Hitch Rack Disaster
#1
Thread Starter
Newbie
Joined: Aug 2016
Posts: 3
Likes: 0
Hitch Rack Disaster
Anyone ever seen this happen?
Snapped off at the hitch (see attached pics)
- Thule Apex 5 Model 9026 Hitch Rack (https://www.thule.com/en-us/us/bike-...9026-_-1259651)
- Purchased new in 2012
- Barely used more than once a year for family vacation
- 2" receiver
- Loaded with 5 bikes (4 Trek Mountain bikes & 1 Road bike)
- All bikes properly mounted/strapped in cradles
- Heavier bikes toward the hitch and road bike on last
Snapped off at the hitch (see attached pics)
#4
Senior Member
Joined: Apr 2015
Posts: 8,206
Likes: 86
From: Metro Detroit/AA
Bikes: 2016 Novara Mazama
It doesn't have 2" square stock coming all the way out??? I'm not really sure what I am looking at, but if that narrow bit was all that supported it, I'd never have put five full size bikes on there.
#5
Senior Member
Joined: Aug 2015
Posts: 253
Likes: 29
From: Calgary, AB, Canada
Bikes: Giant Defy Pro 0, Cervelo Aspero
There is something seriously wrong for the rack to fail like that. I'd be taking that to whoever I bought it from and asking them for some warranty consideration. Much damage to the bikes?
#7
Senior Member


Joined: Jul 2008
Posts: 30,506
Likes: 4,579
From: 25 miles northwest of Boston
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
sorry to hear about this. where / when did it happen? hopefully not while you were driving down the road
in researching hitch racks this spring/summer I found out Curt hitch racks must be used with a single stabilizer strap or their warranty is voided. the purpose of the strap is to minimize the shock when going over bumps.
I see your rack has/had "Road Dampening Technology" so I guess a strap or straps wasn't required?
I used the strap to reduce/eliminate rattle/wiggle in my Swagman rack's elbow. I used 3 straps, left, right & center
in researching hitch racks this spring/summer I found out Curt hitch racks must be used with a single stabilizer strap or their warranty is voided. the purpose of the strap is to minimize the shock when going over bumps.
I see your rack has/had "Road Dampening Technology" so I guess a strap or straps wasn't required?
I used the strap to reduce/eliminate rattle/wiggle in my Swagman rack's elbow. I used 3 straps, left, right & center
#8
Senior Member


Joined: Jul 2008
Posts: 30,506
Likes: 4,579
From: 25 miles northwest of Boston
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
you might try posting this in some car/suv forums and see what you can find. I know in the 2 car forums I use, there are a ton of hitch rack threads
#9
Senior Member
Joined: May 2013
Posts: 4,400
Likes: 106
From: SF Bay Area
Bikes: Bianchi Infinito (Celeste, of course)
#10
Senior Member
Joined: Apr 2015
Posts: 8,206
Likes: 86
From: Metro Detroit/AA
Bikes: 2016 Novara Mazama
The 150# tolerance should have included a decent margin, so someone that loaded it at 151# would not risk such destruction.
#11
Senior Member


Joined: Jul 2008
Posts: 30,506
Likes: 4,579
From: 25 miles northwest of Boston
Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0
there's more to it than just load rating. I read the instructions, it says not to use it off road or on dirt rds, etc. the OP hasn't said what the conditions were, like speed he was travelling at, if he hit a bump of some kind, etc. some bridge junctions can be quite jolting at speed
#12
Generally bewildered

Joined: Aug 2015
Posts: 3,038
Likes: 344
From: Eastern PA, USA
Bikes: 2014 Trek Domane 6.9, 1999 LeMond Zurich, 1978 Schwinn Superior
Still... As an engineer I'd say that the design is manifestly faulty - the drilled and tapped holes in the solid shaft are WAY too big - too much stress concentration and too much removed metal to weaken the joint. Meh. Bad job, Thule.
#13
Senior Member
Joined: May 2013
Posts: 4,400
Likes: 106
From: SF Bay Area
Bikes: Bianchi Infinito (Celeste, of course)
Yeah, I'm definitely surprised that the 5 bike rack uses a 1.25in support bar rather than a 2" support. It's especially confusing since Thule says the 5 bike rack requires a 2in hitch, but then uses an adapter. Just a very poor design.
#14
Senior Member
Joined: Jun 2014
Posts: 1,140
Likes: 9
From: Stamford, CT; Pownal, VT
Bikes: 2015 Trek Domane 6 disk, 2016 Scott Big Jon Fat Bike
That looks like it's a 2" hitch with a 1.5" rack tongue, but it's hard to tell from the pix. My Thule Apex tongue fills the 2" hitch hole almost completely. If it was indeed the 1.5" model of rack, that's what happened. (You *could* conceivably expand the anti-rattle spacer out far enough to fill a 2" hitch...but then it will certainly fail...Which is what looks like happened here.)
EDIT: No, I see that model only fits 2" hitches. I have no idea what could have caused the aluminum to break like this.
EDIT: No, I see that model only fits 2" hitches. I have no idea what could have caused the aluminum to break like this.
#15
Senior Member
Joined: Jul 2016
Posts: 272
Likes: 17
From: DFW
Bikes: '90 Schwinn Traveler(retired), '61 Bottecchia, '86 RS Maxima, '17 Jamis Renegade Exile, '92 Trek 920
Agree it looks like a bad design with that big hole at a stress point, but will add it looks to have started a while ago. Looks to be rust on half the break from the rusty part that was in that hole getting wet and washing into the crack.
#16
Senior Member
Joined: Jun 2013
Posts: 4,094
Likes: 2
From: Bozeman
Bikes: 199? Landshark Roadshark, 198? Mondonico Diamond, 1987 Panasonic DX-5000, 1987 Bianchi Limited, Univega... Chrome..., 1989 Schwinn Woodlands, Motobecane USA Record, Raleigh Tokul 2
I'm thinking it's more of a 2" bike rack inside a 2.5" receiver. A big family with a ton of camping stuff? Probably a huge camper with an equally large hitch receiver.
I never knew 2.5" receivers existed until I saw one in person the other day.
I'm pretty sure the 5 bike bike racks don't come with 1.25"... uh... bars?
EDIT: Or maybe it does? Pictures online show a small looking/finicky looking mount... I wouldn't use it for 5 bikes personally.
I never knew 2.5" receivers existed until I saw one in person the other day.
I'm pretty sure the 5 bike bike racks don't come with 1.25"... uh... bars?
EDIT: Or maybe it does? Pictures online show a small looking/finicky looking mount... I wouldn't use it for 5 bikes personally.
#18
Banned.
Joined: Aug 2016
Posts: 14
Likes: 0
Based upon the picture provided the OP neither read the directions nor used the required 2" adapter.
100% pilot error.

https://cdn2.static-tgdp.com/assetlo...arket=US&att=1
100% pilot error.
https://cdn2.static-tgdp.com/assetlo...arket=US&att=1
#19
Senior Member
Joined: Apr 2013
Posts: 1,662
Likes: 46
From: Amsterdam
Bikes: 1980 Koga-Miyata Gentsluxe-S, 1998 Eddy Merckx Corsa 01, 1983 Tommasini Racing, 2012 Gulf Western CAAD10, 1980 Univega Gran Premio
Based upon the picture provided the OP neither read the directions nor used the required 2" adapter.
100% pilot error.

https://cdn2.static-tgdp.com/assetlo...arket=US&att=1
100% pilot error.
https://cdn2.static-tgdp.com/assetlo...arket=US&att=1
Save
#20
Senior Member
Joined: Apr 2015
Posts: 8,206
Likes: 86
From: Metro Detroit/AA
Bikes: 2016 Novara Mazama
Not that I would have ever paid attention before having read this thread, but I saw one of these going down the highway with five full size bikes loaded on it today. All I could think about watching it bounce around (quite excessively, from my untrained eye) was the OPs snapped shaft
#22
Banned.
Joined: Aug 2016
Posts: 14
Likes: 0
The stinger sheared at the furthest rear bolt hole where the M8 x 30 screws should have been attached.
Pilot error. No adapter. Look at the diagram, 2c. No way it could have sheared there if it was installed properly.
#23
Senior Member
Joined: May 2013
Posts: 186
Likes: 0
From: Westminster, CO
Bikes: 2016 Hong Fu Gravel Bike, 2015 Motobecane Turino Team
It sheared through the diagonal hole for the "locking knob" shown in F. The M8 x 30 bolt is seen in 2A going in at a 90 degree angle, not a 45.
Last edited by RFEngineer; 08-09-16 at 07:37 PM.
#24
Senior Member


Joined: Apr 2009
Posts: 39,897
Likes: 3,865
From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
We can "analyze" the cause of the failure based on a picture and not knowing many other details until the cows come home.
BUT
The OP should be less concerned with the engineering and how or why it filed, and more concerned with what now. For that the process starts with dialog with Thule, who, for all anybody knows may be willing to make him whole.
BUT
The OP should be less concerned with the engineering and how or why it filed, and more concerned with what now. For that the process starts with dialog with Thule, who, for all anybody knows may be willing to make him whole.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.







