LzREngineering

I'm currently using the Nosram Ultra LCG 5500 pack, I think it's a great format and just so happens to fit perfectly on my chassis. I'm wondering if anyone knows of any alternative brands that make a battery in this size?

Scott R

iTrader: (49)

Reedy Zapper SG 3600 and 4000 mah are 18.5mm high

LzREngineering

Yeah there's lots of low cap slimline shorty packs around, I'm looking for full length (139mm l x 47mm w x 20mm h) packs.

Darkgenerals

iTrader: (71)

Trackstar makes some, however they are 23mm.

Does something like 3 extra mm make that much of a difference?

LzREngineering

23mm is the standard LCG battery height I think, so there's a good range of batteries available. However the extra 3mm really does make quite a bit of difference to the C.G. (probably more so than the new 'ultra short' shocks do Vs standard shocks)

So far I have only seen the nosram/LRP ultra LCG packs, which offer decent performance but I'm wondering if they're as powerful as some other brands.

urnotevenwrg2

iTrader: (1)

I'd like to see those calculations, because I would bet otherwise. Why don't you chop those offroad looking shock towers off your car and see for yourself? That 3mm difference in pack height is much closer to the center of gravity than the weight of the shocks and shock tower, which means that weight has a much larger impact on performance. Why do you think short shocks were a thing way before lcg packs were a thing?

LzREngineering

I've measured the cg on my very old TC (long shocks, high upper deck etc) with the ulcg battery as 27mm - as good or better than most modern cars. That is with about 50g ballast on the chassis Centreline to make up the weight due to the ulcg battery being lighter.

I thought LCG packs have been around for a few years now? The ultra short shocks only became popular last year.

urnotevenwrg2

iTrader: (1)

You said the difference between a 20mm thick pack and a 23mm thick pack is more than the difference between short shocks and regular shocks. I doubt that.

Xray had short shocks in 2013.

​​​​​

LzREngineering

Either way, the battery height will make a significant difference to the cg. But this is going a bit off topic, I'm just looking for ULCG battery choices. I guess the 20mm high packs aren't yet popular enough for the smaller battery builders to justify having them in their product range?

urnotevenwrg2

iTrader: (1)

The difference in the two packs would change your cg .25mm.
​​​​​​
​​​​
​​​