These small engines are direct injection hence no glow plugs. They are not difficult to start except in the coldest conditions, I worked for a Hatz dealer for a while working on engines of all sizes and ages. Many were crank/pull start only. The crank models(earlier) had a compression release that worked off the valve train like a clock work. It advanced one click per revolution until it kicked off, the engine immediately started. The later ones were pull starts. I have not had hands on one of the smaller framed diesels like this one.
I suspect its going to be quite a vibrator.
A motorcycle frame is up to the task, to base a diesel build around a bicycle frame is asking for it. A fully built custom frame would be necessary for sure.
Not trying to be negative only pointing out facts. With compression ratios in the twenties the power strokes are on the severe side. When a diesel is coupled with something lie a generator or water pump the mass tends to dampen the strokes. In something light its not pleasant.
I rebuilt a number of the older Hatz engines under contract for the Military. I hat to run them with out the pump but on a pump frame. You had to wedge them between 4 concrete blocks to keep the engine from walking all over the run area. Was a different matter when hooked to the pump assembly for the final test. I see many diesel M/C conversions for sale, must not be as cool as the builder thought?
I love diesels and have driven them for years, and in fact still have one of the older 6/8hp Hatz I have been saving for a boat build. As I said I haven't had hand on one of the smaller ones. Hopefully Im wrong. Somebody buy one and lets see. A diesel "bike" would be way cool.
