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: gjf on August 09, 2019, 11:18:23 am

Title: Timing on top dead center
Post by: gjf on August 09, 2019, 11:18:23 am

Gent's

I  need some help to confirm the timing on my engine.
My roller bearings on the c/s were really loose and decided to remove them to make some brass bushings and added oil holes.
I'm adding photos showing the crankshaft in two TDC positions and the position of the cam gear.
Any info would be greatly appreciated.

Gil

Title: Re: Timing on top dead center
Post by: gjf on August 09, 2019, 11:31:39 am

Here is the 2nd photo

Gil

Title: Re: Timing on top dead center
Post by: Stoker on August 09, 2019, 02:07:12 pm

Your valve timing appears to be about right with the first photo showing TDC on the compression stroke.

How is your electrical timing, ie: the position of your magnet on the opposite side of the crank?

Title: Re: Timing on top dead center
Post by: gjf on August 09, 2019, 02:45:51 pm

Stoker,


I marked that part so it is okay
Thanks,

Gil

Title: Re: Timing on top dead center
Post by: RedRyder on August 09, 2019, 09:39:35 pm

It looks just right to me.
It should fire at or near top dead center.
Gil