scruffy

to put a taped thread into ally i just use a 2nd stage tap not really any different to normal, on the armour i used ally angle to brace the side

shapes the body a bit and made the lid

will need to loose 50g to get it under weight might have to change the lid for hdpe/polycarbonate

http://i1052.photobucket.com/albums/...ps33457271.jpg

http://i1052.photobucket.com/albums/...ps4f52409d.jpg

Drilling some holes would probably get you underweight. But that is such a cool little thing. Love it! Feel free to share any tips or things you learned on the beetleweight forum :)

finally got the lifter fully working would just lift the side of 2.5kg box but had no problem with 1.5kg also planning to make a aluminium/titanium scoop which should be lighter than the steel one

https://www.youtube.com/watch?v=uQuazMhq8IU

Wo how torquey does that look! Which servo is that?

Quote:

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Originally Posted by daveimi

Wo how torquey does that look! Which servo is that?

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The servo is a cheap 12-15kgf one off ebay

On another note I have started work on the beetle version of scruffy, pics to follow when more is done

ok actually now done enough to beetle scruffy to make it worth posting

http://i1052.photobucket.com/albums/...ps5d9bc096.jpg

http://i1052.photobucket.com/albums/...ps3d839fbe.jpg

im using a sabertooth dual 5a and 2x 500rpm motors which don't seem very impressive, i tryed shoving a 1kg cat food box and it really struggled compared to the 4wd, might change to the same brand as the version in my 4wd as they seem a better quality

i have a 17kg torque servo which will run the lifter, at present im doing some cad to work out the armour

Where'd you get those wheels they are well cool.
Can't wait to see progress on this :)

the wheels are just RC 12mm hex 64mm diameter

will hopefully get some of the Armour sorted tomorrow

on another note im looking at reusing the old scruffy chassis to try out some motors and might make it a hammer/axe bot

those wheels would look cool on me vorza

well everything was bought off ebay including the wheel adapters

i can post links if anyone's interested

finally decided on a name for my 4wd BW, which is ..................... glitch, i still have to add the external bec and finish off the replacement scoop but other than that its ready to go

ive also started building another fw might keep it a surprise for gls, mainly im trying out a different motor gearbox setup to the normal drill units

finally got the new Ti prongs made for my bw glitch not the nicest looking but they should stand a chance against all the spinners

will post pics soon

and here it is
http://i1052.photobucket.com/albums/...ps6e4ed57e.jpg

and a vid
http://www.youtube.com/watch?v=tjS3_sJaXIw

scruffy didn't do to well at whitwick, it somehow managed to cook the actuator motor and a relay in my battle switch so battle switch is now fixed and i have gone for a slightly lower rpm motor as i am aiming to get scruffy back to a 4s lipo to regain its speed and pushing power

my bw glitch did nicely but there wasn't much to fight and i now have plans to build a bw with 100mm wheels

on another note i have also started work on scruffy 3 and will probably have some ideas for scruffy 4 after gsl

Sounds good, your building robots faster than I can design them :lol:!

Are you coming to Portsmouth this weekend?

lol ive got about 3 or 4 other robots im working on and the next robot doo im going to is colchester at the end of the month last chance to test

Sorry about the lack of beetles, I was planning to be there but wasn't able to, and because it's a new class, Haz had technical gremlins and poor old Will had his hands full with 2 heavies and doing pit tours.

and his beetle tyres came off

since my battle switch is now knackered i decided to build my own using a servo board/diodes and a couple of 15a relays seems to work well and as a backup ive also made up a micro switch servo control as backup for the lifter

also i have got some new motors to run the actuator as the previous 1 cooked for no reason, there a tad slower so sould give me more control

and ive also managed to hammer out the dent little hitter left in the base

i have also started on a heavyweight using the wheelchair motors i got ages ago, so far mas a bit of sub chassis an attached the motor mounts. it will either end up LP pneumatic or so form of electric lifter in a scruffy ish shape

got bored on my day off after gsl so scruffy 3 has now started to take shape, i will probably have a gyro in this version

http://i1052.photobucket.com/albums/...ps4dd57cd0.jpg

http://i1052.photobucket.com/albums/...ps9c0d35a8.jpg

Ooooh can't wait, Scruffy and Night Fury did brilliantly at this years champs two very good machines

Did you end up managing to break Night fury in the end or did it just soldier on? Extremely tough machine, both of them!

And scruffy 3's looking great already too! Still think you should make it out of 7mm hardox instead of HDPE though ;)

That's not Hdpe i think it's mild steel

lol night fury will still run if i re attach a wire that got yanked in its last whiteboard

the new scruffy is mild steel tube cut in half, hopefully it will deflect the drum spinners better and if not it provides a good air gap from the electrics

the new night fury will begin in a few weeks time just have to calculate the new size to accommodate the thick hdpe and more powerful drive

bit of an update

scruffys coming along nicely just have to weld up the chassis

http://i1052.photobucket.com/albums/...ps552e1b92.jpg

http://i1052.photobucket.com/albums/...ps8d9c6faf.jpg

http://i1052.photobucket.com/albums/...ps32f156b8.jpg

found my large sheet of RG1000 that i bought from plastics direct, since its recycled UHMWPE and has similar properties it should make a good internal bulkhead/ motor mount for night fury which will be surrounded in 30mm hdpe
i should have enough rg1000 to make 2 sets of bulkheads which will allow me to test out the makita drives and if any problems occur i can then go back to my original ryobi drive setup

What do you use to cut all your metal? Disk cutter?

Are're those curved sides just inviting flippers and vert/drum spinners?

Quote:

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Originally Posted by Max

What do you use to cut all your metal? Disk cutter?

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i just use 1mm slitting discs on my angle grinder


also i had 10mm ground clearance on all my bots so flippers could get under easily enough, im hoping the curved edges will deflect thing better ...... at the mo each scruffy has been a trial of different body ideas so if it doesn't work i will go back to sloped sides like scruffy 2

Scruffy 2 looked like it could handle the punishment quite well, the curved sides definitely make it easier for things to get underneath but also might deflect a hit better than say just a flat panel, regardless of whether it's a sloped panel or not.

I think the curved sides is a good idea, I would imagine it will deflect the energy quite well.

well im hoping the curved side will give the drum/ vertical spinners less to dig in to

right bit of an update got the actuator fitted in and allot of the welding i now done

http://i1052.photobucket.com/albums/...psd0e86e80.jpg

http://i1052.photobucket.com/albums/...ps90e8eca6.jpg

http://i1052.photobucket.com/albums/...ps85bf7657.jpg

next i need to get its new face made and make proper mounts for the LED/eyes, make a few interchangeable scoops, make the top plates, mount everything, paint it and wire it up

oh and some how make some 20mm long spike out of ti or carbon steel with a m4-m6 tap so will probably have to be 15mm diameter as i can really trust the goth spike to hold up anymore

Looking good! The curved sides will work well at deflecting damage, but I would be mindful of drums for getting a bite - I don't know if it will so much with the fact that they are curved, but it'll definitely deflect a lot of the damage regardless!

Any plans for electronic upgrades or anything? I remember you mentioned about moving back up to 4S again back at the champs...

got a bit more done to scruffy 3 a have plans for scruffy 4

the top plates are only 3mm aluminium but i will be adding some 5mm hdpe to the and the front scoop will be more like scruffy 2s but probably wider, i will be going back to a 4s and adding a gyro so it will have the power of scruffy 1 with the control of scruffy 2 hopefully..... also the scoop will be interchangeable between a couple of designed

night fury 2 has taken a bit of a back burner due to needing about £50 of materials and the fact that its taking me ages to get my heavyweight and scruffy 3 going but as it will probably be the easiest build i will probably look at ordering the parts soon

couple of update pics


http://i1052.photobucket.com/albums/...ps242129d9.jpg

http://i1052.photobucket.com/albums/...psffc53c00.jpg

Does it run drill drives?

yes ryobi drills, its the original scruffy drive, same as night fury

Looks great, what are the dimensions thus far it looks really small

its 500mm wide, 300mm long and 170mm high excluding the prong scoop bit

What esc's will you be running? still going to be sticking with the cheapo chinese ones?

probably they have done me well so far and with a gyro in the mix it should improve the handling