SAW-US, A Build Diary

bitternboy · Post by **bitternboy** » Tue Oct 29, 2013 9:48 am

Hmm... I just happen to work for a company in the science park. I might have a sniff around and see if this is something they might consider

Sportball · Post by **Sportball** » Tue Jan 28, 2014 8:54 pm

bitternboy wrote:Hmm... I just happen to work for a company in the science park. I might have a sniff around and see if this is something they might consider

Hi Jonathon (Bitternboy) did you managed to find anywhere in the Science Park? I really want to bring my son along to an event but every event I have seen has been at least 2hrs away.

bitternboy · Post by **bitternboy** » Fri Jan 31, 2014 5:02 pm

Hi

The general concensus is that yes, with the right procedure they would probably provide a venue. The problem is that I've never organised an event before and and am pretty busy. I would therefore likely make a hash of it

Also, if I were to run an event it would need to be before July as that's when I leave to go and do my degree.

If someone offers to give a fairly substantial hand in the matter and there was enough interest then I would be happy to give it a go

Sportball · Post by **Sportball** » Tue Sep 22, 2015 7:40 am

Good day to you all. I have just returned from a great day at the Colchester Robot Wars World Championship. My son is now totally enthralled (again) by all things robot wars and I have decided that this may be a good time to get our Antweight back together. Only problem is I have an issue with the batteries again.

The Lipos have been left for a year and are now refusing to charge. Can I use a 9V rechargeable lithium for now? The kind you see in a smoke alarm! I am reluctant to spend any more money on Lipo batteries. I may never compete so weight is not an issue.

I was talking to someone on Sunday (after an incident with a soldering iron) about the lack of events close to East Anglia. I would like my son to compete but I have not seen any regular events close to home. Is there any kids nearby that would like to meet for a battle? My son is 7.

All the best..

Rapidrory · Post by **Rapidrory** » Tue Sep 22, 2015 10:47 am

Yeah, those 9v batteries should be fine depending on the motor controller you're using.

Sportball · Post by **Sportball** » Tue Sep 22, 2015 12:06 pm

Many thanks, I am running a sabretooth.

Roboteernat · Post by **Roboteernat** » Tue Sep 22, 2015 12:26 pm

There are very cheap Lipos about, Hobby king sell suitable ones with oistage for£5 if that. Postage being the most, and as you have a charger, then you are ready for many hours of running as apposed to 1 or 2 before buying a new 9v PP9 style.

Sportball · Post by **Sportball** » Tue Sep 22, 2015 12:36 pm

Thanks I was just considering that. Can you please recommend something? Maybe a turnigy 180mAh 2 cell! I am happy to pay another £5-10.

Do I need to ensure it is charged before I store it? It may be something we only use occasionally and I don't want to replace the battery again in 2 months.

Rapidrory · Post by **Rapidrory** » Tue Sep 22, 2015 12:53 pm

Theoretically yes, but I've just dug out a lipo i haven't done anything with for 6 months and it's still fine.. Some of my bots regularly sit without charging for a month or two and I've not yet had an issue..

peterwaller · Post by **peterwaller** » Tue Sep 22, 2015 1:58 pm

As Rory says LiPo's normally retain their charge over long periods.
Most times I have had this problem is when I have run them too low or left them switched on.
Many chargers refuse to charge batteries once they get too low.
Here is a suitable battery they are quick delivery from the UK shop but P&P is £5.26 so I usually buy two or three at a time.
http://www.hobbyking.com/hobbyking/stor ... ouse_.html

RobotWars101

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