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This is amazing. The attention to detail is something else. Making your own custom generator.. think that takes the prize. was trying to suss out what equipment the guy was using. I guess this sort of project is not possible using the type of 'mini' lathe/mills people generally have in the shed...

OK, I felt like i needed to do the corny video of the running and build. Apologies for the royalty-free music. I wasn't feeling inspired :) Patrick

Nalon Viper seems like a great next challenge and has a great history too. Im reading the modelenginenews and MotorBoys sites articles and plans. If Peter Chinn is involved in naming it, it has to be worthy of a build!

UPDATE: She Lives!!!!!! :D:D:D:D After a few more hours in the shed.... success!!!! Thanks for all the advice. So I had to go backwards to go forward and ended up re-making the cylinder liner and piston. This time I used carbide grinding paste after having had the bad previous experience...

Hi Dan, I'd love to build one of those. I'm working up to it. Regarding the ignition I wouldn't worry too much as there are a number of commercial options and plenty of schematics if you want to have a go at building your own. Also there must be a manual contact-breaker option too ? Take a look...

Hi, i think it was the pic and that was just a spec of crud. Here is a better photo. Thanks, P

Ok, a status update on this. Like all things as a beginner with this hobby/passion, sometimes when you think you're really close you have to back up again to get to the finish. Here's where I am at right now: I mentioned above that I lost compression while I was testing. I suspect that its...

Hi Thanks Ramon, ill remove the threaded part lower down and try again. I have made a little fuel bowl that screws on to that and the spray bar is that long to reach the bottom. I could shorten it and use a bit of tube too.

OK. Status update. Spurred on by the helpful comments in this thread, I am taking it that there is nothing fundamentally wrong with the timings etc and I should keep going! My thought is that I had the hole in the spray bar facing in the direction of the flow rather than 90deg. Since writing...

Thanks for all the replies above. One thing that came to mind going through the replies was this: Could there be any other leaks e.g between the bottom of the cylinder liner and the crank case be a cause of the fuel being pushed back down the fuel line that I mentioned above? i.e. when I turn...

Hi, yes the hole is 1mm. The spray bar is 3.4mm and the venturi is 5.25mm. I had the spray bar set at 90deg.

Good luck mate. Hopefully we'll get them running at the same time!

Thanks Stackerjack. Yes the hole is 1mm. The spray bar is 3.4mm and the venturi is 5.26mm.

Thanks for the reply. Ill post more details of the carb later today when I can sneak away from my desk. I seem to recall the hole in the spray bar being 1mm but I will re-check. I have the Webster running on that carb so I know it works (but the Webster is much larger displacement so probably...

Hi, the spray bar has two holes (It's drilled all the way through) and they are at 90 degrees to the air flow.

Hi Tim/Scott, thanks both for the helpful replies. I have attached pictures of my setup and the venturi. When I put a finger over the intake and turn, fuel gets sucked in but then seems to move backwards again later in the cycle (watching the bubbles moving in the tube). Fuel definitely makes it...

Hi Everyone, I have got myself stuck on my BollAero build and could really use a hand. I was wondering if there are any 2stroke compression-iginition experts out there that might be able to give me some tips. this is my second IC engine after a Webster and it seems these little puppies are less...

Bit more shed time!

I could actually listen to that all day