Late 30's Double Curve Roadster?

[jwages]

I'm pretty sure there is a post or thread on here somewhere showing/explaining the differences but they are different. If your gonna do a rat/custom then use whatever. If you want to do original then start hunting a pre war springer. V/r Shawn

Shawn, I read a few threads here about that topic and learned a lot. What's unclear to me is whether the postwar 5 1/8 head tube length will accommodate a prewar steerer tube originally designed for the shorter 5 inch head tube. Wondering if it'll work with just fewer exposed threads.

 

[Autocycleplane]

Shawn, I read a few threads here about that topic and learned a lot. What's unclear to me is whether the postwar 5 1/8 head tube length will accommodate a prewar steerer tube originally designed for the shorter 5 inch head tube. Wondering if it'll work with just fewer exposed threads.

You're gonna be right on the edge there. Might just work. Park makes a headtube mill, you could find a shop with one that could properly mill down that ring until a prewar fork works. Doubt they would loan it out, expensive tool.

 

[Freqman1]

The thing that worries me about that head tube is not the length but the inside where a cup would go. That thing is jacked up pretty good. The first thing I would do is make sure I can get a set of cups in there and that they are straight when you put a fork in. What I mean is if the cups are not aligned the fork will ride off center and you may have some binding. V/r Shawn

 

[kwoodyh]

Good point! It doesn't concern me because I won't be the crash test dummy riding it on its maiden voyage, make sure you have Go Pro charged and PPE is way over hyped!


Sent from my iPhone using Tapatalk

 

[jwages]

The thing that worries me about that head tube is not the length but the inside where a cup would go. That thing is jacked up pretty good. The first thing I would do is make sure I can get a set of cups in there and that they are straight when you put a fork in. What I mean is if the cups are not aligned the fork will ride off center and you may have some binding. V/r Shawn

It's my concern too. But the deeper you look into the top of the head tube, the better it looks. I have a feeling that giving it a haircut will reveal a more suitable home for the top cup. However, the guys at the bike shop say they've pressed cups into worse (believe it or not) and had no problems.