leaf spring straightening

[Blackbeard]

Hmm I had a look at Daniel Gentiles plans for the Krusty, it seems like the springs he used were straightened. Maybe the best sollution would be to contact Daniel and ask how he did it? FERRUM D. Gentile: FERRUM D. Gentile

Bb

[iron766]

thanks blackbeard.

[Ted T]

Good Idea Blackbeard
You might want to check out this set of photos (up close) in the mean time. It has a close-up of the spring and the hammer.
Just use this URL like Blackbeard gave us. Then slip down to the photos. The spring looks like there is some bend in it to me. But not much.
FERRUM D. Gentile: Krusty The 100 pound mechanical powerhammer
Be safe!
Old Rusty Ted

[KevinD]

Thanks for the links guys! [thumbs up]

[gerald]

You might also consider the safety implications of using a junk yard spring for your hammer. You don't know (without some hi-tech testing) what the stress history of the spring is and therefore how close this thing is to breaking under the kind of load that you are putting on the spring. This may be the one single part that you would want to spend a few bucks on to get a new, still flat spring from a spring shop. Consider that this spring is at the level that can cause a lot of damage to critical body parts (head, eyes, etc) if it breaks and goes to flopping around at/near the speed of light.

[stevet]

I used truck springs that had a slight bend left in , the curve caused no problem, but it was always at the back of my mind that they could break being used, it wouldnt be to difficult to enclose the whole spring in a cover, it would be worth doing this even if you use new springs.

[ApprenticeMan]

Here is a couple videos of some factory manufactured spring helves.

YouTube - Mats Jonsson forging a tong

YouTube - Blacksmith Mats Jonsson making a candlestick

The look like a 50 pounder and a 100 pounder.

[ApprenticeMan]

Then of course you could also combine two bent style springs to get a straight style?


YouTube - Fotogendriven Lufthammare

[Glenn]

forging a tong
You notice how close that his hand gets to the fuller that was left in the hardie hole? That is scary !!

making a candlestick
I guess power hammers are like any other hammer, you need a couple of them so you don't have to change dies all the time (Grin)

[blubrick]

Originally Posted by Glenn

forging a tong
You notice how close that his hand gets to the fuller that was left in the hardie hole? That is scary !!

Even more scary, did you see him brush the scale off the die with his hands? Sure, he raised the head, but the machine was still running and he put his hand into it!