Post by trappist on Jan 23, 2013 15:27:35 GMT -6
My son and I have been using the Rail Rider Tool from Derby Worx for 4 years now and I've never been that comfortable with the way I'm using it. I've read stuff here about how and watched the videos put out by Derby Worx.
I keep feeling like I'm bending the axle more than the 1.5 or 2.5 degrees the tool states. I see marks on the axles afterwards and sometimes a wobble develops in the wheel that wasn't there before we bent them. The bend just seems to be more than it should be, but I have no method of measuring it.
I've made sure we aren't over polishing the axles, having made that mistake before. We are choosing good wheel molds and prepping them as much as our rules allow (no shaving). Mostly just polishing the inside wheel bore and burnishing graphite onto the cone, etc.
Sometimes when adjusting so that the wheels move to the outside of the axle head, I can only get them to do that when rolling forward, but not backward. Spent hours trying to get it both ways, but forward was all I could get, so I went with it.
Is it possible with the way I'm striking the press with my hammer? I'm holding the axle against the RR tool with my finger while pinching the other side of the tool. Should I be striking dead center of the tool? Of course measuring just how much force to use is pretty subjective. The difference between a light, medium and hard strike for one guy is different for another.
My main concerns are:
Another thing is I inadvertently made it so we have a COM about 1/2in in front of the rear axle. Think I'll have a problem? We can't have an extended wheelbase, but we can move it to wherever we want, so long as the original distance between front and back are maintained.
I keep feeling like I'm bending the axle more than the 1.5 or 2.5 degrees the tool states. I see marks on the axles afterwards and sometimes a wobble develops in the wheel that wasn't there before we bent them. The bend just seems to be more than it should be, but I have no method of measuring it.
I've made sure we aren't over polishing the axles, having made that mistake before. We are choosing good wheel molds and prepping them as much as our rules allow (no shaving). Mostly just polishing the inside wheel bore and burnishing graphite onto the cone, etc.
Sometimes when adjusting so that the wheels move to the outside of the axle head, I can only get them to do that when rolling forward, but not backward. Spent hours trying to get it both ways, but forward was all I could get, so I went with it.
Is it possible with the way I'm striking the press with my hammer? I'm holding the axle against the RR tool with my finger while pinching the other side of the tool. Should I be striking dead center of the tool? Of course measuring just how much force to use is pretty subjective. The difference between a light, medium and hard strike for one guy is different for another.
My main concerns are:
- Should the bend in the axle after using the RR tool be really that noticeable?
- Should I expect to see some indentations on the axle shaft?(where it bent, not the spot where the wheel rides)
- Should I be that concerned with the wheels not moving out to the axle heads when rolling backwards when they do rolling forwards?
- What causes the wheel chatter to crop up after bending the nails and how do I prevent it?
Another thing is I inadvertently made it so we have a COM about 1/2in in front of the rear axle. Think I'll have a problem? We can't have an extended wheelbase, but we can move it to wherever we want, so long as the original distance between front and back are maintained.