I'd glue rubber (strip of inner tube) to the inside of the wood; at least that way if you ever need to reconfigure or replace it your frame will be free of araldite that would be a pig to remove.MarkLeeds wrote: ↑Dec 14, 2017 1:20 pmHi Guys,
I hoping to get comments on the above, I have made some brackets to hold a battery enclosure to the downtube of my specialized enduro 2014. Unfortunately for me the down tube is an irregular oval shape. By hook and by crook I've managed to make my bracket quite close and was planning to use either rubber or aradilte (standard) to fill the last bit.
I thought araldite might work best as when fully cured it is very hard. In the event of a crash I thought it would spread the forces most effectively and prevent damage to the frame.
What do you think?
Here a picture of the gap.....
Yeah - I'd go with rubber or even a strip of leather. I used leather (strips from a weight lifting belt that I wouldn't be using) between my double-leg kickstand that the chainstays it is bolted to to protect the frame from being scraped and gouged by the clamp while still providing a firm connection.
spinningmagnets wrote: ↑Dec 15, 2017 8:12 amI took a quick google and it seems like Araldite is similar to JB Weld? I think it is worth trying, and if it cracks, you simply move on to something better. But...if it works, it's a quick and easy way to fix a small problem.
Perhaps mix the Araldite and then sqeeze it into a balloon? Place the balloon inbetween the frame and bracket quickly, and a short time later it has hardened into the odd shaped airspace you need filled. Worth a shot...
I like the fibre glass idea, although i'm going to try the steel first as it's already on its way. Thanks for the hose clap suggestion. I think that might be a great way to bend the steel to right shape. I thought I might even use a couple of layers (0.7mm +0.7mm) to add even more strengthflat tire wrote: ↑Dec 17, 2017 9:07 pmYou need to account for stiffness as well as strength, and you'd probably be better off adding fiberglass to the bike all things considered. Composites. They're awesome. Fiberglass strength / weight will be in the neighborhood of the aluminum especially if you use woven fiber instead of chopped mat.
The downtube sleeve idea could work though you should be aware bending that sheet into a nice cylinder will probably suck unless you have a roller. Are you going to hold it on with hose clamps? Anyway, that will be a lot heavier than fiberglass.
I think that the frame would perhaps dent and then maybe break at a later date once weakened. As far a I'm aware mtb frames gain a lot of their strength from their shape.