Author Topic: Coke Forge Build  (Read 131064 times)

Offline RussellT

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Re: Coke Forge Build
« Reply #150 on: May 18, 2015, 06:16:44 AM »
Now you've got me.  I said "quite a lot" because I don't really know. :scratch:

I would have thought the ambient temperature above a forge could easily reach 80 deg C, depending on stuff like radiant heat from the hood or duct, conducted heat from duct, airflow over the forge, speed of extractor fan etc.

I'm sure you've got all that stuff worked out, (you normally have), but I'm not sure you can rely on the motor not getting hotter than 65 deg. 

Russell

Common sense is unfortunately not as common as its name suggests.

Offline vtsteam

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Re: Coke Forge Build
« Reply #151 on: May 18, 2015, 09:04:45 AM »
I ran a similar external motor exhaust extractor on a 125,000 Btu/hr output wood chip fired furnace with 300 F exhaust temps with no problems.

The fan isn't necessarily located close to or directly over the forge, depending on ductwork from the fan to the hood.

Even if situated directly above, the fan is protected from the radiant heat by the hood and with exhaust extraction, the hot air is going up the duct, not being dispersed around the fan motor.

A large amount of cold air is being mixed with the hot in the hood and duct, as well.

General air circulation in the area around the outside of the duct and hood is very good because of the draw. so external surfaces don't get as hot as might be imagined.

Despite the fact that you can get steel and iron to fusion temps in the forge embers, the total heat output of a forge like this is pretty modest, and also intermittent. Running the forge blower underneath continuously is wasteful of fuel. Usually air is turned down and the fire banked unless actively heating something.

I don't think there's going to be a problem.

(I think I see part of the cause of the confusion --  please note that the motor has been moved out of the venturi, and is external to the intake. This is what makes it an exhaust extractor instead of a blower.)
I love it when a Plan B comes together!
Steve
https://www.youtube.com/watch?v=4sDubB0-REg

RobWilson

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Re: Coke Forge Build
« Reply #152 on: May 18, 2015, 11:09:54 AM »
What Steve said Russell  :thumbup:

Thanks for penning that reply Steve   :clap: :clap: :clap: .


 At the moment I am still undecided on the ducting arrangement , Mr Hermetic  (Phil)  put using a venturi type hood design into the mix . which possibly if room allows (I am limited to 8 ft  ish ) maybe a better course of action , the fan then  could run/function normally ,no Wilson mods lol.

I also should point out I have 5 of these fans to play with , and if I was to come across a better motor I would  change it . all that could be done at a latter date . 

Another possibility Andrew  :thumbup: 


Cheers Lads ,Rob 

Offline John Rudd

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Re: Coke Forge Build
« Reply #153 on: May 18, 2015, 11:14:32 AM »
You could always remotely couple the fan and motor using a pulley v belt drive assembly, but then it starts to grow arms and legs...but least ways the motor is out of the 'Red Area' as Dale would say...... :lol:
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Location:  Backworth Newcastle

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Offline RussellT

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Re: Coke Forge Build
« Reply #154 on: May 19, 2015, 03:43:14 AM »
OK.  I'm convinced - by the pile of spare motors at least. :lol:

Russell
Common sense is unfortunately not as common as its name suggests.

RobWilson

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Re: Coke Forge Build
« Reply #155 on: May 24, 2015, 03:56:51 PM »
Well I have decided that I will not be using that there fan ,,,,,,,,,,,,,,,,,its just to domestic ,,,not Wilson enough (over kill ) ,,,,,,so wile I wait for my new motor to arrive ,I thought I would make a heavy duty stand for my #25 Record vice , used up some 60 x 5 hydraulic tube I had lying about .




Rob 

Offline micktoon

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Re: Coke Forge Build
« Reply #156 on: May 24, 2015, 07:02:57 PM »
Hi Rob, looks nice and robust  :thumbup:, just make sure you dont pull it over on top of you as it will take lifting gear to rescue you lol Are you going to use this vice set up next to the forge ?

 Cheers Mick

RobWilson

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Re: Coke Forge Build
« Reply #157 on: May 25, 2015, 02:17:31 AM »
Aye it weights a bit  Mick  :lol:  , I dont know I may rig up this large leg vice .



I mainly just wanted a vice I could drag out side and have good 360 deg access to what ever  :dremel:  ,,,,,,,,,,now what to do with the other ten vices I own  :palm:

Rob

Offline vtsteam

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Re: Coke Forge Build
« Reply #158 on: May 25, 2015, 01:08:36 PM »
Yer just asking fer it this time Rob:

yup, yer a man of many vises!  :) :wack: :wack: :wack:
I love it when a Plan B comes together!
Steve
https://www.youtube.com/watch?v=4sDubB0-REg

Offline awemawson

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Re: Coke Forge Build
« Reply #159 on: May 25, 2015, 02:20:53 PM »
No Steve, he'd a Brit so it's many VICES  :lol:
Andrew Mawson
East Sussex

RobWilson

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Re: Coke Forge Build
« Reply #160 on: May 25, 2015, 03:05:54 PM »
Yer just asking fer it this time Rob:

yup, yer a man of many vises!  :) :wack: :wack: :wack:


 :lol: :lol: :lol:  TWAT !  you got me   :Doh:   ,,,,,,,,,Mined you Steve ,,,,,,,Andrew dose have a point  :lol: :lol: :lol: :lol:

One day  :loco:


Rob

Offline krv3000

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Re: Coke Forge Build
« Reply #161 on: May 25, 2015, 04:57:00 PM »
not only dus he have a hammer fetish by the look of things he has one for vices as well

Offline vtsteam

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Re: Coke Forge Build
« Reply #162 on: May 25, 2015, 05:02:32 PM »
Agreed Bob, anybody with ten vises is really screwed up.

 :ddb:
I love it when a Plan B comes together!
Steve
https://www.youtube.com/watch?v=4sDubB0-REg

Offline mattinker

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Re: Coke Forge Build
« Reply #163 on: May 25, 2015, 05:07:22 PM »
I have at least ten vices! Three of them are leg vices, another three are tool makers vices!

I should qualify! Regards, Matthew.

Offline vtsteam

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Re: Coke Forge Build
« Reply #164 on: May 25, 2015, 05:10:24 PM »
Hmmmm. I might just qualify, too....4 drill press vises alone, 3 mill, 4 bench, etc.
I love it when a Plan B comes together!
Steve
https://www.youtube.com/watch?v=4sDubB0-REg

Offline krv3000

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Re: Coke Forge Build
« Reply #165 on: May 25, 2015, 05:20:03 PM »
well im prawd to say I have a D.T.I fetish 

RobWilson

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Re: Coke Forge Build
« Reply #166 on: May 31, 2015, 12:29:23 PM »
A wee diversion form the forge , I need a pair of ramps for work so I knocked these up  :zap:





3ft x 1ft x6"  ,made from 1/8 plate    ,,,,,,,,,,, good for 50 ton the pair  :D


Rob

Offline awemawson

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Re: Coke Forge Build
« Reply #167 on: May 31, 2015, 12:59:41 PM »
Nice Rob, they look good and stout  :clap:

Are they for permanent installation or will they be moved about? If the later I suggest a couple of finger recesses or you'll never get a grip on them to pick them up
Andrew Mawson
East Sussex

RobWilson

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Re: Coke Forge Build
« Reply #168 on: May 31, 2015, 01:10:22 PM »
Nice Rob, they look good and stout  :clap:

Are they for permanent installation or will they be moved about? If the later I suggest a couple of finger recesses or you'll never get a grip on them to pick them up

"Never"     !   ,,,,,,,,,,,,,,,,,,,,,,,, funny that  Andrew :scratch: ,I have been moving them about all day  , they are easy enough to get hold of  :thumbup: 

Rob

Offline modeldozer

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Re: Coke Forge Build
« Reply #169 on: May 31, 2015, 01:42:28 PM »
Very nicely done.   :clap: :clap: :clap: :bow: :bow: :bow:

 :beer:
Abraham

Offline awemawson

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Re: Coke Forge Build
« Reply #170 on: May 31, 2015, 01:49:33 PM »
""Never"     !   ,,,,,,,,,,,,,,,,,,,,,,,, funny that  Andrew :scratch: ,I have been moving them about all day  , they are easy enough to get hold of  :thumbup:  "

Wait 'til they're wet and oily  :lol:
Andrew Mawson
East Sussex

RobWilson

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Re: Coke Forge Build
« Reply #171 on: May 31, 2015, 02:52:14 PM »

Wait 'til they're wet and oily  :lol:

Are we talking about my ramps or your pig here Andrew  :lol: :lol:

Rob

Offline awemawson

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Re: Coke Forge Build
« Reply #172 on: May 31, 2015, 03:51:58 PM »
Pigs are impossible to catch and pick up when they are dry and clean, never mind wet and oily  :bugeye:
Andrew Mawson
East Sussex

Offline vtsteam

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Re: Coke Forge Build
« Reply #173 on: May 31, 2015, 08:44:47 PM »
Really nice, Rob!  :thumbup:  :beer:
I love it when a Plan B comes together!
Steve
https://www.youtube.com/watch?v=4sDubB0-REg

Offline micktoon

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Re: Coke Forge Build
« Reply #174 on: June 01, 2015, 04:17:29 AM »
Hi Rob , nice job there, they look like tey will stand the test of time ok. Did you use your new plasma cutter to cut the parts out ? Does it leave good enough finish to weld without much grinding ?
 Cheers Mick