Weird 520

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ryan20strohl
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Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Mon. Jul. 16, 2012 7:27 pm

question for all uses guys out there lol if you go on youtube you will find a marksupply video, theres 3 of them anyway it looks like a 520 with a rotating pot :shock: or did he fabricate it well I figured id shoot it out to uses guys see if u can come up with something

Pacowy
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Posts: 2809
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Mon. Jul. 16, 2012 7:41 pm

It looks like a "clinker removal ring" was added to the pot, rotated by a cam added to the auger. It seems like this was done as part of assessing the ability of the S20 stoker to burn bituminous coals. Most of the larger and older EFM stokers with which I am familiar were built with full rotating pot assemblies.

Mike

ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Mon. Jul. 16, 2012 7:57 pm

did they make an s20 rotating pot? ive never seen them or heard of them and the feed pipe is even in the same place as a 520, different

ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Mon. Jul. 16, 2012 7:59 pm

i understand he modified it, its neat tho

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Rob R.
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Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Mon. Jul. 16, 2012 8:30 pm

ryan20strohl wrote:did they make an s20 rotating pot?
Not that I am aware of. I think the stoker you saw in the video was a one-off custom assembly of some used components.

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stoker-man
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Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Tue. Jul. 17, 2012 9:24 pm

I think it was from a van wirt. Joe made it. That unit was sent to Wyoming to be used with a Prill stoker, which burns Wyoming soft coal. It was a forerunner to making a special efm pot for use in Wyoming. It ended up working very well after some kinks were worked out.

I tested the Wyoming coal in our 520 in Emmaus and if it was sized right, it burned just fine in our pot, without modification. Problem was, there was no breaker nearby who would make the properly sized coal. I'm not sure how the sales have been out there.

ryan20strohl
Member
Posts: 118
Joined: Tue. Jul. 03, 2012 10:00 pm
Stoker Coal Boiler: efm stoker and allen stoker
Coal Size/Type: rice and buck
Other Heating: allen stoker
Stove/Furnace Make: EFM
Stove/Furnace Model: 520

Post Sun. Jul. 22, 2012 8:18 pm

thats some good info
:D

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