- Joined
- Mar 21, 2013
- Messages
- 4,063
I used 7075 aluminum for my spider and it works well. 7075 is a very strong and relatively hard aluminum alloy similar to some mild steels. I under bored the spider, heated it and slipped it onto the spindle for a very secure shrink fit.
It helps that I already had the 7075 stock on hand.
I will use 7075 if/when I decide to do a spider for my 1340GT. 7075 is more than strong enough, and a spider isn't carrying that much in the way of centrifugal force if correctly set up anyway.