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[xtreme]

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im using the scorpion xl from http://www.xbotz.comwww.xbotz.com
get info here:
http://www.robotpower.com/products/scorpion_XL_info.htmlhttp://www.robotpower.com/products/s...n_XL_info.html

[antrock101]

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85 quid aint that cheap lol, woody suggested the bang bang system, i used to use this but is it still allowed as im not sure it would fail safe

[xtreme]

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try get 2nd hand ones, try james he might have some. i remember he did a few weeks back but no idea what they were, might have been too small for what you need.

[RogueTwoRobots]

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Stick a couple of failsafes (FS1, mtroniks etc) in between the servo and receiver, program them so that they failsafe with the servo touching neither switch, and ba-da-bing ba-da-boom, you got yourself a bang bang system that failsafes

[antrock101]

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what do you think of this battery

http://cgi.ebay.co.uk/Yuasa-Rechargeable-NP-2-1-Ah-12-V-Battery_W0QQitemZ330114274439QQihZ014QQcategoryZ14 951QQrdZ1QQssPageNameZWD1VQQcmdZViewItemhttp://cgi.ebay.co.uk/Yuasa-Recharge...QQitemZ3301142 74439QQihZ014QQcategoryZ14951QQrdZ1QQssPageNameZWD 1VQQcmdZViewItem

[psycho_fling]

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well block of wood runs on a 12volt one like that, 2 12v drill motors 100mm wheels goes pretty quick

[psycho_fling]

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just found this

http://cgi.ebay.co.uk/POWER-SONIC-12V-3-2Ah-LEAD-ACID-RECHARGEABLE-BATTERY_W0QQitemZ140119029960QQihZ004QQcategoryZ40 975QQrdZ1QQcmdZViewItemhttp://cgi.ebay.co.uk/POWER-SONIC-12...-BATTERY_W0QQi temZ140119029960QQihZ004QQcategoryZ40975QQrdZ1QQcm dZViewItem

bit more money but more AH

[RogueTwoRobots]

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Actually that second one is cheaper as well as having more Ah

Its got a higher postage certainly but since the price of the battery is not as much as the 2.1Ah one, it works out cheaper overall for the higher capacity battery

[antrock101]

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looks very heavy, just wanna get summat up and running for the guildford even then im gonan build my fw drive axe robot.... or maybe i shud wait lol

[antrock101]

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oh quick question has anyone got a spare servo for a skysports? if ya have gimmie a price gonna run my axe on the crude bang bang system

[big_nipper]

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Id be cautious of buying batteries from like these they will only casue problems, better to pay the extra few quid and get a known good one. cpc.co.uk do some good priced lead acid batteries that you be sure are in date.

The second one looks dodgy as a 12V battery that only reads 12V when not under load is nakered. The first is from a sercurity firm so even they claim its new the chances are its old stock and Pb batteries only have a limited shelf life.

Stock number BT00101 from CPC is £15.86 including VAT, same type as the first and if you spend over £40 delevery is free. Both Farnell and RS do the same battery and you can check what the postage costs are. Not sure but farnell used to do free delivery without minimum orders but this might have changed.

[geeza]

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Ant, Ive got several similar SLAs 12V 2.8Ah or whatever they are. Old but you can have them if you want, not going to post them however but I will bring them to the next event.

[Kenny]

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buy 2 7.2v nicads from a modelshop and take some cells out there something round 15 quid and will last ages and could be used to another robot in the future

just a thought...

[antrock101]

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ed that would be awsoume im at guildford event if u are?

[geeza]

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Should be, see you there.