Out of interest Ewan, how did you approach your CNC sponsors? Did you have a contact there?
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Out of interest Ewan, how did you approach your CNC sponsors? Did you have a contact there?
I looked via the internet at different CNC companies around Bristol (my city) and I found this company to be the best in Bristol, the whole south-west even! I put together an email package with information on team history, and what we hope to accomplish in future.
I put together a 2 minute movie with all the previous robots included, and sent this off to the sponsors. Yesterday I went to their workshop/warehouse and looked about their stock etc. I also showed them the remains of all my robots... I try to be as professional as possible with my appearence to sponsors, and I try to fill every thing they wanted when they first decided to sponsor me. Now I have three sponsors, Ive decided to stop looking for more, I do not need any more...
+ James, yes, that was the idea, to stop teeth flying off...
Cheers, Ewan
* the best CNC company in Bristol
it does depend on what your teeth are made from however we personnally have never had any problems with hardox teeth welded to a steel ring. After series 7 they only require a slight sharpen after all the hits dished out.
well done ewan, if u can get big companys behind you now, imagine what you will be like in 10 years time :)
Yo Ewan you should come show off your bot in Monmouth. Were just over the bridge from you.
well done ewan, if u can get big companys behind you now, imagine what you will be like in 10 years time
Ed Hoppit???
Mr Stu - Runs!
Nice one Stu!!! :)
LMAO @ Stu. Damn, I wish we had some CNC companies close at hand, but hey, the closest would be around 200km.
What if I can become Ed hoppit now :)
(I am looking into different steels for the disc, so exact specs on the material I choose will come soon. I am currently doing some CADs for the body panels and sections, and soon Ill do a picture for the weapon mounts/setup).
I say just stick with the brick ewan. If u try and add a drill powered disc (which i am doubting will be effective) no offense or anything then it may cause more trouble than its worth and not do much. The brick is a good design with the wedge. Spinners need to do huge damage to kill then and it can slam robots all over the place.
I am going to add this. It does have potential as a weapon. The WHOLE weapon setup will weigh only 2.0kg (using the weight saved from changing the chassis & armour to 10mm aluminium all over). The old steel chassis weighed WAY too much for a featherweight, and was armoured way OTT in areas. I dont think many spinners will stand a chance of going through 10mm aluminium anyway (I am using the same construction idea of tapped holes all over holding the chassis together as http://www.teammadcow.com/alos.htmhttp://www.teammadcow.com/alos.htm this robot looks amazingly well built, and his is only around 6kg).
The whole drive system will be exactly the same, so itll still push/ram as it used to, the only difference being the disc can be used as a weapon while pushing...
Be warned tho ewan, good as alos is, the drilling and tapping technique doesnt translate up the weight scale well- welding is considerably stronger, and, as the guy who built alos will attest, it takes one decent hit and all the holes are knocked out of alignment. If youre using 2014 thats not such a problem, as its inherenly more stiff, but its something you should be aware of if youre using a 6XXX alloy.
Yeah, Ive taken that into account, but the way that Micro-Maul evo 1 & Micro-Maul evo 2 are built means the top and bottom polycarbonate panels add to the twisting strength of the robot. Any hard hits will have to break the polycarbonate/shear a load of bolts to do anything.
I have seen that Alos only uses a carbonfirbre top, not designed for much structural strength. I guess the only way to test it is to but it against a load of spinners...
& thanks everyone, I have taken all of your comments into account with the finalised design of the disc.
Cheers, Ewan
Hello, im also making some kind of disc weapon (like belladonna, only its a vertical spinner).
Id like to use a 24 v ev-warrior for the weapon, but, would I need 2 or would just 1 be enough for a featherweight?
One EV Warrior motor would be fine for a featherweight alot of heavier american weight classes use one or two EV Warrior motor for a decent weapon so one is fine.
Chris - http://www.featherweights.org/forum
ok, thats nice :). Also, would one 24 v 3Ah pack be ok, or could i use something a bit less? like 2.4 Ah ni-cds?
2 Ah, 12 v would be enough for 2 drill motors, i guess.
2400 cells should be fine.
can you use fan from cars as spinner motor, or is it to weak?
Car fan motors can be awesome depending on the car that it came from, people keep on telling me that some BMWs have a motor made by Lynch that will put out 3Hp at 24V but I dont know how reliable that is. I do know that Aaargh uses a car fan motor to power its disc with great success.
Joe Townsend
(apologies for any incoherency or bad english, I am completely off my pickles :proud:)
car fan motor spinners over in australia are a regular thing.
they have a fair bit of power, around the 600w at 24v range and you can also use heater motors from cars. they also have a good output.
you will find though that some fan motors (if not most) are pancake motors with a spinning plate instead of a shaft. i believe someone on this forum has a wedge type robot with a bar on it that uses one.
ive also heard that BMW motors are lynches joseph, but they also cost a ton brand new. ive not managed to find any places that deal in BMW used parts.
audi 100 fan motors sound quite powerful as well ive heard.
overall the fan motors arent the most powerful thing on the planet, but are easy to mount and use and have decent power.
hope that helps
The larger fan motors Ive seen are 600W 12V, which is 2.4kW at 24V, which is much more acceptableas a spinner power source :-)
We are currently running a Briggs & Stratton motor in our feather weight. I believe its around the 3Kw mark, maybe more on 12v.
u spinner fanatic aaron :). i heard from somewhere that tantrum uses a fan motor for its awesome shell or whatever it is. It depensds really how u use them but they do have a nice bit of power in them and when used right u get one mean spinner.
Eddys correct. The fan motors from the Audi 100 will peak at about 600W at their rated voltage.
BlacknBlue uses a heater blower motor. Its a 12v motor from a bus. At 12v it takes about 3amps no load and 70 amps when stalled. We run our disk at 24v on it. Its been rebuilt three times now and has been supercharged with special magnets
Ive put a picture of the new rebuilt NV BlacknBlue on my profile
The new BlacknBlue looks great Rob.
I think the most important thing with spinners is to keep the whole arrangment stiff and true- if you do that, you will reap the benefits. I would say that its as important as the motor.
Yeah i find a big, stiff one can be really impressive just look at Eds Vortex for example really well handled and always gives a top performance.
Looks good Rob! Lets see if you can kick some ass with it now.
Chris I think we should be more careful about how we phrase our openeing sentences. You might give people the wrong impression :-p
LOL.... best post ever there Chris. :P
I re read the post and go this far before laughing my head off.
Yeah i find a big, stiff one can be really impressive just look at Eds
I might just leave this thread for afew days :proud:
Dont forget that its really well handled and always gives a top performance. Hmm?!
Anyway, the new BlacknBlue looks great and well built! Hope I dont meet it sometime soon. Or any other time for that matter...
Well soon as i seen Eddys post i had to comment on Eds stiffness and performance because Vortex is a great example of keep the whole arrangement stiff and true and you will reap the benefits. :proud:
Chris - Mr RAnts - http://www.featherweights.org/forum
My God! What is this world coming too!
*Runs and Hides*
Mr Stu
Yeah Stu, what is the world coming too? Should I mention you doing the Macarena dance at the weekend? :P
there aint nothing wrong with the macarena chris! :)
Ive been known to do the odd dance myself.......
LOL... its just kind of disturbing.
I dont think hed been drinking either... :P
At a robot event yesterday I found a problem with vertical spinners no one else has talked about. My robot has a vertical spinning bar powered by an EV Warrior at 12V. The first impact on my opponent was fine, but the second was too good. The torque from the EV pulled my robot over forward and caused me to flip myself. Kind of hard to explain so heres the video of the fight.
http://www.websamba.com/hellfirelabs/agg_vs_mar.wmvhttp://www.websamba.com/hellfirelabs/agg_vs_mar.wmv
Solution- better support under the disc. Ive seen plenty of vertical discs that crash themselves downwards into the floor in an impact. Good support is paramount. That way you get all the energy going into your opponent.
lol go to http://www.hellfire-labs.s5.com/home.htmlhttp://www.hellfire-labs.s5.com/home.html and have a look at the aggressor.
it does come much more supported than that.