Dirtcrasher
08-10-2009, 05:18 PM
I finally got in my metal stock this week and got some work done. This 3" stretch really makes the 70 much more comfortable for us big guys and the way I've done it, I added a good amount of strength.
I stretched it out 3"s and used a 12" tube, so ultimately you have 4.5"s forced in to either end. I think it's important that your tube reaches the stck gusset for the best strength.
I asked questions about tubing sizes before I did this and then came up with my own solutions. IMHO, 1.750 is far too small for a good fit. Apparently the early year ATC70's did run smaller tubing. The inside ID of the stock 85 ATC70 frame is nearly. So, I got some tubing that with a bit of machining, I have to bang it in with a 2lb hammer which was just what I wanted :D. I mig weld all that up and then put another piece of tubing over the splice and mig weld that in place too.
Were still in the rough stages, I ran out of Argon but when it's done and powdercoated, my goal is to have a stock appearing and seamless super strong stretch :w00t:
I still have an upper frame support to fabricate and weld in place and I have to machine and move back the gas tank posts. But other than that and some smoothing, we'll be good :naughty:
These frames aren't allot that expensive to ship and again I'll throw it out there and offer this service to others if they want it done........
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0226.jpg
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0228.jpg
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0236.jpg
At some point, I want to make my own suspended frame. I also think I can fairly easily remove the existing top tube and weld in a complete length of 3MM wall tubing instead of the stock 2MM wall tubing.
Work in progress :TrikesOwn
I stretched it out 3"s and used a 12" tube, so ultimately you have 4.5"s forced in to either end. I think it's important that your tube reaches the stck gusset for the best strength.
I asked questions about tubing sizes before I did this and then came up with my own solutions. IMHO, 1.750 is far too small for a good fit. Apparently the early year ATC70's did run smaller tubing. The inside ID of the stock 85 ATC70 frame is nearly. So, I got some tubing that with a bit of machining, I have to bang it in with a 2lb hammer which was just what I wanted :D. I mig weld all that up and then put another piece of tubing over the splice and mig weld that in place too.
Were still in the rough stages, I ran out of Argon but when it's done and powdercoated, my goal is to have a stock appearing and seamless super strong stretch :w00t:
I still have an upper frame support to fabricate and weld in place and I have to machine and move back the gas tank posts. But other than that and some smoothing, we'll be good :naughty:
These frames aren't allot that expensive to ship and again I'll throw it out there and offer this service to others if they want it done........
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0226.jpg
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0228.jpg
http://i257.photobucket.com/albums/hh220/Dirtcrasher/100_0236.jpg
At some point, I want to make my own suspended frame. I also think I can fairly easily remove the existing top tube and weld in a complete length of 3MM wall tubing instead of the stock 2MM wall tubing.
Work in progress :TrikesOwn