Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Model & Toy Steam Engines – Stirling Cycle – Flame Lickers – Small Antique Originals => Topic started by: SteamerJ on December 16, 2022, 01:59:18 pm
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Jensen began using immersion heaters after Tom Sr. passed.
From 1193-94 all 3" boilers had immersion rods. They were 500 or 550 watts until the 660s were adopted in time for the 95G.
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I have a 55G and 20G from 2000 and they are 500 watt heaters.
Thanks Brett! That is exactly what I wanted to know.
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I have a 55G and 20G from 2000 and they are 500 watt heaters.
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So the ones that they were using before the new 660 watt were probably 550.
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Bruce, when the 51R is finally worn out...it's yours!
Rog
When that Jensen 51R finally does wear out, I don't believe that anyone who is alive today will still be around!
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Bruce, when the 51R is finally worn out...it's yours!
Rog
...😄, I'm sure your Son or Daughter's would find a rightful place of honor for it.
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Bruce, when the 51R is finally worn out...it's yours!
Rog
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Re:"I now have 415 hours put on those rods by me and all are working well. Mine immersion rods also sit in distilled water 100% of the time as I never drain my 51R boiler. 16 years operating this way so far so good!"
She's about worn out Rog, I would be willing to take er' off'in your hands. 😄👍
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Didn’t they use around 500 for awhile?
John, you may be right if you count the "dry" cartridge heaters that fit inside a try tube cavity inside the earliest Jensen boilers.
I know you can buy 555 watt immersion heaters now from HotWatt, but I believe the only ones sold directly by Jensen are 660 watt. As for durability, I put two new Jensen sourced 660 watt heaters into my Jensen 51 replica in 2006 along with one of the original used 300 watt rods that came with that 1960's engine.
I now have 415 hours put on those rods by me and all are working well. Mine immersion rods also sit in distilled water 100% of the time as I never drain my 51R boiler. 16 years operating this way so far so good!
Rog
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The heater on a Jensen 25 is an immersion heater (I call it a cartridge heater) and
the resistance measures in the low 30's ohms. I think mine runs at about 400 watts.
Nothing listed on the base. Very fast heater for a 2.5" boiler. Check it out.
Good Luck,
Wayne
That’s a nice engine Wayne! I like the old ones without the reversing gear. The reversing gear on the present engines puts a good bit of drag on them. I prefer a slip eccentric myself.
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I should have stated that I would like to know how much they increased from the previous generation.
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I’m wondering how the new ones compare to the ones I had in the early 2000’s.
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The heater on a Jensen 25 is an immersion heater (I call it a cartridge heater) and
the resistance measures in the low 30's ohms. I think mine runs at about 400 watts.
Nothing listed on the base. Very fast heater for a 2.5" boiler. Check it out.
https://youtu.be/uI7AHKqLhU8
Good Luck,
Wayne
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Didn’t they use around 500 for awhile?
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Earliest immersion rod heaters used in 5 inch boilers were 300 watts. Heaters used in 3 inch boilers with the introduction of the Jensen 95 were 660 watts.
Rog
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What was the wattage of the original Jensen immersion rod in the 3 inch boiler?