Gardner 1F gas hot tube

As promised here is my garner 1F hot tube gas engine.
Built a few years ago (on old forum) making quite a lot of it myself, crank (fabricated with bar and billet presses and welded together), flywheel was cast and machined by a friend (my lathe wasn’t big enough), hot tube assembly, oiler and various other bits.
Re-rebuilt at end of 2019 ready for 2020 rallying (we all know what happened there) and have made yet another crank (cast in steel in one piece this time), had another piston cast and machined that and had rebore.
Made new exhaust valve chest, big end bearings, main bearings, gear cover/guard (never had one of these), new splash guard also built onto a new steerable wooden trolley and made a lot of mega improvements.

Finished item


Old crank packed beside casting from that


Crank shafts being machined


Made jig ready to machine big end


Mounted and starting machining of big end


Key ways


Crank done


Old and new exhaust valve chest


New mains


Showing oil catcher oil guide on bearing


Crank in


Machining new big end shells


Made gear guard pattern


Casted


Guard on


New splash guard


New piston made alongside old jobby


Some general facing of flange faces


Finally the trolley

Great work!

Alan

Beautiful work... I must admit it took me a while to get my head around the jig for machining the big end...

mattblack wrote:Beautiful work... I must admit it took me a while to get my head around the jig for machining the big end...

As for making my big end bearings (mains for that matter as well) I've never made any jigs, up until now on the Bamford I'm now restoring I've made bearings from Bronze.
I've made big end with a jig from Babbitt as a piece of bronze was going to cost a ridiculous amount, I have some old Babbitt bearings from engines I've worked on in the past to melt down and this was first time I've ever used Babbitt (quite chuffed as I've been wanting to try this for sometime now and finally got up courage (foot up rear I needed really)).
The next topic I post will be the 6hp Bamford so I'll show jig for big end on there.

Wonderful to see. Thanks for posting.