Oh crap I broke it.... Hot Blast 1500

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: BIG BEAM On: Fri Dec 05, 2008 8:30 pm

One of the things I do now(after breaking a nub off a grate also) is use 2 hands to shake.I hold the end of the handle with my right hand and the shaft that rotates with my left.This way the nub only gets rotated and doesn't get any side to side torque.Also if I feel something get stuck in the grate I stop and pick it out with a long 3/8" x 5' poker I made.
DON

BTW I am still looking for better grates that I can modify for my furnace.Cast iron is EZ to cut and grind and what not but finding something to fit the grate holders is proving difficult.I wonder how 1" thick steel would work?
BIG BEAM
 
Stove/Furnace Make: USS Hot blast
Stove/Furnace Model: 1557M

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: gitrdonecoal On: Fri Dec 05, 2008 10:17 pm

thats what me and my welding buddy are going to do. we are gonna use plate steel, something that will hold up to the heat better than cast. also, these are a two piece system. im going to fabricate the new one with a one piece system. we will keep you posted on how we do
gitrdonecoal
 
Hot Air Coal Stoker Stove: Keystoker 90
Stove/Furnace Make: USSC
Stove/Furnace Model: Hotblast 1557

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: backwoodsbear On: Sat Dec 06, 2008 11:33 am

You have the same problem I have with the Hotblast grates. I attribute it to a grate that is "cast for a price "as opposed to one cast to do its job properly. It is a realitively inexpensive furnace so I feel the improvement is reasonable. I have already broken thee nipples on grates and am finally fed up. Its not the price of the grates---its the downtime. A fabricated steel grate will be solving the problem, otherwise the Hotblast does a fantastic job.
??? Has anyone converted it to a gravity furnace eliminating the motors? How did it work? Possibly a future project for mine and looking for feedback. Thanks. Backwoodsbear in NW PA.
backwoodsbear
 
Stove/Furnace Make: hotblast
Stove/Furnace Model: converted 1200

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Re: Oh crap I broke it.... Hot Blast 1500

PostBy: BIG BEAM On: Sat Dec 06, 2008 12:16 pm

I took a temp reading last night of the bottom of the grate and it was around 200*.The grate holder was 450*.I guess a good grade of steel would stand up to those temps.Do any other boilers or furnaces use steel grates?
DON
BIG BEAM
 
Stove/Furnace Make: USS Hot blast
Stove/Furnace Model: 1557M

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: lene8276 On: Sun Dec 07, 2008 4:54 am

I am sure steel will handle the temps. But that usually isn't the issue. Cast iron actually has a lower melting point compared to carbon steel. However cast iron will keep its shape better and not warp like carbon steel. It will probably work fine if the warping doesn't affect the performance. I attached a link with melting points of alloys.

http://www.muggyweld.com/melting.html
lene8276
 
Stove/Furnace Make: Reading Stove Co
Stove/Furnace Model: Mahantongo cs-45

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: LsFarm On: Sun Dec 07, 2008 1:58 pm

Coal and wood grates are almost universally made from cast iron.. it seems cast survives better in this environment.. But if you don't allow the ashpan to fill up and block air flow [cooliing air] to the bottom of the grates, then steel may hold up fairly well,, I'd design them so you can make them quickly and easily,, and keep a spare set around in case they sag too easlily from heat.

Greg L

.
LsFarm
 
Stoker Coal Boiler: Axeman Anderson 260
Hand Fed Coal Boiler: Self-built 'Big Bertha' SS Boiler
Baseburners & Antiques: Keystone 11, Art Garland

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: wnyjim On: Mon Dec 08, 2008 11:12 am

4 days and burning good!
Thanks to all who helped me out.
I now use the 2 hand shake method and gently is the key.
I had my grate nub welded and seems to be holding up.
I drilled and tapped the back of my front grate to hold the nub of the rear grate firm for a much improved shake.
I drilled out the center holes and ground the side slots just a bit to help the ash come through.
I now poke up through the holes and slots from the bottom after every shake. Anywhere I dont see a nice red glow.
All this seems to have improved the way this furnace runs.
I am using Reading nut and it seems to be burning down good. I have never had a clinker so I think it was more me than the coal.
Got it all piped into my main ducts over the weekend. Enjoying the cold weather and keepin warm.
The Arabs will have to keep the oil I was gonna buy this year. :)
wnyjim
 
Stove/Furnace Make: Hot Blast Model 1500

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: gitrdonecoal On: Sun Dec 14, 2008 1:34 pm

thats it, that is it. i am sick of these grates. the new one came in. LASTED ONLY ONE DAY AND BROKE! i have had it. i have no idea what to do. the front is working good, but the back im poking from underneath. i can limp it along for now, but i need to do something. any suggestions would be great.

john
gitrdonecoal
 
Hot Air Coal Stoker Stove: Keystoker 90
Stove/Furnace Make: USSC
Stove/Furnace Model: Hotblast 1557

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: TimV On: Sun Dec 14, 2008 1:51 pm

I dont know how thick your grates are but the only thing I know of for steel that will stand up nearly as well as cast iron in heat is stainless steel but it cant be cut with a cutting torch .I guess a plasma arc would do it if you had one big enough to do the thickness.
I cant see mild steel grates holding up long without disintergrating.
There is a place in Philadelphia I found a few years ago that cast new parts for antique cook stoves and even did the water heaters that fit down inside the cook tops for heating domestic hot water.If they are still in business I bet they.
I think I have friend that may have the address or phone number. As I recall it was operated some very old guy who only was near phone at lunch time and you had to yell but he did get my friend the parts he needed made from scratch.
TimV
 
Stove/Furnace Make: Energy King Furnace
Stove/Furnace Model: 480 EK

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: wnyjim On: Sun Dec 14, 2008 3:18 pm

Mudman, Did you temper the grate before using it? Just a thought. I got my new one and am tempering it in my coal furnace by letting it set in the ash door undrer the fire. Here is something I found on the web on tempering cast iron grates. As cheap as these us stove grates are I am sure they dont get this before shipment.

all cast iron should be seasoned before using in a normal coal or wood stove fire. This can be done two different ways. The first way is three to five small kindling fires in the stove. These fires should be small and in between each fire the stove needs to cool completely. The second way for seasoning cast iron is taking the new piece of cast iron and placing it into your oven. Starting the oven temperature at 325º and then every 30 minutes go up 25º until the oven reaches its highest temperature. (usually 500º) Do not touch the cast iron is will be HOT. Let the part cool, After all of the steps are done you are ready to start burning your stove
wnyjim
 
Stove/Furnace Make: Hot Blast Model 1500

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: gitrdonecoal On: Sun Dec 14, 2008 3:55 pm

no i did not. i never read anywhere to season the grates like that. only read my manual which said not to start a big fire just a little one, but nothing like the steps you posted. that is really good advice, and i will now do that. thank you very much, and i hope everyone will read this that owns a hotblast. once you figure out these units they will really throw out some heat good.
gitrdonecoal
 
Hot Air Coal Stoker Stove: Keystoker 90
Stove/Furnace Make: USSC
Stove/Furnace Model: Hotblast 1557

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: North Candlewood On: Sun Dec 14, 2008 9:10 pm

Learning something new every day!
Got to love it!
And if you made it out os stainless you could use round stock.
What are your thoughts on that?
North Candlewood
 
Stoker Coal Boiler: Eshland S-130
Hot Air Coal Stoker Furnace: Keystoker A 120
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Baseburners & Antiques: Princess Atlantic Cookstove
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Re: Oh crap I broke it.... Hot Blast 1500

PostBy: wnyjim On: Sun Dec 14, 2008 10:24 pm

Hang in there Mudman. I know these us stoves can be temprmental but they do work well after modification. I am about half way with mine I hope. Been fired non stop for 10 days now and counting. Just got my Dwyer Mark II manometer in the mail. Guess what.....Now comes with plastic fittings to connect it to the flue pipe. :mad: I guess I will have to go shopping for some brake line fittings and connectors to hook it all up. Hoping to see improvement after setting up the baro damper.
wnyjim
 
Stove/Furnace Make: Hot Blast Model 1500

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: gitrdonecoal On: Mon Dec 15, 2008 1:23 pm

hey charles, you are talkin about possibly making a new shaker grate system out of stainless, right? would it hold up you think better than plate steel? would have to make the nub bigger cause the one i got is too small for the handle :lol: too much slop.
gitrdonecoal
 
Hot Air Coal Stoker Stove: Keystoker 90
Stove/Furnace Make: USSC
Stove/Furnace Model: Hotblast 1557

Re: Oh crap I broke it.... Hot Blast 1500

PostBy: North Candlewood On: Mon Dec 15, 2008 6:16 pm

I'm going to measure a 1557 in the AM, lets see what we come up with
Charles
North Candlewood
 
Stoker Coal Boiler: Eshland S-130
Hot Air Coal Stoker Furnace: Keystoker A 120
Hand Fed Coal Stove: Chubby
Hand Fed Coal Furnace: Clayton 1602
Baseburners & Antiques: Princess Atlantic Cookstove
Coal Size/Type: Nut Rice

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