Ok so this bike has been a DOOZY from day one since I got it in the mail. I put it together after unboxing it & I realized wow the chain is insanely tight. I mean you couldn’t move it at all with your hand and if you did it was pure forcing it and with so much pressure and tension on the chain that it felt like it was gonna snap any second. Just by trying to press the chain down 1 centimeter. While riding it would jump a tooth on my sprocket on occasion because the insane tension on the chain. I emailed support when I got it and asked if it was safe to ride and normal, they said it’s a budget bike it’s normal. But we all know that’s not true… just replaced sprocket for new one and replaced the tight chain and now I can suddenly hear my freewheel click. I’ve never had a freewheel only cassettes so I assumed the loud clicking while coasting was just with cassette but no, it was the chain being so dramatically tight that it was literally caused the freewheel to be almost completely silent when riding.
MAIN PROBLEM REAR WHEEL IS STUCK COMPLETELY. Beyond frozen or overtightened 19mm nuts on the axle bolt.
after replacing chain I need to loosen rear wheel to pull back the wheel and put a bit more tension on the chain for a perfect fit but the BACK BOLTS WONT BUDGE. Is there a special way I’m supposed to be taking off a rear wheel with a freewheel? Or are these bolts really just that tight? could the extremely overtightened chain it came with have caused this? Mind you guys I have 2 bikes the same model and shape but cassettes instead of freewheel. tried all the obvious, WD-40 soaked 24 hours over and over, used all proper tools, tried the two wrenches at one time on each bolt method. Nothing is budging. Anything I can do? Bike in question is mafiabikes kush 1. Also worth mentioning this bike when it came in the mail the rear axle and end of the axle nut and bolt had poked through the side of the cardboard box and was sticking out like a half inch. Could it be damaged from post? Looks fine… Maybe over tightened from an impact driver when assembled at factory? Got new tires and many other mods I’d love to put on this bike if anyone can help me out with any suggestions… pics below. Rode around on it 4 a month with the overly insane tight chain on, slipped a tooth while pedaling a few times. could this cause issues?

by Fast_Hold5211

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2 Comments

  1. Fast_Hold5211 on

    Sorry for the long read, there’s just been a lot of weird things since I got this bike and wanted to give a full explanation of them in case any of that stuff caused the issue. Am I possibly just out of luck? Or is there a special technique?

  2. Psyk0pathik on

    I cant even see threads on that axle im the photo. Anyways, put a box wrench on that nut, not the open end. Then get another wrench and put the box end on the open end of the other wrench (on the nut) now you have a really long wrench. Just crank it off.

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