries really shined. You'll notice there are a number of guys who picked up quite a bit in the second and third rounds. Also notice the guys like Kinwald and Baker (not SMC spons.) didn't get a LOT faster.

sosidge 02-27-2003 03:24 AM

Didn't Danny already say on this board that GP have improved the cell, and those high voltage cells were the first of the new batch - they should be on the market very soon...

dtm 02-27-2003 04:33 AM

Quote:

Originally posted by Grizzbob
I also agree with Scotty, I work on avionics too(from passenger aircraft), including some backup power supplies that use NiCd Sub-C cells for power. Believe it or not, they only use 1200mah cells(in 20-cell packs) despite the technology that we now have access to, & the manufacturer seems to have no interest in switching to any higher capacity cell. I have to wonder if they're afraid to spend the development time & money testing a new cell for their purposes, when they still get what they need from 1200's...:spidey:
Very true...the batteries you find on your average aircraft is definately pretty low grade Nicads.....at high grade prices!


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