Thanks for thatQuote:
Originally Posted by MicroGravity100
And good luck with your build :)
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Thanks for thatQuote:
Originally Posted by MicroGravity100
And good luck with your build :)
New photos of it on my Photobucket account
In other news, new profile pic is Metalbeak logo
looking good atm.
the motors need to be mounted a bit better i think
i bet turning is a right pain though, how big its it?
It turns rather well actually.
Height: 16.5cm Width: 45cm Length: 59cm
Did somone make the logo for you or give you permission to use it or did you just steal it from http://fav.me/d2eqpp0?
I'm just using it to have someting interesting on my feather, I found it on google images.
big fw ftw :proud:
Have fun keeping it in weight at that size!
This size isn't final, I'm trying to find any way of reducing it. The width includes wheel guards, width at the moment without wheel guards is about 32cm.
geting rid of the rubbishy 12 sla and getting a 18v nimh pack is probably a good idea
agreed, will save you alot of weight
nothing wrong with a good old SLA worked for block of wood :)Quote:
Originally Posted by harry hills
yeh, bruiser runs with a SLA, it lasts like 3-4 battles, and it can be treated really badly with no damage... and there cheap
the predicament: due to the large size jarvis will most likely struggle to keep his robot in weight
the solution: reducing the robot size as much as possible and using lighter components such as using nimh instand of sla
Just what I was thinking, rambots will most likely not suffer from the weight restrictions as much as pneumatic bots will so can probably get away with it in them. Gotta look at each bot individually before giving advice people :lol:Quote:
Originally Posted by jonny
Thanks for all the input towards saving weight, but it seems that the SLA will have to go...
But I managed to have a bit of a hands-on session with Metalbeak today, very pleased with the flipper, and the rest of it too, but no wheel guards unfortunately, have to save as much weight as possible:
http://i1234.photobucket.com/albums/...0/S1260001.jpg
http://i1234.photobucket.com/albums/...0/S1260002.jpg
Also managed to get the new wheels on the motors, have been wanting to do that for ages, and it seems to drive well although it needs a couple of ball casters to make for easy steering, but it will be a squeeze as it weighs 13.3Kg at the moment...
http://www.youtube.com/watch?v=_3Xi9biseYo
Driven by Planet T5 2.4GHz Transmitter & Reciever - pretend you didn't read this Haz, I will get a Spektrum, just not yet, it's already costing far too much.
Current Specs:
10mm HDPE Base and Back:
http://i1234.photobucket.com/albums/...0/S1260004.jpg
8mm HDPE Sides and Flipper:
http://i1234.photobucket.com/albums/...0/S1260006.jpg
4mm Aluminium Struts & Stregtheners:
http://i1234.photobucket.com/albums/...0/S1260005.jpg
3mm Aluminium Flipper Scoop & Link/Dump Valve Cover:
http://i1234.photobucket.com/albums/...0/S1260003.jpg
http://i1234.photobucket.com/albums/...0/S1260009.jpg
http://i1234.photobucket.com/albums/...0/S1260007.jpg
2mm Mild Steel Plate underneath Flipper to add strength
2x 12v Drill Motors for drive; may upgrade to Gimson Motors eventually
1x Haze 12v SLA Battery, may substitute for a NiMH for weight if necessary
holy moly :shock: looks awesome
thats nice.
what are the dimensions, it looks massive
Edit: whats that circuit next to the relay do?
Thanks, I thought it looked pretty neat too.
It's quite large, hence the weight problem:
Height: 16.5cm
Width: 38cm
Length: 59cm
The circuit next to the relay is a Voltage Doubler, reduces the current and ups the voltage to 24v from 12v, because the Solenoid switch needs 24v to open.
I though they wernt alowed in a bot at all?
did you build the voltage doubler?
and are you using electronizes for the drive?
Matt: Just did a search on the build rules, nothing in their about Voltage Doublers, looks like it's alright.
Ben: No, I got a professional engineer (my Grandad) to build it, damn thing's far to complex for me! Yep, 2x Electronize 15A for the Drive, you can't see them because they're underneath the pneumatics.
How did you attach the panel that hides the link and dump valve
well done jarvis, love ya for getting a spectrum :proud:
its going to be a pain to steer though, the wheels arent best placed.
looks awesome.
If I may make a suggestion Jarvis:
a: Get 24v of NiMH's for the same weight as his SLA
b: Get rid of that voltage booster, its one more thing to break
c: On a spektrum transmitter, turn the rates down so you get 18v to the drive, 24v to the solenoid. It will give your drive a bit more oomph without cooking the motors, and allows you to fire the solenoid without the need for a booster.
Haz: It drives OK actually, but as I said earlier, it needs a couple of ball casters to help it steer easier.
Billy: The panel covering the Dump Valve and Link it attatched by a screw that rotates on a spring.
Dave:
a: I have been thinking of upgrading the battery, but at the moment it has already cost far too much and I can't afford to keep buying more stuff. If I have too, I will buy a 12v NiMH, but only as a last resort to save weight.
b: The voltage booster was built to withstand supersonic conditions on a jet, I'm sure it will be fine :lol:. Anyway, I won't just leave it unprotected, there will be a case for it as soon as possible.
c: Again, the cost of upgrading anything, even the transmitter is out of the question right now as I don't have endless supplies of money :(.
Looks awesome, and very well made. Well done.
Hmm, a 4200mAh 13.2V 4S liFePo4 pack weights 512 grams. Cost £30
A 20 cell 24V 4500mAh NiMH pack weights 1.5 kg. Cost, about £75
I believe the voltage booster wins.
We use a voltage booster in the Hannibalito's. (upps the voltage to 36v) Meaning we can do well on 4S LiFePo4, 10S NiMH or even 3S LiPo.
Currently, we use 4S A123's. Weight for the pack, 300 gram. Good for 1 fight.
Bit late, but, what the heck!
http://i1234.photobucket.com/albums/...00/Skyfall.jpg
UK Champs in April went great, Metalbeak is now renamed to Skyfall, a much better name, named so because it literally falls from the sky when it self-rights, plus as many people pointed out at the champs that it sounded like the name of a crusher (hint).
Skyfall has been resting recently with Project X, the 6WD Gimson driven box with bendy scoops, coming to events in its stead.
http://i1234.photobucket.com/albums/...ity100/pic.jpg
Skyfall will make a triumphant return for Maidstone, but then probably break again or something, it happens a lot :roll:
Made a compilation of good moments from the champs (mostly entertaining Self-Righting):
http://www.youtube.com/watch?v=-tIzbzod3RY
Also includes my only win of the whole 3 days, even though I had no weapon :)
Day 1
Fight 1: Venom
http://www.youtube.com/watch?v=TRnPOHnIv_8
Well, I was doomed from the start: Friday 13th :lol:
Besides this, I was supposed to fight Capt. Scarlett, the 06 champ, in my first fight, but it had been destroyed the other day and I ended up fighting Venom. There's a reason Razer won so many trophies, it was AMAZING, and now I know what fighting it felt like. Also, I found out Skyfall is exactly the same long as the pit is wide, so I had no chance of getting out! Three words are all I need to say as a comparison for this draw: BUS REPLACEMENT SERVICE :rofl:
Missed just one flip, and uoside down, there was nothing I could do, and he pushed me in the pit.
Fight 2: Beauty 3 & LF3
http://www.youtube.com/watch?v=ALU9KHL6Ir8
The less said, the better... I shouldn't have driven straight at him...
John, think only this of me... I'LL BE BACK TO GET YOU! :lol:
Fight 3: Dizzy Tilly & Tiny Toon
http://www.youtube.com/watch?v=rYqzm_-O8lg
For once, not my fault! Hooray! When I went over, you can see the powerlights go out, then come back, then go out again when I try to self-right. This was because the Tamiya connector on the NiMH was too small, this is because the site I bought them off sent the wrong ones... Damn you internet monkeys!
For the rest of the day, the flipper had liquid in the pneumatic system, and I couldn't work out what to do, and after much advice from many who know more than me (should narrow it down a bit more shouldn't I? Everyone seems to know more than me...), I blasted the system through, and it worked, cleared the system completely, and it worked fine the next day...
Day 2
...as is apparent from my golden moment, about 20 seconds into this vid:
http://www.youtube.com/watch?v=oTTsHYV_OtI
Sorry Johnny 2x4, but you got in the way :twisted:
Not sure when, but one of the gearboxes locked up and after being tought how, and having a spare gearbox lent to me by Will Thomas (thanks) I fixed it, but then soon enough, I lost the other one in the last fight of the day, and didn't realise until the next day as I had no power in the batteries in the fight, and my only method of transportation was to hop around using the flipper as propulsion, it worked too, and the crowd loved it!
Day 3
I managed to free the other gearbox and then I saw the state:
http://i1234.photobucket.com/albums/...y100/photo.jpg
I then dug the other one out and managed to bodge the gears back in place with a pair of large tweezers and use it, and it worked a treat too! They both still work, tested it the other day, and it should have no problems at Maidstone. After Queensferry (every bone in my body says SCOTLAND but I know its in Wales...) Skyfall will go back in the shed for some Speed 900 goodness... be afraid, be VERY AFRAID.
See you all!
The homemade one wasn't producing enough current, so I bought one of these before Barnsley. Thanks anyway.
I did love it's self right at the champs!
Forgot to mention, now upgraded the radio gear on both Skyfall & Project X to Hitec Optic 6 2.4GHz sets:
http://www.modelsandhobbies4u.com.au...0optic%206.jpg
A tad on the expensive side, but worth it! Works really well, haven't had any transmitter problems at all, except of course my inablity to read the manual (it's written in RC Helicopter speak :roll: )
Haha, that was too funny seeing the match against Venom. Bit of an own goal! xD
Do you know the difference in ground clearance between your flipper and Venom's base? Looked pretty close.
Skyfall has a zero ground clearence at the front, but thats not the problem; there was no sharp edge at the champs, so i couldn't get under anything!
i am impress