Picking Out Roller Chain

[Raul]

Of course #25 chain will break, and so will #35 if it sees a high enough load. All I am saying is that you should have a good reason to make something stronger. Let's not just make declarations on this forum that one should never use #25 chain!

I have seen many teams start drilling holes all over the place because they are over weight. In the meantime, they have gears that are 1/2 inch thick that weigh a pound a piece and #35 chain driving wheels that have such low traction that there is no way they could ever load the chains or the gears enough to justify such overkill.

If you simply do not have time to do the math and can spare the weight, then fine, over design it. Or, if you have done the math and have determined that #25 will not work for your application, then by all means, use something stronger. But don't ask everyone else to just give up and play it safe - they also need to determine if it is an issue for their application.

You can be extra safe or you can be competative - its your choice.

Raul