# Firmware 0.85.1 Belt Tension **URL:** \ **Category:** Uncategorized\ **Created:** [November 18, 2024, 6:51pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756 "2024-11-18T18:51:21Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [November 18, 2024, 6:51pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/1 "2024-11-18T18:51:21Z")
I’ve been doing some testing with 0.85.1 and it seems to me like maybe the belt tensions are actually too high now. Has anyone else run into that? ---
**Author:** ![ian\_ab](https://avatars.discourse-cdn.com/v4/letter/i/a587f6/32.png) [@ian\_ab](https://forums.maslowcnc.com/u/ian_ab)\ **Post date:** [November 18, 2024, 7:04pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/2 "2024-11-18T19:04:06Z")
Over tension seems to be associated with Z movements, maybe need to re-visit how M4 compensates for Z ---
**Author:** ![kyleschoen](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/kyleschoen/32/26163_2.png) [@kyleschoen](https://forums.maslowcnc.com/u/kyleschoen)\ **Post date:** [November 18, 2024, 7:12pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/3 "2024-11-18T19:12:36Z")
They seem pretty tight on mine, but also sorting out some mechanical issues. Sled lift on the left side of the workspace is much worse and I personally think it’s from tension or calibration, I don’t really buy the “wax the sled” thing. But I need to fix this mechanical issue then see how it runs. ---
**Author:** ![mitchdes](https://avatars.discourse-cdn.com/v4/letter/m/6f9a4e/32.png) [@mitchdes](https://forums.maslowcnc.com/u/mitchdes)\ **Post date:** [November 18, 2024, 9:13pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/4 "2024-11-18T21:13:47Z")
Noticed belt tensions seem high after upgrading. When tensioning the belts there is now an audible creak coming from the frame. I am also getting over current alarms on one motor. ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [November 18, 2024, 9:46pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/5 "2024-11-18T21:46:28Z")
I’m going to try lowering the tension threshold during calibration and re-run the calibration to see if that lowers the belt tension overall ---
**Author:** ![Betalombo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/betalombo/32/26664_2.png) [@Betalombo](https://forums.maslowcnc.com/u/Betalombo)\ **Post date:** [November 19, 2024, 12:20am UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/6 "2024-11-19T00:20:46Z")
In my case, the tension was so much that it tore the upper straps from the base. ![correas](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/d/c/dcbe05ed0d72e531758b7d245a0c323e6c108210.jpeg) Today I calibrated with tension at 1300 and retraction at 1100 and it worked well, although I have not tested that much, just two cuts. ---
**Author:** ![mitchdes](https://avatars.discourse-cdn.com/v4/letter/m/6f9a4e/32.png) [@mitchdes](https://forums.maslowcnc.com/u/mitchdes)\ **Post date:** [November 19, 2024, 7:52am UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/7 "2024-11-19T07:52:47Z")
New to this - so where do you go to alter the tension? ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [November 19, 2024, 7:25pm UTC](https://forums.maslowcnc.com/t/firmware-0-85-1-belt-tension/22756/8 "2024-11-19T19:25:19Z")
It’s slightly hidden because it’s not something that most folks need to interact with regularly. It’s in the config settings here: ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/2/720bd24dce9f36c7892fd20efd19f3a52139a17a.png) This is the specific setting that you want. ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/b/0/b0467d6bc1f63e4cb0c771ba63d07b16097f171d.png) I dropped it down to 1000 and it absolutely works to reduce the tension in the belts when cutting. 1000 seems a bit too low so I’m going to bump it back up to 1200 and see how that feels.