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Re: The definitive thread for 1-1/2 Internal Routing headsets... (or) wtf tho?
I actually have found myself with a small business making and designing headset covers to be adapters for these integrated routing. Below is a summary of what I know. It’s certainly not definitive and applies more to mainstream brands than chinese brands, but I hope it’s helpful. I also hope, I dont make too many errors here as I try and type out what i know. The first thing to know is that there isnt a single bearing size. The bearings are sized by ID (inner diameter), OD (outer diameter), two chamfers which are denoted InnerXOuter, and by H (height). The bearing size is going to be frame specific, so you should always check to make sure you are getting the right one. For example there OD ranges from 49.5-52mm, ID from 39.5-42mm, ACB is usually [36 or 45] X 45. Different brands also have different designs for their headset compression rings and systems. Here is a rundown of the most common ones in no specific order. There is no compatibility across these systems unless you are using a system designed to provide it. FSA ACR (also used by Bianchi, Merida, Orbea, and Winspace)—uses a 40mm ID, 52mm OD, 7mm H, 36x45 bearing. How far in the frameset the top of the bearing sits depends on the brand as does the resulting design of the compression ring, but generally should sit 4mm deep in the frame. However, 2.5mm depths are also common as are 1mm depths. Compression ring is alloy and ~7mm thick. This is the most commonly used system by a wide margin and there are compatible parts made by other manufacturers. Deda DCR (used by Time, Van Rysel, Botechia, prior gen Colnago Bikes and MANY smaller brands like Standert)—uses a 52mm OD, 40mm H, 8mm H, 45x45 bearing. Compression ring is a 15-20mm deep high pressure injection molded Nylon item. Depths again can vary for specific models of bike, but most are ~4mm deep. However, Deda does make a variety of C Rings of varying heights and to fit both 45x45 and 36x45 bearings in an attempt to make their system more universal. Deda does make shims for these, but they can be hard to find. IMO, this is the system easiest to retrofit to a frame. Token/Enve (also used by no 22 and Ventum)— uses a 52mm OD, 40mm H, 8mm H, 45x45 bearing. Compression ring is composite ~7-8mm thick. These come with a set of shims and can be a good fit if you can find them. Acros (used by Canyon, Focus and Scott)—these solutions vary a lot but the most common uses a 42mm ID, 52mm 6.5mm H, 45x45 bearing. Compression ring design varies from nylon with metal inserts to just nylon and are <10mm thick. I would use this only with an Acros bearing because of the dimensions. Trek— 40mm ID, 51mm OD, 6.5m H, 36x45. Compression rings and headset spacers are nearly model specific at this point, however the Domane Gen 4 alloy compression ring and spacers are considered a service part for most of the models, so their use is Trek OK with. Unless you have a burning desire to fit a trek cockpit to your bike. Its probably best to avoid for other bikes. Specialized— 40.5mm ID, 49.5 ID, 6.5mm H 45x45 bearing, SL7/Allez sprint use an alloy compression ring, post recall this is a two part item. SL8 uses a composite ring. Both versions then use the same spacer. Their fitment varies by model again. This is again an avoid using part unless you have a perfect match in terms of bearings. The compression ring is not the right fit for non Specialized bikes and the current SL7 version is a recall fix for their specific bikes. Cervelo— 34.1 ID, 46.9 OD, 7mm H, 45x45 bearing— These use a proprietary everything including steerer shape. Of these only the FSA, Deda, and Enve are designed for aftermarket use with the first being the most common, and a lot of space between the use of the Deda system and the Token. There is no guarantee that these will fit on your bike without measuring width a depth gauge. For safety you absolutely should match both the chamfer and height. Because of the way the Deda and Token systems work you can use shims inside the headset. With Deda, you can just cut delrin DUB crank spacers into a C shape and use those as well. I personally, would be wary of using a 3d printed or generic plastic compression ring, especially if they struggle to hold preload as the injection molded engineered nylons typically used for these parts are quite a bit stronger than can be produced with 3d printing. This is a pretty important part of the bike to get right and a loose headset is one fastest ways to kill a carbon frame. Hope this is helpful to someone and thanks for reading this novel of a post. EDIT: I should have added that a good number of the chinese integrated bars can either fit directly to an FSA split spacer or come with a transition spacer for the FSA system, so thats a good system to use from a compatibility with bars standpoint. The Deda system is more frame compatible. July 28, 2024, 11:09:34 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Do you have evidence that he is lying? He called out other YouTuber for making reviews without mentioning the conflict of interest (the elves frames). So that would mean he would be accused of being a hypocrite? I am not trying to defend him, I think he could be a bit more mature about women, but let's not accuse him of something without tangible proof, please. September 22, 2024, 09:58:54 PM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Not sure what you're on about. Where does it say that something regarding QC is "optional dependent on price"? Lightcarbon specifically states that they produce their frames to the Z3 standard.I think the point here is that @tiagosantos_ss received the frame with some truly ugly voids on the inside surface. Considering the statement of LC that all of their frames are of LCR017 of Z3 standard you are still at risk of getting unridable frame. Of course, if every 5th frame is quality checked for some defects, there's still a risk of getting shitty frame. Let's see how it will be resolved for him. September 23, 2024, 08:34:05 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
even then, the restaurant should be given the opportunity to make it right. I agree, as per my previous post. A factory that makes 1000 frames will have more QC issues than one that makes 10, assuming a constant error rate. And Yishun is very big, afaik. So while i'm disappointed by their reaction to the swiss cheese frame, taking a step back, yishun / lightcarbon is still a seller with great reputation overall. So the restaurant analogy isn't quite right. On clearance, it's rated 32C, not 32mm, so you can run a 32C tyre on a wider than 32mm rim, your tyre will measure 32-33-34...mm and you'll be fine. If you're saying you want to run a 35C tyre, then it's a different question. On my LT268, i have a 34mm rim and a 32C tyre, and i have loads of space all around. the frame is also rated 32C. October 05, 2024, 03:14:21 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Well, this one is mine. Looking forward to it being shipped. Let’s see what happens after the cheese incident... October 21, 2024, 01:12:50 PM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
not to worry, i have ordered an endoscope already and intend to thoroughly check the frame once i have it in my hands. I will share here if i find any issues. I’m on same boat and forced to bought an endoscope because of these issues. It's really sad that customer have to make a QC, but like already mentioned, I also have a whole winter to try to get things right. October 22, 2024, 07:40:01 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
Seems like it would be easier to have the manufacturer send a video with their own boroscope. Then you dont have to buy a camera or go through the hassle of swapping frames. And it will force them to step up their QC That's unrealistic given the amount of frames made, the time and labor effort required. Best chances are to get your own, inspect and get a replacement if problems arise. October 22, 2024, 09:46:27 AM |
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Re: New frame: Longteng RD301-D
for my cover, there's nothing need to be "aligned", the cover closed and locked snugly. Just with bare hand I can lift the cover so easily. Mostly likely the whole piece will fell off easily over a bump. Currently I'm tying a velcro strap over the downtube to strap it down just with a piece of mine. Well, here is how mine looks: https://youtu.be/eT8vtAXO97c?si=5btSdcJY2rwItIvu (internal storage updates at 7:15). It's not a big issue for me, fortunately. November 13, 2024, 10:14:10 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
While I'm still waiting for delivery of my frameset and wheels, I would just caution you selecting this frame based on your weight and intended use. This is a claimed "superlight" frame, and I would be hesitant to go with that frame and rather go with a more beefy frame.Down the thread there was a discussion about two versions of the frame: super light and normal, they have 100 kg and 120 kg weight limit. IIRC, they do not offer normal version anymore but I suggest @Maozi to contact LC directly and ask if they have regular version. I've had some 'cracking experience' with LC before (check Saint Piran UCI stickers thread), specifically LCR0X, and upon further investigation my local carbon repair guy told me the failed area (top tube, where seat post clamp seats in) was poorly reinforced for the expected load. It was eventually fixed and not a critical failure, but it is not pleasant to drop off your main racing bike for over a month. Luckily, it was the end of the season already... December 01, 2024, 04:48:49 AM |
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Re: Lightcarbon: New LCR017-D (or Yishun R1058-D)
I'm 100kg in weight, and 187cm tall, and I'm looking at the 58cm size. I'm planning to do a lot of sprint training on my new bike, and I'm wondering whether I'm risking my collarbone and teeth trying to save 500 dollars. Welcome! I've cycled with a lot of people, I can't think of many guys who were 100kg. Point being: you are very much an outlier at that weight. 2 consequences: as advised above, it's probably not advisable to buy a very lightweight frame. The thing is, you'd probably be fine, but if you're not, you'll end up paying for it in ways that retrospectively you'll feel were silly for the 100g of weight saved. Second, tyre clearance. Enjoying the bike is directly linked with comfort, even if nobody really wants to hear that. At that weight, honestly, I'd advise you run bigger tyres than 32C. And so, if you want to look watch YouTube content, the videos on the latest endurance/ all road bikes by Ribble may help. And Pirelli launched 35 and 40C slick tyres and they said they can't make enough of them, they fly off the shelves. So I'd suggest you look at long teng 301, for example. From the top of my head I can't think of too many road bikes that can take 35C or more, without becoming gravel bikes. I'm 80-84kg. 20 extra kilos is a LOT of weight without adjusting carbon materials, tyre volume and so on. So, ultimately, get something that clears (way) more than 32C for comfort, and confirm with the factory that at your weight, they have no reservations. What matters is that you enjoy your time on the bike, safely. December 01, 2024, 08:50:23 AM |
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