Lower headset 1.5 -> 1.8" conversion

[JAMAN]

Did a mistake and bought a fork with 1.8" steerer tube. Trek Rail takes 1.5" steerer tube inside. I couldn´t find conversion cups in market so I designed and builded conversion cup myself. This lifts front 13mm but hey, it works! Here are the results:

 

[bart594]

Nice!
Can you share stl/step file? I bought fork with 1.8" steerer tube too
I was not aware that we have one more "standard"....

 

[Opteron13]

Yep, Jama. ,

Could you help us with some files please

 

[JAMAN]

PM me and I’ll send you the cat file

 

[Sirax]

Hello @JAMAN
I do not have 10 posts yet to PM. Can you please PM me the files as well? I would very much appreciate it! Thanks

 

[Bernardo Brazil]

Same here @JAMAN @Sirax
Congrats on the idea @JAMAN ! nice solution!
Please share the files with me too.
I will have to make one for myself here in Brazil.
Thank you very much!

 

[Opteron13]

thank you very much

 

[Munch90]

i have gone and done the same thing and this seems like my only soloution right now any chance i could get the CAD file also i would rerally appreciate it

 

[Michelna]

Did the same mistake, bought a 1.8 for a trek.
@JAMAN how is your converter performing, any extra stresses on the headtube weld?
Would it be possible to share the cad?

 

[JAMAN]

Sure, I'll send the CAD in private message.

I used blue locktight when I assembled the conversion cup. It sticked well to the original cup. Mainly I go for rocky, technical downhill enduro tracks, so I think I've had tested this conversion cup pretty well. So far everything is perfect, no problems with the frame. And this 1.8" steerer tube gives extra stability!

 

[Bongo]

Hi I really need something like this does anybody know if you can purchase such thing please

 

[hayden]

H

Did a mistake and bought a fork with 1.8" steerer tube. Trek Rail takes 1.5" steerer tube inside. I couldn´t find conversion cups in market so I designed and builded conversion cup myself. This lifts front 13mm but hey, it works!

Would I be able to get the files as I have done the same thing and does this work on Marin frames

 

[DylanJM]

I thought Rails (pre gen 5 at least) came with the oversize 1.8 headtubes? Why would you need an adapter?