Suggestions for no-extension or very-short extension clamp-on stems

[Patrick Moore]

This list ought to know about this question.

I hope to install Maes Parallels when I rebuild the Medium 2012 Monocog and since the effective tt is 59.5 cm* compared to the 56.5 or 57 where I usually install such a bar I’ll need a stem that is both 25 or 30 mm shorter than the 80s I use on my road bike and that also gets the bar clamp at least level with saddle (don’t know needed height above spacers since I don’t yet have the saddle installed, but this suffices for the general question).

Question: Where can I find threadless stems with 5 cm extensions and a 30 or 35* rise that don’t cost custom prices? a 6 cm ought to work since I will have the bar level with saddle instead of ~3 cm below.

This looks promising at $75 but even that is high for a throwaway beater: https://analogcycles.com/products/gnomehopper-60mm-stem

Second question: Are adjustable stems sturdy enough for long-term use?

Thanks.

*I  could only find the spec for the 2015 Monocog 29er aluminum but this fits with my own admittedly slapdash measurements. If anyone can correct me, please do so.

I will have fun with this build. I think of ultralight 60 mm Big Ones and the long unused S3X with 17 t cog and if I can make it work a cosmetically marred Dura Ace GA 200 crank with 42 t ring for ~ 72, 54, and 45 inch gears or perhaps an 18 for 68, 51, 43. Time will tell.

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Patrick Moore

Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum

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[Collin A]

The venerable origin8 or equivalent look to have you covered at 25 or 40 deg. Not as svelt as the analog ones, but they are cheaper if you are just trying things out:  https://origin8.bike/products/everland-mx-gx-stem?variant=40214991437979

The other bet is probably the used stem bin at your local co-op.

Collin in Oaktown

[Elisabeth Sherwood]

Ritchey has @ $50 stems with 30-degree rises:

https://ritcheylogic.com/bike/stems/comp-4-axis-30d-stem

(Not available, apparently, from Ritchey directly, but someone should have them in the shorter lengths...)

(Note that short-length stems don't actually rise very much, regardless of the angle of the rise!)

Cheers!

Liz

Washington, DC

[lucky...@gmail.com]

You’re asking for a lot but might get close with a used “Cigne” or “LD” type stem, or a VO Happy stem. EBay or FBM.

I have an ugly-ass adjustable rise stem stock on my REI Co-op brand e-bike. The bike is heavy and the ride is stiff. I load it down and it gets beat up. Stem has not moved. YMMV.

Liz in Sacto

On Oct 24, 2024, at 15:02, Elisabeth Sherwood <elisabeth...@gmail.com> wrote:



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[Patrick Moore]

Collin and Liz 1 and Liz 2: Thank you! These are very good possibilities. Besides the Analog Gnomehopper (https://analogcycles.com/products/gnomehopper-60mm-stem), and after I posted the question I thought to look on the Riv site and they have this: https://www.rivbike.com/products/soma-shotwell-stem

So there are quite a few possibilities out there.

And then I learned that these exist: 

So it should be relatively easy and relatively cheap to get a good reach and height for the Maes Parallel despite the low stack and long top tube.

 

On Thu, Oct 24, 2024 at 3:55 PM Collin A <collinm...@gmail.com> wrote:

The venerable origin8 or equivalent look to have you covered at 25 or 40 deg. Not as svelt as the analog ones, but they are cheaper if you are just trying things out:  https://origin8.bike/products/everland-mx-gx-stem?variant=40214991437979

The other bet is probably the used stem bin at your local co-op.

On Thu, Oct 24, 2024 at 4:02 PM Elisabeth Sherwood <elisabeth...@gmail.com> wrote:

Ritchey has @ $50 stems with 30-degree rises:

https://ritcheylogic.com/bike/stems/comp-4-axis-30d-stem

(Not available, apparently, from Ritchey directly, but someone should have them in the shorter lengths...)

(Note that short-length stems don't actually rise very much, regardless of the angle of the rise!)

On Thu, Oct 24, 2024 at 4:32 PM <lucky...@gmail.com> wrote:

You’re asking for a lot but might get close with a used “Cigne” or “LD” type stem, or a VO Happy stem. EBay or FBM.

I have an ugly-ass adjustable rise stem stock on my REI Co-op brand e-bike. The bike is heavy and the ride is stiff. I load it down and it gets beat up. Stem has not moved. YMMV.

 

[Elisabeth Sherwood]

Ooh!  I had not seen the short-reach silver Shotwells before!  Good to know! 

Liz

Washington, DC

[Garth]

When comparing reaches though you must know the seat and head tube angles of each bike in question as that can greatly affect the saddle to bar reach depending on how many degrees difference. Say one bike has a 72d STA and the other 73d. If you were not aware of that and positioned the saddle using the same post @ the same spot on the rails, your reach estimates will be off as one will be further back of the center of the BB, and that would make the effective reach greater than the 73d frame. This is given the same HTA and relative height of the center-heat tube. If those are different also, that's more to calculate. BB heights also drastically change the way you may even want to position yourself in the first place. I know all of this from experience in trying get my custom Franklin road frame and the Bombadil relatively the same in reach and bar height. So far it hasn't worked out as hoped not from miscalculations, but I'm at the limits of what parts are available to get it there(longer and low) and how much I'd have to spend as I can't change the dimensions of the frame !  Still, the way they feel in being propelled and handle is inherently so starkly different even if I could get the reach and height relatively the same, the way I pedal and steer them is going to feel inherently different. They're just so differently designed frames. I'm not saying yours are or are not as I have no clue !

You should have an easier time as your reach issue is from reach being too long and 50-60mm stems with rising angles are plenty. But you must remember that say a 50mm stem with a +35d rise isn't going to rise all that much in usable height. I know you know the link !  http://yojimg.net/bike/web_tools/stem.php

Monocogs according to https://www.vitalmtb.com/product/guide/Bikes,3/Redline/Monocog-29er,4403 had 73d STA and 72d HTA with a TT of 60.3 on a 17" frame. I assume that is the medium as other years of that frame called the 17" a medium. (@ sizes and geometry look for the green "view geometry" link to the right).

[Patrick Moore]

Thanks. The geometry link will be useful. I’m familiar with Jim’s stem tool. The 595 mm figure for the tt is the effective and not the actual length and corresponds to my measurement of the latter

I’ll install the saddle to the usual measurements wrt the bb (saddle nose ~3” behind centerline of bb shell, and I like plenty of leg extension) and adjust tilt and then use the saddle nose as the reference point. Fun fact: with the inevitable original issue Flite in the right place and using the same generic Shimano aero levers I always use, and with bar from ~ 1" above to about 1” below saddle nose there should be about 27” between nose of saddle to tip of hoods. Amen. I mean, these are always my starting measurements.

The bb will come down about 1/2” with the 60 mm Big Ones compared to the 72 mmRangers and I’ll probably put the bar even with saddle which will allow for slightly more stem extension. I set up the Monocog with the very tall Ranger wheels (about 1” taller than the Big Ones) much as I did my Matthews dirt road bike, even with the shallow bb drop on the Monocog; I’m fine with that. 

One perhaps bigger problem will be to restrain my impulse to perfect things. This will be a beater and remain a beater, dammit! But I am looking forward to a new Frankenstein creation.

Aside, back to the “light tubes or tubeless?” thread: Friend gave me back 2 tubes I’d given him and forgotten about, 622X 2-2.25”. The pair rubber-banded together weighs 250 grams, so perhaps these 125 gram tubes will work fine. I’d hate to stunt the truly lovely rolling feel of these ultra-light, ultra-supple 450 gram Big Ones.

>>> Does anyone have any more 125 gram 622 X 2-2.25” tubes to sell me? <<<

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[Garth]

I forgot the adjustable stem question. I recall seeing a vid or website about a teardown of the innards of a Ritchey and a  cheapie. The Ritchey was al metal inside, the teeth that hold the setting. The cheapie was plastic, ouch, not for riding ! The Ritchey is safe for riding, but 90mm is the shortest. Depending on how high you angle it upwards though, it may or may not work.

I think Schwalbe SV19A is the lightweight version for the size you need and weighs 140g, for what that's worth.

[Patrick Moore]

Thanks for warning about plastic. But the wealth of very short stems with rise and the threadless stem raisers ought between them to meet my needs, so I daresay no need for an adjustable stem, thank God.

Schwalbe SV19As: Yes! That’s what I want; thanks.

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[Garth]

A quick check on ebay revealed amongst the many options this seller, which offers discounts for purchasing more tubes, as low as $12.37 for 4 or more. Shipping is included ! 

https://www.ebay.com/itm/323500375662

[Peter Adler]

The pricing on that listing is strange: 4x single tubes is $2.50 less that a single 4-pack of tubes. I wonder if the seller realizes?

Peter Adler

Berkeley, CA