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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Aerodynamic Retul Bike Fitting

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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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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.