Front cylinder dimensions?

Can anyone tell me the diameter and length of the front cylinder? Looked around on here and on google and just can’t seem to locate it? Thanks in advance!

http://www.gbfans.com/equipment/plans/

I’m sorry AJ, I’ve looked over all of these plans quite a few times and still can not find the front cylinder dimensions. Maybe I’m just looking too hard…like one of those hidden object games. You know the things right in front of you and you want to use a hint, but you know you’ll feel like an ass when you do. :stuck_out_tongue:

1.25" diameter, 1 5/8" length

Thank you very much kind sir!