Bottom bracket Shell
Will be wrapped in pre-preg UD CF. Want to make sure the bond between the titanium and CF is stronger than the just the pre-preg resin. So which epoxy to use?
Tube joining
Tubes will be mitred and then fit flush to each other. Once they have been glued I will then be wrapped further pre-preg UD CF around the joints, so the epoxy needs to be generally strong with a little flex, however will not be the only structural element taking force and load.
I was looking at the ET515 Epoxy Adhesive, but I am not sure if this is the most suitable?
http://www.easycomposites.co.uk/products/structural-adhesives/semi-flexible-15min-epoxy-adhesive.aspx
If not what would you suggest?
Joint filleting
Prior to wrapping the joints in further UD CF I need to fillet the joint so there are no sharp acute angles which could create a void after wrapping and curing.
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What filler \ epoxy combination would you suggest, as this isn’t structural the lighter the better.Someone on the forum suggested using a mix of carbon powder, glass bubbles and epoxy.
Which epoxy would be suitable and what ratios of each would you advise?
Look forward to your responses.
Cheers,
Andy