Std 1" Threaded headset query - Headtube Internal Diameter

[BrianP]

Okay, maybe someone knows this off the top of their head

For a regular 1" BMX headset, what is the inside diameter of the head tube where the cups push in, or alternatively what is the outside diameter of the part of the bearing cup which pushes into the head tube?

Thanks,

Brian 

[harris]

brian is this for a dragon fly frame as the 1" std headset wont fit

[Rodgy1970]

might be of use to you

http://sheldonbrown.com/headsets.html

[BrianP]

brian is this for a dragon fly frame as the 1" std headset wont fit

Not this time Dan, this is for another project, but you have made me curious now about my dragonflys 
Must have a look at the weekend.

might be of use to you

http://sheldonbrown.com/headsets.html

And thanks for the link Rodgy, that's a good bit of reading. Have bookmarked the link

Brian 

[Gary72]

Think there's something on the Chris King website. I have a couple of 1 inch Odyssey Pro headset's that have to have a shim to fit NORMAL bmx bikes. Some mini's run a smaller diameter headtube like older roadbike's.