Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-16-12, 04:13 PM   #1
tly
Senior Member
Thread Starter
 
Join Date: Apr 2006
Location: NW Missouri
Bikes: Cannondale T700 Specialized Hardrock Comp Disc
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ATOC top carrier shaking....scary!

I have a ATOC carrier in top of my Subaru Outback that I use to carry my tandem. The carrier is attached to the factory crossbars. In certain wind conditions, like when getting near semis the bike shimmys. I feel that there is plenty of strength in the setup but still can't relax and can't keep from looking through the moonroof to check on what's happening which isn't very safe either. Also this is the type of rack where you remove the front wheel.

Has anyone else experienced this? Is there a fix or should I just close the moonroof and not worry about it? ( hard to do)

Tom
tly is offline   Reply With Quote
Old 06-16-12, 08:56 PM   #2
Tom Spohn
Senior Member
 
Join Date: Aug 2011
Location: Seattle
Bikes: Spec. Roubaix, Cannondale RT2, BF NWT, BF tandem
Posts: 201
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The ATOC is a pretty solid piece of kit so I would look at the stock mounts and crossbars. When we bought our ATOC both Yakima and Thule recommended changing to their racks. I wiggled the factory rack on our Ford Escape and felt is was solid enough, but it does move around more than the Yakima or Thule racks. The dealer had both brands mounted on employee's cars and I shook them all. Also most factory racks have a slight curve that matches the roofline of the vehicle. This means that the bike leans out a little bit when mounted rather than riding straight up. Front wheel removal racks are best for aluminum or carbon tandems. Our Cannondale tandem owners manual specifically mentions to not clasp the tubes when mounting it on the car.

Maybe you can get a passenger to carefully watch the bike while driving to see what is going on.
Tom Spohn is offline   Reply With Quote
Old 06-16-12, 09:50 PM   #3
rdtompki
Senior Member
 
rdtompki's Avatar
 
Join Date: Nov 2008
Location: Hollister, CA
Bikes: Volagi, daVinci Joint Venture
Posts: 3,962
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think you can buy a diagonal brace. You might give ATOC a call. I use the factor rails on my Jetta wagon, but Thule cross bars, and have never had a problem.
rdtompki is offline   Reply With Quote
Old 06-17-12, 10:15 PM   #4
CaptainHaddock
Senior Member
 
CaptainHaddock's Avatar
 
Join Date: Feb 2012
Location: PDX!
Bikes: Custom Single, factory fixed, Cannondale RT2
Posts: 252
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by tly View Post
I have a ATOC carrier in top of my Subaru Outback that I use to carry my tandem. The carrier is attached to the factory crossbars. In certain wind conditions, like when getting near semis the bike shimmys. I feel that there is plenty of strength in the setup but still can't relax and can't keep from looking through the moonroof to check on what's happening which isn't very safe either. Also this is the type of rack where you remove the front wheel.
Has anyone else experienced this? Is there a fix or should I just close the moonroof and not worry about it? ( hard to do)
Tom
I have to ask, are you sure it's the bike, or might it be that it's the car that's doing the movement? I have the RockyMounts rack, and while the tandem will shake some, the majority of the movement I feel is the car & tandem being shaken by the turbulence coming off the bigrig.
CaptainHaddock is offline   Reply With Quote
Old 06-18-12, 05:10 AM   #5
WheelsNT
Senior Member
 
Join Date: Nov 2011
Bikes:
Posts: 128
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I agree you might want to use Thule or Yakima crossbars. We have a Yakima Sidewinder on Yakima crossbars on the factory rails on our minivan, and I can shake the whole car by grabbing the Sidewinder.
WheelsNT is offline   Reply With Quote
Old 06-18-12, 05:32 AM   #6
tly
Senior Member
Thread Starter
 
Join Date: Apr 2006
Location: NW Missouri
Bikes: Cannondale T700 Specialized Hardrock Comp Disc
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Sounds like aftermarket crossbars might be the answer. Next question, how do I incorporate new crossbars onto my factory Subaru rack? I've looked at both Yakima and Thule's web sites ant this is far from clear. Will I have to drill holes? Sorry to be thick headed!
tly is offline   Reply With Quote
Old 06-18-12, 07:12 AM   #7
merlinextraligh
pan y agua
 
merlinextraligh's Avatar
 
Join Date: Aug 2005
Location: Jacksonville
Bikes: Wilier Zero 7; Merlin Extralight; Co-Motion Robusta; Schwinn Paramount; Motobecane Phantom Cross; Cervelo P2; Motebecane Ti Fly 29er; Calfee Dragonfly Tandem
Posts: 29,150
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 28 Post(s)
I'd talk to Yakima, or Thule about your specific make, model and year
.
__________________
You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
merlinextraligh is offline   Reply With Quote
Old 06-18-12, 06:05 PM   #8
dvs cycles
Senior Member
 
Join Date: Oct 2007
Location: SoCal
Bikes:
Posts: 1,164
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You need something like this.
http://www.thule.com/en-US/US/Produc...ling-Foot-Pack
I used this setup with my Rav4 and ATOC until I got a truck and shell.
dvs cycles is offline   Reply With Quote
Old 06-18-12, 06:24 PM   #9
rdtompki
Senior Member
 
rdtompki's Avatar
 
Join Date: Nov 2008
Location: Hollister, CA
Bikes: Volagi, daVinci Joint Venture
Posts: 3,962
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dvs cycles View Post
You need something like this.
http://www.thule.com/en-US/US/Produc...ling-Foot-Pack
I used this setup with my Rav4 and ATOC until I got a truck and shell.
+1. I've been using those mounts on my Jetta wagon for almost four years without a problem
rdtompki is offline   Reply With Quote
Old 06-18-12, 07:01 PM   #10
gracehowler
Rod & Judy
 
gracehowler's Avatar
 
Join Date: Jun 2009
Location: Montrose, CO
Bikes: Specialized S-works e-5, Davinci joint venture, Specialized Vienna Commuter
Posts: 486
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
We used an atoc on a VW Eurovan, the roof pops up, so it allows movement in the racks which multiplies to the bike, I think Rick's idea of a brace is the best.
R
gracehowler is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:09 AM.