# Lift and extension effort less than/exceeding effort threshold **URL:** \ **Category:** Ask\ **Created:** [July 14, 2021, 7:44pm UTC](https://forum.hello-robot.com/t/lift-and-extension-effort-less-than-exceeding-effort-threshold/251 "2021-07-14T19:44:35Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![kpputhuveetil](https://avatars.discourse-cdn.com/v4/letter/k/aca169/32.png) [@kpputhuveetil](https://forum.hello-robot.com/u/kpputhuveetil)\ **Post date:** [July 14, 2021, 7:44pm UTC](https://forum.hello-robot.com/t/lift-and-extension-effort-less-than-exceeding-effort-threshold/251/1 "2021-07-14T19:44:36Z")
Hello! I’ve been getting the following messages about joint effort while running Stretch’s lift: > [INFO] [1626281222.993288]: Lift single effort less than single\_effort\_threshold: 18.9405727386 \<= 20.0 > [INFO] [1626281222.994605]: Lift average effort less than av\_effort\_threshold: 19.1662563618 \<= 20.0 or when extending/retracting its arm: > [INFO] [1626282202.789429]: Extension single effort exceeded single\_effort\_threshold: 46.255050659 2 \>= 40.0 > [INFO] [1626282202.794737]: Extension average effort exceeded av\_effort\_threshold: 49.3674260388 \>= 40.0 I am getting this output during autonomous movement of the lift or arm, even when nothing is making contact with either component. There isn’t anything that is obviously wrong with either joint - the robot seems to operate as it did before these messages - but I didn’t want to ignore it in case it indicates a hardware issue I’m just not noticing. Is this a potential cause for concern? Thank you for your help! ---
**Author:** ![bshah](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.hello-robot.com/bshah/32/55_2.png) [@bshah](https://forum.hello-robot.com/u/bshah)\ **Post date:** [July 14, 2021, 9:13pm UTC](https://forum.hello-robot.com/t/lift-and-extension-effort-less-than-exceeding-effort-threshold/251/2 "2021-07-14T21:13:40Z")
Hi @kpputhuveetil, you can safely ignore these logs. These effort thresholds are used by FUNMAP to detect contacts in [this piece of code](https://github.com/hello-robot/stretch_ros/blob/master/stretch_funmap/nodes/funmap#L235-L277). You may want to increase these thresholds if you’re seeing false positives for detected contacts in autonomous motions like the drawer opening demo.