Engines > Restoration of Model Engines

One lung FM Z 1 1/2 HP

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Bluechip:

--- Quote from: gipetto on November 16, 2023, 02:10:58 PM ---If it were me i think i'd try adapt a motorbike carb to it. Honda 50cc are about the smallest that i know of, they are 4 hp, so they should be a good match.

--- End quote ---

My Mantis cultivator has a Honda 22cc OHC engine.  :headscratch: Maybe too small ?


https://www.ebay.co.uk/itm/175659641621?chn=ps&norover=1&mkevt=1&mkrid=710-153316-527457-8&mkcid=2&itemid=175659641621&targetid=4584757337008490&device=c&mktype=&googleloc=&poi=&campaignid=431353847&mkgroupid=1298523655396099&rlsatarget=pla-4584757337008490&abcId=9301942&merchantid=87779&msclkid=b28ce512d43017a91e818044e67cec4f

D.


Geo46:
Thanks, I’ll check it out
Geo46🇺🇸

Alyn Foundry:
Hi.
I rallied several of these engines years ago. One of which was missing the carburettor. I made patterns and castings for it.

Please see attached.

Cheers Graham.

Alyn Foundry:
Not sure whether you missed my previous post….

Originally these engines were dual fuel. The carburettor has a small chamber that is filled with Petrol/Gasoline and an inbuilt needle valve to adjust the mixture. Once running the engine would start to get hot enough to transfer to the main fuel, Paraffin/Kerosene which was stored in a large rectangular tank carried between the skids. The Venturi area has a front cover that has a spring loaded valve, effectively acting as a choke device.

I have a set of Iron castings, unmachined, but I don’t think the original style carburettor would be suitable for what appears to be a mobile unit.

 :cheers:  Graham.

Geo46:
Thanks for the reply, I am well aware of the original mixers, seems like you are more capable then we are, someone retro fitted this with a Flo Jet, I believe it was to get better throttle control as this was used on a small locomotive, my main goal now is to find a carb other than Flo Jet even if it means making a new manifold, not sure how to size a carb.

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