3cc Diesel - My first ICE

[seagar]

Congratulations on a great build and comentary.I am an old model aero team racer and raced diesel engines for years .The fuel mix I used was 48% Kero.30%either 20% castor oil nd 2% amel nitrate .

Have fun , Ian.

 

[T70MkIII]

You're the man, Bob! Great job. I can't wait to see what's next...

 

[max corrigan]

Good work Bob sounds great i gotta try something like that one day, yer overalls came out good too
regards Max..........

 

[kustomkb]

Fanastic engine!, and thread!

Great work!

 

[NickG]

Bob that is fantastic! How fast do you reckon it is running? About 9000rpm?!

 

[Maryak]

Thanks Guys, :bow: :bow:

I am so thrilled it even ran

Glad you like the close up of my overalls, I didn't realise at first that I was standing in front of the camera. :

Today will be a tweak day.

I have a rev counter so will try and find the speed.

Best Regards
Bob

 

[GailInNM]

Bob,
In the US at least, rule of thumb means non precise way of checking or evaluating things. On small, 1/2 to 2 cc CI engines, my rule of thumb for contra piston fit is literally a rule of thumb. If I can push the contra piston into position with my thumb, then the fit is too loose.

From your operating setting, if you back the compression screw off a half turn or so and then turn the prop over smartly while holding on to the prop, as opposed to flipping it, you should feel when the contra piston breaks free and moves. At the same time that happens, you can hear the click as the contra piston breaks loose and strikes the compression screw. This is difficult to describe, but once you have done it once you will know it forever.

Ian,
If Bob is following my recommendation for fuel mix, he is running about 35 percent oil. While the amount of oil you were using is good for high performance engines that have front rotary valve and ball bearings, it is not enough for a sideport induction engine with sleeve bearings. I know his is really a rearport, but somehow they are always referred to as sideport, at least on this side of the pond. It is difficlult to get enough oil on the crankshaft sleeve bearing. On front rotary sleeve bearing, the percentage of oil can be reduced some as the crankshaft bearing is getting fresh oil all the time. If ball races are used, then the oil can be reduced even more.

I also recommended that he not bother with the amel nitrate or other ignition promoter as, in my opinion, it does very little at under 10k RPM, although it may make starting a little easier. At higher RPM it has very definite effects on smoothing out an engine. It is also difficult to source any of the suitable dopes in the USA with the current concerns about explosives here. I suspect that it is not much different in most of the world.

Gail in NM,USA

 

[seagar]

Gail I will mind my own business in future.

Ian

 

[GailInNM]

Ian,
I was not in anyway meaning to offend you. I am sure that Bob appreciated your comments, and they are welcomed. I am no expert, just someone who has found out what works for me, just as you know what works for you. Each engine is different and there is a good possibility that Bob will end up running something different than what either one of us recommend.

Bob sent me a PM asking for a recommendation and I had responded by PM with what I thought would be a safe starter fuel to get his engine running. Part of the tweaking process is playing with fuel and knowing what others are doing is a big help. Looking back, those PMs probably should have been part of the thread, and a lot of that information was in my last post.

If I worded things wrong, please accept my apologies. I meant no ill will.

Gail in NM,USA

 

[CrewCab]

Bob, I don't log in for a few hours and your thread gets 3 new pages

............. OK I know it's mi' age and I'm getting slower

Firstly ............ blimey it's a fast little beggar ;D

Secondly ............. Very well done Sir ....... Be very proud, you have every right, it's a cracking runner

Thirdly ........... thank you for sharing the pictures of your butt ............ : .......... just what we all needed ;D ;D



Congrat's Bob ......... top class work .............. as ever :bow:


CC

 

[Maryak]

Seagar and Gail,

Thank you both for the time you have taken and the various options you have given me for fuels and fixes :bow: :bow:

Seagar,

I know Gail quite well from PM's and the other side of our forum. Please be assured the last thing he would want is to offend anybody.

Best Regards to you both
Bob

 

[Maryak]

Thirdly ........... thank you for sharing the pictures of your butt ............ : .......... just what we all needed ;D ;D

CC, Thanks for all of your comments, the above was by far the most appropriate

Yes it proves I am a Photoklutz. To present my best view to the camera once, maybe, butt 3 times : : : what more can I say. ???

Best Regards
Bob

 

[Maryak]

No tweaking today and probably tomorrow due to tanks and electrical selections.

Best Regards
Bob

 

[Metal Mickey]

Bob, what can I say. Superb! Yes there are many things people can add to the running BUT IT RUNS and at speed so that's brilliant! I am so impressed that I would like to add a link from my website to your video and this threads link. Would you have any objection?

Once again, well done......what are you going to use it for, anything? Or is it built just for the hell of it?
:bow: :bow: :bow: :bow: :bow: :bow: :bow: :bow:

 

[Maryak]

Mike,

Thank you for your very kind words. :bow:

I am flattered

that you want to link it to your website and of course I am more than happy for you to do so.

I started this engine in the main because I could not afford the copper to build a boiler for my mill engine. I am afraid that for me to build a steam engine and not run it with steam leaves me with a feeling of an incomplete project.

That's just me and is NOT intended in any way to detract from some of the marvellous steam engines which have been built with great accuracy and run on very small air pressures and at very low revs.

So not only is it my 1st IC engine but it is, (in my mind), my 1st completed model project.

During the build process I have become hooked on model IC engines, (12" : 1ft I still prefer steam).

That was a very long winded way of saying I built it to see if I could.

Without the support of this forum and its members, I doubt I would have finished or had any record of what I did and why.

Thanks to all and to all :bow:

Best Regards
Bob

 

[wareagle]

Bob, nothing more I really can add to the comments already made. A big hearty congrats for a job well done both on the engine as well as documenting the journey and taking all of us along with you!!! :bow: :bow: :bow:

 

[Maryak]

W/E,

As one of the mainstays of my support team from the very beginning, A HEARTFELT THANKS. :bow:

Best Regards
Bob

 

[Philjoe5]

Bob,
I get your thinking on the steam engines. I've been contemplating a boiler build, but, I also have access to steam lines at the Kinzers Rough & Tumble Museum right near my house. I go to all the model engine shows there so I can test one of my engines on steam before I go through the effort of boiler making. All I need to do is build a displacement oiler and I'm good to go. I know at some point I'll get the experience needed to build an IC engine but that's another one of those future projects.

Meanwhile, you taught me a lot about building an IC engine and I also finally learned the art of using the emoticon successfully

Cheers,
Phil

 

[CrewCab]

To present my best view to the camera once, maybe, butt 3 times : : : what more can I say. ???

Bob,
Your sense of humour coupled with your obvious engineering skill ............. plus ........ the willingness to share the "bloopers" as well as the good times are what has made this thread what it is ............ an outstanding success ......... and don't just take my word 8) ........ look at the stat's for yourself


.. >>Click Here<<


Topics by views ........ No: 4
Topics by replies ....... No: 1

and in very good company I wood add :bow: ................although .............. how you are going to beat this one I'm not sure ......... but I'm already looking forward to it ;D

CC :bow:

 

[Maryak]

Phil and Dave,

THANKS :bow:

Best Regards
Bob