Author Topic: a very small 4 stroke engine : 1.35cm3  (Read 10535 times)

Online steamer

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #60 on: September 14, 2021, 01:55:22 AM »
Oh what a sweet little engine!   I always like to see our engines doing something.    Great job Zephyrin!!! :praise2:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Zephyrin

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #61 on: October 08, 2021, 08:33:21 AM »
Thanks for the appreciations, a good nudge for the next project!

last Sunday at my club i ran my little loco among the live steam trains, the first real meeting for over a year, it was really nice!
a pal made a nice video of this great day, and you can see my loco at the beginning of the film, just to show how much fun we had!

i'm really so pleased of its operation that I'm afraid I've left the live steam engine for good for my next loco project!

<a href="https://www.youtube.com/watch?v=EBCrCk04Baw" target="_blank">http://www.youtube.com/watch?v=EBCrCk04Baw</a>

Offline gbritnell

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #62 on: October 08, 2021, 12:30:37 PM »
Congratulations!  You did a truly outstanding job on both the engine and locomotive!
Talent unshared is talent wasted.

Offline propforward

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #63 on: October 08, 2021, 01:19:28 PM »
That's a fantastic engine - it's delightful to see it running around the track.
Stuart

Forging ahead regardless.

Offline Johnmcc69

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #64 on: October 08, 2021, 04:37:31 PM »
 :ThumbsUp:
 Some VERY nice models there!
 I'm looking forward to what you come up with next,

 John

Offline scc

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #65 on: October 08, 2021, 09:17:02 PM »
Lovely engine and loco, a great runner!  Many Congrats :cheers:       Terry

Offline Zephyrin

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #66 on: October 09, 2021, 11:26:21 AM »
thanks for the appreciations, so welcome from engine builders !
As everyone knows, when everything works as expected, it seems so simple and easy to do, and yet, phew!!

I wonder actually if such a small engine (or a triffle larger) would be able to drive an electrical generator, powerful enough for electrical traction, more akin to a large main line diesel electric loco...
a few interesting tests to perform in the weeks to come...

Offline MJM460

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #67 on: October 09, 2021, 12:14:05 PM »
Hi Zephyrin, A genuine diesel electric transmission would be impressive, even if with a spark ignition.  I hope you will post your testing to develop the system.  It will offer many useful control options that are no so easy with direct engine drive.

It will be interesting to see what you select for the generator as well as the motor.

MJM460



The more I learn, the more I find that I still have to learn!

Offline Admiral_dk

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #68 on: October 09, 2021, 07:24:54 PM »
I seem to remember seeing a model loco with a .40 OS four stroke connected to a generator, that supplied the electric permanent motors on the axles - all RC controlled.
He had originally planned a multi cylinder diesel (with all the problems Roger can tell you about), but realized that the OS didn't sound far off the planned at the right RPM, with a special muffler. Another reason was that he was not left with much available space inside the finished Loco.

I don't think that I have that magazine anymore ....

Offline Zephyrin

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #69 on: October 10, 2021, 08:24:17 AM »
At the moment it is just brain rummaging on the feasibility...
I have to look at other attempts successful or not !

Quote
Another reason was that he was not left with much available space inside the finished Loco.
I'm ready to understand this point !
tiny engines become huge as soon as we put them into the loco frame !


Offline Roger B

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #70 on: October 10, 2021, 09:59:29 AM »
My 3cc engine will give 15-18w at fairly high speed. It may do better with a better matched generator but I think that is more than enough to move a locomotive.

Many years ago Robert Symes-Shutzmann built a Hymec based G1 diesel hydraulic powered by a Taplin twin and also a diesel electric based on a British Type 4.

I met him at an exhibition and saw the 'Symec' but unfortunately he had just hydraulic locked it and broken the crankshaft (he used an electric drill for starting) so I didn't see it running  :(
Best regards

Roger

Offline Roger B

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #71 on: October 10, 2021, 11:01:41 AM »
This is his Class 47 starting and running (around 3mins in).

<a href="https://www.youtube.com/watch?v=0_IHBZkuDWk" target="_blank">http://www.youtube.com/watch?v=0_IHBZkuDWk</a>



Best regards

Roger

Offline Zephyrin

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Re: a very small 4 stroke engine : 1.35cm3
« Reply #72 on: October 12, 2021, 02:53:37 PM »
Thanks for the input Roger,
And on the last min of the video, I’m impressed by the way this model engineer domesticated the taplin twin, really amazing. 
I looked further on the internet and gathered about half a dozen of similar tests, very successful achievements of diesel-electric traction on 45mm track, either in scale G (1 / 22.5) or G1 (1/32), all based on large sized "glow" engines with their noise and smoke problems that make these locos difficult to run in a club beyond a brief demo...
and in fact this "nitro-electric" traction does not correspond to what I imagined, too much sound and fury!
I'm not going to rush and will somewhat amend the project !

 

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