I'm finally getting around to doing this for my tailspring, but am still very much confused about which reamer and bolt to purchase.
Both post #9 and #10 suggest an AN386-2-9A taper pin (from Aircraft spruce). From the ACS website, that part number indicates a 10-32 thread on this pin. Doesn't seem quite right to me to put into what is starting out as a 1/4" hole and will be reamed to be larger. Maybe I'm missing something here but shouldn't this be an AN386-3-9A (presuming the length is correct here) taper pin (1/4-24 thread)?
Then I start looking at the reamers, and again, these don't seem to match up with what the bolts require. The #2 reamer seems possibly too large (i.e., will oversize the hole) for the smaller pin, but will barely even start in a 1/4" hole. And then I've gone looking at a couple other places for a less expensive reamer, and most of the #2 reamers from other vendors (for example MSC) are significantly smaller diameter than the one from ACS.
So, I've been scratching my head (and other parts) periodically trying to figure this out without spending an unnecessary $50+shipping for the wrong reamer/pin combination for this job.
Can anyone clarify this for me?
Thanks,
Greg