Hi Allan, many thanks for watching and for your kind comments. Part three will be going up in the next couple of weeks. I wish you every success with your own Petter A1 restoration!

Thanks Bill 👍

It has a governor that sets the speed depending on power output , usually 700 rpm for the standard 1.5 HP version. 1 HP engines are 500 rpm, 2 HP at 1000 RPM. There were other speeds available for special order but these are standard. There is an adjustable spring on the carburettor linkage that can apply more tension if you wish to increase the idle, or run it at a higher speed continuously.

The condenser helps to reduce the spark that is generated across the points when they open. If the condenser fails or is faulty then the points will wear out much quicker

I just used emery cloth and then wet & dry. It does gradually go rusty again, despite me rubbing oil on it. Ideally I should clean it up, polish it and apply clear lacquer which would stop it going rusty between runs.

Hi, many thanks for your view and your comment. I've been told that a reading of OVER 4k Ohms (4000) from the high voltage terminal of the coil to either wire coming out of the coil, indicates that it is faulty. I hope this helps :-)

@@heritagemachinery thanks for your reply. That's good to know. I have replaced the condenser and had the magneto sitting on a radiator for a few weeks. I will try measuring the resistance. I need to clean up the points and give it a test but my Ruston and Hornsby PT sat half buried in a field for approximately 60 years. I don't hold out too much hope for the mag working. It's been three years of work to unseize the engine and get it all stripped down and cleaned up. It's ready to rebuild now and even has original paint!

@@gillonstewart1601 Whatever the outcome, bravo to you for putting in the effort. It sounds like you've done brilliantly so far!

Thanks Geoff. That was always the intention of the blog, to document my (albeit amateur) efforts. If it's of use to others then that's nice to know 👍

@@heritagemachinery BTW, just ordered a set of piston rings from the Ebay guy. Not going to disturb my piston (aint broke, don't fix!), but those rings are not going to be available much longer. I might even get another 'D', sometime. Cheers!

Thanks Stephen. I'm by no means an expert but it explains the basic strip down.

Thanks for your comment Jan. I found it a little bit tricky putting the decals on. Take your time and you will get it right. The radiator cooled d-types look great.

@@heritagemachinery d

Thanks Callum. As you might tell, I'm a bit new to stationary engines, and I'm not too sure what to do! Thanks for the advice, I'll give it a go next time.

slipryeel Thanks, I'll have a look. Anything to save a few quid.

slipryeel like where from? I’ve not found any

Thanks for watching and commenting. All the best!

I have just seen my friend driving around on his Marshall s type steam roller