Surprisingly hard to get from LBS or even from mfgs like FSA.

Try: http://veloflyte.com/...headset_dust_shields

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ECMGN Therapy Silicon Valley:
Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)

http://www.slowtwitch.com/Products/Handlebars/Low_Profile_top_caps_4096.html

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Madison photographer Timothy Hughes | Instagram

Go commando!


-SD

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https://www.kickstarter.com/...bike-for-the-new-era

Slamthatstem.com !!!!!!!

They now only sell them through a very limited number of of bike shops. Unless you happen to be near one, you're sol...

http://www.cobbcycling.com/...ssories/5mm-top-caps

http://www.cobbcycling.com/shop/accessories/5mm-top-caps


Thanks John!



or



FSA has an integrated headset with an 8.2mm top cap stack height. Get the headset, and have some extra bearings for the future, but bearings must match. 41mm OD, 36*/45*.


Cheers, Ken

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Ken Nowakowski

ken@probikesltd.com
http://www.probikesltd.com

Cane Creek allows you to buy headset upper and lower assemblies separately from one another. Although it's not just the top cap, it is "theoretically" cheaper than buying the complete headset. Although I found that I could buy the complete headset through Amazon for the same amount that Cane Creek was selling just the upper for through their website. Depending on what you're looking for, this may or may be the case.

Thanks for all the replies. I might go with the Cobb but there is a SlamThatStem dealer near me so I might check that out. I did think about going commando for a sec but that significantly reduces the life of your headset bearings, I would assume.

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____________________________________________

At first I was like, why is the Felt guy posting a Cervelo picture? But I think I see what you did there.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

If you ride in the rain, or on the trainer, definitely.

Or if you spill drink up front a lot.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

I couldn't find a photo of a Felt road bike that required such a radical stem set up. HA! I kid, I kid.

I remembered Ryder's set up as I was lucky enough to be at the '12 Giro on Stage 14 in Cervinia where he took command of the race. Recalling the coverage of his bike before and after the Giro I just searched on images of his bike from that time.

And with 100% sincerity I should state I like Cervelo, their products, the people I've met who work there and their message. We can share a great deal of the same philosophical take on the important focal points of bicycle design despite the differences in execution.

3adu 3adwi hu sadiqi


-SD

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https://www.kickstarter.com/...bike-for-the-new-era

Actually FSA makes a 4.3mm top cap, They are used on Felt's AR series of bicycles (except the AR FRD)

-SD

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https://www.kickstarter.com/...bike-for-the-new-era

That was what I was thinking!
Though Ryder isn't a good example of "damn bike is too tall" since he rides with his bars irrationally low. (I think)

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

he could throw a velolyte on there and have no addition to the stack height.

well, 1mm maybe.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

4.3mm is 430% bigger than what we're looking for here.... ;)

Veloflyte and its ilk are 1mm.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

0<1<4.3<8.2

You sure 4.3mm is 430% more than 1mm?
Is 2mm 200% more or 100% more than 1mm?

-SD

Or he could put a volcano on there and be more comfortable and faster! (I think)

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

I could never figure that math stuff out. I guess 1mm is a million % bigger than 0

:)

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

yeah, I don't know how I feel about that.... I think I ride my bike (S5) hunched over on the tops where I ought to be riding with my hands in the drops, so my bars are way too low. OTOH, I like the comfort of having the tops to lean my forearms on and also have the drops where they are for descending and turning. I know holding the drops at the right height will be slightly more aero than the tops at the same effective body position.

Was it Obree that you posted a pic of a while back, with the giant chain ring and the super high stack stem but perfect drops position?

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

A lot of the top pros in the 60s and 70s had great drops positions with flat forearms. Just seems like the fashion has changed lately.

I do know of one local hero who puts his bars too low on purpose to optimize it for the invisible aerobar position, heh.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
Aeroweenie.com -Compendium of Aero Data and Knowledge
Freelance sports & outdoors writer Kathryn Hunter

On the aero-bars, I seem to drip sweat right on to the steerer. I wouldn't go without one.

Is it total top cap height or the stack height of the top cap? I feel like the two are often interchanged.

Also, do you happen to know if there is any kind of standard on how much the bearing sticks out of the top of the head tube? Or is it totally random making it next to impossible to find a top cap that fits a specific frame without ordering it and just trying it?

Cannondale Supersix Evo cover is 5mm, and widely available and less than $10.

I don't think it fits a P5.

By the way, the VeloFlyte one doesn't either. If anyone is interested in those I have at least 2 unopened ones lying around I'm willing to part with.

The 4.3mm refers to the amount of steerer tube space the cover takes up.

There are simply different standards. Campagnolo, IS2, NO.23, etc...

-SD

Thanks for the reply.

So I assume you mean measure A on this picture:



For people reading: A is the actual extra stack the top cap will result in. Measure B is the total height of the top cap, which is irrelevant if it is made to fit, since the difference between A and B (i.e. B minus A) is already taken up by the bearing sticking up from the head tube.

The problem with the VeloFlyte one is that the fit is bad on the P5, so while measure A is very small (<1mm) measure B is something like 4mm (IIRC) so on the P5 you have to add spacers underneath in order for it not to hit the head tube bringing your total stack back up to almost the same level as a more standard low top cap.

It seems like the Cobb one is 5mm in total height (but I might be wrong), which would mean it would be somewhat less than 4.3mm in stack height. Unfortunately no specs are supplied so who knows which bikes or headsets it fits...

P5 w/ Aduro bar? designed to be run with no top cap at all.

also, the veloflyte does fit on there, I had it on mine, just for fun.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

No, USE Tula with Specialized -22 degree stem currently - need the Aduro X-Lo to hit my stack (don't get me started on 3T recalling and discontinuing the X-Lo...).

I'm pretty sure I tried the VeloFlyte and it fitted like cr*p with the diameter too big and the 'wings' too tall meaning it was grinding on the top of the head tube. I know my team mate has it installed and it is like that on his P5. Maybe there's considerable difference between them because of the manual manufacturing process?

Since I'm planning on modifiyng my setup soon I might try it on again, but I'm not holding my breath...

you can totally shave that thing down, and put the included .5mm shims under the veloflyte to bring it up slightly.

Also, I run mine with a rubber gasket pulled out of a normal headset dust cap for extra protection.

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

Thanks, I might take a look at doing that. I think I needed more than the included shims to bring it up high enough to not hit the head tube. How do you go about filling it, I remember it felt very flimsy?

Good idea with the rubber gasket.

I would use very fine sand paper

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Eric Reid AeroFit | Instagram Portfolio
Aerodynamic Retul Bike Fitting

“You are experiencing the criminal coverup of a foreign backed fascist hostile takeover of a mafia shakedown of an authoritarian religious slow motion coup. Persuade people to vote for Democracy.”

SD

To your knowledge, is that 4.3 FSA available as an after market item or only OEM?

Thanks,

Ken

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Ken Nowakowski

ken@probikesltd.com
http://www.probikesltd.com

OK, I'll probably give that a try and see if I can get it to work.

Do you by any chance have a picture of it installed on the P5?

I am guessing you don't want any shims under it as you are running a -22, kind of defeats that purpose.

did your p5 not come with a cap originally? seemed like many shops were installing a cap under the aduro without knowing you did not need to use it. I think I have one, somewhere, I can check

Exactly, the closer I can get to -17 the better.

It did come with a fairly low FSA top cap, 7-8mm in total height IIRC. It's what I've been using, but if I can find another one that fits and can shave off a few millimetres of height I'll take it.

I think it would depend on where you are buying your FSA parts from. i.e. a distributor or from TH directly in Taiwan.
I would be surprised if the FSA distributor in Canada for example stocked these parts in aftermarket.

-Dave

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https://www.kickstarter.com/...bike-for-the-new-era

Does anyone know the outside diameter of the Cobb top cap/dust cover. I'm looking to match to a frame that is 47mm at the top of the head tube. Thanks.