1947 Frog 100 Mk1 Running Sweet - So what was the Problem??

1947 Frog 100 Mk1 Running Sweet - So what was the Problem?? - English Diesel Engines

Рет қаралды 1,391

Mark Robinson

Күн бұрын

Пікірлер: 31

@mauricedyer6842 Ай бұрын

Well done . What a joyous sound. Happy days indeed.

@MarkRobinson555 Ай бұрын

@@mauricedyer6842 Thank you pleased you enjoyed it 😀

@nicmost3044 Ай бұрын

lovely gift from somebody. nice to see it run

@MarkRobinson555 Ай бұрын

@@nicmost3044 Thanks, pleased you enjoyed it 😀

@NathanWaldock Ай бұрын

Can anyone let me know what this emoji means????

@terryblackman6217 Ай бұрын

Who would have thought that such a small bend in the con rod would make all that difference. Well found.

@MarkRobinson555 Ай бұрын

Thanks Terry, so nice to get it running 😀

@Darren.n.RCvids Ай бұрын

Lovely to see these old engines running again, great video and channel.

@MarkRobinson555 Ай бұрын

@@Darren.n.RCvids thank you very much, greatly appreciated 😀

@RFW423 Ай бұрын

I appreciate your videos Mark - a great acknowledgement to the hobby. The conrod not only looked bent but the small end hole looks ovalated so maybe make a new rod? When a diesel dies off as in the video it's definitley getting hot and over compressed so backing off the compresion will allow it to not only pick up but cool a little too. Usually when a diesel is running out of fuel the revs will increase and it wil burp a little - you can check this out when running by nipping the fuel tube. Keep up the great work 👍👍

@MarkRobinson555 Ай бұрын

Thanks for the comment, its appreciated. It does look like the rod is worn in the picture, but that is just an illusion created by the relief around the gudgeon pin hole, it's actually has very little wear. I understand what you are saying about the engine dying off when hot and over compressed, but on previous runs, and there were quite a few, when it got to this point gently reducing the compression only caused it to miss fire, but opening the needle helped in maintaining the revs.

@Petra-ix3bh Ай бұрын

Well done Mark, it's a great feeling getting an old diesel running right! BTW looks cold there in the UK...

@MarkRobinson555 Ай бұрын

Yes, absolutely ready does feel good, weather wasn't too bad yesterday when I filmed this, it was about 5 degC, but today it's a hard frost! Thanks for the comment 😀

@sidecarbod1441 Ай бұрын

I had the same issue with a Merlin DC engine 40 years ago, the conrod was bend, the engine would not even start, it ran well after I straightened it.

@MarkRobinson555 Ай бұрын

Good to hear, thanks for the comment

@5695q Ай бұрын

Seems to be a bit better on the run. Looking at the picture of the rod, it looks like the pin holes are a bit worn, maybe fashion a new rod with the holes fitted to the pins and see if it runs better still.

@MarkRobinson555 Ай бұрын

Thanks for the comment, it does look like the rod is worn in the picture, but that is just an illusion created by the relief around the gudgeon pin hole, it's actually has very little wear.

@Adrian-up4hk Ай бұрын

Having many years experience with diesels I think that it wasn’t fuel shortage but perhaps over compression due to motor getting hotter and / or running rich, see the smoke. And the why it stopped was not fuel shortage, they usually speed as they go lean, it was more like over compression. I was expecting you to slacken it off or lean it out before some damage was done, bent Conroe . Much impressed by your straightening out but more so on you making up a needle valve assembly, how about a video on that, I’m sure many people would be interested. Thanks despite my comments I really appreciate your video.

@MarkRobinson555 Ай бұрын

Hi, thanks very much for the comment, it's greatly appreciated. Really pleased you enjoy the videos.

@Alanfarmer86 Ай бұрын

Model engines are a hobby in itself. It really does bring joy when a finicky engine finally runs well. Well done Mark. Cheers

@MarkRobinson555 Ай бұрын

Thanks very much, absolutely couldn't agree more 😀

@NathanWaldock Ай бұрын

Glad ya got her running mark ,well done on enngeering parts

@MarkRobinson555 Ай бұрын

@@NathanWaldock Thank you very much, appreciated 😀

@ralphjohnson4041 Ай бұрын

Sounded overcompressed at the end of that run.

@MarkRobinson555 Ай бұрын

@@ralphjohnson4041 Yes it does, but it was because it was struggling to draw fuel from the bottom of the tank as it's quite a distance. On previous runs I ha thought this and decompress it but that just made it worse.