Is the Chinese 4 cylinder vintage HOLT model H75 VERY good quality?
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- เผยแพร่เมื่อ 6 ก.ย. 2024
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Well, yes I'd say H75 superb. It's their top model. Design, package, concept, completeness all near perfect: The model should spin counter clockwise...but radiator, water pump, governor all work; base is good looking, strong and complete with ignition; construction is mainly by perfect, tiny castings and all machining is superb.
Assembly also nearly perfect. Valve pressures all excellent, all nuts done up tight, but should use sealer as well as the rubber rings that seal the cylinders in the heads - many people get a leak, I did.
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this model is cheap and tiny 4-stroke gas model, 4 cylinder model of an early USA petrol engine for the HOLT crawler. engine suitable for running on your desktop or table! Available from Stirlingkit.com and Aliexpress for around US$800 to $1500
run and review of characteristics Keywords: vintage model engine, Holt H75, similar hit and miss. hit and miss review. hit and miss engine review.
Check out my other engine videos: / thomaspcgur. .
Enjoy!
Other vids: / thomaspcgur. .
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Thomas PCGuru ENGINES
Guys much as I don't mind custom making micro sockets, if anyone can tell me where to get a micro socket set I'd appreciate it as my normally good Googling skills failed to find any for sale...y'know Jin should offer a Microcosm tool kit for sale, micro electric screwdriver tool, bunch of micro heads, micro socket set, flywheel puller, mini spark plug remover suits the Lanz tractors etc.
Jin 我的朋友整理了一个工具包！
提供出售的 Microcosm 工具套件、微型电动螺丝刀工具、一组微型头、微型套筒套件、飞轮拉拔器、适用于 Lanz 拖拉机的迷你火花塞拆卸器等
Aliexpress must have a set. I'm looking to get a complete set myself . They have a 180 pieces or even more kits
@@simplefact4u I looked thru them really closely and can only find 4mm maybe one with a 3,5mm socket. Gimme a link if you find one Binnie
Look up Wiha miniature nut driver set, as told to me by a commenter here :)
Listening to the background noise, I understand your interest in these lil' engines...😂👍
I am just running one of Jin's recent 1/5 scale harleys with big chrome exhause. Sound is AMAZING but my microphone doesn't do it justice. Vid soon!!
"Nuts removal: ...not as traumatic as my cats led me to believe" that's comedy gold right there :)
Just got mine this week too. Impressive engine and love running it. I replaced the sparks with RCEXL ones as they have stronger spark and consistent. Took the exhaust to check the cylinders combustion, and two needed vavle adjusting. I put coolant mixed with water as water alone will rust the bearing inside.
Mine doesn't leak. It came with upgraded cylinder as they advised. Probably thicker orings
Nice one Binnie. We waited and got them at a good price...and probably the issues ironed out too. The quality of the machining is outstanding and so are all the tiny castings. I'll look into the RCEXL plugs. Yeah I'm using coolant mix too :) Yes like the idea of checking each cylinder by watching each one's exhaust too. Great ideas THX!!!!
Nice to see that your Engine Running!My H75 have a lot of Problems.The Valves not Correct and the Ignition Fails!To get good Comperssion i use 11,5x1mm O-Rings FKM Type.
On Top from the Carburator the Littel Screw is to Adjust the Low Speed!
Despite being "PC Guru" I am not "Engine Guru" I was suspecting the top screw controls bottom end. Will have another go tomorrow. THANKS!!! GREAT INFO!!!!
Look up Wiha miniature nut driver set. I own a set and they are awesome. 1.5mm to 4mm
doing that now...please hold, caller....
...They look perfect!! U da man. ...these Chinese models are all Metric, right?
@@ThomasPCGuruENGINES
Yes sir. Everything is metric. The set includes 1.5mm - 4mm; are use every single one in that set for my miniature engines, and they are excellent quality. You will love them.
Ima gonna get me a set of those and do a review :)
@@ThomasPCGuruENGINES awesome 😊🤙
Beautiful engine Thomas, thank you
My pleasure Blair
Excellent! Would have been nice to get a better look at the heads. Especially the combustion chamber. Also, what kind of rings are on the pistons?
Great suggestion! Rings are the green viton. Supposedly a replaceable part but I've never needed to on any Microcosm engines. Every Microcosm engine comes with a pile of spares