Such a beautiful piece of engineering. Im here from Facebook! Saw a short of you starting the bike. Saw how simple yet complex your engine design was, and became instantly intrigued. Glad you finally have it started!
They have it jetted a little lean. It causes them to backfire through the carb. It really doesn't matter. This thing will vibrate so bad no one will ride it more than one time or one mile.
5 intake ports, two exhaust but the sleeve only has four cutouts. They line up in the correct way during the cycle it's fascinating how these Bristol engines worked.
So exciting! It will be fun to see when all the little bugs get worked out, a permanent starter is figured out and the first road test ride!! Loving the videos, great job to all involved!!
Absolutely magnificent! Ive been excited for this day to come and now im even more excited to see it running and hopefully going on the road sometime! Great work and enjoy ur drinks!
Congrats! Hopefully you'll be able to get the starter situation solved without resorting to dropping compression further. Also, I wonder if you need a stronger spring on the compression relief? It seems like it may have been getting sucked open a bit on the intake stroke whenever you closed the throttle.
Very nice, great success, been waiting for this day since discouvering your chanel, but watch out for the decompresser, cause you can see it beeing succed in in the video.
Amazing to finally see it run! Well done sir, congratulations on your success. Soon it will be cruising down the road with a very happy man in the seat. 🖖
Awesome! I just caught up on watching the whole series. When you said £300 for the aluminium to build the new head I nearly sh8t myself. I was shouting "Make one out of something cheap to check if the starter can beat the compression." Of course, you have done it now, but I have piece of nylon if you want it. About a foot across and eight inches thick. Fnaar fnaar. I drive all over the place, frequently near Derby, not a huge problem to get it nearer. (I can't fit in on my lathe and want it to go to a good home.) I will be watching future episodes, just say if you want it, I'm known as Grog.
Many years ago a old man told me about a single cylinder truck in Germany . This soon after the war . Said it was chugging up a hill carrying a load of wood .
Forever and ever Even growing up when I was like 12 yrs old I would look for videos of one of these running. Absolutely awesome what you guys have done and it sounds amazing. The Napier sabre engine is artwork always found it amazing how much power it truly could make. Very very cool beyond cool. Subscribed it's so cool.
Well done Mark and the crew. 🎉 Great achievement! Sounds a bit like an old two stroke 😝 just now but I’m sure it will be purring in no time. Like I say, brilliant results and very inspiring. See you on the road real soon bud 👏🤘
Some seventy years ago -late 1950's / early 1960's I was working in the ERD [ Engine Research Dept ] Patchway works of the then Bristol Aero Engines Limited. We used to run single cylinder sleve valve test engines. Hercules or Centaurus size pots, they ran as far as I can recall with a heavy flywheel. I think this motorcycle application may have had a crankcase etc from one of these units. A sleeve valve crank mechanism would have to be involved. I reckon it would jump up and down a bit without a well balanced crankshaft and maybe a flywheel as well. We ran many separate parts of the whole engines to research and hopefully improve each units performance both piston and jet engines. Piston engine research was just about finished when I was assigned to the ERD.
@@philiphicks9656 interesting! This is our own design, but I'd like to see any old photos of the single cylinder test units. Especially any power graphs - I don't suppose you have any? Our flywheels are 50kg.
Excellent I love this build 👍👍👍👍 I would beef up the engine mounts..you can see the engine moving in and on its mounts.. vibration will break lots of things...!
