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hey guys after 3 years out of the scene im coming back, some of you might remeber me on the orginal rw forum or antweights 101, well im coming back to building and have a few questions.as im building a push bot for guildford then moving to a axe
questions
woddys helped me alot but i caqnt seem to find a decent motor for an electronic axe any ideas?
also wat amp speed cntrolers do i need for 14.4 volted drill motors
regards ant
Ive been called many things .......but woddy is a first!
Both these sites can supply suitable controllers.
http://www.xbotz.com/http://www.xbotz.com/
http://www.gimsonrobotics.com/shop_rc-speed-controllers-sabertooth.htmlhttp://www.gimsonrobotics.com/shop_r...abertooth.html
(Message edited by woody on May 20, 2007)
ur my only woddy tho ;)
oh sorry i noticed the spelling mistakes lol
try the new motors from technobots i use the 280w one for my axe works well
gold motors?
no these 24V 280W MY1016B2J1 1470-020
just looked at ur set up its pretty similar to the idea i had lol any chance you can tell me wat sprockets you used and how u got the sprocket onto the gear?
That was my first attempt I now use a 12 tooth sprocket on the motor and a 50 tooth sprocket on the axe. It is alot better at tacking the shock when the axe hits something.the chain is 8mm
anyone know how to take the screws out of a drill chuck ive tried everything looked at various websites, i manged to fix one and get the chuck off but the other one is so stuck, any ideas?
ant
If you fancy buying a new screw then you can drill out the screw with a regular drill bit (i believe a 4mm is best). Eventually the bit catches on the screw and as it is left hand, merely spins it out leaving you with an intact left hand thread inside.
tried it just broke my drill lol ah well ill just buy some :) thanks
btw anyone know the cheapest speed controllers i can use for 14.4 volts im short on money till after my first event
you can try Leos speedoes (i do but on 12v)
about £20 each posted
called little blue ones i think lol
or if you have loads of money then see james baker for a sidwinder
or scorpions :)
do they come with wiring instructions?
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
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
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.
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
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
well block of wood runs on a 12volt one like that, 2 12v drill motors 100mm wheels goes pretty quick
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
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
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
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
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.
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.
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...
ed that would be awsoume im at guildford event if u are?
Should be, see you there.