Jeepers! A+ for effort, at least. hope it works for you !?

Used it for a 50 mile TT yesterday. Front end seemed rock solid, and I drew a line down it with a marker so I could see afterwards if anything had moved relative to anything else, and no movement was evident.

I'm not a Sigma owner, just an admirer of ingenious DIY solutions like this. Chapeau!

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CodyBeals.com | Instagram | TikTok
ASICS | Ventum | Martin's | HED | VARLO | Shimano | 4iiii | Keystone Communications

Hello prattzc and All,

What are your thoughts on using titanium for the part?

Overall it would be a) heavier and but b) less material could be used because of the increased strength .... corrosion resistance is good.

How much more costly would you estimate the manufacture of small bicycle parts from titanium rather than aluminum in small lots?

Cheers,

Neal

+1 mph Faster

Titanium is much more expensive (both to purchase and to machine) than aluminum. For something like a stem I would expect it to be 2-3x the cost of 7075.

Will the Sigma XF have the same minimum steerer tube requirement?
I measure the current minimum to be19mm.

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/Howie Nordström

Yes, the Sigma XF (replacement for Sigma Flat) has the same steerer-tube clamping zone. The Sigma N35 is identical to its predecessor (the Sigma 35) in all respects other than material.

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TriRig.com

Hey Nick,
Any update on the new Sigma? Please save my butt from doing another 5h trainer ride!
Thank you!

Hi sp1ke, we're working hard to get these finished. Thanks for your patience, and sorry for the inconvenience.

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TriRig.com

Just got a refund from TriRig for the Sigma I sent back. Replaced it in order to train and race, then decided to keep using the new stem vs. having a spare.


Road a bit (climbing & leap frogging) with a guy during IMCanada yesterday who was fully kitted with TriRig parts on his new P3, even had the Sigma 35 still on the bike.

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/Howie Nordström

So, so ready... How about a beta test? ;-)

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-Alex

> Replacement stems will be ready in the next 8-12 weeks, possibly sooner.

It has now been 8 weeks since the mail, could we please get some more details about the replacements. Sooner didn't work out, but what are we looking at now, shipping next week, end of month or what? I just want to use my tri bike again, need that stem. Got new wheels and all...

Have you not been riding because you're waiting for a stem? Go pick up a $15 take off from your lbs.

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____________________________________________________

I've been using my cyclocross bike lately. But, I would like to start using the tri bike, on which I had a slammed Sigma. Not enough steerer tube to mount a regular stem.

Anyway, think an update from TrRig would be in place.

That makes sense.

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____________________________________________________

An important announcement will be sent via email some time this week :-)

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TriRig.com

Is the stem cover / cap thingy on the new Sigma flat compatible with the old one on the recalled stem? I've got my shift cables routed through it (see pic below) and was wondering if I could avoid recabling when I install the new stem.
Thanks!

Unfortunately, not. The Sigma Flat cover is not compatible with the Sigma XF. You may be able to avoid a recabling if you're handy with a saw or dremel -- you could cut across the stem cover in this spot, freeing your cables:

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TriRig.com

Got it. Thanks!

Are the new ones available?

You should probably send in the old one first.

Yep, acco has it right. As we've consistently stated from the very beginning, we MUST have your old stem back (or proof of its destruction) before your replacement stem will ship. I know this isn't fun or convenient for anyone, and I apologize. But there are no exceptions here.

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TriRig.com

Got mine new stem in the mail yesterday. Even though it was a pain switching and waiting TriRig had great customer service during this issue.

Finally got mine, well done Nick. Especially like that there are separate screws for cover and BTA.

Got mine on Friday, playing around with the installation right now.

Damn, that's a short steerer tube cut... Like 22mm above the headcap. Oof...

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-Alex