Pros and cons of Yamasaki Skorion
Advantages
- Abundance of tuning. For example, the 50cc Yamasaki Scorpion YM50 8A, like its 125cc brother, can be easily converted into a 150cc bike. This, of course, will not turn them into a rocket, but their agility will noticeably increase.
- Low price. It won’t be easy to find something cheaper, but a used Scorpio can even be purchased for several tens of thousands of rubles.
- Versatility of spare parts and consumables. Almost everything you need can be picked up in any store that sells spare parts for Chinese scooters and motorcycles.
- Weight. Yamasaki Scoprion 3 or 4 weighs only about 100 kg, like their previous modifications. Physically, handling a moped is very easy.
Flaws
- Build quality. There are the most complaints about it - even on new mopeds, something regularly unscrews and falls off. To be fair, we note that this depends on the integrity of the particular dealer. Some of them still fine-tune the equipment before handing it over to the buyer.
- Too archaic transmission. KPP-4 in the 21st century - are you serious?
- Weak brakes. There is nothing to say about the rear “drum”, but even the front disc brake is of little use.
- Uncomfortable landing. The moped is clearly designed for compact Chinese, and not for physically larger Europeans.
- Extremely weak light from the headlight. On unlit roads at night you feel extremely insecure on the Yamasaki Scorpion, because the power of the headlight is comparable to that of a flashlight.
What engine does the yamasaki scorpion have?
The author has never sat on any vehicle with a motor other than his own! So, the 2022 season ended with the engine packed and the bike in the trunk. Probably the logical solution would be to save some money and buy a category A license? But... I didn’t do that)
But we know that it’s also in the head! The head was thoroughly redesigned. And when I say redesigned, I really mean redesigned) The cylinder head was sawed/built up by comrade Nebero at the stand)! Channels 21/18 (+3mm), valves 24/21 (+1 to the drain), 4 chamfers on the inlet, 3 on the exhaust, the drain channel from the 70cc cylinder head was completely reprofiled (110 was terribly blown, worse than the 70, a fellow tuner actually recommended it throw it away)
The body of the intake channel was built up along the lower edge with a special compound; the channel is not round for working with a side intake (for purging, but there is no other way to fit a large carb with a normal length of the manifold). Photographs of the heads from takegawa head r were taken as a basis, and this is, for a minute, 17 forces from the same volume (stock 106, by the way, gives about 7 forces). The head is blown from 1mm to 10.5 (stock springs are limited) much better than stock, it won’t reach 20 horses, but such a cylinder head will let 17 through itself!
Curve channel specifically for the side position of the carb About the result
If anyone has a free milling machine, then I am ready to pay for the manufacture of the shaft according to my drawings!)
45, and there is an easy way to do this by simply increasing the length of the modulator. The ignition works there very simply - the beginning of the modulator curtain is position XX = 8 degrees. The end is the optimal position for 3500 rpm = 26. But since There are only two positions, then by shifting the gearbox for rpm, there is a high chance of running into detonation in the middle range (What the hell did you want from 45 degrees at 4k rpm)? The option with a block capable of dispensing UOS not linearly, by analogy with injection cards, I did not have time to finish. But I am 200% sure that this one action would give an increase of 15-20% to the current figures.
(I’d like to screw a phase shifter here... If I had it, I could start from the second one, and in gymkhana the moped wouldn’t stall on the dead ends, we should invent it, or what?)
I tried to balance my knee using a book I found on the Internet, if I’m not mistaken the coefficient was 0.7. Result? But it’s not there... Either the calculations are for a vertical motor and not a horizontal one, or I’m a fool, but the skis don’t work! The vibration disappears completely somewhere around 6500 (range ± 200 rpm!), or when the gas is released.
Total: Crankshaft-1500 CPG-1500 modification of cylinder head-500 (sent back and forth) split gear-0 Carburetor-1200 Intake tract-250 Time spent - about 20 man hours Yes, for another 100 bucks I definitely bought happiness) And as a result , at least QUADURING power at the rear wheel and a crazy smile all season long)! Is it possible to make a motorcycle out of a moped? - NO Is it possible to make a 50k go around Chinese 150s? - YES If you have an ignition control unit, you can compete with the 250, they are made painfully crookedly!
As a result, Gadzilla traveled more than 3k kilometers, and in full health went to winter quarters, and his creator thought that the equivalent of the Chinese 200k was already too small for him and... Is it possible to do something about this?
Source
The story of the purchase of Gadzilla, which is the name of my green dragon, definitely deserves mention!
So, December 2016. It’s -32 outside! And I have no ideas about how to bring this miracle through the cold and 40 kilometers) There was only one idea in my head - a gazelle is not an option, I have no knowledge of trucks, which means a MOTO tow truck. In the middle of winter The search was long and unproductive. With difficulty, but I managed to find a link to the motorcycle workshop OWNER on VK! which agreed to help me (Motorcycle Brotherhood? I was pleasantly surprised by this!) So, I remind you. December. -32. Meeting point with the seller and. blue Q7 (more than 4 million trees.) WHAT? WHERE? HOW*? In all seriousness. An incredibly kind person came to help me. The guy himself!, refusing my help! threw the motorcycle onto a special trailer. For about 10 minutes, under the howling snowstorm, I fiddled with the frozen belts. I took it off myself! and helped drag him through the snowdrifts into the garage. He drove me more than 40 kilometers in his awesome car, gave me a lot of advice about motorcycle equipment and behavior on the road, and in the end charged me 1,000 rubles for ALL OF THIS! I’m very sorry, I never remembered your name, you are the kindest person on the planet, but I am still immensely grateful to you!
About the moped Before you is an abundance of Chinese plastic, under which hides a wonderful 50cc monster with a power of as much as 2 horses. This miracle is called Yamasaki Scorpion, although this is just the name of the importer, and the Chinese have a bunch of names. Essentially, a moped is like a moped. Everything you can buy in a store now has the same Chinese motor. A copy of the engine of the legendary H. cub, the circulation of which has already exceeded 100 million! things. The first lap made along the pits captivated me a little more than completely.) I had never in my life sat behind the wheel of a two-wheeler with a motor, but in that very second I was captivated. Is it true. It's like a snowboard that you can ride wherever you want. Like a bmx that can take you anywhere in the city. It’s as if a 3-year-old is being pushed in the back by a folder in the park, and you’re flying forward overtaking these pathetic 4-year-old losers in their Olympics)!
About the ride A little later it turned out that two crazy horses - ready to rush you through space - this is fucked up like a LITTLE! A 100 kilogram motorcycle (and in size it is exactly that) into which the Chinese stuffed a 50 cc heart - not a very capable child) Despite the presence of 4 demonic gears and a cutoff of 8500! he travels about 50 kilometers per hour. A very long time. For a very long time. He tries to move them for SOOO long, and if a fly hits you at such a speed, then you are immediately guaranteed to lose 7 kilometers at maximum speed. And if the road goes up one centimeter, then your 4th gear will very quickly turn into 3rd and will give you only 35 km/year)!
About tuning in 2017 But I watched the movie Taxi? I have already collected both vegetable and quite evil motors before. I know quite a lot about combustion, gas dynamics and other hats, what's going on in the engine? Therefore, using a 10mm wrench, I quickly removed the head. I sawed down the intake duct, slightly sharpened the valve casting, holding it in a drill, solemnly replaced the gaskets and went to break in the whole thing. The run-in took, hmm, 15 minutes)? I got tired of it pretty quickly, and there was nothing to break in there. all the parts were in their places, and the chewed body of the cylinder head would in no way affect the wear of anything. The moped is 100% ALIVE. The red zone climbed up to 9500, the thrust shifted from 4 to 6 thousand, turning the engine became much more pleasant, but this did not save the situation))) I was still a hindrance for the minibus drivers. Cyclists. And grannies hurrying somewhere. All of them were capable of overtaking me in the race from traffic light to traffic light, but I was happy)
End of summer 17th. 17 has always gone down in history as a year of change) And 2022 was no exception. During that summer, I drove a little more than 500 kilometers, mostly along neighboring streets and not too far from the garage and gas stations. The dynamics of the moped no longer pleased me at all - Objectively, it was a bit fat) My night adventure was a step towards its evolutionary form. Having stayed late in the garage, collecting someone else's toy, I was left with no options for moving. And boldly jumping onto the flame-spitting gadzilla, I headed towards the house. Only the little bastard thought differently that day, climbing onto the bridge along an empty road, and trying to squeeze out an insane speed of 45 kilometers per hour with all his strength, I heard the sound of its end. A metallic clang - the ringing of metal, the wiring going crazy and the flames from the intake and exhaust made me think about its demise... The motor took me exactly to the highest point of decoupling and... exploded... A huge generator rotor was torn off - serving as a flywheel on this motor and at the same time a mark for ignition. It crushed the circuit board and generator coils, and devoured the thread on the knee. I don’t know whether the Chinese tightened this nut so poorly, whether someone climbed into it after, or whether it had to be tightened upon purchase, but it was this (as well as the huge trunk of the Discovery) that sent me from season 17 to season 18, where, believe me , the story already had a happy ending PS no, I still ride a moped)!
Yamasaki Scorpio motorcycles, life of a salesman
Good day everyone, I haven’t written for a long time, I was on vacation. In this article I want to talk about the arrival of Yamasaki Scorpio motorcycles. And I want to hear your opinion.
These devices were brought to the store for us, and we were not much shocked.
Not only do they come as a designer set, but these motorcycles are sold as a YAMASAKI SCORPION car kit.
So these devices use
50cc piston engines. When customers find out about this, they arrive a little in shock, I just can’t understand why they couldn’t supply at least 110 piston ones. For example, mopeds like Alpha come, they cost fifty dollars and in addition they give hundredths of piston ones. The price tag for Yamasaki is 70,000 rubles. Of course, clients don’t want fifty-kopeck devices for that kind of money.
I think the price tag is too high, the price of such a device is no more than
45,000 rubles. because if you set at least 110 - 125 cc. The piston also needs to be changed and the head.
Source
Is the game worth the candle?
Is the game worth the candle?
27 Sep 2022, 11:28
Hello everyone!) Recently I became the proud owner of a two-wheeled horse (Yamasaki Scorpion 3 moped). So I’m ready to increase the cubic capacity (now it’s 72cc). There’s a lot of information on the Internet on how to switch from 50 to 72, from 72 to 110, etc. But there are very few reviews and comparisons of the “before and after” type, basically I start everything with these words: 50cc is not enough for you (72, 110, etc.) then I begin to describe in detail the procedure for increasing volume, and what happens after the transition and the feeling of increasing cubic capacity often remains behind the scenes. Since I’m not very versed in technology, I decided for myself that if I increase the cubic capacity, it will only be by replacing the entire engine, but that’s the question, is it worth it?! Calling the shops I found out this is what I found: Engine in Sat. 110cc 139FMB (152FMН) semi-automatic 4 front, the store offered 125cc Engine in Sat. 125cc 139FMB (152FMI) UNNUMBERED.
1. How will the speed dynamics change when setting 110 and 125? and will there be a noticeable difference between 72 and 110, 125? 2. The price of the issue is 17 thousand rubles, this is the price of the engine assembly (is it worth it?) 3. What does a numberless engine mean? 4. Comrades of the traffic police, how do they feel about engines 110 and 125 ? (after all, the 110 is even more or less like a 50cc, but the 125 didn’t seem like a 50cc at all to me, although I only saw it in pictures) 5. Are the 110 and 125cc also marked 50cc?
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PGO Comet 50 2008
| basic information | |
| Model | PGO Comet 50 |
| Year | 2008 |
| Type | Scooter |
| Rating | 56.1 out of 100. |
| Engine and transmission | |
| Volume | 49.00 ccm (2.99 cubic inches) |
| engine's type | Single cylinder, two-stroke |
| Compression | 6.8 |
| Fuel system | Carburettor |
| Cooling system | Air |
| Exhaust system | Euro 2 |
| Chassis, suspension, brakes, wheels | |
| Tires, front | 90/90-10 |
| Tires, rear | 90/90-10 |
| Brakes, front | Single disc |
| Brakes, rear | Expanding brake (drum brake) |
| Dimensions | |
| Weight, dry | 68.0 kg (149.9 pounds) |
| Height, full | 1,160 mm (45.7 inches) |
| Length, full | 1,670 mm (65.7 inches) |
| Width, full | 670 mm (26.4 inches) |
| Other characteristics | |
| Available colors | Silver/red, crystal/silver, silver/black |
| Comments | Taiwan made bike. |
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