Office of Steam Logo_1

Author Topic: M90 hit n miss compressed air conversion?  (Read 178 times)

ShadetreeMotorcycle

  • Full Member
  • ***
  • Posts: 537
M90 hit n miss compressed air conversion?
« on: March 28, 2021, 09:14:49 pm »
I ran across this video of a hit and miss engine that runs on compressed air.
  It does "miss" and sounds pretty good!
There are free plans to build it, but the very first thing I thought was how it looked like an air cooled version of M90.
  I have so many projects going, the thought of machining an entire engine again is a bit off putting(right now) BUT the magic is a clever valve in the head. Got me thinking it would be Big fun to just make an "air-head" for an M90! I have not looked into the details but wouldn't it be nice to just bolt a self made head on your M90 and run indoors on compressed air? And be able to covert back to Zippo fuel head in minutes?
    Just thought I would throw the idea out there in case someone wants to give it a go
( before me)

https://youtu.be/iHyCNKDtz9s

70Rcode

  • Jr. Member
  • **
  • Posts: 125
Re: M90 hit n miss compressed air conversion?
« Reply #1 on: March 30, 2021, 10:18:00 pm »
Sounds more like a "hit,hit,hit,hit...miss" air powered steam engine ! .....I'm used to the gas & spark h & m sounds indoors.....but air fired might be someone's thing....Thx for sharing, .....tom

cheepo45

  • Jr. Member
  • **
  • Posts: 22
  • Location: New Castle, Delaware USA
Re: M90 hit n miss compressed air conversion?
« Reply #2 on: March 31, 2021, 07:18:26 am »
Here is a video of this engine after I got it sorted out.
It was one of my most fun builds.
It will run all day at the shows without needing any attention - unlike the IC Hit and miss engines!
I do like the idea of interchangeable heads for the M90.
Scott
https://www.youtube.com/watch?v=o-MllMN0dw4

RedRyder

  • Administrator
  • Hero Member
  • *****
  • Posts: 3012
  • Location: Connecticut - USA
Re: M90 hit n miss compressed air conversion?
« Reply #3 on: March 31, 2021, 09:14:23 am »
Love it!

Nick

  • Administrator
  • Engineer
  • *****
  • Posts: 6230
  • Location: Minnesota, USA
    • Nick's Flickr Album
Re: M90 hit n miss compressed air conversion?
« Reply #4 on: March 31, 2021, 09:24:47 am »
That is an awesome setup Scott!  8)
Nick

ShadetreeMotorcycle

  • Full Member
  • ***
  • Posts: 537
Re: M90 hit n miss compressed air conversion?
« Reply #5 on: March 31, 2021, 10:01:03 am »
It sounds cool, and pairs nicely with that marble run...I got to get one of those pretty soon. Thanks for sharing the video!

Jim

  • Administrator
  • Hero Member
  • *****
  • Posts: 3695
  • Aussie Steamer always on the boil :)
  • Location: South Coast of New South Wales Australia
Re: M90 hit n miss compressed air conversion?
« Reply #6 on: March 31, 2021, 06:12:44 pm »
And great for running inside with no fumes :)
_______________________________________________
Cheers.
Jim

My YouTube Channel https://www.youtube.com/user/Blue123Heeler/videos


MasonvilleEngines

  • Jr. Member
  • **
  • Posts: 166
Re: M90 hit n miss compressed air conversion?
« Reply #7 on: April 02, 2021, 01:16:32 pm »
Cool set up, this came up in my feed after watching this vid, like the idea of a quick change head.


Len.


https://youtu.be/CXH2nNLmBXo

txlabman

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 2405
  • Location: Plano, Texas
Re: M90 hit n miss compressed air conversion?
« Reply #8 on: April 03, 2021, 10:23:06 am »
Here is a video of this engine after I got it sorted out.
It was one of my most fun builds.
It will run all day at the shows without needing any attention - unlike the IC Hit and miss engines!
I do like the idea of interchangeable heads for the M90.
Scott
https://www.youtube.com/watch?v=o-MllMN0dw4

Very nice build Scott.

classixs

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 1911
  • Location: Jutland
    • www.SteamUp.dk
Re: M90 hit n miss compressed air conversion?
« Reply #9 on: April 03, 2021, 01:11:43 pm »
Sure is a cool engine Scott, well done!

Just subscribed and went through your YouTube channel, and wonder how the hit&miss is controlled on the two-stroke Jan Ridders there?
Cheers
Jan
WEBSITE: SteamUp YOUTUBE: SteamUp

cheepo45

  • Jr. Member
  • **
  • Posts: 22
  • Location: New Castle, Delaware USA
Re: M90 hit n miss compressed air conversion?
« Reply #10 on: April 05, 2021, 08:24:09 am »
The hit and miss mechanism on the Jan Ridders engine uses a weight and a spring to pull the hall effect trigger magnet away from the sensor as the RPM's rise.
I got the idea from working on Fiat automobiles in the 70's - they had this type of arrangement on the distributor rotor as an RPM limiter.
I had trouble with the engine running away as the fuel level dropped - so this was my solution.
Scott

RedRyder

  • Administrator
  • Hero Member
  • *****
  • Posts: 3012
  • Location: Connecticut - USA
Re: M90 hit n miss compressed air conversion?
« Reply #11 on: April 14, 2021, 07:26:56 pm »
I have seen Scott's Hit & Miss steam or air engine up close at Rough & Tumble. It is a really neat piece.

Gil

 

May EOTM

Earlytimes - “Märklin 4122/9“ c1907