Motorizing a Leather Patcher - Mounting the hub motor

We disassemble the "hoverboard" hub motor, fabricate an adapter and mount a small v-belt pulley. As usual, most things do not go according to plan - DRO goes crazy, center punch goes through the casting, misaligned holes, bad taps. Yunno... business as normal :)
The adapter is a piece of mild steel, not because it needed to be, but because I wanted some practice at machining steel.

[@riversvic]

One of the most hilarious events I’ve ever seen with a center punch

[@BreakingTaps]

Haha yeah, I was not expecting that to happen XD

[@kenjackson4177]

Love your channel, shows the mistakes and learning as you go. Other channels should also show the mistakes as well as the success.

[@BreakingTaps]

Thanks, really appreciate it!

[@davidelang]

did you consider just having the tire of the wheel rub against the crank? how slow can you run the wheel? and what is the max speed you want the machine to run.

[@KW-ei3pi]

Love your videos, your good humor, and humility. Great editing, music, etc. Thanks for sharing your learning experience. You have the perfect personality for these videos Best regards

[@BreakingTaps]

Thanks so much! Appreciate it! :)

[@a.z.c.681]

This is it? Damn it, I thought you will show us how to build an intergalactic rocket out of a Chinese patch machine! Maybe next time?

[@BreakingTaps]

😂

[@eyuptony]

Hi Breaking Taps. "Got the tee shirt". I have a Singer 29k patcher. I haven't used it much. What great engineering craftmanship in a sewing machine. Usually overlooked and never mentioned in engineering circles.

[@ravenhhca]

I have one of these Patchers and I like it. I am working on powering with foot power.

[@BreakingTaps]

Oh awesome, got a link to that? Everyone says the bobbin is super small and you end up refilling it often, have you found that to be true?

[@ravenhhca]

@@BreakingTaps ......Think bike peddles and chain. Bobbin is a bit small but will get the job done for patching. Here is a link to a long and short arm, small and bigger bobbin unit www.tolindsewmach.com/cb29.html

[@houseofbrokendobbsthings5537]

Yeah that saw vertical blade said - nope! The hand bandsaws are great from Porter Cable and others. Walk up to the lathe and get it done. I see the DRO is saving you loads of time centering! LOL! Yup end mill vs. drill = no contest Yeah I built my DRO board and did the capacitor tweak. Recalibrate and see if it changed. You need to edit my videos - your production quality is superb! I had to pause and watch the center punch again..... as noted before single funniest center punch I have seen. _Dan_

[@BreakingTaps]

Yeah, really need to spend a few minutes fiddling with the DRO. It's _just_ unreliable enough that I don't trust it, so don't use it for anything (except the Z, which seems to be rock-solid reliable). Think it's probably just the capacitor tweak that's needed. And yeah, that punch *shakes fist* Seriously wasn't expecting that to happen :) Thanks for stopping by! Keep up the great work on your channel!

[@ravenhhca]

Do you notice the difference between climb milling and conventional? Climb milling tends to pull the tool into the work. It is aggressive and should be done with care, if you must. You should notice a surface difference, also.

[@BreakingTaps]

Absolutely... on deep cuts it's very obvious. The backlash on the table makes climb milling impossible, you can see/feel it yanking the table around (had a few rather scary moments in the past when I didnt know better). I've been trying hard to only mill conventionally on any kind of serious cut. I admit I'm less rigorous when it comes to facing and light cuts :)

[@azaz-ty1bn]

My head hurts watching this. Ouch. I thought I did things the hard way. Simple wooden pulley bolted to the wheel, motor (HF 1 hp) has a hinge so it pulls the belt tight by its own weight. Job done. No the patcher is not cheap anymore. Selling for 200+, they wised up and saw the potential. Anyway, nice video.

[@BreakingTaps]

It's just the resellers raising prices, you can still find them cheap out of China (aliexpress, etc).

[@davidelang]

@@BreakingTaps I just got one via amazon for $120 but the HF 1HP motor is larger and heavier than this entire machine.

[@ravenhhca]

Did you consider machining the belt grove into the cast iron flywheel?

[@BreakingTaps]

Yeah, I really wanted to. But there's a groove on the interior for one of the arm bearings to ride against, and there is only a few millimeters of clearance between the groove and the exterior of the flywheel in a few locations. It might have been ok, but I was worried I'd break through while machining the groove :(

[@chrisnixon2179]

Did you include the diameter of Cutting tool when finding center

[@Roger-eh7ez]

Chris- It's actually an edge finder. To find a center point, you find one edge, zero the readout and find the other edge and divide by 2. it doesn't matter the diameter of the edge finder. If you need to locate a point based on 1 edge, you need to consider the edge finder diameter. You subtract 1/2 edge finder diameter.

[@BreakingTaps]

Exactly this. Should have been bullet proof: find one edge, zero, find other edge, 1/2 function on DRO, move to new zero which is the center. Which is why I think there is something with my DRO, since it should not have be so badly off-center :)

[@ravenhhca]

Did you get that foot power CAD drawing I sent you ?

[@BreakingTaps]

Huh weird, thought I replied to this but apparently not. I did, thanks! Sorry for the delay in responding, been a busy few weeks around here lately :) Let me know if/when you build the foot pedal setup for your machine

[@ravenhhca]

@@BreakingTaps ......I will........You can also re-purpose an old belt driven sewing machine foot treadle, if you can find one. Or bicycle crank and chain.

[@ravenhhca]

Being a a DC motor....you could control the speed with a PWM unit.

[@BreakingTaps]

Yep! It's a brushless motor (just in a hub configuration), so it'll be driven with an ESC + PWM signal. Just need to embed the PWM generator into a foot pedal and it should be pretty plug'n'play :)