Does anyone sell kits

[Tin Falcon]

Okay, I had no idea you would need to scale up steam production that much depending on bore size, thats good info.

There is a bit more to it than just bore size.
the 8x figure is based on doubling the bore and stroke and assuming the same valve design and same working pressure. and rpm.
this is a rule of thumb.

There are ways of increasing run time. A larger engine will run on less pressure and if you slow the engine it will reduce steam consumption .
you can also increase boiler output/ engine run time by adding a pump to add water.
There is no cut and dry exact. but just wanted to give a heads up . so you were not surprised if one engine runs say 8 minutes on a head of steam and big brother sucks down the steam in a mere minute.
Tin

 

[bobs7-62steamair]

PM Research Inc. sells fully machined kit engines ready for assembly for a lot less than the 1K you mentioned---pmmodelengines.com is their website.

 

[Cogsy]

PM Research Inc. sells fully machined kit engines ready for assembly for a lot less than the 1K you mentioned---pmmodelengines.com is their website.

This thread is 3 years old so the original poster likely doesn't need the info now...

 

[fatvod]

I still appreciate the updates

 

[JCSteam]

Well while your here, kits can be bought from PMR research, I think Stuart are doing ready machined kits, though I am interested if you found something? Have you built an engine up?
As a newbie to the hobby, I would say that these engines can be built at home with limited experience, I just tend to pick everyone else's brains then go ahead and do it, a lathe is only around £500..... or there's a myford on ebay much like my ML4 for only £200.... just a thought

 

[kadora]

Here is link to the producer of stirlings , flame eaters and steam engines
from Germany.
https://www.bengs-modellbau.de