Threadless Conversion Headset
#26
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I just want to first applaud and second know where and how to buy it: If I search for "innicycles" on Amazon will I find your product? Or contact you directly?
#28
Senior Member
Thread Starter

For now, it is best to contact me directly if interested. Amazon ordering will happen, just not there yet.
#29
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Thanks! I am constantly looking myself, mostly just hoping for a screaming deal on something even nicer than my 660, and sometimes paying attention for something that will fit my wife...Plenty to choose from if you aren't on a tight budget, and good groupsets, wheels, and cockpit bits are pretty cheap these days.
#30
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Amazing - thanks for sharing this. It's so interesting to see such smart innovation "as it happens in real time." I realize you must have been working on this for quite some time, but relative to the time line of commercial products, we're seeing this very early. I don't know what the market might be for this product, but it's not going to make anyone a millionaire, so it's also interesting to see a product being developed by someone who just wants it, and is willing to develop a high quality solution primarily out of passion for the idea. Very cool indeed.
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#31
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Add another VERY pleased owner of one of these brilliant headsets. Well done, Joe!!!!!!!
I'll get some closeups soon, but at the risk of overposting the post-build photos, here's one that shows how the stem integrates with the bike:
I'll get some closeups soon, but at the risk of overposting the post-build photos, here's one that shows how the stem integrates with the bike:

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#32
Senior Member
sorry if this offends you @joejack951, but do you have any production samples using a "regular" top cap for sale? I've got a few sweet top caps I'd love to use with my ironman and a 31.8 bar.
#33
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Thread Starter
sorry if this offends you @joejack951, but do you have any production samples using a "regular" top cap for sale? I've got a few sweet top caps I'd love to use with my ironman and a 31.8 bar.
The inni top cap is more like that on a standard threadless adapter: it has the support the wedge which is anchoring the quill into the steerer tube. This is a pretty critical job if you can imagine and the top cap has to be designed to support that load. The early prototype top caps I made were designed around an M8 socket head cap screw, much like you'd find on a threadless adapter. The new top cap design use an M8 stud integrated into a broached aluminum cap, which I think looks far cleaner and left more room for logos

If you want to customize your headset, let's talk and perhaps we can get you what you want without compromising the design/safety.
#34
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I'd say it creates a business opportunity, one that I plan to address once I get this headset moving more! I'm willing to talk now to anyone who wants something sooner, just be warned that the price will reflect the prototype nature of the stem.
#35
Senior Member
How much steerer tube can fit in there?
#36
Senior Member
Thread Starter
Good question, and I will be updating my spec list above with this info:
Steerer tube requirements:
1. Must be 27mm min/45mm max longer than bare headtube measured from fork crown
2. Threads on steerer tube must end no more than 16mm above the edge of the bare headtube (using fork crown as reference)
I need to take some pictures demonstrating how to take these measurements but hopefully they make some sense already. And regarding those measurements, most paired frame/forks will meet those specs. The only ones that won't are when numerous/thick spacers are used between the jam nut and upper race. When trying to combine some random frame and fork that have never previously been assembled, you will want to take some measurements first. Too short is a safety issue. Too long and you won't be able to preload the headset bearings.
Steerer tube requirements:
1. Must be 27mm min/45mm max longer than bare headtube measured from fork crown
2. Threads on steerer tube must end no more than 16mm above the edge of the bare headtube (using fork crown as reference)
I need to take some pictures demonstrating how to take these measurements but hopefully they make some sense already. And regarding those measurements, most paired frame/forks will meet those specs. The only ones that won't are when numerous/thick spacers are used between the jam nut and upper race. When trying to combine some random frame and fork that have never previously been assembled, you will want to take some measurements first. Too short is a safety issue. Too long and you won't be able to preload the headset bearings.
#37
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#38
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Thread Starter

The intent of that measurement is to ensure that there are enough threads on the steerer tube so that the adapter can thread on as far as it needs to. Depending on the excess length of steerer tube present, that could be anywhere from 29mm of threads required (45 [max length steerer] - 16) or only 11mm (27 [min length steerer] - 16). Does that help?
A picture is worth a million of my words so I will work on that.
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Sorry for the hijack but on a related note does anyone remember the Hetchins thread that had the tall stack quill stem setups that were done by the shop in Phoenix?
#40
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Reading through the thread, I didn’t see what might be yet another market for you. Weve seen a few damaged fork threads posted on BF, and some steerers cut just a bit short for most any standard quill type headset.
Am I correct in seeing that this could be a nifty “problem solver” fot those instances?
Am I correct in seeing that this could be a nifty “problem solver” fot those instances?
#41
Jedi Master
Over the weekend I was riding one of my old bikes with a nitto pearl stem that squeaks sometimes and found myself thinking about replacing it with one of these super-cool threadless conversion headsets. While modern threadless stems are functionally superior to a quill stem in just about every way, I still prefer the aesthetics of a quill stem on an old steel frame. I do have some modern steel frames with threadless headsets and stems that I've learned to live with so still considering.
#42
Senior Member
Thread Starter
Sorry for the slow response. I am alive just coming off a holiday weekend and not feeling 100%. Headsets are still available and I will be in touch with everyone who has requested one today.
#43
Senior Member
Thread Starter
Reading through the thread, I didn’t see what might be yet another market for you. Weve seen a few damaged fork threads posted on BF, and some steerers cut just a bit short for most any standard quill type headset.
Am I correct in seeing that this could be a nifty “problem solver” fot those instances?
Am I correct in seeing that this could be a nifty “problem solver” fot those instances?
Over the weekend I was riding one of my old bikes with a nitto pearl stem that squeaks sometimes and found myself thinking about replacing it with one of these super-cool threadless conversion headsets. While modern threadless stems are functionally superior to a quill stem in just about every way, I still prefer the aesthetics of a quill stem on an old steel frame. I do have some modern steel frames with threadless headsets and stems that I've learned to live with so still considering.
I appreciate the comments/feedback from all of you!
#44
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#45
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Any plans for a JIS version? (30.0mm cups and 27.0mm crown race) I have an '80 Trek that I've been trying to find the right stem for that is not only tall enough but doesn't look funny. This is the solution I've been looking for!
#46
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#47
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You could, as noted, adjust your frame and fork to ISO specs as one option. Another, even lower effort option is to just press the ISO spec cups into the JIS frame, something which apparently gets done quite frequently without issue. The crown race ID is easily opened up to JIS specs with an adjustable reamer (I can do this for you). If the thought of using JIS cups in an ISO frame is too much for you to bear, we can talk about modifying those, too.
#48
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Thanks, I'll go the milling route. Just picked up a park tools head tube reamer on ebay. PM incoming.
#49
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Ordered one last night on amazon,should be here tomorrow.Going on a 81' trek 710.
#50
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And yes, it's true. After way too long in the making, the innicycle conversion headset is finally order-able (and with expedited shipping available) all without having to deal with me
