prewar schwinn locking head parts

[robert bell]

what does the springer fork lock engauge on prewar schwinn springers? bottom head cup is short like non locking cup on my 41. was there a sleeve that went in headtube?

 

[Freqman1]

No sleeve. Prewar locking forks work with regular cups. V/r Shawn

 

[robert bell]

when didthey start using the lower cup with long sleeve that has hole(s) for lock pin like cup on left? cup out of 41 frame is one on right, is that correct?

 

[Freqman1]

when didthey start using the lower cup with long sleeve that has hole(s) for lock pin like cup on left? cup out of 41 frame is one on right, is that correct?View attachment 666656

That started with the post war bikes--1946. The regular cup is correct for '41 regardless of fork. V/r Shawn

 

[robert bell]

sooooo much to learn! thanks again for the great information!! makes things alot easier to do!!

 

[robert bell]

what does the lock pin engauge to lock the fork?

 

[Freqman1]

I want to say it goes into the hole where the down tube is. I just put mine back together last week but didn't even pay attention to this! V/r Shawn

 

[WES PINCHOT]

LOCKS ENGAGED A HOLE IN THE DOWN TUBE OF THE FRAME.
THE PREWAR HEAD TUBES HAVE A HOLE TOWARD THE DOWN TUBE OF THE FRAME
THAT THE LOCKING BOLTS ENGAGE. THE POST WAR HEAD TUBES HAVE AN OPENING
THE SIZE OF THE DOWN TUBE THAT IS TOO LARGE TO RESTRAIN THE BOLT. THAT IS
WHY THE POST WAR FRAMES NEED THE LOCKING BEARING CUP. IT IS HELD IN PLACE
BY A BUTTON ON THE INSIDE OF THE HEAD TUBE TOWARD THE HEAD BADGE.
IF YOU NEED A KEY FOR YOUR CYCLE LOCK I CAN HELP.

 

[rustjunkie]

Prewar headtubes are a tube so the locking pin fits into a hole in the tube. Postwar headtubes are a forging (see electroforging) so the pin fits into a hole in the (taller) headset cup.

 

[robert bell]

thanks!! noticed downtube hole nice and round, my problem is trying to lock fork like my harley, tire towards kickstand side, schwinns lock tire to chaingaurd side! now it works!!