Do you believe a claim by Kymco of 33 hp from 299cc? :roflmao: :roflmao: :roflmao:
Introducing the Downtown 300i. “Kymco USA’s President Eric Bondy called it a ‘GSX-R, except it’s a scooter.’” :roflmao: :roflmao: :roflmao:
The article is about Kymco’s US models for 2010. The best line in the article: “The Quannon gets up to 45 mph as quickly as most cars (as long as they don’t know they’re racing you).”
Motorcycle Daily has never written a negative review, TMK. Call them “moto journo junket junkies”
33hp from 299cc yes. From a 4 stroke it’s doable, with the current restrictions on emissions it would be hard.
Is there any bike shops with dyno in Taipei or Taiwan at all?
The factory claims 24 hp @ 8000 rpm, but I’ve not seen a dyno plot.
The Zook DRZ400 engine was designed by Yoshimura, and produces about 33 hp in stock form, and there are plenty of dyno plots to confirm that. I don’t see how Kymco’s engine design skills can surpass those of Yoshimura.
[quote=“maunaloa”]Do you believe a claim by Kymco of 33 hp from 299cc? :roflmao: :roflmao: :roflmao:
Introducing the Downtown 300i. “Kymco USA’s President Eric Bondy called it a ‘GSX-R, except it’s a scooter.’” :roflmao: :roflmao: :roflmao:
The article is about Kymco’s US models for 2010. The best line in the article: “The Quannon gets up to 45 mph as quickly as most cars (as long as they don’t know they’re racing you).”
Motorcycle Daily has never written a negative review, TMK. Call them “moto journo junket junkies”[/quote]
The Kymco Downtown 300i has the new G5 Kymco engine. It’s specifications are: 298.9cc, max horsepower 32.78/8000 ps/rpm, max torque 24.5/6500 Nm/rpm. On a dyno run in Greece it performed 32ps on wheel on the first run and after 3 more runs it performed 31,3 ps on wheel. It can do 0-100 in 7,5 seconds, it reaches 140 km/h easily, 150 km/h with patience and can hit 160km/h in downhill.
Ummmm… No. Although, they do not have a record of publishing false claims AFAIK. When it’s too embarrassing, they usually don’t publish anything at all.
[quote=“sibi”][quote=“maunaloa”]Do you believe a claim by Kymco of 33 hp from 299cc? :roflmao: :roflmao: :roflmao:
Introducing the Downtown 300i. “Kymco USA’s President Eric Bondy called it a ‘GSX-R, except it’s a scooter.’” :roflmao: :roflmao: :roflmao:
The article is about Kymco’s US models for 2010. The best line in the article: “The Quannon gets up to 45 mph as quickly as most cars (as long as they don’t know they’re racing you).”
Motorcycle Daily has never written a negative review, TMK. Call them “moto journo junket junkies”[/quote]
The Kymco Downtown 300i has the new G5 Kymco engine. It’s specifications are: 298.9cc, max horsepower 32.78/8000 ps/rpm, max torque 24.5/6500 Nm/rpm. On a dyno run in Greece it performed 32ps on wheel on the first run and after 3 more runs it performed 31,3 ps on wheel. It can do 0-100 in 7,5 seconds, it reaches 140 km/h easily, 150 km/h with patience and can hit 160km/h in downhill.
Looking at the speedo im saying 20bhp, if it had over 30bhp it would fly to 100 not crawl like that!.
My Z-125 (272cc) is faster than that and weighs 130kg’s+
G5 kymco engine… hmm kymco make a scooter called a G5 which uses a larger GY6 engine with a 4 valve head, its EXACTLY a GY6 but its similar in dimensions at the bottom end and cvt.
That engine can be bored and stroked to 300cc+… i wonder.
[quote=“smellybumlove”][quote=“sibi”][quote=“maunaloa”]Do you believe a claim by Kymco of 33 hp from 299cc? :roflmao: :roflmao: :roflmao:
Introducing the Downtown 300i. “Kymco USA’s President Eric Bondy called it a ‘GSX-R, except it’s a scooter.’” :roflmao: :roflmao: :roflmao:
The article is about Kymco’s US models for 2010. The best line in the article: “The Quannon gets up to 45 mph as quickly as most cars (as long as they don’t know they’re racing you).”
Motorcycle Daily has never written a negative review, TMK. Call them “moto journo junket junkies”[/quote]
The Kymco Downtown 300i has the new G5 Kymco engine. It’s specifications are: 298.9cc, max horsepower 32.78/8000 ps/rpm, max torque 24.5/6500 Nm/rpm. On a dyno run in Greece it performed 32ps on wheel on the first run and after 3 more runs it performed 31,3 ps on wheel. It can do 0-100 in 7,5 seconds, it reaches 140 km/h easily, 150 km/h with patience and can hit 160km/h in downhill.
Looking at the speedo im saying 20bhp, if it had over 30bhp it would fly to 100 not crawl like that!.
My Z-125 (272cc) is faster than that and weighs 130kg’s+
G5 kymco engine… hmm kymco make a scooter called a G5 which uses a larger GY6 engine with a 4 valve head, its EXACTLY a GY6 but its similar in dimensions at the bottom end and cvt.
That engine can be bored and stroked to 300cc+… I wonder. [/quote]
7,5 seconds and crawl? this is a very good number for a 300cc scooter with no modifications at all. And 31,2ps on wheel on the dyno is very impressive as well.
300cc and 7.5 seconds… well it seemed longer than that to me, plus its a stock speedo which lies anyway!.
anyway i see no dyno, i doubt its possible, if we big bore our engine to 300cc (its not 300 its 260cc right!) with high compression pistons, 4 valve heads, PWK carbs and porting, polishing… everything we barely hit 30bhp!.
[quote=“smellybumlove”]300cc and 7.5 seconds… well it seemed longer than that to me, plus its a stock speedo which lies anyway!.
anyway i see no dyno, I doubt its possible, if we big bore our engine to 300cc (its not 300 its 260cc right!) with high compression pistons, 4 valve heads, PWK carbs and porting, polishing… everything we barely hit 30bhp!.[/quote]
The kymco downtown engine is 299cc not 260 cc. The 100km/h on the speedometer are 94km/h gps counted in my downtown (the one in the video). Unfortunately I don’t have the dyno result screensot, the dyno test took place in a motor show in Greece, the downtown made 31,2ps on wheel after 4 runs and after that a yamaha t-max 500 was tested which made 40ps on wheel. When I dyno test my downtown I will post the results.
To be honest, even if i was shown a dyno printout, i wouldnt trust it!.
dyno results are always a bit iffy IMHO, only good for comparing one vehicle to another on the same dyno… even then theres enough variation on the results to flush it down the toilet!.
usually when someone posts that, they get flamed to death by elite rice racers, but im sure we are all more mature than that
To be honest, even if I was shown a dyno printout, i wouldnt trust it!.
dyno results are always a bit iffy IMHO, only good for comparing one vehicle to another on the same dyno… even then theres enough variation on the results to flush it down the toilet!.
usually when someone posts that, they get flamed to death by elite rice racers, but im sure we are all more mature than that [/quote]
In Norway we got a system where a HP increase over 15% require documentation from manufacturer or a independent laboratory like TUV in Germany if brake or chassis can take the increased HP.
They don’t approve printouts from dynos showing rear wheel HP for this.
31,2hp on wheel. Everyone in the dyno test was surprised from this result because most 300cc scooters output around 22hp on wheel. As a comparison a t-max 500 was tested after the downtown and showed 40hp on wheel. It’s also hard for me to believe this result, that’s why I’m going to the dyno soon.
llary with my chronograph from the moment the speedometer starts moving till 100km/h I counted 7,5 seconds.
If the Downtown really does have that level of power, I know what smellybumlove’s next project is… removing 100 lbs of stuff from a Downtown, and then the engine mods. That beast should throttle wheelie.
