Wheel building help. Home › Forum › Bike Forum › Wheel building help. Viewing 7 posts - 1 through 7 (of 7 total) Wheel building help. fhendry1Member I am trying to order spokes for the new wheels I want to build. The DT swiss spoke calc asked for the Ø of spoke hole and I don’t know what measurement to put as the holes aren’t round. hub by fhendry1, on Flickr This is the plan of the hub, can someone help me? Posted 4 years ago davidtaylforthMember 38.4 non drive side 49.3 drive side At a guess Posted 4 years ago mochaMember http://www.wheelpro.co.uk/spokecalc/ use this one, it’s better, honest – more reliable ime Posted 4 years ago KeefMember er, 2.7. it’s on the drawing. Posted 4 years ago johnellisonMember er, 2.7. it’s on the drawing. Sure is… 38.4 non drive side 49.3 drive side At a guess That’s the PCD (pitch circle diameter) of the spoke holes. Posted 4 years ago schmikenSubscriber 2.7 as above! Posted 4 years ago CaptainCrashSubscriber Another vote for 2.7mm 😀 Posted 4 years ago Viewing 7 posts - 1 through 7 (of 7 total) The topic ‘Wheel building help.’ is closed to new replies.