Team Kaizen - The Honey Badger

[Ocracoke]

More good news, the brushless motors turned up today. It is a bit smaller in length than a 775 motor but significantly wider.

DSCF6369.JPG

They definitely feel like they mean business, certainly weight 500g a piece but I now need to consider how to get the power to the wheels. I think a toothed belt drive might work here as a "simple" solution but I've never made a powered shaft like this, nor have I ever secured a shaft to a plate.

Am I right in thinking the "quick and dirty" solution is to get a shaft, two HDPE plates, drill a hole in both of them, run the shaft through those holes and then use a collar on either side to hold it in place, ending up with 4x collars? I guess for the pulleys, I'd need to flat off a little section of the shaft and then use a grub screw (or drill the shaft completely and bolt the pulley in place) to hold it in place? I guess the speed means a bearing in the 10mm thick plates might be needed here?

Alternatively, I suppose 2x pillow block bearings and drifting the shaft through them might be the more robust solution?

[Deathly Hallows]

Just catching up on your build and adventures in Manchester. Took ages so much happened and so many comments.
It was a shame how hard you got hit, when you are the most prolific contributer to these pages.
Looking forward to seeing V3.

[Maxamuslead]

any reason why you can't use the gearboxes from v2 ? or are you trying to leave them intact ?

[Ocracoke]

Just catching up on your build and adventures in Manchester. Took ages so much happened and so many comments.
It was a shame how hard you got hit, when you are the most prolific contributer to these pages.
Looking forward to seeing V3.

Thanks, these things happen and it isn't like I've not rebuilt The Honey Badger 2 in a rush before :P

any reason why you can't use the gearboxes from v2 ? or are you trying to leave them intact ?

The shaft on a 775 motor is 5mm, these bad boys are 8mm. I guess I could try and find a 9 tooth gear that goes on a 8mm shaft (not sure there is TBH) and then fashion up an adapter plate if the motor mounting holes don't fit, which is likely.

[Maxamuslead]

according to hobbyking it says it 8mm. You could try and find someone who is willing to turn it down to 5mm but I would make a custom gearbox similar to what you find in a speed 900 gear system (hardwired II)

Photo from hardwired II (Matt Smith)
BhVLZIQIQAAwfw2.jpg

[Ocracoke]

I was about to say, I've taken the Gimson gearbox apart on the poorly motor and I think I might be able to use the existing shaft (if I can bore out the pinion gear to 8mm) and lose a single stage of the gearbox. Once that is done, the extended shaft fits in the gearbox with the adapter plate to the 775 motor only needing a little bore out to make it fit onto the motor.

My next engineering challenge then :P

according to hobbyking it says it 8mm.

Do you mean the brushless motor I am using?

Also, I can't count, it is a 18 tooth gear, not a 9. In which case, according to gearsandsprockets.co.uk, I can get a MOD 1 18T to fit on a 8mm shaft. It definitely is promising though.

DSCF6377.JPG

[qbnut]

I've been using the gearboxes off the very Gimson motors you've been using with 4248 outrunners. Had to find a suitable pinion, but it mated pretty much straight on

[Ocracoke]

Sounds promising then. As described above, it isn't quite as straightforward fit with this motor but I've ordered a couple of pinion gears so I might have it running on these motors fairly soon.

[Ocracoke]

Well... one of them is kind of working...

Perhaps if anyone could advise me as to why the motor is acting the way they are, I'd be most grateful

[Roboteernat]

Have I just replied to this same issue on Facebook?

[Ocracoke]

I wouldn't have thought so, I don't have a Facebook account of any variety.

EDIT: Looking at a video which is kind of similar, I think I have a bad connection somewhere, which is likely given how pants my soldering is (despite doing plenty of this at Manchester with Chris from ARC Robotics :P). Will dig further.

[qbnut]

These look like the RedBrick 125A ESCs. You mention using a different hex file, is this labelled rb70a3?

[Ocracoke]

They are 100A v2 Redbricks, so using the rb70a2.hex file.I need to figure out how to use the kkmulticopter tool to reprogram it to give me reverse. I know it is a boolean switch from 0 to 1 but I can't figure out (yet) how to get the code to load.

[qbnut]

Ah, OK. Do you get the three audible beeps at different frequencies on powering up the ESC? I couldn't really hear in the video. If you only get two, the one phase is missing and that's the difference in V2/V3 pinout. I had the same at first on the 125A.

[Ocracoke]

I get 3 beeps when the power is turned on and signal is acquired.