I need to purchase a headset for a Planet X Stealth Pro Carbon / TT frame I bought…I have not received it yet, so I cannot check the diameter of the bearing needed for the headset.
Does anybody know what the integral cup diameter is in the frame?
Please, don’t say to call Planet X…i’ve sent e-mails and have tried calling. I’ve received no response in three days.
The new US distributor for Plantet X is here on slowtwitch and in Ohio. They can tell you. I believe it is a std. 1 1/4" cane creek, 45 degree internal headset though - nothing unusual.
Cane Creek standard as Rod said. Any shop should have them on hand for +/- $30
Since I have a Planet X Stealth I can tell you that you have been given some bad information. It uses the Campy style drop in headset. Colorado Cyclist has the carbon topped one on sale for $49.
? R10C and I both also have have a Stealth Carbon Pro with Cane Creek headsets in them (since I built it and so did he). I also spoke directly with Planet X when building mine since I rode for their team “Tyros” and this was the headset and info they gave me. The specs for the Campy headset may be the same? You didn’t say.
Bah, what do we know?
I believe it is a std. 1 1/4" cane creek, 45 degree internal headset though - nothing unusual.
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I am pretty sure it is 1-1/8".
45 degrees means it is a “Campy standard”.
This is what I have on mine.
http://aebike.com/page.cfm?action=details&PageID=30&SKU=HD4635
It does say thst it’s 1-1/8th Campagnolo compatible.
TH brand 45/45 degree
You are right about the 45deg…I know that my TOP CAP at least is (was) Cane Creek as OE - for all I know ZedSports just got some stock bearings and some Cane Creek top caps. Never had any issues thus I never worried about it.
Cane Creek does sell some “Campy standard” headsets called the IS-8i and IS-3i. They are also called “Italian standard” some times.
The others are Cane Creek standard and TH standard. They just use a different angle on the races.
Almost all integrated headsets are made by TH Industries and sold under other brands.
It’s an old topic, but I still have this question and the above answers don’t quite answer it.
My good old Planet X Stealth Pro Carbon seems have rusty headset bearings. I want to replace them, but there is no info whatsoever on any part of the headset. Except 45 degree. So that’s one thing. I tried to measure the outerwidth and innerwidth of both the top and bottom bearings. But they don’t translate well to anything i can find online (or offline).
Does anyone have any idea what to buy? From what I’ve Googled it’s most likely a FSA Orbit CE IS42/28.6 - IS42/30 Integrated Headset. But in the reactions above people think it’s a 1 1/4" headset instead of 1 1/8th. What I measured is different for both.
Bottom: 41.6mm outer width, 30.8mm innerwidth, 6.3mm height
Top: 41mm outer width, 30mm inner width, 6.1mm height
There seems to be a difference if your frame has disc brakes or rimbrakes. Also if you have inner- or outer cables. I have rimbrakes and outercables.
We’ve had three Stealth’s in our household over the years. The headset is standard 1 1/8", top and bottom. If you pull your fork, you’ll note that the steerer tube does not increase in diameter near the crown race.
We’ve had three Stealth’s in our household over the years. The headset is standard 1 1/8", top and bottom. If you pull your fork, you’ll note that the steerer tube does not increase in diameter near the crown race.
Thanks for your reply! Do you perhaps know what I should be looking for in terms of size (outwidth, innerwidth, height)? Top and bottom are different I suppose? I am totally new to headset bearings… Or will the FSA Orbit CE IS42/28.6 - IS42/30 work fine?
According to my emails, when I was buying a headset for a Planet X Stealth in 2014, it was an FSA Orbit CE like you have in your post.
The ISO number you wrote checks out but unlike the Cane Creek version, this needs to be a 45/45
https://shop.fullspeedahead.com/en/prodotti_1/headset-spares/orbit-ce
According to my emails, when I was buying a headset for a Planet X Stealth in 2014, it was an FSA Orbit CE like you have in your post.
The ISO number you wrote checks out but unlike the Cane Creek version, this needs to be a 45/45
https://shop.fullspeedahead.com/...dset-spares/orbit-ce
Thanks for digging in your mail! The 45 is the degree of the angle I think. The 42 in the ISO is the width. If I am right it should fix. Full specs of the shop I was looking at:
Model: Headset FSA Orbit CE (1 1/8" integrated IS42 - IS42)Type: Integrated (IS)Steerer: 1 1/8“Bearing: Industrial ball bearingsUpper:
1 1/8" / 45°x45° - IS42/28.6Outer diameter: 42mmLower:
1 1/8" / 45°x45° - IS42/30Outer diameter: 42mm
We’ve had three Stealth’s in our household over the years. The headset is standard 1 1/8", top and bottom. If you pull your fork, you’ll note that the steerer tube does not increase in diameter near the crown race.
Thanks for your reply! Do you perhaps know what I should be looking for in terms of size (outwidth, innerwidth, height)? Top and bottom are different I suppose? I am totally new to headset bearings… Or will the FSA Orbit CE IS42/28.6 - IS42/30 work fine?
Im sorry, I forgot this. FSA Orbit (or equivalent)
Thanks all, I’ve ordered the Orbit. I found it cheap at some German shop for 25 bucks including postage. Free return if it’s not the right one. I’ll post here if it works for future searchers 
I bought the Orbit and the very first part, the non-split crown face, didn’t fit. I couldn’t push it down. I Googled and found a lot of people with the same problem. Some were succesfull with a pipe and a hammer, but that was a bit too harsh for me. I tried the old (split) crown face, but that didn’t connect with the bearings well so that was no option. Eventually I cut the non-split crown face to make it a split one. That worked. The bearings were able to fit despite of the extra millimeter of play.
I believe it is called a crown race.
And it should be installed with a “pipe” and a hammer.
My bad, English isn’t my best foreign language
I Indeed tried hammering down a plastic tube. But without a hammer. I was too afraid to damage the carbon. The old one was split and the bearings were sealed so, I guess this will do. It worked well for almost a decade with a split one before.