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Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Tue Dec 03, 2019 8:32 am
by geneb
I look forward to seeing how it works with the new carriage shells installed! Nice catch!

g.

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Sat Dec 14, 2019 11:25 pm
by clytle374
Much better results. I replaced the skates and it really didn't help. I tightened the belts as tight as I could using long needle nosed pliers under the idler support pried against the frame. Again, I've been shooting in the dark on proper belt tension since 4 years ago when I built it. That made a major improvement.
Screenshot_20191214_231454.png
That didn't give good first layers. But provided a delta calibration that was accurate. Simply turning off bed mapping was the answer there since it is just as likely to be wrong as right at any particular point on the bed.

Trying to decide if I build a tool or mod then machine to get good control when adjusting the tension.

Thanks again for all the advice!
Cory

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Sun Dec 15, 2019 10:59 am
by geneb
\o/

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Mon Dec 16, 2019 8:15 am
by Mac The Knife
For belt tensioning, I had considered using a guitar tuner app om my phone, to adjust tension,,,,,, Just never got around to it.

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Mon Dec 16, 2019 8:50 am
by clytle374
Mac The Knife wrote:
Mon Dec 16, 2019 8:15 am
For belt tensioning, I had considered using a guitar tuner app om my phone, to adjust tension,,,,,, Just never got around to it.
I'm planning on using a tuner app. Got an idea drawn up last night to try and grab the spacers on each side of the idler, kinda like a c clamp with a jack bolt on top of the top plate.

Thanks
Cory

PS: anyone have a ballpark frequency of the belts

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Mon Dec 16, 2019 12:23 pm
by Mac The Knife
I would just want all three to be pretty close to the same frequency.

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Tue Dec 17, 2019 6:58 am
by clytle374
Mac The Knife wrote:
Mon Dec 16, 2019 12:23 pm
I would just want all three to be pretty close to the same frequency.
Here is the problem. I've worked on machine tools most of my life. Most people run timing belts way too tight. Seen many people kill servo motors that way. I assume now I've been running them too lose, I have no ballpark to start in.

Cory

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Tue Dec 17, 2019 7:43 am
by geneb
Cory, take a peek at the 4th ed of the v2 build guide - I seem to recall putting something in there about a way to do belt tension that works pretty well. I'm busy with work right now, otherwise I'd give you a page#, sorry!

g.

Re: Max v2 issue with peaks and valleys in bed map[NEW DATA]

Posted: Thu Dec 19, 2019 10:34 pm
by clytle374
geneb wrote:
Tue Dec 17, 2019 7:43 am
Cory, take a peek at the 4th ed of the v2 build guide - I seem to recall putting something in there about a way to do belt tension that works pretty well. I'm busy with work right now, otherwise I'd give you a page#, sorry!

g.
I remember that now. Has a lot to do with how tight you have the belts where when you put the clips in with the method. Sure would like linear rails. All my backlash is the axial play in the bearing of the cheapskates. These bearings have no more, no less, play than the first set... So not hopeful of finding bearings with less play.

Thanks again for all the advice.
Cory