7 set availlables
For those who dont want to bother with welding them or using screw on their dropout, you can use this epoxy:
DP-420 ( ideally the black).. not the off white wich is a bit less strong
The black( grey) color DP420 epoxy is capable of 4500psi overlap shear force
considering that you will be able to apply at least 2 square inch of that glue, that's 9000psi overlap shear force on your dropout...
At that force, what will break is your axel by twisting.. not the torque arms!! http://www.shop3m.com/62328014352.html
( you might need an applicator or the piston to push on both tubes.. but instead i recommand to diy a U shape rod that will push on both pistons of the tube at a time.. that will save you money!.. just ensure to push equally on both to get the proper mix ratio
EVERY metal parts of all my 4 ebikes that i needed to attach together and where screw was not the best or easy solution, i used that DP420
and i am still really impress on hot it is so strong!!!
Perfect cure time is 7 days... at ambiant.. but after 24 hour 90% of the strengh is acheived
and at 100 celsius temp of curing, you just need 30 minutes
and to let the part to col down to abmiant and leave it oe hour alone to stabilize.
You can sand both part to abeliorate the surface roughness and actice surface of both parts..
ENSURE THAT BOTH PART TO GLUE TOGETHER ARE PERFECTLY CLEAN!!!.. no grease, ... you can use isopropylic or normal alcohol or aceton
ONE LAST THING.. IF you glue them with the DP-420 NEVER EXPECT TO BE ABLE TO REMOVE THEM AFTER YOU WILL HAVE ATTACHED THEM TO YOUR FRAME !!
... or... accept to put your frame in an oven at 200 celsius or above to soften the epoxy... and fragilize the heat treatment it had.