Battle of the V-twins: 3 V-twin model engines run & compared
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- เผยแพร่เมื่อ 22 ต.ค. 2022
- These three are all Chinese commercial model engines you can buy from ebay or retailers.
Cison FG-VT9 9cc
Microcosm R28 4.3cc with carb float
Unbranded 90 degree V-twin vacuum engine flamelicker flammenfresser - วิทยาศาสตร์และเทคโนโลยี
I was really thinking about the new V twin and was excited to check out the carburetor. Thank you for another great video. 👍
That new Vtwin Harley is exquisite, but I've bought a lot lately and as they say Now for Something Completely Different. Getting an engine tomorrow, single cylinder, but BIG (quarter ton) and OLD (near 100 yrs) it will be fun.
Tweaks to the vacuum engine include keeping the cylinders in place with silicone sealant (not the included screws which deform the cylinders) and silicone heatsink compound in all joins plus extra heatsinks from old pcs, to help heat dissipate (overheating will stop many vacuum engines after a short while). Also careful setting up and flat-cut finishing file to flat moving surfaces, adjusting the valve springs with spacers, washers in the mechanism rtc etc.
Number 3 gir sure,Thomas!!
I really love your uploads, truly brilliant!
That might be stretching it, but i love your enthusiasm!
Nice to see how well microcosm V twins have got. I have R30 Panhead and R33B Evo on my channel as well 👌
Hey Engineman! Keep making vids. ...I was running my H75 today, it always starts and is always satisfying! Yeah the vtwins are a special lineup. Also Microcosm (Becoming OKM ?) srating to paint some models is a great move I think. Keep in touch man
@ThomasPCGuruENGINES Hey Thomas , thanks for your support! Their engines are brilliant . Yeah, a rebranding is on its way for their independent shop. Lots of awesome engines are on the horizon from them 😎👌
Great channel Thomas, love it !, never heard f a vacuum engine before ! thank you
Glad you enjoyed it. Welcome to the comments section - I like the sound of vacuum engines vs closed-system, stirling hot air engines
Wacko -Jacho !. Vac. motor very posh, brass twin temperamental and Pan head crazy baby. Thanks man. Dave
Right on! You bet Dave :)
#3 looks like a Harley "panhead" engine. My stepfather had a 1950 Harley with a panhead.
Yep that's the prototype for this model. I'd love to have a 50-100cc vtwin powered minibike for fun in the park...that might happen in the next year. Chinese manufacturers are just realising how much us westerners love 45 degree v twin 4 strokes, hopefully one of the many minibike engine manufacturers will create a small v twin for us, eh? Actual Harley is a bit out of my price range and I'm an absolute beginner, probably safer hooning in my MX5
I got a R90S engine and it's been a real pain, but after disesting and rebuilding it, it works relatively decent. I found running on lighter fluid really helps because of low compression normal petrol octane is too high for this, especially with the weak ignition. Finding lighter fluid is not easy in NZ now but some dairies still sell them.
I have never heard anyone got the R90S to run decently, just frustration, so good on you. Is "Fuelite" lighter fluid too?? I had some "fuelite" from Bunnings which the engines ran happily on but gave it up because I read the octane is lower than petrol and this was when I only had hit-n-miss engines; I wanted biggest hit. (sidebar - It evaporates REALLY quickly. Perfect for evaporative carb - eg used it for their 1896 Benz project locally.)
I like an engine to go from "works ok" to "works perfect" rather than "pig" to "pig in lipstick" Cison v twin I'm looking at you here. That's probably a bit harsh, but I'm a bit over it...
@@ThomasPCGuruENGINES I think they are the same thing, zippo and likes of it work really good on R90s. It's been so frustrating to say the least. But I think I made it to run as close as to the real engine after it's warmed up. Had to make major mods to get it work like that. I think the high octane fuel is useful when the intake crossing hot surfaces, or the cylinders have very high compression. As each engine they make is different in design, assembly and quality, it is matter of trial for fuel.
cool little motors, when i was a kid we had a bunch of model airplane motors of different sizes that ran on a special fuel and had glow plugs we hooked up to a battery to get them started.
"Glow" engines are now called "nitro" engines as the fuel has added nitro for bang. On my channel is my 60-year old "diesel" aircraft engine running. God I loved that as a kid...
@@ThomasPCGuruENGINES my brother and i had motors sizes of .010, .020, .049 and a really big one that i think was .35 i think. we flew control line planes and free flight planes but as kids we could not afford r/c type planes and back in the early 60's were not very numerous with kids more like adults had them.
Best price and place to buy? Thanks
Hello thomas, I purchased a knuckle head v twin apart, my question is what cylinder is number 1 , on a full size motor it’s the back cylinder, but I’ve noticed that everyone starts the engines counter clockwise, I also can not find timing marks, am I missing something, any help would greatly be appreciated. Thank you
The ignition in these sparks both cylinders at the same time, but only one is compressed and fuelled. Then the other. Take a plug out or both and test it for spark a you turn the flywheel. there arent timing marks that ive found, use a toothpick in the sparkplug hole to feel tdc
Oil leak..haha, very realistic, love the Pan, they have a Shovel now too!
Great point! "Oil leak...very realistic" ha ha yeah...
All V-twin are nice.
Short and clear comment...and I agree.
Even the mini panhead models leak oil brand new lol
Yep and these V twins are not simple to take apart and reassemble with your own gaskets...
@@ThomasPCGuruENGINES Don't need to replace the gaskets. The engine leaks are apart of the experience
Yeah that is a fact
looks like its running backwards the gold one
What does ak mean ?
Context???
Dont you run them to ritsch?
Maybe, I'm having a hard time getting them running well
4% oil is all thats required for a better idle
I'd agree...I've never measured it properly in practise though...
Tune the carb but pretty sure the engine is bad
The Cison???