How do you remove an aluminum seatpost from a steel frame?
One of the methods is to heat the aluminum seatpost and then to let it cool. In theory, the aluminum will expand twice as fast as steel and hence the expansion/contraction should crack the bond. Some recommend using a blow torch or even boiling water.
Can I cut my bike seatpost?
Cutting the post down is the proper way to do it really. Seat posts need to have a minimum amount of tube in the frame for safety though, so do some measuring and just cut off as little as you can get away with and file down any rough or sharp edges.
How do you remove aluminum from steel?
While HCL would attack the aluminum violently, it will also effect the steel to some degree. Sodium hydroxide would be the best choice. Definitely use Caustic soda (Sodium Hydroxide) to kill the aluminum.
Does caustic soda dissolve Aluminium?
Alkali is safer for the stainless than acid, and is very widely used to dissolve aluminum. Sure, caustic soda is a “hazardous chemical” to be handled with respect, but let’s not overstate it: For the rest, caustic soda is the only affordable way to do the deed.
How high should my bike seat be?
Place your heel on the pedal and pedal backwards to reach the six o’clock position. Your knee should be completely straight. If your knee is still bent you need to increase the height, adjusting in small increments each time, and if your heel loses contact with the pedal then you need to lower the saddle.
Should bike seat be higher than handlebars?
As a general rule of thumb, you want the top of the handlebar about as high (or higher than) the saddle, unless you’re a sporty rider looking to ride fast. You can change the height of the handlebar by moving the stem up or down the steerer tube.
Why does my bike seat keeps tilting?
Seat Sliding Backward or Forward This is caused by the saddle rails not having a tight enough fit on the seat post clamp. The first thing to do here is to check for dirt and debris. Remove your saddle and take apart your seat post clamp. You’ll want to check both the saddle rails and the seat post clamps.