First Time Bot Builder/Buyer

[xtreme]

if i was to do away with a steel chassis idea and go for 8mm or 10 mm polycarb like Electric Blue do you think it would be suitable for a featherweight rambot?

[xtreme]

After you have read my previous post what do you think of this?

motors - £28.80 - 4x 9.6v drill motors - gimson
wheels - £7.00 - 4x 100mm Wheels - gimson
removeable link - £4.19 - 30A Removeable Link - gimson
battery - £20.00ea* - ?x 9.6V 3700mAh - ebay
speed controllers - £100.00* - unsure - Technobots/xbots/ebay
radio gear - £50.00* - unsure - Technobots/ebay
LED - £3.00* - unsure - Technobots/ebay
Charger - £10.00* - unsure - ebay

* means unsure of price

can anyone help out buy filling in my unsure spaces and about those batterys are they good enough and how many would i need or would you choose other batterys? anything that my stand out to be crappy or not right let me know please.
if anyone had any second hand parts that would take the places of things listed i would be interested. anything else you can think of that i might need?

[teamshock]

Hi Tom,

My robot whirlpool is very similar to your idea,the chassis is 10mm polycarb and so far has stood up quite well to the battering.

I use 4, 9.6v drills identical to the ones from gimson but I overvolt them to 14.4v.
Batteries- 2x 7.2 ,3700mAh Ni-Mh packs wired to give 14.4v.- We got these from model power for around £15 each.
Speed Controllers- Scorpion XL (xbots sell them)- great speed controller- £85
Radio Gear- we tried the cheap technobots 4ch set but had loads of problems with reception which is why we bought a spektrum.
Charger- X- Peak charger from model power £60 but does many different types of batteries.

Will

[geeza]

Tom, its 12.5mm square box. Got all mine at the time from B&Q. But there are much cheaper places.

[xtreme]

will how did you fix the poly carb together and what motor mountings you using?
you got any more pics of the bot? like progress pics or anything?

[xtreme]

so would this 12V 3700mAh be better than using a 9.6 for me and would just 1 run my bot?
http://cgi.ebay.co.uk/Radio-Control-Battery-Pack-12V-3700mAh-SC-NiMH-Compact_W0QQitemZ300107153813QQihZ020QQcategoryZ34 063QQrdZ1QQcmdZViewItemhttp://cgi.ebay.co.uk/Radio-Control-...MH-Compact_W0Q QitemZ300107153813QQihZ020QQcategoryZ34063QQrdZ1QQ cmdZViewItem

[teamshock]

Tom,

Theres a pic on my profile of how it was a few weeks ago, the batteries inside it were 12v 3700mAh so they should be fine. I found that in the end I didnt need to use 2 as 1 pack would run it for about 1/2 hour.

The chassis is just tapped and bolted together and the motor mounts are the same as the ones James Baker sells. They are cut down though because the height of the body is 5cm.

As for progress pics to see how the chassis was made have a look at Ewans site as it is what used to be Action. http://www.micro-maul.co.uk/action.htmlhttp://www.micro-maul.co.uk/action.html

Will

[xtreme]

Started Spending! ! !. paid for radio gear, motor mounts and speed controller so far.

[xtreme]

what should i do for a 12v charger for a 12V 3700mAh battery with tamiya style connector?

[ewan]

http://www.modelhelicopters.co.uk/acatalog/Chargers_Hitec.htmlhttp://www.modelhelicopters.co.uk/ac...ers_Hitec.html
One Hitec CG340

http://www.modelhelicopters.co.uk/acatalog/Chargers_Various.htmlhttp://www.modelhelicopters.co.uk/ac...s_Various.html
One power supply, either O-IP2000 or O-IP2004 as labeled on this page should do the job.

You could change the connectors on the packs yourself to Anderson power poles for example or buy some Tamiya connectors to connect the lot together as-is.
http://www.modelhelicopters.co.uk/acatalog/Chargers_Leads.htmlhttp://www.modelhelicopters.co.uk/ac...ers_Leads.html