Trek Emonda SLR Color

Discuss light weight issues concerning road bikes & parts.
garysol1
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by garysol1

Calnago wrote:What happened that you needed a warranty replacement?


Well...... Trek and I came to the conclusion that the seatcap was at fault. I was using the fancy SLR10 seat cap that utilizes 2 aluminum barrels that small bolt threads through to tighten up the cap on the mast. See the picture below. What was happening was as the bolt was being tightened it was driving the barrels into the back of the seatmast. This crack happened at 2nm below the max of 7nm. Trek took responsibility and quickly replaced both the frame and the seatcap. I am looking for the picture of the crack on the setmast.... I will update the post once I find it.
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Calnago
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by Calnago

Ah, interesting. You can see where the clamp cracked right at the split. That mast with the double split in it must be fairly recent as well.
So, now my question becomes why the selloff of the replacement for the Domane? Was there something you didn't like about the Emonda?
Last edited by Calnago on Thu Mar 23, 2017 3:12 am, edited 1 time in total.

by Weenie


garysol1
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by garysol1

Calnago wrote:
So, now my question becomes why the selloff of the replacement for the Domane? Was there something you didn't like about the Emonda?


Just wanted to try something different. I am 51 years old and figured I would give a little more relaxed and compliant frame a go. So far I am very pleased with the Domane. I have nothing bad to say about the Emonda at all. It was a really fantastic all arounder and if I could have afforded to have had both bikes I would have loved to of built up the Blue Emonda as well.
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Calnago
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by Calnago

garysol1 wrote:
Calnago wrote:What happened that you needed a warranty replacement?


Well...... Trek and I came to the conclusion that the seatcap was at fault. I was using the fancy SLR10 seat cap that utilizes 2 aluminum barrels that small bolt threads through to tighten up the cap on the mast. See the picture below. What was happening was as the bolt was being tightened it was driving the barrels into the back of the seatmast. This crack happened at 2nm below the max of 7nm. Trek took responsibility and quickly replaced both the frame and the seatcap. I am looking for the picture of the crack on the setmast.... I will update the post once I find it.
Image
Image

I'm circling back here after examining some of these in real life. Your picture shows clearly what is happening. That fancy seat clamp is simply not at all compatible with the new, double slit, seat mast (there used to be just one slit rear center). You can see how the barrels are forcing the two outside edges of the slits into the seatpost itself, with zero pressure on the significant tab between the two slits. Ouch!. I hope Trek has immediately pulled that seat clamp (assuming it was one of their own?) and issued a recall to those who might have them. They're pretty good about that stuff, but your pics are pretty explanatory. Thanks for posting.

garysol1
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by garysol1

Calnago wrote: I hope Trek has immediately pulled that seat clamp (assuming it was one of their own?) and issued a recall to those who might have them. They're pretty good about that stuff, but your pics are pretty explanatory. Thanks for posting.


I JUST logged onto Treks dealer website and that seatcap is still available from them. Part numbers are W440938 and W440937.
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grumpus
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by grumpus

If the barrels pressing into the grooves is the problem, couldn't the clamp just be rotated 180 degrees?

garysol1
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by garysol1

grumpus wrote:If the barrels pressing into the grooves is the problem, couldn't the clamp just be rotated 180 degrees?


'Probably but i'm not up for experimenting on a $3k+ frame.....
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FIJIGabe
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by FIJIGabe

Note to self... check out seat clamp on my old Madone...
Madone 9 https://goo.gl/7UwZpV
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Madone 5 https://goo.gl/cMdyFo

Madone 4, Cobia. I own a lot of Treks.

jeffy
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by jeffy

can someone post a comparison picture of the SL version of the seatpost clamp ...

the mute blue on the new SLR frame does look nice

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Calnago
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by Calnago

garysol1 wrote:
Calnago wrote: I hope Trek has immediately pulled that seat clamp (assuming it was one of their own?) and issued a recall to those who might have them. They're pretty good about that stuff, but your pics are pretty explanatory. Thanks for posting.


I JUST logged onto Treks dealer website and that seatcap is still available from them. Part numbers are W440938 and W440937.

@garysol1: I am not a dealer so can't log into that site, but I'm not sure what those part numbers are for. When you say "seatcap" are you referring to the collar that clamps the seat mast to the frame, or the the seatmast itself? Not sure. Are all the Trek seatmasts now the double slit type? Versus the single slit type that came on my SL?

garysol1
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by garysol1

Calnago wrote:
garysol1 wrote:
Calnago wrote: I hope Trek has immediately pulled that seat clamp (assuming it was one of their own?) and issued a recall to those who might have them. They're pretty good about that stuff, but your pics are pretty explanatory. Thanks for posting.


I JUST logged onto Treks dealer website and that seatcap is still available from them. Part numbers are W440938 and W440937.

@garysol1: I am not a dealer so can't log into that site, but I'm not sure what those part numbers are for. When you say "seatcap" are you referring to the collar that clamps the seat mast to the frame, or the the seatmast itself? Not sure. Are all the Trek seatmasts now the double slit type? Versus the single slit type that came on my SL?



The part numbers are for the entire seatcap assembly in two different lengths. The "seatcap" refers to the clamp and the outer post that slides up and down on the seatmast to allow for saddle height adjustment. The seatmast is part of the frame. The picture below refers t part number W440938. Hope this helps.

Image
Last edited by garysol1 on Fri Aug 04, 2017 8:02 pm, edited 3 times in total.
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Calnago
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by Calnago

jeffy wrote:can someone post a comparison picture of the SL version of the seatpost clamp ...

the mute blue on the new SLR frame does look nice

@Jeffy, here you go... two versions... single slit and double slit... the double slit version is the most recent one. The difference in the SLR version (which @garysol1 showed above) lies in the clamp. The clamp in the pics below goes over the double slits and contacts the middle tab as well, avoiding the possible stress riser situation that seems apparent in the SLR clamp shown in this thread. I should have taken a picture of what I just tried to explain since you can't see that in this pic. But I think you can get the idea. Versus with the lightweight two barrel clamp of the SLR seat cap, there doesn't appear to be any contact with the rear tab at all, and the barrels look they want to just force the outside edges of the two rear slits into the seat mast of the frame. I gave the pics to a Trek Dealer yesterday and looked at their dealer site while I was there, and sure enough, the seat caps are available under the part numbers that @garysol1 provided earlier. So, either Trek thinks the design is ok, and this situation was a random incident, or they haven't really had their engineers pay much attention to it. But from the pics that @garysol1 provided, it certainly looks to me like there "may" be an improvement that could be made in it's design to better prevent the situation Gary showed above.
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DavidMLee
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by DavidMLee

That color is pretty good in images..
I bet Emonda SLR is a fabulous frame.

If you get pretty good deal on this, why not go for it?
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oldnslow2
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by oldnslow2

DavidMLee wrote:I bet Emonda SLR is a fabulous frame.

It is, i have over 11,000 miles on mine and everytime i ride it, it confirms I made a wise purchase.

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rsiv
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by rsiv

oldnslow2 wrote:
DavidMLee wrote:I bet Emonda SLR is a fabulous frame.

It is, i have over 11,000 miles on mine and everytime i ride it, it confirms I made a wise purchase.


I'm looking at building one. Anything that really wow'd you about it?
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