Office of Steam Logo_1

« previous next »
Pages: 1 [2]

Author Topic: Microcosm M90- BBBBLOOOWN UP, SIR  (Read 581 times)

RedRyder

  • Administrator
  • Hero Member
  • *****
  • Posts: 4350
  • Location: Connecticut - USA
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #15 on: September 05, 2019, 09:44:22 pm »
Benny, your engine looks terrific.

Regarding an exhaust cap, if you are referring to those flapper lids on top of the stack, I recommend you dont do it. A hit & miss engine does not want a long exhaust pipe. The longer the pipe, the more it loses the ability to cool itself while free wheeling. A flapper cap will further exacerbate an already less than desirable arrangement by not letting cool air to travel back into the cylinder 20 to 30 times between firing. That's my 2 cents worth!

Again, it looks fantastic!

Gil
Logged

Dr.Rev.DelmarMacReady

  • Full Member
  • ***
  • Posts: 603
  • Location: Birmingham, AL U.S.A
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #16 on: September 06, 2019, 07:31:02 am »
Quote from: RedRyder on September 05, 2019, 09:44:22 pm
Benny, your engine looks terrific.

Regarding an exhaust cap, if you are referring to those flapper lids on top of the stack, I recommend you dont do it. A hit & miss engine does not want a long exhaust pipe. The longer the pipe, the more it loses the ability to cool itself while free wheeling. A flapper cap will further exacerbate an already less than desirable arrangement by not letting cool air to travel back into the cylinder 20 to 30 times between firing. That's my 2 cents worth!

Again, it looks fantastic!

Gil
Thank you for that info, Gil. Cooling air was something I didn't consider. And many thanks for the feedback.
Logged
Bennydaheeb

Nick

  • Administrator
  • Engineer
  • *****
  • Posts: 8177
  • Location: Minnesota, USA
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #17 on: September 06, 2019, 11:30:26 pm »
Thanks Gil, hadn't even thought of that
Logged
Nick

Roscoe

  • Jr. Member
  • **
  • Posts: 173
  • Location: Northwest, Indiana
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #18 on: September 09, 2019, 09:40:07 am »
Was wondering about that pipe & flapper thing kind a figured it would cause issues. Thanks Gil, as always love your knowledge.
Logged
John

odu50

  • Jr. Member
  • **
  • Posts: 44
  • Location: Genève
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #19 on: September 10, 2019, 02:25:02 pm »
Nice work, Beautiful finish
Logged

Dr.Rev.DelmarMacReady

  • Full Member
  • ***
  • Posts: 603
  • Location: Birmingham, AL U.S.A
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #20 on: September 10, 2019, 02:54:25 pm »
Quote from: odu50 on September 10, 2019, 02:25:02 pm
Nice work, Beautiful finish
Thank you for the kind words...I find camera angles are helpful when trying to hide blemishes :D
Logged
Bennydaheeb

odu50

  • Jr. Member
  • **
  • Posts: 44
  • Location: Genève
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #21 on: September 10, 2019, 03:21:10 pm »
Exactly, I like the rustic side of the box
Logged

Dr.Rev.DelmarMacReady

  • Full Member
  • ***
  • Posts: 603
  • Location: Birmingham, AL U.S.A
Re: Microcosm M90- BBBBLOOOWN UP, SIR
« Reply #22 on: September 10, 2019, 04:08:03 pm »
Quote from: odu50 on September 10, 2019, 03:21:10 pm
Exactly, I like the rustic side of the box
Thank you...I am lacking in fine finish skills like yours, and make do with simple rustic charm.
Logged
Bennydaheeb
Pages: 1 [2]
« previous next »