Chain coming off chain ring on rough ground

[ColinJ]

I found an even cheaper solution to that problem... I used an old front mech from my junk box on my 1x6 knockabout bike. I set it to the right position by hand and screwed in the endstops to keep it there. No more dropped chains!

 

[ade towell]

I got this one had to do a bit of fiddling but so far so good

https://www.ebay.co.uk/itm/226474272361