Office of Steam Logo_1

« previous next »
Pages: [1]

Author Topic: Stuart HB4 Converter from S9 to D10  (Read 1167 times)

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Stuart HB4 Converter from S9 to D10
« on: May 24, 2025, 10:47:19 am »
Well, since the HB4 doesn’t holdup for a no. 9 I’ve converted the plant to be used with the D10V. 

The previous boiler on the D10V didn’t work for it.  The HB4 is STILL having a tough time holding up with steam. The burner is set correctly but gives off terrible odors.

I’ve tried every thing.  If anyone knows the blowtorch nozzle Keith Appleton uses with his HB’s let me know.

Meantime, enjoy the show:

[ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]

Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin

  • Global Moderator
  • Engineer
  • *****
  • Posts: 5148
  • Wherever you go ......... there you are!
  • Location: Eastern Sierra
Re: Stuart HB4 Converter from S9 to D10
« Reply #1 on: May 24, 2025, 01:44:02 pm »
I'd guess that will prove to be a better pairing, once you get the boiler fired effectively.

Meanwhile, I don't think you want to be running two belts to your genny, off of different sized pulleys. The only way for that to work is for one or both of the belts to be slipping some!
Logged
"Information is not knowledge, Knowledge is not wisdom, Wisdom is not truth, Truth is not beauty, Beauty is not love, Love is not music: Music is THE BEST...   
Wisdom is the domain of the Wis (which is extinct). Beauty is a French phonetic corruption of a short cloth neck ornament currently in resurgence..."
F. Zappa ... by way of Mary, the girl from the bus.

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #2 on: May 26, 2025, 07:06:20 am »
Quote from: Stoker on May 24, 2025, 01:44:02 pm
I'd guess that will prove to be a better pairing, once you get the boiler fired effectively.

Meanwhile, I don't think you want to be running two belts to your genny, off of different sized pulleys. The only way for that to work is for one or both of the belts to be slipping some!

Well one is slightly smaller.  I barely have to crack open the throttle and the thing spins insanely fast.  I didn’t put the governor on as those microcosm governors tend to leak steam and water which reduces efficiency if I’m having a firing issue.
Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #3 on: May 26, 2025, 10:10:46 pm »
BRICK & MORTAR…

Since it’s not letting me
Upload photos I will just let you watch a video:


Lots of math involved, fractions and measuring to get it right!!!

This was an all day project.  Had to find wood the right size, cut out and get measurements correct.  Reverse engineer the main D10 base, then stain and seal the wood to project it from polyurethane.  I then used professional grade super glue to glue each brick on, one by one, this took about 4 hours.  Tedious work.   Once that was done I used a model wood putty to slab on and then clean up.  Getting things right was a LOT of work and quite a challenge but it looks wicked!


Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #4 on: June 01, 2025, 09:43:50 am »
Hey guys, many updates since the last-

The water tank has a condensor coil which keeps the water near boiling and condenses the used steam to water preserving water consumption.

Also, added cladding on the steam pipe and exhaust pipe to the oil trap.

[ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]

Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #5 on: June 01, 2025, 04:06:42 pm »
Update again…

Drilled the hole and tapped it to 1/4-40 in water tank, used reducing bushing and drilled 13/64” inside the bushing so the OD of the copper tube will slide in but enough space to solder it into the bushing.  Drilled a 13/64” hole in exhaust chimney making sure it’s squared up.

Screws into the top of the water tank, and piped to the exhaust chimney.  Will look cool, and stays hot enough that no steam will condense and fall into the fire chamber.

[ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]
Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin

  • Jr. Member
  • **
  • Posts: 92
Re: Stuart HB4 Converter from S9 to D10
« Reply #6 on: June 02, 2025, 12:18:39 pm »
Hi,

That's an amazingly small pressure gauge.  What is that, maybe 3/4"?  Are gauges that small accurate?  Where did you source it from?

Paul
Logged

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 4122
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #7 on: June 02, 2025, 02:19:07 pm »
Quote from: pwalchak on June 02, 2025, 12:18:39 pm
Hi,

That's an amazingly small pressure gauge.  What is that, maybe 3/4"?  Are gauges that small accurate?  Where did you source it from?

Paul

It is a Stuart gauge.  It is very accurate.

They sell them on their website.

https://www.stuartmodels.com/
Logged

  • Jr. Member
  • **
  • Posts: 92
Re: Stuart HB4 Converter from S9 to D10
« Reply #8 on: June 02, 2025, 06:33:34 pm »
Thanks Charlie!
Logged

  • Jr. Member
  • **
  • Posts: 90
  • Location: France Profonde
    • Photography and Wood Butchery
Re: Stuart HB4 Converter from S9 to D10
« Reply #9 on: June 05, 2025, 08:21:02 am »
I like that boiler. Can you give me more information on it? Thanks
Logged
I had an old college professor who used to say, "The cows may come and the cows may go, but the bull goes on forever."

  • Full Member
  • ***
  • Posts: 617
  • Location: Plano, Texas
Re: Stuart HB4 Converter from S9 to D10
« Reply #10 on: June 09, 2025, 08:23:07 am »
Quote from: Timvrip on June 05, 2025, 08:21:02 am
I like that boiler. Can you give me more information on it? Thanks


It is a Staurt Hb4 boiler.
Logged
The steam engine has done much more for science than science has done for the steam engine.”

― Lord Kelvin
Pages: [1]
« previous next »