Hello everybody, i am new here And i have one question for you guys. When i sit on my bike chain looses a lot. If i adjust chain with rider on bike, chain gets very tight when rider gets of. And if i adjust chain without rider on bike, when i get on bike chain looses a lot. I dont think its normal. Maybe you have any ideas where could the problem be?
P.S. Sorry for mistakes i did. My english isnt very good I hope you understood what i want to say.
And i have one question for you guys. When i sit on my bike chain looses a lot. If i adjust chain with rider on bike, chain gets very tight when rider gets of. And if i adjust chain without rider on bike, when i get on bike chain looses a lot. I dont think its normal. Maybe you have any ideas where could the problem be? 
I hope you understood what i want to say.
