Sigeyi Direct Mount Derailleur Hanger (Quick Review)

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Roadrocket
Posts: 355
Joined: Wed Aug 29, 2018 8:43 am
Location: Slovakia

by Roadrocket

bigfloor wrote:
Wed Dec 01, 2021 8:42 pm
Yes. Re-use the original screws/backplate. Baffled me as well for my nr 25 hanger (Canyon Ultimate CF SL)

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Thanks, will do. Anyway the bolts are not correct size.

Pretty weird they do not supply correct bolts/backplate with the hanger for this price. What if I don´t have original hanger? Would have to buy both Sigeyi and Canyon hangers to make the Sigeyi hanger working. And different length bolts as well.

Muck
Posts: 7
Joined: Thu Jul 02, 2020 7:44 am

by Muck

check your hangers fellas, mine is in 2 pieces after this weekends ride.
no signs whatsoever that failure was imminent. was shifting perfectly and out of no where its just failed.

Image

by Weenie


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nunokas
Posts: 148
Joined: Tue Aug 26, 2014 3:18 pm

by nunokas

Muck wrote:
Wed Apr 20, 2022 8:24 am
check your hangers fellas, mine is in 2 pieces after this weekends ride.
no signs whatsoever that failure was imminent. was shifting perfectly and out of no where its just failed.

Image
How many miles on it?
Supersix hanger?

alanyu
Posts: 1503
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

Muck wrote:
Wed Apr 20, 2022 8:24 am
check your hangers fellas, mine is in 2 pieces after this weekends ride.
no signs whatsoever that failure was imminent. was shifting perfectly and out of no where its just failed.

Image
Something must have hitted/stumbled your hanger/RD. The hanger is clearly twisted.

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ms6073
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by ms6073

Muck wrote:
Wed Apr 20, 2022 8:24 am
check your hangers fellas, mine is in 2 pieces after this weekends ride.

Image
Are you using 3rd party/aftermarket Ti/alloy derailleur pulleys with sealed bearings? My experiene with those type of pulley's on road and CX bikes is that the lower pulley does not afford near as much lateral play as stock derailleur pulleys, so if something causes the chain to get slightly misaligned such as hitting a bump while somewhat cross chained, the chain can jump and gets snagged in the cage which in turn can cause either the cage and/or the hanger to deform (twist).
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Klaster_1
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by Klaster_1

ms6073 wrote:
Wed Apr 20, 2022 7:35 pm
Are you using 3rd party/aftermarket Ti/alloy derailleur pulleys with sealed bearings?
As an illustration, here's what happens when an aftermarket pulley jams the chain.

Muck
Posts: 7
Joined: Thu Jul 02, 2020 7:44 am

by Muck

its a sigeyi hanger, roughly 8000-9000km on it.
cbear pulleys.
derailleur and cage show no signs of damage.

i dont recall anything out of the ordinary on that ride.

johanalexander
Posts: 177
Joined: Wed May 09, 2018 8:32 am

by johanalexander

Might have been covered before, but when installing, do you have to disconnect the hanger (mechanical, disc brake) of is it possible to leave the wires attached?
Eating trash'n riding fast

alanyu
Posts: 1503
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

johanalexander wrote:
Wed May 18, 2022 11:37 am
Might have been covered before, but when installing, do you have to disconnect the hanger (mechanical, disc brake) of is it possible to leave the wires attached?
Yes, my DM hanger (not Sigeyi one) was installed with the cable attaching.

Bt248
Posts: 21
Joined: Mon May 15, 2023 6:43 pm

by Bt248

Klaster_1 wrote:
Tue Mar 16, 2021 7:21 pm
openwheelracing wrote:
Tue Mar 16, 2021 4:49 pm
Anyone know other manufacturers besides Siyegi and Wheels Manufacturing? I just got a Time Alpe D'Huez rim but can't find a direct mount hanger.
Mine was machined by Velofrezer, but I had to design a hanger myself.
bro, can you show me some design guidelines ? spacings and what not, I have the means to design one but I have no guidelines to work off of

trex
Posts: 48
Joined: Thu Jan 18, 2018 8:42 pm
Location: Catalonia

by trex

Did anyone notice that the hanger wipes off the paint/anode on the derailleur?
A bit of a shame that such a small part damages a much more expensive one.
Attachments
sigeyi1.png
sigeyi2.png

LanceLegstrong
Posts: 1145
Joined: Fri Sep 13, 2019 1:35 pm

by LanceLegstrong

trex wrote:
Thu Aug 17, 2023 4:22 pm
Did anyone notice that the hanger wipes off the paint/anode on the derailleur?
A bit of a shame that such a small part damages a much more expensive one.
That to me looks a Shimano RD problem. Poor paint job. I'm not sure how the hanger would do that.
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trex
Posts: 48
Joined: Thu Jan 18, 2018 8:42 pm
Location: Catalonia

by trex

It is definitely a hanger. This is what the derailleur looked like out of the box - there was none of that wear and tear.
When the rear wheel is removed, then the derailleur has a greater range of movement and this problem arises.
LanceLegstrong wrote:
Thu Aug 17, 2023 4:38 pm
trex wrote:
Thu Aug 17, 2023 4:22 pm
Did anyone notice that the hanger wipes off the paint/anode on the derailleur?
A bit of a shame that such a small part damages a much more expensive one.
That to me looks a Shimano RD problem. Poor paint job. I'm not sure how the hanger would do that.
Attachments
rd-r8150 (002).jpg

midpackfinisher
Posts: 1
Joined: Tue Sep 19, 2023 11:41 am

by midpackfinisher

If you're looking to buy a sigeyi hanger I'd possibly reconsider and if you own one just make sure you check it regularly. I had one snap after about 15,000km of use. Was about 60km into a training ride (no shifting issues) and had it snap while sprinting on a flat, smooth section of road, causing the chain to jump and me to crash (trip to emergency). It doesn't appear to have failed due to the chain twisting or road debris. It has possibly failed due to manufacturer fault that took time to propogate as it as snapped along a thin section. This was one specific to the Ridley Fenix SL. I contacted Sigeyi twice and they opted to not respond.
Attachments
1000028980.jpg
1000028982.jpg

matcav
Posts: 107
Joined: Thu May 28, 2020 3:52 pm

by matcav

trex wrote:
Thu Aug 17, 2023 4:22 pm
Did anyone notice that the hanger wipes off the paint/anode on the derailleur?
I recently noticed a bit of play between the hanger and the derailleur exactly in that point. It seems something reported also by others - ie Rhino's hangers if I remember well. I was considering to insert a washer, but shifting is actually flawless.

Can it be related to your issue?

by Weenie


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