Novice user of the Silver Bullet - Holes Drilled with Silver Bullet appear not to be canted symmetically

[jatofau1]

As anyone experience this issue. I have drilled three blocks using the Silver Bullet I got about two months ago. I drilled three blocks and noticed that no matter what I did, one of the rear wheels is not canted exactly like the opposite side. One side has a much greater cant. I happened to have a body that John drilled and it appears his drill job as a similar issue. Has anyone experienced this? Note, I am a novice tool user. I used a proxxon mil for the first two blocks and a craftsman 10 inch press for the last block.

Note that the wheels still migrate out on my blocks.

What am I doing wrong? Any advice would be greatly appreciated.

https://www.flickr.com/gp/137595442@N04/s5B6B0

John's body

https://www.flickr.com/gp/137595442@N04/02mr1n

 

[B_Regal Racing]

Looks like the bottom of the block was sanded creating an illusion the drill is incorrect.

 

[jatofau1]

Thanks for the reply.

When I install wheels on the block the left side cants more than the right. That is why I think I am doing something wrong.

 

[Kinser Racing]

Try using some straight axles. The heads of the scout axles and the crimp of the point can throw things off. If its not exact in the height of the block it'll look like that also but wont matter as much as long as they're straight across from each other.

 

[jatofau1]

Thanks Kinser.

The cants look the same with straight axles that I installed earlier. I just grabbed axles for the pics off the work bench which happened to be out of the box axles. I now the holes located at the exact same height and are located directly across from each other. I used a jig to locate the holes. I will just drill one more block to see if I get the same result.

 

[jatofau1]

Re-drilled a fourth block. The cants looked a little closer bit appear slightly off. Did a test roll. The wheel migrate out so I guess it must be an optical illusion. Thanks for all the responses.

 

[GravityX]

It could be an optical illusion like you have suggested. View the block like you already have, axles on bottom, now turn the block 180°, axles on top, and take another look. See if the "fault" follows the bad axle drilling or stays on the same side. For example, if the fault remains on the left no matter how you view the axles, you have an optical illusion. I almost always blame my eyes and trust the equipment with the set up I'm using. Let us know what you see.

 

[Obsessedderbydad]

It took me many many times practicing drilling with the block to get it right. Taking more time to setup the drill press and practicing your drill to get consistant drills is the key. But what was said above is good advice.

 

[~JBD RACING~]

Make sure ur block is super flat on bottom it will cause a alignment issue and height problem everytime. second make sure you have a good drill bit also. I bought 6 new bits and only got 2 good bits out of the 6. There's a lot of variable in drilling a good car..

 

[B_Regal Racing]

I just have to know: how would I know if I had a "bad" drill bit? I'm not sure I have ever seen one other than something I did to it.

 

[Kinser Racing]

I just have to know: how would I know if I had a "bad" drill bit? I'm not sure I have ever seen one other than something I did to it.

To much flex and or runout.

 

[GravityX]

Also be sure you are using a carbide drill bit, they have less of a tendency to "walk". The short ones work best.

 

[jatofau1]

Here is another question. Why does the block come with such a short pin? It seems a pin that is the same length as the block would make it much easier to eliminate possible movement of the block.

I am using the drill bit I bought from John. I will drill another block tonight to see if the drill bit l is flexing.

Thanks for all the responses.

 

[derbychip]

Here is another question. Why does the block come with such a short pin? It seems a pin that is the same length as the block would make it much easier to eliminate possible movement of the block.

I am using the drill bit I bought from John. I will drill another block tonight to see if the drill bit l is flexing.

Thanks for all the responses.

Make sure you have the pin in correct grove

 

[HMH Racing]

Here is another question. Why does the block come with such a short pin? It seems a pin that is the same length as the block would make it much easier to eliminate possible movement of the block.

I am using the drill bit I bought from John. I will drill another block tonight to see if the drill bit l is flexing.

Thanks for all the responses.

If the drill table top has an imperfection in it, a longer bit has more of a chance to affect the drill job.