Chinertown
Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: gmh on September 23, 2023, 02:07:49 PM
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I'm trying to find a stem similar to the new Giant SLR Aero stem that has, what is essentially, an open bottom, but for the life of me I can find anything more reasonably priced (they want $300?!). The channel is used to route internal cables while still making the bike easy to adjust. My hope is that I can find a stem with a similar channel so I can install some Formula Speedlock hoses to have a travel bike that still has an integrated front end.
(https://imgur.com/2vglAMB)
Does anyone know of a stem with a similar feature?
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Not exactly like the one you mentioned but similar:
https://www.yishunbike.com/product/st062/ (https://www.yishunbike.com/product/st062/)
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The only stems that I know of that both have an opening and a recess are the Cannondale C1 Conceal stems and the 3T More ICR stem.
I am not sure you can use the Cannondale stem on a round steerer and the 3T one is really expensive. An alternative is to get something like the FSA SMR stem and make a custom cable tray large enough to hold disconnects.
This is something I am still working on, but its not on a bike so I havent tested it yet. Waiting on a new build to try it out. I also may try making a variation of this for the Control Tech Siroco Carbon Drop Stem if I can find one.
Definitely not a print at home kind of part and it would only work with electronic drive trains as no mechanical cable i know of could make that bend and still work well. With a single piece design I could probably lower the stack another 5-7mm
You can see more here: https://imgur.com/a/lTlaQVw
Edit: removed the embedded images as they were huge.
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I hadn't come across the Control Tech stems. From what I can tell (the pictures I'm seeing aren't super thorough), it looks like it might work. I'll probably need to make an adapter to ACR spacers though.
That's an interesting idea with the SMR stem. I didn't realize you would route hoses internally out the center of handlebar with that one. I thought it was only externally through the sides. What are those connectors you're trying to fit?
My other thought was getting the handlebar that Airwolf uses for their YFR068 frameset and putting the Speedlocks in the channels that run under the tops.
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These are Zeno couplers. Unlike the Formula couplers you can put them anywhere along the lines.
I prefer them, but DM me if you want a set of the Formula ones, I have a set I have been meaning to to stick on ebay for a while.
If all you are looking for is a stem that has a routing hole at the bottom, the Pro Superlight might be another option, but I feel like the couplers under that stem wouldnt be very good looking.
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The pro vibe superlight stem doesn't have the same channel as the giant stem, but it does have the option to run two brake hose out right behind the handlebars (green hoses in the picture).
(https://www.pro-bikegear.com/_assets/images/category/road/stems/2022/vibe-superlight-stem-1-1-8/pro-cableroutingstem.png)
so if you really want to hide them afterwards you could make a 3d print to cover it up or even a little carbon plate. it's a small hole though so I think it'll only fit 2 brake hoses nothing more.
https://www.pro-bikegear.com/be-nl/road/stems/vibe-superlight-stem-1-1-8 (https://www.pro-bikegear.com/be-nl/road/stems/vibe-superlight-stem-1-1-8)
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These are Zeno couplers. Unlike the Formula couplers you can put them anywhere along the lines.
I prefer them, but DM me if you want a set of the Formula ones, I have a set I have been meaning to to stick on ebay for a while.
If all you are looking for is a stem that has a routing hole at the bottom, the Pro Superlight might be another option, but I feel like the couplers under that stem wouldnt be very good looking.
Yea the aesthetics are the sticking point for me here. I'm looking for something that will give easy access to the couplers, but still look good and be relatively inexpensive.
I am curious about those Zeno couplers. Is that a particular reason you're going with those instead of the Formulas? Are they small and/or shorter?
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I'm just curious, is your frame fully integrated or is it semi-integrated and you just want to clean up the cables before they exit out from the stem?
I'd just opt for an integrated stem+bar that already have built in cable routing. That would probably cost a lot less than some of these boutique stem options. It seems these stems with hidden cabling weigh as much, if not more than a standard stem.
I personally like exposed cables, it looks more industrial! ;D
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Yea the aesthetics are the sticking point for me here. I'm looking for something that will give easy access to the couplers, but still look good and be relatively inexpensive.
I am curious about those Zeno couplers. Is that a particular reason you're going with those instead of the Formulas? Are they small and/or shorter?
Pros of the Zeno System vs. Formula:
- Assembled they are nearly 10mm shorter 2mm smaller in diameter.
- They can be placed anywhere on the line.
- They do not require special cables.
- You can reinstall them a couple of times in the case you kink a hose or something goes wrong with the install.
Cons:
- The downside is that the male end of the hose is larger and requires a 10mm hole to pass them through.
That "con" is not an issue with the FSA SMR stem and I designed my own headset top caps so I could pull them through to drop the fork.
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I'm just curious, is your frame fully integrated or is it semi-integrated and you just want to clean up the cables before they exit out from the stem?
I'd just opt for an integrated stem+bar that already have built in cable routing. That would probably cost a lot less than some of these boutique stem options. It seems these stems with hidden cabling weigh as much, if not more than a standard stem.
I personally like exposed cables, it looks more industrial! ;D
The frame is fully integrated, but I want access to the hoses for the hydraulic brakes so I can pack the bike down for travel in a Orucase Ninja bike bag (you need to be able to take the fork off). I'm planning to uses hydraulic quick disconnects similar to the ones Sakizashi posted and while I can make an FSA SMR stem work, imo, it's not the most elegant solution.
Pros of the Zeno System vs. Formula:
- Assembled they are nearly 10mm shorter 2mm smaller in diameter.
- They can be placed anywhere on the line.
- They do not require special cables.
- You can reinstall them a couple of times in the case you kink a hose or something goes wrong with the install.
Cons:
- The downside is that the male end of the hose is larger and requires a 10mm hole to pass them through.
That "con" is not an issue with the FSA SMR stem and I designed my own headset top caps so I could pull them through to drop the fork.
Oh dang, you might have just swayed me over to using those. And looking more closely, I really like the volume adjuster they've got!
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I'm looking for something similar to build a travel bike where it's easy to remove the handlebar for packing
Best (only) thing I've come up with so far:
https://www.aliexpress.com/item/1005009161962780.html
This would allow routing cables through the center hole of the handlebars, into the open bottom stem and down the headset and leave plenty of cable for removing the handlebar to place at the side of the frame for packing.
Anyone has a better/neater solution I'd love to know... (other solutions route through the hollow stem, so leaves no slack in the cables when the removing the handlebar)
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Yes I think it is the wisest choice as a head pipe, this could be an alternative https://it.aliexpress.com/item/1005009255569255.html (https://s.click.aliexpress.com/e/_c4toVlyn)
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I'm looking for something similar to build a travel bike where it's easy to remove the handlebar for packing
Best (only) thing I've come up with so far:
https://www.aliexpress.com/item/1005009161962780.html
This would allow routing cables through the center hole of the handlebars, into the open bottom stem and down the headset and leave plenty of cable for removing the handlebar to place at the side of the frame for packing.
Anyone has a better/neater solution I'd love to know... (other solutions route through the hollow stem, so leaves no slack in the cables when the removing the handlebar)
I think this is the best option if the stem sizes work for you - it looks like they only go up to 100mm.
I ended up getting a handlebar similar to an Aspero 5 bar that lets you route the cables along the underside of the tops then it the stem (FSA ACR stem). Sadly, I was not able to make the cables route through the stem without causing the whole setup being difficult to turn, so the brake lines are routed under the stem and into the top of the headset. Since the bar allows for the cables to be routed tight to the underside, that's where I have the couplers. So not completely concealed, but it's been working great so far.
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I ordered a RIRO stem a few days ago, I'll report how it is.
As a new frame still in on it's way as well, it'll take a bit.
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If only someone on Ali Express made one of these in a BBC 140mm length.
I bought a similar one from Giant a couple of years ago for my Propel since it requires the OD2 steerer. It ran me a whopping $300+ USD
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Right, RIRO goes up to 100mm only that's pretty limiting
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I have the Riro. Installed it on my XMCS CS-01 with Zeno V2 couplers. It works really well for the quick disassembly and removal of the fork for travel. Heavy, but makes for a very clean cockpit.
Plan for a whole day/afternoon to get everything just “right” in terms of running Zeno couplers at the right detachment point and bleeding. I’ve done it three times and it never gets easier…
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I have the Riro. Installed it on my XMCS CS-01 with Zeno V2 couplers. It works really well for the quick disassembly and removal of the fork for travel. Heavy, but makes for a very clean cockpit.
Plan for a whole day/afternoon to get everything just “right” in terms of running Zeno couplers at the right detachment point and bleeding. I’ve done it three times and it never gets easier…
You still need to detach the hoses for travel? Not enough slack to just strap the bars to the fork?
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I have the Riro. Installed it on my XMCS CS-01 with Zeno V2 couplers. It works really well for the quick disassembly and removal of the fork for travel. Heavy, but makes for a very clean cockpit.
If you hnow the weight of the Riro stem please let us know, weight and size. Thank you.
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https://aliexpress.com/item/1005010225385827.html
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You still need to detach the hoses for travel? Not enough slack to just strap the bars to the fork?
Yes, my set up is specifically for use the old Post Carry case. I’ll try to provide pics later this week. I’ve experimented with a number of different stems and V1 and V2 Zeno clips. It’s both expensive and time consuming to fill a very niche purpose.
Basically, I remove the stem face plate, remove the stem, disconnect hoses. From there I pull the fork, bag the headset bearings and spacers and it’s ready to pack.
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If you hnow the weight of the Riro stem please let us know, weight and size. Thank you.
Using the 100mm version. If they end up making a 110mm, I’d switch to that. I have weigh my spare one, but it’s definitely +200g.
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Riro 100 mm stem with headset cover and 1 spacer weights 216 grams.