Paradise Robotics Forum

Robotic Lawnmowers => Lawnbott => Topic started by: LAGbot on May 08, 2018, 08:30:26 PM

Title: Blade screws stripped
Post by: LAGbot on May 08, 2018, 08:30:26 PM

FYI, this may help someone.  I discovered the blade screws are M4 x 0.7mm.  One of my screws had stripped out the threads in the aluminum hub, so I removed the blade motor from the chassis, then drilled out the holes and re-tapped them using an M5x0.8mm tap.  I bought stainless steel M5x0.8mm x 12mm socket head screws and M5 washers at Lowes for about $4 total.  They’re driven by a 4mm hex Allen wrench.  I also had to drill out the blade’s holes to 7/32” to fit the slightly larger screws.

From now on, I’m only tightening the screws with a hand driver (and thread locker) instead of a ratchet wrench to reduce the chance of stripping the threads again.

Title: Re: Blade screws stripped
Post by: RobotLady on September 22, 2018, 08:32:33 AM

Hi, thanks for posting this info.

I agree with your conclusion. Avoid ratchets and use hand tools only! Most screws are delicate on these machines.