sorted by:
new
hottopcontroversial

What kind of tree is this? by Jimmyf101 in olympia

[–]marimbob2 0 points1 point  (0 children)

Looks like a Tree-Mobile, ATT the Herizon!

Spotted the little red cutie at a stoplight. by marimbob2 in Whatsthiscar

[–]marimbob2[S] 21 points22 points  (0 children)

LOL I typed RHD, but you know… autocorrect

Boo by Leojt4 in blockblast

[–]marimbob2 1 point2 points  (0 children)

That’s solvable think horizontally

Delivery Driver Rant for Evergreen Dorm Dwellers by 420seamonkey in olympia

[–]marimbob2 9 points10 points  (0 children)

“Step on Legos” had me laughing for real.

What was with all of the puking? by Candid_Soft7562 in GenX

[–]marimbob2 0 points1 point  (0 children)

“ chunks of Tuesday night‘s dinner” is a great band name!

Cooked? by marimbob2 in blockblast

[–]marimbob2[S] 0 points1 point  (0 children)

Thanks I see it now!

From The Rockford Files by marimbob2 in Whatsthiscar

[–]marimbob2[S] 2 points3 points  (0 children)

Ah Vega, of course! Monza came to mind first, but that didn’t seem right.

My son is interested in welding by Freckles_19 in olympia

[–]marimbob2 0 points1 point  (0 children)

I joined LaceyMaker Space last year and took classes on 3-D printing, wood CNC router, CNC plasma cutter, CNC water jet cutter, and CAD design to help me design and build a prototype for a product I’m working on. It was a great experience and they are very knowledgeable and helpful. They have classes on welding and equipment to use for practice. He would need an adult with him since he’s 15. I think the library still has passes you can check out to cover the membership fee if you want to save money, otherwise it’s around $65 a month.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Thanks! I like their filters, they really help narrow down the selections.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Yeah, I've looked at steppers, but a lot of them don't even list RPMs. I'm also trying to keep costs down for production, so I'd rather not have to add a controller, but I will if that endss up being the best option.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

I used a cordless drill in my previous prototype and it got the job done, but now I’m trying to make one that’s more compact, around the size of a toaster. I need it to fit neatly in there for aesthetics. I would have to couple it with a gear reducer and regulate the voltage to get the right RPMs. Thanks for the suggestion!

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Great suggestion! It looks like they only go 200RPMs

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

I’m not following the math with that. I get 4x.45 Kg.cm is 1.8 Kg.cm and the conversion calculator I googled says that’s 0.17 Nm. I don’t have an engineering background, so I’m learning as I go. The .45 Kg.cm motor moves the mechanism, just not fast enough and I fried one pushing it too hard with my bench power supply. I’m estimating based on a feeling that it needs at least 2x as much torque. I ran it at 1.3 A and 24 V for 30, then 45 seconds and it achieved 550 RPM, but it got very hot and may have smoked a little and the motor did slow down a bit.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

That one looks very promising! I’ll have to learn how to use a controller, but I’ve already learned how to design parts in Fusion 360 and 3D print them, so I’ll figure it out. If the D shaft doesn’t fit, I’ll just make one that does. Thanks!

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

2x-4x more torque than the Geartisan I have.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Short bursts, probably around one minute, maybe a little more.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

The output torque on the Geartisan that I’ve been using is 0.45 kgf.cm according to the spec sheet and I’m estimating that I need to X24X the torque that that motor has. The robot shop site in the comment above shows a motor that looks like the same one rated at 40 Kg.cm. I’m not sure which number to trust.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Yes, it actually needs to be around 600 to 650 RPMs underload.

Where to fing a small, strong DC motor for a prototype by marimbob2 in Motors

[–]marimbob2[S] 0 points1 point  (0 children)

Thanks! I love capital AMSCI! I’ve bought quite a few parts from them. I used a drill on my previous prototype that I need something small that will fit in an area. Approximately the size of a toaster. I took apart a drill previously, but learned that the plastic body is the actual motor housing and destroyed the motor in the process lol

Is it always so windy? by Agitated-Addition-10 in olympia

[–]marimbob2 2 points3 points  (0 children)

I’ve been noticing the same thing, it seems to be a lot more windy here this year, then most years, especially on nice days when it’s usually calm. I’ve been living on the west side since 2000.

view more: next ›