fleas

All things small and scratchy.

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Remote-Controlled Dave
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Re: fleas

Post by Remote-Controlled Dave » Mon Jun 24, 2013 1:10 pm

Its awesome! I wonder how spinner proof it is though. And have you factored wheels into the weight? Lol
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alasdair
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Re: fleas

Post by alasdair » Mon Jul 01, 2013 5:14 am

Update!

Image

We got the battery plug working, and there is still enough weight for the wheels and a bit of carbon fibre armor!

Image

Here is what we did with the plug. Pretty simple in essence, but difficult due to size and space constraints! It was a simple matter of connecting the two cells into a battery, then we took some crimp pins from an old plug, soldered and heatshrunk them onto the wires, and then used a motor wire with two pins to replace the speedo input. Luckily we just fit it inside, and he is all working. Now we just need to wait for the wheels to arrive and get some armor on him and he is ready for fighting!

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EpicentrE
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Re: fleas

Post by EpicentrE » Mon Jul 01, 2013 8:13 am

I love to see people pushing the boundaries of what can be fit into the size and weight limits - great job!
Scott Fyfe-Jamieson, Captain of Epic Robotics. Champion of AWS38/41/42.
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razerdave
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Re: fleas

Post by razerdave » Mon Jul 01, 2013 9:59 am

Nice work mate :).
And here's me trying to keep normal 2WD fleas in the weight limit!

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peterwaller
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Re: fleas

Post by peterwaller » Mon Jul 01, 2013 10:58 am

Yes I agree even when I have put tracks on a flea I have always only used 2 motors.
Hope you can get the wheels and armour in the weight limit I would like to see that in combat. (not necessarily against me :roll: )

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Re: fleas

Post by haz » Mon Jul 01, 2013 11:04 am

Good stuff mate :)

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Remote-Controlled Dave
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Re: fleas

Post by Remote-Controlled Dave » Mon Jul 01, 2013 3:06 pm

Outstanding
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Re: fleas

Post by alasdair » Sun Jul 21, 2013 8:26 pm

So the new Flea is done.

Naturally, I have finished redesigning the entire chassis within the hour.

I am happy with it, but I know I could probably do better with time. The new chassis is slightly wider and longer so it can incorporate side armor also, but the current design is what we will be running at AWS next week!
So here he is in his current form, Salt:

Image

Image

Image

The front scoops are made from 2 mil HDPE and carbon fibre, and the top plates are also carbon fibre.

Why Salt you ask? Because the next one is going to be called Pepper of course.

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Re: fleas

Post by alasdair » Sun Jul 21, 2013 9:13 pm

For those interested, here is the new design:

Image

The one on the right is the current robot chassis, and the left is the new design. It has a top plate also.

As you can see it is slightly larger with tabs for affixing sides and an extended front plate. There is also a lot more space inside, and most of the walls have almost halved in thickness so it will weigh the same if not lighter than the current design.

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Re: fleas

Post by haz » Sun Jul 21, 2013 9:15 pm

Quit making us all look bad :P

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Re: fleas

Post by alasdair » Sun Jul 21, 2013 9:33 pm

This is just about a year of stifled robotic creativity being unleashed in a small space of time. I will most likely run out of steam after about a month and end up returning to the days of drilling holes in my robot the night before to get it underweight.

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Re: fleas

Post by Remote-Controlled Dave » Sun Jul 21, 2013 10:47 pm

Superb. Seriously, top notch work guys! Its got champion written all over it.
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Re: fleas

Post by peterwaller » Thu Jul 25, 2013 8:51 am

Just ran into an unexpexted problem with Deflea. Up to now it had all been going well if lacking a bit of grip so I finally bit the bullet and put lint roller rubber on the tracks. This greatly increased the grip but I found the the standard lego drive wheels which just have a slot to keep the tracks on were slipping inside the track under load conditions. The tracks themselves have teeth that sit in the grove but there is nothing mechanical the engages with them.
The solution has been to design a new drive wheel that seems to work well.
Image

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Re: fleas

Post by Bigconkers » Thu Jul 25, 2013 10:40 am

EpicentrE wrote:I love to see people pushing the boundaries of what can be fit into the size and weight limits - great job!
I find it amazing. i am so impressed too. I will admit I was never really taken with the smaller side of the fighting machines but i am being sucked right in.

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Re: fleas

Post by alasdair » Tue Jul 30, 2013 1:47 pm

Well, the new flea performed abysmally. It lost its only two fights within about 30 seconds. It is clear that he needs some quicker motors. The new chassis also incorperates sides.

I have ordered up some 10:1 ratio motors so he will go from abysmally slow to ridiculously fast. This is a good change in my eyes,

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