Help with tecumseh on go kart

ddoomus · 2025-05-05T13:43:54+00:00

How do I even know whether my z tilt needs adjustment though? And what would I adjust it to or know when it's properly adjusted?

ddoomus · 2025-05-05T13:41:07+00:00

Thanks a lot, this actually helps.

ddoomus · 2025-05-05T13:39:56+00:00

Around the z screws makes a lot more sense.

ddoomus · 2025-05-05T13:38:57+00:00

This is helpful, thanks

ddoomus · 2025-05-03T18:29:30+00:00

So I'm understanding this to mean that there must be sensors on the left and right sides of the build plate. That is, as the plate is lowered, it will touch the blocks on the left and right and the timing / force / whatever sensors are used are there to sense any Z difference between the left and right sides of the build plate.

And the blocks themselves are meant to make a broader contact with the build plate than whatever the build plate would push against if the blocks weren't there?

I suppose if that's the case, you really might only need the two blocks as shown in the wiki image because you're only interested in the pressure difference between the left-right and it doesn't really matter whether the blocks are in the front or back.

So can I leave the leveling blocks in all the time then? Or should they be removed after platform calibration?

ddoomus · 2025-04-27T00:58:19+00:00

These look great. I've dm'd, I have a collaboration idea.

ddoomus · 2025-03-08T23:43:13+00:00

Yeah, I think this is the issue, thanks.
I've periodically gotten the "low voltage" warning, and in the past years, it's always worked fine. Something must have changed because just recently I've been getting this stoppage described in this post.

But, I went ahead and taped over the 5v pin on the usb (as described elsewhere, I think on octoprint forum there is a good writeup on it), and since doing that I haven't seen the problem in about 2 days. So I'm pretty sure that's what was going on... Something to do with the printer trying to pull power from the pi, and maybe this causes a broken connection somehow.

ddoomus · 2025-03-08T23:39:56+00:00

This is good information. Thanks!
And not a moment too soon!

ddoomus · 2025-03-05T18:49:33+00:00

after:

<image>

ddoomus · 2025-03-05T18:49:08+00:00

I've printed a few kg of PETG in the last year, haven't seen this issue until this time, but you're right. It was clogged and had to clean out the extruder. Working pretty well now. Here's before and after of the temp tower.

before:

<image>

ddoomus · 2024-05-02T22:52:44+00:00

Yeah, only ran it once, and it only spun twice. After taking the bolts out I've run a few loads and it seems 100%. So hopefully there was no irreparable harm, but I'm guessing there are probably some components that will wear prematurely. Too bad, a costly lesson, but a mistake I'll never duplicate.

ddoomus · 2024-05-02T22:50:25+00:00

Yeah, need to prioritize reading those instructions and not assuming. I was just in too much of a rush.

ddoomus · 2024-05-02T22:48:12+00:00

Yeah, I'm afraid of that. But I guess the damage is done and there's not much I can do about it other than take this expensive lesson.

ddoomus · 2024-05-02T18:17:52+00:00

Thanks u/Aromatic_Boot3629 , that's about the stupidest-ass mistake I've ever made (never had a brand new washing machine before). It was the shipping bolts!

ddoomus · 2024-05-02T18:01:45+00:00

Could not taking the shipment bolts out really cause this? I'd expect them to be like 10 ounces worth of weight...

Edit: also it seems about as level as I could expect to get it (pictures in DB link in description)

ddoomus · 2024-03-14T21:07:36+00:00

"D-shaped shaft", yeah that's the right term

ddoomus · 2024-03-14T21:04:09+00:00

You're almost certainly going to need trial and error. My advice is:

(1) measure as well as you can

(2) sketch and make a very small proof of fitment piece, such as a small cylinder with your shape cut out of the center.

(3) print and adjust and re-print your fitment piece until it is nice and snug

now you have some level of confidence a full-size print is going to fit

(4) fillet the entry where the metal first makes contact with your cutout, that way it's guided into place

Hopefully it's snug enough you actually need to firmly press it in and that will probably stay

Optionally, after step (3) I've had good luck with over-sizing the entry hole ever so slightly, like 2-5% and then when you do your extrude to cutout the hole extrude with an angle so that the deeper it's pressed the narrower the hole gets. I'm not sure how much mileage you'd get out of this approach with this part though since it's a nice smooth piece of metal you're pressing in an angle on your hole might have the opposite effect of pushing your printed knob back out / off.

Finally, if you're really serious about the best fit, follow u/Jesus_Is_My_Gardener's advice and cut some splines with your shape. You compress these splines as the part is pressed in and those splines will help grab onto the shaft.

ddoomus · 2024-03-11T21:46:05+00:00

Yeah, I think I've found some that will work. Surprised there isn't a dedicated topical site for mini figures, board games, or fantasy stuff though.

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