AntWeight Parts Online & Offline

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josh
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Re: AntWeight Parts Online & Offline

Post by josh » Wed Mar 07, 2012 12:47 pm

ah, I've only ever ordered the 16mm ones, they are pretty grippy in the standard rubber compound and the marked grippier compound is slightly softer but in 150g it makes very little difference through all the comparisons I have made. I have used the Ninco 21mm shore 20A tyres, that are very soft, on my drive all day and they lack grip because even with the full weight distributed only across wheels it's just not enough. much better than dycem though. Tempted to order a pair of those fingertech wheels though, have you ever used them?

most scalextric tyres perform much better with some heat in them, which I looked into a while ago but I'm sceptical of the advantages it would give as soon as the rubber picked up some dust in the arena.
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Re: AntWeight Parts Online & Offline

Post by Andrew_Hibberd » Wed Mar 07, 2012 1:23 pm

Thanks Josh, I will see what I can find in the size I want.
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Re: AntWeight Parts Online & Offline

Post by Andrew_Hibberd » Mon Mar 12, 2012 10:26 am

I found this web site which has dimensions for most of the wheels. Hopefully I will get these in time to try out at the AWS.

http://www.getslotted.co.uk
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James
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Re: AntWeight Parts Online & Offline

Post by James » Fri Mar 23, 2012 5:08 pm

I've just got a couple of these motor hubs

Image
(attached to a motor to give some sense of size)
from
http://proto-pic.co.uk/pololu-universal ... -40-holes/

have been looking for something like these for a while, I've seen them on US websites but finally found somewhere in the UK that sells them :)

As they are made by pololu they use american sized screws, but the site sell them so its not too much of a problem.

I ordered them Wednesday evening and they arrived today. the hubs themselves were just under £5, the screws to go with them were about 60p and P&P was £2 so they are about the same price as the pololu wheels but mean you can attach you own wheels to them :)

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Remote-Controlled Dave
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Re: AntWeight Parts Online & Offline

Post by Remote-Controlled Dave » Fri Mar 23, 2012 9:09 pm

Awesome James, I've been wondering if something like this is available. They're like mini versions of the ones I have for the heavyweight. Means us lot who don't print our own can have more options than are currently available.

Are they heavy?
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James
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Re: AntWeight Parts Online & Offline

Post by James » Fri Mar 23, 2012 10:01 pm

Individually they weigh 3.2g each, but if you add the 4 screws to attach a wheel they weigh 4.6g each, this would be plus whatever wheel you decide to add to them.

In comparison the small pololu wheels(about 30mm) weigh 3.2g each.

so they're quite a bit heavier than using the polulu wheels once you've attached a wheel to them, but they do give you more freedom when it comes to what size wheel you use :)

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Re: AntWeight Parts Online & Offline

Post by Remote-Controlled Dave » Sat Mar 24, 2012 2:16 pm

Yeah, that's pretty good. I never really have a problem with weight. Not on the robots at least! :lol:
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Re: AntWeight Parts Online & Offline

Post by Andrew_Hibberd » Tue Mar 27, 2012 8:39 am

Looking for some advice on 2.4Ghz transmitters. I bought a DX6i a few years ago, but the price now is a lot more than I paid. Does anyone have any recommendations for a reasonable priced transmitter?

I am also looking some a cheap brushless esc. Robotbirds do a 6A one, has anyone tried this on 3 cells?

Thanks
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earthwormjim
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Re: AntWeight Parts Online & Offline

Post by earthwormjim » Tue Mar 27, 2012 7:01 pm

James wrote:Individually they weigh 3.2g each, but if you add the 4 screws to attach a wheel they weigh 4.6g each, this would be plus whatever wheel you decide to add to them.

In comparison the small pololu wheels(about 30mm) weigh 3.2g each.

so they're quite a bit heavier than using the polulu wheels once you've attached a wheel to them, but they do give you more freedom when it comes to what size wheel you use :)
I used these as wheels on "El Chupacabra",and they now reside on Raoul. They are great. I have drilled holes in mine,(to increase aerodynamics. :wink: )

I also used a pair of these as cams on the elastic axe thing. :)
Image

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terminaldamage
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Re: AntWeight Parts Online & Offline

Post by terminaldamage » Tue Mar 27, 2012 10:04 pm

Andrew_Hibberd wrote:Looking for some advice on 2.4Ghz transmitters. I bought a DX6i a few years ago, but the price now is a lot more than I paid. Does anyone have any recommendations for a reasonable priced transmitter?
If you don't mind doing a little soldering, I'd go on eBay and get hold of an old Skysport/Field Force 6 transmitter for roughly £10, buy a FrSky conversion kit and receiver for about £25 from GiantCod, wire it all together and get a 2.4GHz transmitter/receiver for £35-£40.

Some conversion kits have had their issues (my old Corona one, for instance) but myself and a few others have never had any problems with the FrSky conversion kit. The benefit as well is that all the transmitter functions (model memory, dual rates etc) are retained and can be used with the 2.4GHz kit in the same way as they were when the transmitter was operating on 35/40MHz.

A link for the conversion module and an 8ch receiver:
http://www.giantcod.co.uk/frsky-24ghz-c ... 05206.html
http://www.giantcod.co.uk/24ghz-frsky-r ... 05319.html
http://www.giantcod.co.uk/24ghz-frsky-r ... 04806.html (4ch, if you need something smaller for ants)

Just had a quick search on eBay and there are plenty of transmitters coming up cheap.
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Re: AntWeight Parts Online & Offline

Post by Andrew_Hibberd » Wed Mar 28, 2012 5:46 am

Interesting piece of kit. My old tx was a futaba 6exa, a quick search has said this should work on that. Has anyone tried this with the rx31 receivers?
Thanks

EDIT:

Looks like these will only work with the rx's they manufacture, I don't really want to have to buy more rx's to fit into the robots...
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Remote-Controlled Dave
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Re: AntWeight Parts Online & Offline

Post by Remote-Controlled Dave » Wed Mar 28, 2012 7:44 pm

I also used a pair of these as cams on the elastic axe thing.
Jim, I still want to see that in the arena sometime!

And that's just given me an idea, those hubs are perfect to make a very simple walking mechanism. Just like the one I had on Egg 2 Brutus but even easier!
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Re: AntWeight Parts Online & Offline

Post by earthwormjim » Wed Mar 28, 2012 10:01 pm

LOL. One day! :roll:
It is a weapon,with no means of moving,at the mo!
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Re: AntWeight Parts Online & Offline

Post by Andrew_Hibberd » Wed Apr 11, 2012 11:43 am

I am going to put a diode in parallel with my solenoid valves on anticide, however typical packages for 1n4001 diodes are huge compared to the valve. Is there a smaller package available or does anyone have any other recommendations?

Thanks
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BeligerAnt
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Re: AntWeight Parts Online & Offline

Post by BeligerAnt » Thu Apr 12, 2012 9:24 pm

For axial-leaded diodes you could look at the 1N4148 (aka 1N914), be careful though, it's a signal diode so I'm not sure about how much forward current or reverse voltage it can handle.
The only smaller alternative would be surface-mount SOT-23 or similar, although they might be tricky to mount without adding more size/weight than a 1N4001 :(
Gary, Team BeligerAnt

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