Ah ha. I thought there might be a way. Thanks Voicecoils.
I'll look into it.
I suppose with a 20s pack the C rating could be a lot lower if I limit the max amps to 60 still. I could even go as low as 5C, which would also save $$$.
You can't select the C rating that specifically - 15C is the lowest you can get, then its 20, 25, 30 etc.
The lower the C rate the more voltage sag you'll see, which limits your top speed a touch.There's actually not THAT much difference in the physical size of the packs and I was suprised to find the 30C packs are actually one of the best in terms of power:size ratio. It depends on the brand too, some are physically bigger than others. But if you're cramming as many packs in there as you can then the lower C rating packs probably don't get noticed much anyway, as they'll only be working around 2-3C much of the time.
15C zippys are 142x50x45mm
30C zippys are 146x53x53mm
20C turnigys are 152x50x51mm
(all 6S 5000mah)
You can fit a number of 30C zippys standing up along the inside of the fighter frame where as the 20C turnigys don't fit - so while they're 2-3mm narrower you have to orientate them different to fit, which ultimately can mean you'll fit less in overall.
The other consideration is how to parallel all the discharge and balance tap wires - which I'm in the process of doing now and it makes the job quite tough.
Jamming a heap of bricks in there is one thing but wiring them all up in series/parallel is A: hard and B: space consuming. It also has to be done in such a way that the sub packs can be inserted and removed if necessary
Yeah they are a good intermediate tyre for mixing the road and dirt as I do quite a bit. They are however quite LOUD.
I like the DMR moto RTs. They're a good mix for both offroad, are reasonably quiet and quite balloony/chunky looking.
Haven't cracked 60C on the new stator yet.
I measured one of my hubs the other day with an IR thermometre, measuring both the surface of the side covers and the windings (through air cooling holes)
After a fairly constant moderate load (high speed riding on the flat) the side covers were 60C but the windings were 95C. Using my 'hand thermometre' 60C feels pretty damn hot and you can't tough the side cover for more than a second. So if you're seeing much over 60 at the side covers I'd start taking it easy.