Post battle analysis and repair

[team death]

Fault diagnosis.......

Last week was the first real event at Robodojo this year with full combat and sportsman events taking

place so I took driller queen and danger UXB with Project fear as a spare.

So Driller Queen was playing up something chronic and there was no visible damage to the Robot-

forwards and backwards was sort of okay but turning left or right was a real struggle.

The problem I discovered after a full strip down at home was very specific to cordless

drill motors left un modified by grub screws/clutch hack.

I leave my drills with the clutch as is but the screws holding the clutch cover in place

had come loose giving the effect of been on a very low torque setting-maybe 4 or 5

compared to setting 13.

In theory this could still happen even if you grub screw the clutch but the screws would

have to come very very loose.

The repair I used was to tighten the screws and melt weld the casing of the drill to the

clutch housing, because of the unique way I fix my wheels on it would not be possible

to fit grub screws as an afterthought.

[Roboteernat]

It sounds like you could do with a couple of new casings for the drill gearbox. What model do you use as i may have a few spares of the outer casings.

[team death]

Hi Nat

I'm using Draper drills blue with red caps-they are very short on the body.

At the moment the tightening of the screws seem to have done the job and considering those

motors have had dozens of fights (originally they were in Piece de resistance ) this problem only

just cropped up last week.

I will see how it goes Nat and bear your advice in mind.

[Roboteernat]

Fair enough, If they are similar to black and decker or bosch type, witht he screw on face plate then i should have some. will see if there is a pic in the thread to compare in case for the future

[team death]

After loaning Project Fear to Brad at the last Robodojo sportsman and it getting a bit

of a pummeling,I have finally got it battle ready again with a few modifications.

Brad commented on how easy it was to drive during an event so no change needed there

but the hammer always seemed quite slow compared to other axes and hammers.

After beefing up the bodywork I decided to address the hammer speed issue which

I have done by altering the ratio from the motor to final drive and it is shockingly

quick now-Project fear is back-be afraid!.

[Theo]

Looking forward to it! Should be good to see you and everyone again at the next one, I was a little bit ill last time right before my train (not the rona), so fingers crossed this time it'll be alright! The Team Death bots - the Piece De Resistance FW especially struck me as lovely to control as it glides across the arena happily. What roster are you bringing next time?

[team death]

Hi Theo

Great to hear from you again.

I always have high hopes before an event-the Robots seem to work so well before receiving a

bashing but that's the game I guess.

I shall be bringing Project Fear/driller Queen and driller Queen Extreme.

Rather than add another post here's the pictures of Driller Queen Extreme before

it gets a bashing.

DSCN0470.jpgDSCN0474.jpg

[team death]

After my latest Robodojo excursive I have decided to address my Achilles heal on all my Robots-

namely the slipping clutches, yes I never did the grub screw hack to lock them in place!.

So after a poor showing with Robots not showing their full potential I have decided to do the

hack which will not be easy as I have welded axles into the drill chucks which are still attached.

This will also reduce the weight of the Robots as each chuck weighs around 300 grams.

[Roboteernat]

If you can still unscrew the gearbox frim the motor half, you can remove the gears and thread the holes from the inside of the gearbox to then put the m5 grub screws in.
Just leave them shy of surface by 2mm that should be enough to lock the gearbox.
That's how you can get around your welded shafts.

[team death]

Thanks Nat I will see which method is best tomorrow and hope to get every Bot done.