Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: Marten , Howe's & Bayliss - PB II  (Read 1057 times)

KBIO

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 509
  • Location: Dinan (France)
    • http://modelismenavalvapeur.forumactif.com
Marten , Howe's & Bayliss - PB II
« on: November 10, 2023, 09:29:25 am »

Hello !
I know that we already spoke of this once but I cannot find the right post and I don't remember...
What is the elbow from the steam inlet valve going directly (or coming from...) the  exhaust box for ??
if someone can refresh my memory ? It looks like a bleed off pressure , but why ??
Thanks for your help.
Actually I modified the original one with the eccentric slip which was not reliable by a Maudlays working perfectly.


ooyah/2

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 756
  • Location: Glasgow
Re: Marten , Howe's & Bayliss - PB II
« Reply #1 on: November 13, 2023, 04:29:29 pm »

Yves
Can you please post a better pic of the cylinder head showing steam inlet to steam chest and the exhaust out put from the back and a pic showing the cylinder heads from above.


Thanks
Geo
Logged

DBS88

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 488
  • Model Boat Mayhem is Great!
  • Location: Surrey
Re: Marten , Howe's & Bayliss - PB II
« Reply #2 on: November 15, 2023, 01:13:41 pm »

Here are a couple of photos that might help the conversation
Logged

DBS88

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 488
  • Model Boat Mayhem is Great!
  • Location: Surrey
Re: Marten , Howe's & Bayliss - PB II
« Reply #3 on: November 15, 2023, 04:55:49 pm »

Here is a photo of the top of a PB2 Engine, hopefully this helps further
Logged

KBIO

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 509
  • Location: Dinan (France)
    • http://modelismenavalvapeur.forumactif.com
Re: Marten , Howe's & Bayliss - PB II
« Reply #4 on: November 15, 2023, 05:15:03 pm »

Hello !
Thank you DBS.
Pn the last pic , the steam inlet in on the left. ;)
Cheers !

Bunkerbarge

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 2,501
  • Location: Halifax, UK
Re: Marten , Howe's & Bayliss - PB II
« Reply #5 on: November 15, 2023, 07:09:06 pm »

Do the cylinders have independent exhausts?
Logged
"Dirty British coaster with a salt-caked smoke stack, Butting through the Channel in the mad March days"

KBIO

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 509
  • Location: Dinan (France)
    • http://modelismenavalvapeur.forumactif.com
Re: Marten , Howe's & Bayliss - PB II
« Reply #6 on: November 16, 2023, 08:09:09 am »

Hello !
When I opened to set the timing gears, both exhaust enter in the same box .
This exhaust box is open toward atmosphere on one side (exhaust) and the other side is linked to the distribution valve (?) .
Now ! I do not remember how was this valve = 2 or 3 ports ? I do not think that there is 4 ports as the reverse works with the Maudslay. But no guarantee !
i am afraid to open it up again as it is a real trick to set the timing properly and I do not not know if the factor "luck" works at each time ! :embarrassed:
Have a good day ! :-)

Pages: [1]   Go Up
 

Page created in 0.085 seconds with 21 queries.