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Clamping carbon frame in bike carrier?

JGTRJGTR Posts: 1,404
edited January 2018 in MTB general
Hi all, I'm after a new bike carrier and was looking at Thule towbar mounted one which has the arms that clamp into the frame but have been told that I can't clamp my carbon frame?

Is this right? If so what other options are there? Don't want a roof carrier.

Thanks

Posts

  • oxomanoxoman Posts: 10,465
    I'm in a similar position to your having changed car and not had a towbar fitted this time. I was looking at the saris grab condo.
    http://www.chainreactioncycles.com/sari ... d|503035UK
    I'm also looking at thule fork mounted rack to go on my roofbars as not happy clamping my carbon bike.
    Too many bikes according to Mrs O.
  • fat daddyfat daddy Posts: 2,605
    you dont need a vice like grip to clamp a frame ...... when you pick the bike up with your hands, you can hold it firmly enough not to drop it without crushing the top tube

    Same goes with putting it on a rack.

    The wheels are strapped to the deck of the carrier so the bike isnt going to go anywhere .... then just lightly do the clamp up on to the tube .. I use a strip of insulation foam around the tube, mostly to protect it from scratching, but also works by providing a decent grip to teh frame without coming anywhere near crushing it.

    Just be sensible
  • JGTRJGTR Posts: 1,404
    oxoman wrote:
    I'm in a similar position to your having changed car and not had a towbar fitted this time. I was looking at the saris grab condo.
    http://www.chainreactioncycles.com/sari ... d|503035UK
    I'm also looking at thule fork mounted rack to go on my roofbars as not happy clamping my carbon bike.

    I have a tow bar fitted and want a carrier that fits onto the towbar but all the ones I've found require clamping the top tube which I've been told shouldn't be done with carbon?
  • JGTRJGTR Posts: 1,404
    fat daddy wrote:
    you dont need a vice like grip to clamp a frame ...... when you pick the bike up with your hands, you can hold it firmly enough not to drop it without crushing the top tube

    Same goes with putting it on a rack.

    The wheels are strapped to the deck of the carrier so the bike isnt going to go anywhere .... then just lightly do the clamp up on to the tube .. I use a strip of insulation foam around the tube, mostly to protect it from scratching, but also works by providing a decent grip to teh frame without coming anywhere near crushing it.

    Just be sensible

    That's what I'm thinking
  • fat daddyfat daddy Posts: 2,605
    thule do a carbon frame protector ..... which is effectively the same thing as the foam tubing ... it wraps around the top tube and helps distribute the clamping force

    https://www.thule.com/en-gb/gb/bike-rac ... r-_-984000
  • JGTRJGTR Posts: 1,404
    fat daddy wrote:
    thule do a carbon frame protector ..... which is effectively the same thing as the foam tubing ... it wraps around the top tube and helps distribute the clamping force

    https://www.thule.com/en-gb/gb/bike-rac ... r-_-984000

    Cheers, that settles it then :D
  • Could go for a front tyre grip type carrier as commonplace in USA.
    Bike-Rack-3.jpg
    Available from Auxtail.com
  • JGTRJGTR Posts: 1,404
    Could go for a front tyre grip type carrier as commonplace in USA.
    Bike-Rack-3.jpg
    Available from Auxtail.com

    Looked at these, had mixed reviews. Security seemed to be a potential issue i.e. bikes becoming detached from carrier
  • figbatfigbat Posts: 680
    I frequently clamp my carbon MTB and road bike on my Thule roof carrier... not dead yet. As above, it’s not a vice, it’s just to hold it upright. I just clean the frame before mounting it to prevent any scratching or marking from grit or dirt.
    Cube Reaction GTC Pro 29 for the lumpy stuff
    Cannondale Synapse alloy with 'guards for the winter roads
    Fuji Altamira 2.7 for the summer roads
    Trek 830 Mountain Track frame turned into a gravel bike - for anywhere & everywhere
  • Craig_BroadbentCraig_Broadbent Posts: 30
    edited November 2017
    With the Thule clamps they are not fully wraparound jaws.
    thule-raceway-clamp.jpg
    If you do not close the mouth to be smaller than the frame, then there is a chance it will slip out and rotate around. So adding material and lightly fastening could be an expensive mistake. The wheel straps might hold the bike for a bit as it drags along the road. :?

    I would be interested in understanding the issues found with tyre grip type
  • JGTRJGTR Posts: 1,404
    With the Thule clamps they are not fully wraparound jaws.
    thule-frame-clamp-arm-1-for-euroclassic-pro-903-2003602748002-6-l.jpg
    If you do not close the mouth to be smaller than the frame, then there is a chance it will slip out and rotate around. So adding material and lightly fastening could be an expensive mistake. The wheel straps might hold the bike for a bit as it drags along the road. :?

    I would be interested in understanding the issues found with tyre grip type

    I did find that which is why I've ordered a Fiamma clamp for my Thule carrier.
  • DJFishDJFish Posts: 49
    I clamp mine on the seatpost or sus forks....
  • Just a word of warning, as someone mentioned above- I've been clamping my carbon frame in a Thule roof mounted carrier and wrapping an old chain stay protector around it to give it a bit of padding, travelling down the motorway yesterday I hit a bump in the road and it must have slipped out of the clamp as suddenly the bike was hanging down off the roof alongside my car- luckily the wheel straps held. I'm thinking I'll try a length of old inner tube round there next time give it a bit of grip between the clamp and the frame as I'm reluctant to use the clamp with nothing else as it stripped all the paint off the underside of my old bike and even cleaning the frame before clamping it doesn't seem to stop that
  • oxomanoxoman Posts: 10,465
    Just an update, i picked up a new style thule 598 off ebay used only once, this has the hooked type clamp so would stop the bike bouncing out. Have ordered a 984 protector so we will see how things go, should be able to do my mtb and road bikes no problem. Just got to pick another 2 up cheap hopefully. Marcus Iv'e always used a strap around all my racks just as a back up to stop that happening so may be worth considering.
    Too many bikes according to Mrs O.
  • JGTRJGTR Posts: 1,404
    I’m using a Thule towbar mounted carrier with Fiamma arms and frame straps, the straps go right round the frame so it can’t slip out. I use pipe lagging around frame....I can also clamp it around the rear shock instead of the frame.

    I used the Thule clamp on my aluminium frame but had to wrap a bungee strap round it as it looked like the frame could slip out of the jaws.
  • oxomanoxoman Posts: 10,465
    JGTR, suspect that's why they've altered the design.
    Too many bikes according to Mrs O.
  • JGTRJGTR Posts: 1,404
    oxoman wrote:
    JGTR, suspect that's why they've altered the design.
    Not on rear cycle racks, same type of clamp as before
  • 02gf7402gf74 Posts: 1,166
    fat daddy wrote:
    you dont need a vice like grip to clamp a frame ...... when you pick the bike up with your hands, you can hold it firmly enough not to drop it without crushing the top tube

    Same goes with putting it on a rack.

    Yes but when you're holding the frame are you running at 80 per hour over potholes and are the clamps as soft as your hands ? I'm sure the forces exerted on a frame in a car rack exceed those when it is held by you.

    I have a couple of lightweight carbon frames whose downturns flexes with not much finger pressure.

    Personally I would not clamp carbon frames.
  • http://www.altaracks.com
    We humbly would like to suggest a different way of carrying your bikes. This system protects your bikes from rubbing, from the rack and other bikes. Made in the USA, carries up to six bikes of any kind. designed for off road and rough road driving. We dont void your warranty for driving on dirt.
    https://instagram.com/p/BdQsOskhln4/
  • JGTRJGTR Posts: 1,404
    ALTA RACKS wrote:
    http://www.altaracks.com
    We humbly would like to suggest a different way of carrying your bikes. This system protects your bikes from rubbing, from the rack and other bikes. Made in the USA, carries up to six bikes of any kind. designed for off road and rough road driving. We dont void your warranty for driving on dirt.
    https://instagram.com/p/BdQsOskhln4/

    Not sure my Renault Megane would actually move once I’ve bolted 2 tonne of military grade steel to it and hung 6 bikes from it. A bit overkill for what I was after.
  • JBAJBA Posts: 2,820
    They don't ship to the UK anyway.
    “Life has been unfaithful
    And it all promised so so much”

    Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Toughtroad SLR 1 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
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