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PostPosted: Sat Aug 16, 2014 6:10 pm 
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OMG that is fugly! Cut the top and if anything, make a nice tapered topcover to go between the headset and stem.

My eyes hurt looking at that thing. And the FEA on it... for 50ft/lbs. All you want is a bit of compression, not much at all, just to take the play out before tightening the stem to the steer tube. Chris King recommends 15in/lbs. And once the stem is tightened the top cap provides no purpose at all other than aesthetics.

But I do appreciate nice pics of machining exercises, but a hacksaw would provide a much nicer result in this case.

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PostPosted: Sat Aug 16, 2014 8:38 pm 
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OP, you may need to put a condom on that thing for safety's sake.

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Posted: Sat Aug 16, 2014 8:38 pm 


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PostPosted: Sat Aug 16, 2014 9:24 pm 
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I like it. You do you, man.


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PostPosted: Sun Aug 17, 2014 1:17 am 
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Calnago wrote:
OMG that is fugly! Cut the top and if anything, make a nice tapered topcover to go between the headset and stem.

My eyes hurt looking at that thing. And the FEA on it... for 50ft/lbs. All you want is a bit of compression, not much at all, just to take the play out before tightening the stem to the steer tube. Chris King recommends 15in/lbs. And once the stem is tightened the top cap provides no purpose at all other than aesthetics.

But I do appreciate nice pics of machining exercises, but a hacksaw would provide a much nicer result in this case.


Actually I mentioned that 50 lbf is so that it can withstand being gripped in the vice on the mill.


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PostPosted: Mon Aug 18, 2014 6:59 am 
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I like the square corners. When I saw the cad model I laughed and said "this guy thinks he's going to machine internal squares with round end mills." Took me a minute to figure it out. Nice work.


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PostPosted: Mon Aug 18, 2014 10:13 am 
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Cut the extra steerer tube and leave only a 3mm spacer on the top of the stem.
And design one shorter one, to replace the spacer under the stem.

If you have free time, design one with integrated headset dust cap also, so it will be one, lightweight piece under the stem.

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PostPosted: Mon Aug 18, 2014 10:19 am 
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Well it looks nicely made but with that much steerer above the stem, where exactly is the anti compression bung sitting in relation to your stem?


Seriously it needs cutting down or you run the risk of failure....

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PostPosted: Mon Aug 18, 2014 12:24 pm 
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ToffieBoi wrote:
Cut the extra steerer tube and leave only a 3mm spacer on the top of the stem.
And design one shorter one, to replace the spacer under the stem.

If you have free time, design one with integrated headset dust cap also, so it will be one, lightweight piece under the stem.


Yes. Do this. :thumbup:

jekyll man has a good point - on many steerers the bung inside is "needed" to support the steerer where the stem clamps and attempts to crush it.

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PostPosted: Tue Aug 19, 2014 1:53 am 
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Hey guys, thanks for the safety concerns. Y'all have convinced me that I should cut my steerer soon! But in the meantime, check out my latest piece!

No fabrication photos this time, sorry. It's more or less the same as the spacer anyhow.

Image
Finished bearing cover!

Image
This piece focuses more on strength and weight then on aesthetics and flowing lines.

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Ritchey bearing cover + 2 carbon 5mm spacers.

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My cover.

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Installed. You'll notice a 5mm spacer and a top cap. That's gonna be one piece soon, once my Ti bolt arrives this week. :D

Please refrain from telling me to cut my steerer, I'm already convinced. I'll do it soon, I promise! :thumbup:


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PostPosted: Tue Aug 19, 2014 2:11 am 
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Joined: Sun Mar 16, 2014 3:43 pm
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To complement it you only need a helmet with this design and you are finished . . . :lol:



Seriously:
Think you better use a Conical Tapered Spacer for under the stem. >>

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PostPosted: Tue Aug 19, 2014 2:44 am 
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Joined: Thu Aug 23, 2007 4:59 pm
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Location: colorado
the lower headset top plate/spacer looks good

always appreciate custom work

nice job


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PostPosted: Thu Aug 21, 2014 10:12 pm 
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Finished top cap + 5mm spacer combo - here's a teaser pic with my sweet Ti bolt from eBay. Weights tonight. Probably cutting the tube this weekend.

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PostPosted: Fri Aug 22, 2014 1:44 am 
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Image

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Surprisingly the Ti bolt is heavier than the regular (probably steel?) bolt. Probably cuz of the countersink.

Image

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PostPosted: Fri Aug 22, 2014 6:16 am 
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Love the dustcover/bearing cover, I would love a flat one similar to the old Slam That Stem ones.

Any chance of putting an order in? :D


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PostPosted: Fri Aug 22, 2014 11:32 am 
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Joined: Fri Feb 10, 2012 4:27 pm
Posts: 311
your FEA load conditions and BCs seem a little off. but then again, you're using Solidworks for FEA, so I suppose you're limited in that regard...


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Posted: Fri Aug 22, 2014 11:32 am 


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