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-   -   Stem suggestions for short steerer? (https://forums.thepaceline.net/showthread.php?t=305800)

Novasfyre 04-08-2024 08:09 PM

Stem suggestions for short steerer?
 
I bought a Ti fork hoping and wishing but forgot to factor in the cup, which brings my total spacers to 5mm. With that insufficient, does anyone know of a positive angle tall stem that would add ~40mm of stack?

Mark McM 04-08-2024 08:16 PM

Quote:

Originally Posted by Novasfyre (Post 3371051)
I bought a Ti fork hoping and wishing but forgot to factor in the cup, which brings my total spacers to 5mm. With that insufficient, does anyone know of a positive angle tall stem that would add ~40mm of stack?

Compared to a standard -6 degree stem, a -17 degree stem flipped upside down to be +17 degree will add about 37mm of stack (for a 100mm length stem).

Beyond that, there are "pista" stems that are -20 or -25 degrees, that will be even taller if flipped upside down.

eddief 04-08-2024 08:35 PM

Specialized Comp Set stems come in all kinds of original angles
 
and include 3 shims that let you adjust the original angle up +4, 0, and -4.

https://www.specialized.com/us/en/co...=228546-156570

Novasfyre 04-08-2024 08:58 PM

I suppose none of the options would allow me to keep my redshift...

Novasfyre 04-08-2024 08:59 PM

Quote:

Originally Posted by Mark McM (Post 3371056)
Compared to a standard -6 degree stem, a -17 degree stem flipped upside down to be +17 degree will add about 37mm of stack (for a 100mm length stem).

Beyond that, there are "pista" stems that are -20 or -25 degrees, that will be even taller if flipped upside down.

The problem being that increasing the angle yet further also shortens the reach.

donevwil 04-08-2024 09:05 PM

Maybe not 40mm, but you get the idea. Maybe a custom stem from AR Cycles?

https://www.sim.works/cdn/shop/produ...g?v=1586820896

mhespenheide 04-08-2024 09:09 PM

Quote:

Originally Posted by Mark McM (Post 3371056)
Compared to a standard -6 degree stem, a -17 degree stem flipped upside down to be +17 degree will add about 37mm of stack (for a 100mm length stem).

Beyond that, there are "pista" stems that are -20 or -25 degrees, that will be even taller if flipped upside down.

This is a cinelli "pista" stem that's flipped to a rise:
https://forums.thepaceline.net/attac...1&d=1625182289

commonguy001 04-08-2024 09:13 PM

… nvmind

Novasfyre 04-08-2024 09:26 PM

Quote:

Originally Posted by commonguy001 (Post 3371080)
Maybe not what you’re looking for but redshift makes a new bar that has 50 or 70mm of rise and you can keep your suspension stem. https://redshiftsports.com/products/...ndlebar-system

This is what Epicus mentioned, as well as the cigne stem. Soma also makes the condor bar, but I just... I wish the seller had mentioned the massive cut from the tube. " Details listed below (link to the website)".

weisan 04-08-2024 09:34 PM

Quote:

Originally Posted by Novasfyre (Post 3371074)
I suppose none of the options would allow me to keep my redshift...

If it's a fork with metal steerer (which in your case, I think it is), you could use a threadless stem quill adaptor to raise the height and still be able to use your redshift stem.

I have done this on my Rivendell road bike, ridden it in all kinds of conditions and survived to tell the tale. But it's up to the individual to decide if it's aesthetically acceptable, safe enough or within their comfort zone.


https://www.modernbike.com/product-2...41dc18d00a7057

https://static.modernbike.com/Produc...0226051108.jpg

Novasfyre 04-08-2024 09:40 PM

I'm thinking an EasyTi extender may be the best option of those available, or just riding a slammed bike with ~35MM less stack than I am used to.

eddief 04-08-2024 10:14 PM

Hambini has the answer
 
https://www.google.com/search?q=thre...cUW5toZw8,st:0

Maybe like this:

https://www.velobike.co.nz/products/...-tube-extender

Mark McM 04-08-2024 10:40 PM

Quote:

Originally Posted by Novasfyre (Post 3371075)
The problem being that increasing the angle yet further also shortens the reach.

Actually, it doesn't. It's true that angling a stem up shortens the reach. But so does adding spacers under the stem. Angling a 100mm 17 degree stem upward will increase its height by 56mm, and shorten reach by 17mm. Likewise, if you were to keep that 17mm stem angled downward and add 59mm of spacers under it, it would increase its height vertically by 56mm - but because of the angle of the steerer, moving the stem up this much would also shorten reach by the same 17mm.

You say that you would would add ~40mm of spacers under your stem if you could. But that would shorten reach by 12mm. There's no free lunch here - raising stem, either by changing the angle or putting spacers under it, always shortens reach. Likewise if you added a steerer extender, you could raise the stem - but again, because of the angle of the steerer, reach will get shorter (by about 0.3 x the height raised).

Mark McM 04-08-2024 10:48 PM

Quote:

Originally Posted by weisan (Post 3371088)
If it's a fork with metal steerer (which in your case, I think it is), you could use a threadless stem quill adaptor to raise the height and still be able to use your redshift stem.

I have done this on my Rivendell road bike, ridden it in all kinds of conditions and survived to tell the tale. But it's up to the individual to decide if it's aesthetically acceptable, safe enough or within their comfort zone.


https://www.modernbike.com/product-2...41dc18d00a7057

https://static.modernbike.com/Produc...0226051108.jpg

The steerer extenders above are intended to be used with threaded steerers. Threadless steerers tend to have thinner walls than threaded steerers, so the quill of these extenders will probably be too loose in a threadless steerer, and the thin walled steerer may not be strong enough for the pressure from the expander wedge.

Threadless steerers should be used with this type of steerer extender:

https://static.modernbike.com/256/ma...1213105520.jpg

weisan 04-09-2024 05:58 AM

I stand corrected, thanks Mark pal.


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