Power hammer video, Kinyon
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Power hammer video, Kinyon Todd Rich 07-06-2008
Posted by Chilla on July 8, 2008, 9:22 pm
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bigegg wrote:
>
>> Chilla wrote:
>>
>>> You can never have too much information... information is my crack ;-)
>>>
>
> I've seen a picture of a flypress converted to be operated by leg power.
>
> Might be worth investigating.
>
> I've been using a (smallish) hand powered type for a couple of years -
> contollable enough that I can usually do a full forging without a hand
> hammer (I tend to make door and gate hardware, so some big hinges, as
> well as door knockers and latches).
>
> I did have a go at making some laminated steel with it (cable damascus,
> I believe it's called?), but it didn't turn out so well.
>
> I believe Ron Reill's site has a page on using a flypress as a power
> hammer.

My forge is in the non-powered shed, so manual systems are the go ;-)

Regards Charles
P.S. I have looked at power hammers and rolling mills, but would like
to keep things really simple.


Posted by bigegg on July 9, 2008, 2:27 am
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Chilla wrote:
>
>
> bigegg wrote:

>> I believe Ron Reill's site has a page on using a flypress as a power
>> hammer.
>
> My forge is in the non-powered shed, so manual systems are the go ;-)

> P.S. I have looked at power hammers and rolling mills, but would like
> to keep things really simple.
>

confused :.(

the flypress I'm talking about is unpowered - swing a big handle with a
weight which is converted to vertical motion through a screw - not the
powered type with a couple of big flywheels driven by a motor.

hits with perhaps 1/4 a tonne, rather than 10!


--
BigEgg
Hack to size. Hammer to fit. Weld to join. Grind to shape. Paint to cover.
http://www.workshop-projects.com -
Plans and free books - *Now with forum*

Posted by Chilla on July 9, 2008, 3:00 am
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bigegg wrote:
> confused :.(

Yes I was, the internet does that to me ;-)

> the flypress I'm talking about is unpowered - swing a big handle with a
> weight which is converted to vertical motion through a screw - not the
> powered type with a couple of big flywheels driven by a motor.
>
> hits with perhaps 1/4 a tonne, rather than 10!

Well I figure I weigh in between 106-111 kg fluctuating week to week
(don't ask my body is pretty screwed up).

so if I can use a 6 lb sledge, and put a large portion of my weight
behind it I should be able to deliver a sizable whack :-)


Regards Charles


Posted by bigegg on July 9, 2008, 10:22 am
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Chilla wrote:

>> hits with perhaps 1/4 a tonne, rather than 10!
>
> Well I figure I weigh in between 106-111 kg fluctuating week to week
> (don't ask my body is pretty screwed up).
>
> so if I can use a 6 lb sledge, and put a large portion of my weight
> behind it I should be able to deliver a sizable whack :-)

working alone @ 1 hit per second for a full heat?

my flypress only cost me £35 (about 70 U$) -
it's a bit of a no-brainer for me for the sort of work I do -
I simply couldn't do a lot of it without help if I used a sledge, plus
it was a lot cheaper than a kick hammer would have been, a lot quieter
than a power hammer, and it is (just about) light enough to transport to
site on a small trailer - weights about 3 or 4 cwt (350lbs?)


--
BigEgg
Hack to size. Hammer to fit. Weld to join. Grind to shape. Paint to cover.
http://www.workshop-projects.com -
Plans and free books - *Now with forum*

Posted by spaco on July 9, 2008, 1:24 pm
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If you are thinking of using a sledge hammer in a "treadle hammer"
design, note that most of them have a MUCH heavier hammer head.
You know that the speed of the hammer has a lot to do with the power
of the blow; it's a squared function, I think. (Energy = weight X speed
squared, or something like that). ----I always get confused about the
difference between weight and mass---
You can get a hand-swung sledge hammer going a LOT faster than the
treadle system will drive its hammer, so you need a LOT more weight to
make up for the difference. On the Gade-Marx and Clay Spencer designs,
the hammer head weighs about 65 pounds. That's a good weight in my opinion.

Pete Stanaitis
----------------------------------------

Chilla wrote:
>
>

> so if I can use a 6 lb sledge, and put a large portion of my weight
> behind it I should be able to deliver a sizable whack :-)
>
>
> Regards Charles
>

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