I know I've asked questions about crankshaft balancing in the past, but now that I've ordered a knew crank for my engine, I plan on actually attempting to make it balanced.
I've looked through this forum, and the information on balancing is quite vague. There are no visual instructions or really instructions at all for how to do it with our china girls. In fact, I'm not entirely sure anyone in this community has actually done it.
Here's a quote I found in a thread about balancing a 2-stroke engine:
http://www.radiocontrolzone.com/archive/index.php/t-182527.html
Also, I keep reading on the internet about weights, counter weighs, etc. Where on these crankshafts would one add weight? Does one simply drill out material in the right places to transfer weight?
I've looked through this forum, and the information on balancing is quite vague. There are no visual instructions or really instructions at all for how to do it with our china girls. In fact, I'm not entirely sure anyone in this community has actually done it.
Here's a quote I found in a thread about balancing a 2-stroke engine:
http://www.radiocontrolzone.com/archive/index.php/t-182527.html
Is there any validity to this? Does this mean that I can't balance my crankshaft for less vibration?A single cylinder engine will never be balanced. Balancing the crank on the engine does nothing for it, because there is nothing to oppose the force from the piston. On any real engine there are multiple pistons whose force is used to counteract the force that any one piston will make on the engine. In a single cylinder engine there is nothing to counteract the force. A counter weight will not work because the force that the piston places on the crank from combustion and compression cycles are never the same. Point being the force on the crank is constantly changing because the speed of the piston is consantly changing as it go's through the engines stroke. In a multi-cylinder engine there are other pistons going through the same phenomenon to counteract. But in a single cylinder engine there is nothing. To have the engine truley be balanced you would need a counter weight that is constantly changing its effectiveness on the crank to match the pistons g-force on the crank. But thats impossible in these engines.
Also, I keep reading on the internet about weights, counter weighs, etc. Where on these crankshafts would one add weight? Does one simply drill out material in the right places to transfer weight?