The Ford Barn

Big hammer · 01-23-2023, 07:19 PM

Quote:

Originally Posted by Bmoody

Thanks everybody!!!!
A fellow from a model a club is coming to help and is bringing a spring spreader Saturday.

Woo hoo !!! Hot coffee and donuts for snacks, and a warm lunch !

cas3 · 01-25-2023, 08:55 PM

I just wrap a log chain around the spring several wraps and cut the bolt with a torch while its laying on the floor. No big explosion, works great

Bud · 01-26-2023, 12:57 PM

As stated above, not all all-thread rod is the same. One needs an alloy, heat-treated, all-thread. ASTM A193 Grade B7 threaded rod is Medium Strength with a yield strength of 105000 psi. I am not sure if that would be up to the task. SAE J429 Grade 8 is 130000psi yield strength (120000psi proof strength). Avoid plated all-thread, it may be subject to hydrogen embrittlement. I don't think a hardware store is going to have high strength all-thread rod. Twice in my career I have seen a high strength alloy pull rod break. Luckily no one was hurt. But a nut launched after a break has the ability to kill someone. So be careful!!

01-25-2023, 08:55 PM	#22
cas3 Senior Member Join Date: Jan 2011 Location: sw minnesota Posts: 4,574	Re: Model A rear end removal I just wrap a log chain around the spring several wraps and cut the bolt with a torch while its laying on the floor. No big explosion, works great

01-26-2023, 12:57 PM	#23
Bud Senior Member Join Date: May 2010 Location: Ohio Posts: 819	Re: Model A rear end removal As stated above, not all all-thread rod is the same. One needs an alloy, heat-treated, all-thread. ASTM A193 Grade B7 threaded rod is Medium Strength with a yield strength of 105000 psi. I am not sure if that would be up to the task. SAE J429 Grade 8 is 130000psi yield strength (120000psi proof strength). Avoid plated all-thread, it may be subject to hydrogen embrittlement. I don't think a hardware store is going to have high strength all-thread rod. Twice in my career I have seen a high strength alloy pull rod break. Luckily no one was hurt. But a nut launched after a break has the ability to kill someone. So be careful!!