Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Scale Model Gas Engines - Hit & Miss - Throttle Governed - Non-Compression – etc => Topic started by: Raphael on September 18, 2019, 01:59:48 pm

Title: Re: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: Raphael on September 19, 2019, 01:32:03 pm

Bonjour,

Addition : about my engine running in the opposite side, I also moved the big pinion that is behind the cam and not checked if it had a precise position with respect to said cam. I guess it is the answer to this mystery.
If Jin reads this message, perhaps he will confirm and indicate how to position the big pinion regarding a top dead point.

Title: Re: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: Raphael on September 19, 2019, 01:26:06 pm

Bonjour Pascal,
Bas luck indeed, mine arrived correctly, I just paid an extra fee of 30,00 €. Alain also got his one.
I hope you will finally succeed because it is a real fun to see this engine hit and miss. Let us know the next episodes of your adventure.

Title: Re: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: america12mj on September 19, 2019, 03:01:57 am

bonjour raphael
tu as de la chance, mon moteur a été retourné en chine  .............. le problème est la poste française, ils ne m'ont  jamais contacter par mail ou téléphone pour leurs soi-disant passage pour livraison.
je suis très très en colère ??? ??? ??? ??? avec collissimo international.
tous est a refaire, sinon je demande le remboursement par paypall

hello raphael
you're lucky, my engine has been returned to China .............. the problem is the French Post, they never contact me by mail or phone for their so-called passage for delivery.
I am very very angry with collissimo international.
all is to redo, otherwise I ask for the refund by paypall

Title: Re: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: Raphael on September 18, 2019, 03:06:40 pm

Bonjour Len,
Thank you for your explanation. Just a detail, I do not know how I changed the timing of my engine I just removed and replaced the screw and the pinion of the exhaust cam to put back verticl the pusher before tightening everything

Title: Re: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: MasonvilleEngines on September 18, 2019, 02:53:40 pm

Hi,
 I have several engines timing set past top dead center run opposite. Changing timing before or after can allow a single cylinder engine to run either direction. Timing at exact TDC  might allow an engine to run in both directions.


Len.

Title: The mystery of the vertical Microcosm Hit & Miss engine #3
Post by: Raphael on September 18, 2019, 01:59:48 pm

Bonjour,
It was not obvious on my previous videos, but I had a lot of difficuties to start my engine. Having solved my problem of loose cam, I try out of curiosity to run my engine in the opposite direction.
And there, surprise, it starts almost at the first time! How is it possible ? This engine can run in both directions ? Have you got any idea of what happens to my engine ? The proof :
https://youtu.be/r_8UiQY9oGg