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Sounds like you've got it all pretty much planned out, regarding the Optipower Lipo, could you possibly downsize slightly and go for the 4300mah 6s? i doubt very much you'll be able to use that much in one fight if it's just running your weapon and it works out around £77 with the discount.
Could do Mario, sticking with the TZs for now purely because I have them, but if I need to save weight it's certainly an option!
The Optipower lipo is something I'm still debating, will leave enough room for something really chunky in there (actually leaving room if I can for a pair of 6s Lipos and then a 4s for drive if I can just to allow for a little bit of room in terms of future upgrading... Really, the only reason for that sort of capacity is to make sure I've got both plenty of available amps for the motor so it will work to its full, but also because (or so I'm told) if you don't discharge the batteries as highly, it gets less voltage sag which leads to a little more speed on the motor. Theoretically, anyway.
Also because I fancy another crack at the Gladiator hahaha
Minor HW2 update as well, I'm sticking a pair of speed 700s in that with a 6:1 ratio which should hopefully work. It's getting a pair of HDPE bulkheads and a tiny little disc (and a new name, Ghost of the Navigator) and will probably be a whiteboard machine. It's really just a bit of an experiment, but should be cheap to sort after I've done the drive. HardWired 3 will take up the reins as the new super bricky thing, probably. Same design and all (bar some slight size changes to get brushless drive in there easier) but just thicker and higher grade armour. Because that's definitely what it needed!
Really, next port of call now is to track down some offcuts of Hardox 650 (or higher?) Toolox and that Grade 5 Titanium bar... may be a long search!
I thought Hardwired 2 was great, just needed the drive-a-bility working on and it would have been up there.
It's the difficulty in sourcing 900 sized motors that has forced the change i believe, it needed better shock mounting, grippier wheels and more weight over the wheels as well but it is a brilliant little machine. The speed 700's ideally will need a 2 stage reduction to get the performance you want from them, if i remember Savage/Prodigy evo used them for it's drive so it might be worth a look around to see if you can find any pics of it's system.
Wonder how a Speed 700 compares in performance to a Torpedo 850?
It had a few faults, which need to be resolved and it'd lead to almost a complete rebuild, so I thought whilst I'm at it I'll get some more armour on there, get using the remaining 4kg I have in a more effective rammer! The old one might be nicely suited to a disc sort of arrangement on the front, purely seeing how Enigma gets on in the raptor class- gives me something interesting to do with the chassis too!
The motors will probably struggle a little, but as long as I keep them ventilated and don't go too mad I might be alright. Truth be told it's not that far off the setup I used to have in it, and that worked fine - the motors were only just warm after spending entire matches spinning, so I can hope at least. It will be even faster though, if my numbers are to be believed...
And from what I'm led to believe, the speed 700s are a lot better than the torpedo 850s
Pretty sure speed 700s are high revving. As in, vastly higher than the clone s900s you had in there before. Also not sure if they are happy beyond 12v, they're optimised for that voltage range. Also they are timed for one direction, I think. I'd be surprised if they ran the robot at all happily. Torpedo whatchacallsits would be a safer bet, possibly cheaper and unless the bolt pattern is different to s900s essentially plug-n-play.
Torpedo thingumys seemed to have about as much power as a cheese sandwitch from what I recall. Pretty woeful given the size and cost.
s700s have 11600 rpm no load at 12v. They can be run up to 19.2v
The Speed 700 bb Turbo is 11600rpm at 12v but as harry said can run up to 19.2v, there are a few different models of that motor which range from racing motors up to around 19,000 rpm at 9.6v to the bb turbo, i think with a 2 stage reduction those would happily run a feather.
Yeah, I remember someone trying to use a pair as drive and saying they were really weak motors, not good for drive...
12k rpm is not actually that far off what I had, if I remember rightly I was getting about 2000rpm on the wheel with those 51mm motors on a 4.5:1 reduction, with a 6:1 reduction on a set of S700s, I'll be looking at around the same on 3S which works nicely for me. It'll be better when I have the weight balance sorted by way of adding a disc mechanism and grippier wheels, but should just about do it.
Will certainly push the motors to their limits, but with enough air for them to cool down, they should be fine I reckon.