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

When I receive mine I will take a look at the camshaft design. I doubt they pressed on the lobes to a shaft but if they did that would not be impossible to redo to correct the rotation of the engine.

I received my H-75 today in perfect condition today.
Guys if you are interested in getting one EBay is your best choice at the moment. eBay has been selling these well below the normal $1500 price. Mine was $510 and one just sold this morning for $527.
Not to many bidders is a Good Thing!!!

I am content with the engine going the wrong way as it is much easier for me to hand start turning the flywheel clockwise. 

I also bid to win this at a good price.

I would rather see them make a water pump that goes the other way which might be a lot more cost effective than re-making the camshafts. As I said before, the radiator doesn't care which way the wind blows through it.

Here is a short video showing a cold start by hand.

Gil

I'm glad to see somebody took advantage of the low bidding on these engines. Most of them have been right around the $500 to $600 range which is a great opportunity compared to the $1500 price if you buy direct.
 I could never afford it at $1500.
 The engine running backwards is not a deal breaker to me just a bad oversight on the Chinese manufacturing.
 I want to run mine but I really want to know if there is piston pin retainers to prevent the pins from scoring the cylinder walls. Many of the other Chinese engines made don’t have the piston pins retained.
 Has anyone actually checked this on the Chinese H75 engine? 

Thanks for the great info RedRyder! I’ll follow that.
 I also feel it will be very simple to modify that centrifugal water pump. Simply by moving the outlet pipe to the other side so it would actually work in the direction it’s turning without having to flip the belt.
The existing outlet could even just be capped off with a small threaded cap which would look very realistic in my opinion.

Nice to get rid of the twisted drive belt.

I'm glad to see somebody took advantage of the low bidding on these engines. Most of them have been right around the $500 to $600 range which is a great opportunity compared to the $1500 price if you buy direct.
 I could never afford it at $1500.
 The engine running backwards is not a deal breaker to me just a bad oversight on the Chinese manufacturing.
 I want to run mine but I really want to know if there is piston pin retainers to prevent the pins from scoring the cylinder walls. Many of the other Chinese engines made don’t have the piston pins retained.
 Has anyone actually checked this on the Chinese H75 engine?

Unfortunately, it has restored the original price. It has stopped now so the H75 engine auction.

To me the more serious issue is the piston pins not being retained by anything!
The piston pins will move during running and ultimately score the cylinder walls and reduce the compression while putting loose metal pieces in the engine!
There is a video on YouTube of the H73 (single cylinder version) disassembled. This video shows the piston pin without any form of retainers. The video shows making retainers by cutting a small piece of O ring and placing it on each side of the piston pin.
This is a quick and clever way to fix this issue. I was thinking of making a small Teflon button to go on each side of the piston pin like what is done on racing engines sometimes.
 I’m a Machinist and own a Lathe and Mill and have at lot of knowledge about engines and racing but many buyers will be stuck with the current Chinese design oversight and Quality issues.
 It’s still a great deal but it’s best to know all the flaws before running it too much.