Berkman wrote: ↑Sun Dec 12, 2021 7:18 pm
what's the easiest way to make a flange? would think there might be a standard size that could be used from an auto exhaust company etc perhaps.
I used a piece of 20ga sheet i had in the scrap pile and a tuna fish can, it was the correct size to fit the allen modals stack casting
I have four more of those fans, going to make up plates for the rest of my equipment
That’s what I Am thinking on the blower I posted, use piece of 4” duct and a 4” starting collar attached to one end and slip it over the stack, and Bob’s your uncle.
Geo
If it ain’t broken keep working on it until it is .
Geo
i would think twice about using a fan where the motor is directly exposed to the exhaust gas such as the in-line fan whose picture you have posted.
unless i am missing something -> most motors do not like to run in temperatures such as are experienced in the exhaust gas stream. - particularly something with thermoplastic blades...
unless i am mistaken, this fan is intended to use in the hot air distribution of a heating furnace -> not the exhaust combustion stream.
Bill Shields wrote: ↑Mon Dec 13, 2021 1:21 pm
i would think twice about using a fan where the motor is directly exposed to the exhaust gas such as the in-line fan whose picture you have posted.
unless i am missing something -> most motors do not like to run in temperatures such as are experienced in the exhaust gas stream. - particularly something with thermoplastic blades...
unless i am mistaken, this fan is intended to use in the hot air distribution of a heating furnace -> not the exhaust combustion stream.
These fans/motor are designed to exhaust fuel gases and supply O For the burners in hot air furnaces, not sure how hot the steamer gets but I am planning to measure the temperature on Sat. when we fire it up.
Geo
If it ain’t broken keep working on it until it is .
Geo
Geochurchi wrote: ↑Mon Dec 13, 2021 4:12 pm
These fans/motor are designed to exhaust fuel gases and supply O For the burners in hot air furnaces, not sure how hot the steamer gets but I am planning to measure the temperature on Sat. when we fire it up.
Geo
when i am warming my locomotive, the exhaust is barely warm enough to warm hands. I can pick up the fan off the stack with my bare hands when i have enough steam to cut over to the blower
In all the decades that I have been doing this, I cannot remember anyone saying that their 'electric fan overheated'...
I've melted one. It was 99% plastic though...
I have one made up for the propane fired wagon which is a plastic fan blade, used originally for a booster fan inline for ductwork. I'm yet to melt it, but it has probably 1/3rd hot gas and 2/3rds cold air draw in. I don't need that much draft with the Solar burners at low rate to get enough fire. (I need a LOT more draft when pulling me around...)
Coal fired- I have both 12 and 120V fans around- the 12v one is used with the 4" traction, and has a bit of a dubious casing made of cardboard...I have to be careful about how wet it gets, but it does the job.
You could always do the what a shortline in Western NY, the Arcade and Attica Railroad, did.
Fan mounted on a post and connected to the smokestack with tubing. It kept some of the heat out of the motor.
"One cannot learn to swim without getting his feet wet." - Benjamin Maggi
- Building: 7.25" gauge "Sweet Pea" named "Catherine"