# Old maslow - possible improvement using pendulum beam **URL:** \ **Category:** Hardware\ **Created:** [May 23, 2024, 3:05pm UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182 "2024-05-23T15:05:38Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![JuJu](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/juju/32/22849_2.png) [@JuJu](https://forums.maslowcnc.com/u/JuJu)\ **Post date:** [May 23, 2024, 3:05pm UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/1 "2024-05-23T15:05:38Z")
Hello I know I am 4 years late but I am working on my frame for the old maslow (M2 in my case). It is waiting since few month now to be set… I wanted to share because I am sure some of you guys still are using the old one. I understood that one of the weakness of this system is the performance/stability on some areas. I had an idea to possibly improve the situation. It is certainly overengineered, and I saw there was already some trials… But there is mine: It is a pendulum like system to apply force depending on the area. Current situation: ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/c/e/ce06970564b6bb2b87cc9bca7656e5273796c71c.png) Improvement: ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/0/0/009084b9453a50940b5f7e8aed4e38fe80634bec.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/f/7f35d00f15a0566bbf8773e22fd28caa3ac89a78.png) I tried to make geometry estimation of the resulting force, with basic math. → Projection of the weight force on the perpendicular axis from the beam → Force at the sled = Force at the weight x ( Length of the beam / distance between sled and bottom pivot ) I tried to do a “simulation” in onshape. See below the result in several positions, to have an idea. ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/7/773512b52a78917624be981a6691236bbfdc7b4e.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/1/7/1708c112a7e96ab53efa571e6e4be214b9580d6b.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/b/7/b740f1ce00a472310a10b8af0d838c85be77d449.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/d/b/db4607c996a118c55394a9a1e7b3aa4bb1ffa857.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/4/1/41cda52a64d910fd8639bde7b66b7078644b0b47.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/8/1/8173e5bf4dac6f1248ae5621e5d7c4c4e829a375.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/3/738277bd3e503b26b2abd0bc2d3143c41ad2534a.png) In case it is feasible, I see 2 benefits: - On the sides: the force will help to tension the long chain and stabilize the sled. - On the center: the weight is reduced and so reduce the force on the motors. And playing with the simulation, I see no sled position where the effect could be negative (Maybe bottom center, to be tested). The beam weight should be lighter than the sled weight anyway I think. ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/3/8/38741dd4a95296ad52a117fa01732524050cb9d8.png) I will see if I have time to test it. But please tell me if I waste my time. Thanks 🙂 Julien ---
**Author:** ![JuJu](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/juju/32/22849_2.png) [@JuJu](https://forums.maslowcnc.com/u/JuJu)\ **Post date:** [May 23, 2024, 3:17pm UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/2 "2024-05-23T15:17:35Z")
If the frame is sufficiently high, moving the bottom pivot more down can reduce the big lateral force at the bottom center region: ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/7/2/727b0bcf54960f0558a6fb0ebfb4fd67382be436.png) ![image](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/3/b/3b747044a4bcd2e62723620658de82e275251a31.png) ---
**Author:** ![dlang](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/dlang/32/859_2.png) [@dlang](https://forums.maslowcnc.com/u/dlang)\ **Post date:** [May 23, 2024, 7:30pm UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/3 "2024-05-23T19:30:22Z")
interesting idea, it doesn’t help a lot in the bottom corners unless you can move the pivot lower, but as you say, it doesn’t hurt anywhere. let us know how it works. ---
**Author:** ![jwolter](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/jwolter/32/30787_2.png) [@jwolter](https://forums.maslowcnc.com/u/jwolter)\ **Post date:** [May 23, 2024, 10:30pm UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/4 "2024-05-23T22:30:08Z")
I like that you are bringing new ideas to the original Maslow. Those lower corners were a constant source of dismay. Even though I don’t have an original Maslow anymore, I’ll be interested to see how it works out. ---
**Author:** ![jjseabra](https://avatars.discourse-cdn.com/v4/letter/j/9e8a1a/32.png) [@jjseabra](https://forums.maslowcnc.com/u/jjseabra)\ **Post date:** [May 24, 2024, 8:49am UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/5 "2024-05-24T08:49:24Z")
Following this, curious to see how the real world operation / test pans out. ---
**Author:** ![TimS](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/tims/32/17329_2.png) [@TimS](https://forums.maslowcnc.com/u/TimS)\ **Post date:** [May 25, 2024, 2:27am UTC](https://forums.maslowcnc.com/t/old-maslow-possible-improvement-using-pendulum-beam/21182/6 "2024-05-25T02:27:59Z")
Genius! I am surprised this was never though of before. Im still using the classic maslow. I think I might make a mod like this when I reassemble after the move.