DX steerer tube length


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schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#1
Hi,
So a while ago I bought a 41 DX frame, fenders and springer off an eBay seller, believing it was all compatible.
Turns out the frame headtube is a fraction under 5 1/2". Whereas the springer steerer tube is 6 3/8".
What to do? What should the steerer length be? I'm guessing it's at least 1/2" too short?
Any suggestions and advice would be brilliant.
 

buickmike

Wore out three sets of tires already!
May 26, 2014
836
615
Indianapolis, United States
#3
I would say to assemble with lower bearing and throw a picture on your thread. This probably isn't as uncommon as u think. Sometimes when the frame has the upper cup integral with race u can switch to old style and soak up some length.

uploadfromtaptalk1514073557940.jpg


uploadfromtaptalk1514073574251.jpg
 

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#4
Interesting. Thank you. I'm away from the bike now until new year. I'll resurrect this thread when I can get some pictures.
It does seem the steerer is a long way short though.
Would extending the tube upset the rake/angle of the spring etc?
 

Autocycleplane

I live for the CABE
Jan 6, 2010
1,524
3,645
San Francisco Bay, CA, United States
#5
Yeah, at some point in 41 some of these longer headtube bikes were made. I’ve had my hands on a maroon DX like yours, and I believe Wes P. has a sweet 41 canti with the longer tube as well.

You need the right fork.
 

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#6
Yeah, at some point in 41 some of these longer headtube bikes were made. I’ve had my hands on a maroon DX like yours, and I believe Wes P. has a sweet 41 canti with the longer tube as well.

You need the right fork.
Thanks - the whole fork assembly or would a correct steerer suffice?
 

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#7
So, just to clarify: the picture shows what I received (the front fender is backwards I know!), before I start hunting for another prewar DX frame to accept the springer, I just wanted to make sure there's nothing I can do to remedy this situation.
IMG-20170623-WA0011.jpg
 

buickmike

Wore out three sets of tires already!
May 26, 2014
836
615
Indianapolis, United States
#8
I would have bought that frameset also. Expecting it to fit as well. Any original paint on it? I picked up my other Springer and will show pics later. Wish I knew all there is on Springer comparability. Autocycleplane and @REC probably have built more bikes than I have so I'll wait and learn something too. I'm almost sure the second Caber I mentioned is a DX xpert.
 
Likes: schwinnduke

Autocycleplane

I live for the CABE
Jan 6, 2010
1,524
3,645
San Francisco Bay, CA, United States
#9
Perhaps someone stole just the original steerer tube for its locking option, and put the wrong one on there to move the carcass along for the next hobbyist. That would make your life a bunch easier, as any postwar or prewar ladies steerer tube could be modified to work. All this based on the assumption those housepainted parts have been together at some point
 
Likes: schwinnduke

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#10
That would make your life a bunch easier, as any postwar or prewar ladies steerer tube could be modified to work. All this based on the assumption those housepainted parts have been together at some point
Thanks - so if I was to find a steerer (7?") what modifications would be required?
Really appreciate your help with this. No way to know 100% but it arrived all looking as though it belonged together!
Thanks
Martin
 

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#11
Perhaps someone stole just the original steerer tube for its locking option, and put the wrong one on there to move the carcass along for the next hobbyist.
That seems highly likely... look at this picture, zero paint of sorts on the steerer. So could I modify my current steerer or find a suitable one? Would that throw out the springer geometry?
IMG-20170623-WA0018.jpg
 

schwinnduke

Look Ma, No Hands!
Jan 20, 2015
59
6
London, United Kingdom
#12
Apologies to keep banging on this thread, but I just want to make sure I'm doing the right thing before the point of no return:
I believe Autocycleplane has correctly deduced the fact that my whole frame set is correct, but at some point in the past the steerer has been swapped out.
So, with a 5 1/2" headtube what length steerer would be correct. I know a competent welder who can extend my current 6 3/8" steerer, but to what length would be right?
Thanks
Martin
 

buickmike

Wore out three sets of tires already!
May 26, 2014
836
615
Indianapolis, United States
#15
I took pics like I said I would But I just had theories. Fork on-the- left has steering tube just over 7" U compared it next to my frames and while being quite longer it looks like you could move your adjustment cone to postwar and it would be taller than prewar

uploadfromtaptalk1514500234274.jpg
 
Likes: schwinnduke

buickmike

Wore out three sets of tires already!
May 26, 2014
836
615
Indianapolis, United States
#16
Lots of variables. If you intend to lenthen your steering tube.One should expect the angle of spring to change as you say. With no parts readily available I would say buy the complete Springer with the longer tube.Or just get another fork.Klunker style
 
Likes: schwinnduke

GTs58

Riding a '38 Autocycle Deluxe
Sep 2, 2012
7,877
5,266
Central Arizona
#17
Looking at the picture with your fork next to the frame it appears the steer tube is plenty long enough. Have you tried to assemble the fork on the frame yet? I have a 1953 Phantom with locking fork, the head tube is 5 1/2" and measuring the steer tube without removing it I come up with a steer tube of 6 11/16". This is measuring to where the fork cup flange would be seated in the head tube.
 
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