Go/no go testing with drill bits?Eastwood said:How do I measure for the diameter of the hole?
Go/no go testing with drill bits?Eastwood said:How do I measure for the diameter of the hole?
99t4 said:Go/no go testing with drill bits?Eastwood said:How do I measure for the diameter of the hole?
Chalo said:Eastwood said:From looking at the pictures of the hub it seems like it might be drilled oversized. I know most of these hubs with the dual rotor mounts are normally labeled E bike hubs.
They look like fairly ordinary 2.7mm hub holes. If they're less than 3.0mm, use 14-15ga spokes. If bigger, use 13-14ga or 13-15-14ga (like DT Alpine III) spokes.
Eastwood said:What would be the disadvantages to running the 13-14??
Chalo said:Eastwood said:What would be the disadvantages to running the 13-14??
2.0mm spokes have to be tighter to carry the same load as 1.8mm spokes, given the same rim. Since the rim can only take as much tension as it can take, you can load up the same rim with more weight or torque if it has thinner spokes (before you make the spokes go slack and thereby destabilize the wheel).
The difference isn't huge, and either size will likely work just fine. I would have preferred 14-15ga spokes on my e-29er's hub motor wheel, but I needed a length that was hard to get in 14-15 but easy to get locally in 13-14. Like your Halo SAS rims, my Kris Holm rim can tolerate very high spoke tension without damage. So it works out. All the same, I'd have used 14-15ga if it had been equally accessible.
No, sorry should have explained in more detail. Not using a drill at all, no drilling at all. Using the bit as a gauge. Hold the bit itself in your hand and fit it thru the hole.Eastwood said:99t4 said:Go/no go testing with drill bits?Eastwood said:How do I measure for the diameter of the hole?
Are you suggesting drilling the hole larger?
99t4 said:No, sorry should have explained in more detail. Not using a drill at all, no drilling at all. Using the bit as a gauge. Hold the bit itself in your hand and fit it thru the hole.Eastwood said:99t4 said:Go/no go testing with drill bits?Eastwood said:How do I measure for the diameter of the hole?
Are you suggesting drilling the hole larger?
If you have access to an indexed drill bit set, you can fit progressively larger drill bits thru the hole you want to measure. The diameter of the hole is between the size of the last one that fit thru the hole, and the next larger one that didn't.
Example: 7/64" bit fits, 1/8" bit doesn't. Hole is ~3mm.
Obviously, the more bits in the set, the more exact measurement you can obtain.