Retrol HM-01 Hit & Miss Engine - Gas Powered Logging Donkey

[@stuartthurstan]

What an amazing model. Absolutely wonderful!

[@williamburgess4732]

A beautiful job, thanks for the reply.

[@DickHolst]

Schitterend Loek! Hartelijke groeten, Dick.

[@rEdf196]

I like that tiny radiator and water pump setup , I acquired my new HM-1 over a month ago and I do notice the head and cylinder hopper gets awfully hot after a lengthy run. I have concerns it might wear out the piston O-rings frequently. I do want to make, or find info on a cooling setup to aid in keeping the HM-1 a bit cooler.

[@DePuffendeSchoorsteen]

Hi. The most important thing is to add oil lubrication from a two-stroke to four-stroke petrol! I replaced the original rubber piston O-ring with a pneumatic O-ring. This is more resistant to higher temperatures and is more wear-resistant. The cylinder head always gets warm to hot, just like the bottom of the cylinder. This is normal, the water may become warm as a result. The water pump and radiator provide the cooling system with a larger cooling surface. In addition, it is also a nicer sight because more parts move. Regards, Loek.

[@fabrizioviscardi40]

Fantastic machine! Cheers Fabrizio - like 7

[@MrBillgiles]

Nice to see a model working under load.

[@paulhorn2665]

Thats a nice model!

[@BKB-Henry]

Schön gebaut! Grüße, Henry

[@ThomasPCGuruENGINES]

Very nice video and enginework, my friend :) from New Zealand

[@DePuffendeSchoorsteen]

Hi Thomas. Thank you for your response. I have also been following you on KZbin because you are also busy with the machines. Nice to see someone doing this too. It remains a fun hobby! Regards, Loek.

[@FrancoisMarieMeunier]

very nice work, congratulations ! It would be easy to calculate the power of the winch by measuring the time required to lift a known weight to a measured height! ie power (W) = Weight (kg) x 9.81 x height (m) / time (s)

[@billrey8221]

That is pretty cool! Thanks for posting! Did you do all of the work yourself?

[@DePuffendeSchoorsteen]

Yep🙂

[@scottbaldridge1092]

that is SO COOL!

[@williamburgess4732]

How do I get the logging Donkey? I have the HM-01 Engine and skid.

[@DePuffendeSchoorsteen]

Hi. I made this donkey myself, so it is not for sale.

[@jws1503]

👍👍👍

[@anthonygasperino7283]

i need to ask a question i lost all the ball bearings for the crankshaft of my RETROL = RM=HM =01 can anyone help me tried purchased from StarLing and they did not help if someone can help please

[@DePuffendeSchoorsteen]

Hi. I do have a few ball bearings. I believe you need about 4 or 5? Send me an email, okay? Regards, Loek.

[@DePuffendeSchoorsteen]

Or look on ebay - Kugellager Kugeln Kohlenstoffstahl Vollkugeln Stahlkugeln 1mm 2mm 2.5mm 3mm-20mm : DIY EASY SHOP. Succes!

[@DePuffendeSchoorsteen]

The ball bearings are 2mm by the way.... Greetings.