heavyweight ram bots?

[dgr]

Re: heavyweight ram bots?

Yeah, Wilhelm's Scream was a rambot and made the second round of the UK champs. None of the heavies I've built have been with active weapons and they've all won fights. It did run on NPC motors rather than wheelchair ones, though we have successfully used wheelchair motors in other heavyweight rammers (most notably the first Cabrakan), and I have a couple lying around that I plan to use in a second heavyweight soon.
Very much a place for them, as long as you're in the weight limit, any new heavy of any ability is always welcome.

[mattsdragons]

Re: heavyweight ram bots?

who did you end up winning against?

also, and pics of videos of it?

[dgr]

Re: heavyweight ram bots?

Well, it was less a case of winning, more a case of survival of the fittest sometimes
I managed to drive Cabrakan one to a flukey and pretty unsporting victory against Apocalypse, which I never let Ed forget. That fight is here:

http://www.youtube.com/watch?v=qIzQjvSl ... ideo_title

Anger (sort of) held its own for a good long while against Scorpion and Big Nipper in this fight:

http://www.youtube.com/watch?v=RGwkaJGM ... ideo_title

Then Wilhelm's Scream managed to hold out for a second place against Meggamouse, Mantis and White Knight at the O2:

http://www.youtube.com/watch?v=gvrifQLR ... ideo_title

And was one of only two robots still moving at the end of a fun battle with Tilly Evo, Tiberious, Bullfrog, Disc-Truction and Wilhelm's Scream, once I'd fixed my wheel issue, but I can't find a video of that one.

There are plenty of robots without active weapons that still perform brilliantly. Saint springs immediately to mind. It has an active weapon of sorts, but doesn't use anything other than the two drive motors to power it.

[mattsdragons]

Re: heavyweight ram bots?

Wilhelm's Scream is certainly one of the more unusual heavyweight ram bots out there

[dgr]

Re: heavyweight ram bots?

It shows what someone with very little engineering skills can accomplish. Think I'll build a new one now though.

[mattsdragons]

Re: heavyweight ram bots?

any internal shots of it?

[mattsdragons]

Re: heavyweight ram bots?

any good uk or american ram bots that were sucessful? (appart from tornado and storm 2)

[typhoon_driver]

Re: heavyweight ram bots?

nope, you have the good uk ones there, no idea about american bots

To build a decent rammer you have to use decent motors, used a couple of eteks in my last one that were underpowered because the travel on the spektrum tx limited the speedos. Even with this limitation and being on 24v instead of 36v the bot still pushed others around very easily

[mattsdragons]

Re: heavyweight ram bots?

So the key is either powerful motors or Bosch 750's with a good reduction?

[jonny]

Re: heavyweight ram bots?

the key is powerful motors. you're not going to have a very good rambot if it moves at 5mph. storm 2 uses lem 130s i believe and runs at 25mph so if i were you i'd aim for 20+ mph and use eteks. lem 130s are hard to find now and cost over £1000 pounds each where as eteks are much cheaper. the new etek r (replacement of the original etek) costs $470 from robot market place. i have also found a very high power motor that looks suspiciously like an old style etek popping up on ebay alot:

http://cgi.ebay.co.uk/8000watt-DC-gener ... _782wt_907

[blazerbotics]

Re: heavyweight ram bots?

but big motors need BIG speedos and BIG batteries!

[terry]

Re: heavyweight ram bots?

storm2 has a specialist esc but their batteries are only 36v a123 x 4 packs giving 9.2 amps, same as what i use except im on 32.4v ( 1 cell less) hmmmmmm maybe i could upgrade aswell !

[jonny]

Re: heavyweight ram bots?

terry, how much are your a123s discharged on an average fight? i was hoping i could get away with 2, 10 cell packs

[blazerbotics]

Re: heavyweight ram bots?

Its not just a matter of how much capacity you have left, more packs means current available.

[jonny]

Re: heavyweight ram bots?

meant 3 packs^

the cells i'm using have a continuous discharge of 30c so i'm hoping they'll be able to discharge enough current for 2 bosch 750's and a solenoid valve