Feather weight database

Something to tickle your fancy.

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Remote-Controlled Dave
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Post by Remote-Controlled Dave »

Simon, when is Someone's in the Kitchen with Dynamite gonna come out and play again?
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muchalucha
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Post by muchalucha »

ive used sla's for ages , ve got acces to some teeny tiny 75AH slas (whoah!) gona use those , but unil i get a bit more monies im going to stick wiht the nicads
Fight or flight ... ?

...suicide
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BeligerAnt
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Post by BeligerAnt »

Simon Windisch wrote:I used an SLA from a fire alarm system. It was rubbish. Stick with NiMh or NiCd at the least.

Simon
There are 2 types of SLA battery.

The ones for fire alarms are designed to be float charged for 99% of the time, and only need to provide a moderate amount of current when they are finally called into service (usually when the fire has destroyed the mains power into the building :o )

Then there are the high current types (think car battery) which are designed to provide huge currents (200A to crank a cold diesel engine :o ) for a short period of time, then get recharged slowly, discharged again, recharged, etc

Add to this the fact that all batteries have a finite lifetime, and ex-fire alarm batteries are thrown away because they have (almost) reached the end of their useful life, and you have the answer to why an ex-fire alarm SLA is no good for powering a featherweight robot.

SLAs have their place in the battery world, but these days NiMH or Li-ion can provide a better energy density.
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teamocean
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Post by teamocean »

Here are our new feathers for 2009 as well!

Name: Whirlpool EVO
Weight: 13kg
length: 45cm
Width: 54cm
Height:7.5cm
Drive: 4x 18volt Drills
Power: 24v 3700mAh Ni-Mh
Speedos: 2x Scorpion XL
Radio: Spektrum DX6
Armour: 3mm Ti, 20mm HDPE, 5mm Polycarb
Status: Built and ready for Rebel Robots

And...

Tidal Wave 3
Weight: 13.6kg
Length: 50cm
Width:50cm
Height:20cm
Drive: 2x 12v Drills
Power: 14.4v Ni-Mh
Speedo: Sabretooth
Radio: DX5e
Weapon: Full Pressure Flipper with 60mm Bore ram!
Armour: Mix of 5/10mm HDPE with aluminium frame.
Status: Got all the parts just got to start putting it together
Will Thomas
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Remote-Controlled Dave
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Post by Remote-Controlled Dave »

I love Whirlpool. Has it changed much for the EVO version Will?
I remember last year's Barnsley when I had my terrible robot Hoodrat, and you had Aftershock and you're link came out and I survived you're constant attacks.....lol, I enjoyed that. :D
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teamocean
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Post by teamocean »

:) I remember that fight, the arena flipper got my link right at the end. it was a good fight though i'll have to try harder this time round :wink:

Whirlpool EVO looks almost identical to the old one just with a new chassis (the old one had suffered as a result of over 2 years of service and almost 90 fights in total) the upgrades inside give around a 1/3 more speed and even more pushing power. And of course it wouldn't be whirlpool without plenty of blue LEDs :D
Will Thomas
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Simon Windisch
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Post by Simon Windisch »

Someone's in the Kitchen with Dynamite will return Dave, with all new wheels and custom-built gearboxes.

Simon

P.S. Thanks for the info Gary. Also, I lost 1kg when I switched from SLA to NiMh.
Remote-Controlled Dave
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Post by Remote-Controlled Dave »

Someone's in the Kitchen with More Dynamite? lol
Custom gearboxes....new chassis.....hell, even blue LED's are too technical for me! :D
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leo-rcc
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Post by leo-rcc »

This year Hannibalito 1 and 3 wil get a new axe wielding brother:

Image

Image

No name yet, but the parts are accumulating nicely.

Image

Home made gears made by a fellow Dutch roboteer (Jeroen, builder of Tough as Nails)
Best regards,

Leo van Miert.
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razerdave
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Post by razerdave »

Very nice :) I was wondering how long it was going to take you to build an axe FW, I'd heard you were a fan on axes
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