Product Advice

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Product Advice

Author	Message
Sy	Sy posted 12 Years Ago HOT Topic Details
Group: Forum Members Posts: 1, Visits: 4	I have a customers carbon bike frame which has an issue where the headset, which has an interference fit aluminium cup that presses into the frame, has become loose due to the carbon frame having worn giving about 1 mm of movement in the cup. I plan to replace the cup with a type that has a removable bearing from the cup, thus allowing me to bond the cup into the frame to eleviate the movement in the headset. So finally the question! What I need to know is what product you would recommend to bond an aluminium cup into a carbon fibre frame that would take the knocks that a mountain bike will endure and fill the small voids that now exist between frame and cup? Many thanks for your help. Simon.
	Reply Like 3
Leew	Leew posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 33, Visits: 187	I would personally use Araldite 420 for that. http://www.silmid.com/products/araldite-420-a-b-1-4kg-kit-asna-4125-bms-5-107-b.aspx I have used this many times for bonding steel and alu to CFRP, including the swingarm pivot mountings of one of my carbon bikes which has now held up to about 10,000 miles of riding and it's still stuck fast.
	Reply Like 2
wojtepanik	wojtepanik posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 102, Visits: 582	Hi! Maybe it is not the way it should be done, but I would do it this way : mix some epoxy resin or glue with graphite or micro-sphere and put chopped cf strands and mix well, after cleaning the surface wedge the mixture between, you may sand all the surface with some heavy grid to have nice bonding surface. Thats my way to do it, I'm not professional but it worked in all my repairs. The strands have to be chopped to really small pieces. Bye Wojtek from Poland ~~~Everytime I hear sound of demoulding part I have eargasm~~~
	Reply Like 3