YQK crimping tool
In another thread we were discussing crimping and I was to tell y'all about the YQK-120 12 ton crimping tool I bought off of ebay. First thing is they sent me the YQK 240 16 ton tool. Instead of t...
Forum Discussion
Rotating the Die and recompressing and shifting the stranding within can't be good for the Lug or the copper within.
The Ears are simply because the Dies are too small. If the Dies were the proper size for the Lug, there would be no ears, and all the clamping force would compress the Lug and stranding within properly. If the ears form, then a large percentage of clamping force is no longer compressing the lug into the wire, but the lug into itself.
An Eared crimp is Not acceptable, to me. I am not going to pay 1200$ for an industrial quality crimper, but If I am just going to accept an Eared crimp, I might as well just crush the Lug in a vice and put two layers of thick walled heat shrink tubing to hide the thing.
Grinding out the Dies on The HF crimper has given me good results on 2awg lugs
The 0awg lugs as they are marked work well on 4awg lugs. Anything over 4awg and the HF crimper is going to leave Eared crimps.
How bad is an Eared crimp? I don't know. It could be electrically and mechanically acceptable, or it might not.
I'll shoot for something that would pass an ABYC inspection, and I'll modify the Dies as needed to get close as I can to that>
Here is my latest 2awg ring terminal compressed with my hand ground/filed dies:
http://www.pbase.com/mainecruising/battery_cables
The Ears are simply because the Dies are too small. If the Dies were the proper size for the Lug, there would be no ears, and all the clamping force would compress the Lug and stranding within properly. If the ears form, then a large percentage of clamping force is no longer compressing the lug into the wire, but the lug into itself.
An Eared crimp is Not acceptable, to me. I am not going to pay 1200$ for an industrial quality crimper, but If I am just going to accept an Eared crimp, I might as well just crush the Lug in a vice and put two layers of thick walled heat shrink tubing to hide the thing.
Grinding out the Dies on The HF crimper has given me good results on 2awg lugs
The 0awg lugs as they are marked work well on 4awg lugs. Anything over 4awg and the HF crimper is going to leave Eared crimps.
How bad is an Eared crimp? I don't know. It could be electrically and mechanically acceptable, or it might not.
I'll shoot for something that would pass an ABYC inspection, and I'll modify the Dies as needed to get close as I can to that>
Here is my latest 2awg ring terminal compressed with my hand ground/filed dies:
http://www.pbase.com/mainecruising/battery_cables
