Peg v. Cadenza, speed By imagesinthewind (Read 931 times)

[imagesinthewind]

Peg:
Type 4-Stroke, Single Cylinder, Liquid Cooled
Bore x Stroke 58mm x 57.8mm
Compression Ratio 10.3:1
Carburetion Keihin
Displacement 152.7 cc
Max. Torgue 9.0 / 6000
Horse Power 12 HP
Ignition CDI
Transmission Automatic CVT

Cadenza:
Engine Type:Single cylinder, four-stroke
Design:GY6
Displacement:150cc
Bore x Stroke:1.90 in × 1.93 in (48.2 mm × 48.9 mm)
Compression Ratio:9.2:1
Carburetor:Deni, joint venture with Keihin of Japan
Max Power:9.6 hp (7.2kW) @ 7,200 rpm
Max Torque:5.2 lbs·ft (7.0 Nm) @ 6,000 rpm
Max Speed:64 mph


When Tom and I went out Saturday after the valve adjust I did some 'research'. From a dead stop, up a slight hill he dusted me. I was at WOT and he was pulling away. Cadenza engine has 1500 miles, Peg has 350. We both moved at the same time from the light.

The specs say Peg is 12hp, watercooled. Cadenza is 9.6, air cooled. Even without being broken in (1000 miles) I figure that I would be as fast if not just faster. 2.4 hp isn't small when working at these small numbers.

So, think my rollers are heavier? Why would the Peg be slower?

Thanks!

[Bashan]

I've got a question, what do the bikes weigh? H2O cooled has more hardware, also pushing a water pump, could be sapping some of that HP. Rich

[jake aka:ventoscoot]

On thier own the Peg should, on paper, be faster. I do agree with Bashan weight may be an issue, I know my scoot is fast, but if I put a rider on it who weighs 160 insterad of my 240, it would scream. If I remember these body styles, the Peg is larger, no? Also rider height/wind resistance could be a factor. What is the curb weight (with no rider or gear) of each scoot.

[zugzug]

Its probably because you put that big kite of a shield on it ;D
-Zug

[imagesinthewind]

Cadenza is 282# Tom is 185#

Peg is 286# and i'm 166# (I'm a Botticelli, but losing)

So the weight is about the same.

[Bashan]

I'm going with the water cooled which is interesting, one can't look at just the HP and think it's faster or slower, there's other factors to consider. Does it seem slow to you? If so maybe there is something amiss in the fine tuning, who knows. Rich

[♔Big Guy♔]

All things being equal, the Peg should be faster in theory, however, I can break out 2 Cadenzas from the crate and one might be faster than the other. These are all handmade, which means who knows who assembled the carb? What rollers were used? What belt was used... and so on. I have seen 3 different belts on the Cadenza, so all I can assume is they use whatever is in stock at the moment - same applies for other parts.

More important is the way factories report HP. Is it measured at the crank? Is it measured at the final drive? Are they fudging on their specs?? The latter is the most likely culprit.

And finally, your Cadenza is already run in, and when they are, they gain more power. I can also tell you that I have ridden at least 6 or 7 Pegs and 2 MC-12-150 Roketas and never felt that any of them were faster than a Cadenza. The power band on the Cadenza is smooth and responsive and seems to be tuned properly (parts wise) from the factory. We have never had to re-jet, change the weights or tune any Cadenza, other than fine tuning, like the AF mixture.


-Rich

[imagesinthewind]

Thanks!
Rich.
I will let the engine break in more and maybe check the
rollers first. I remember breaking open the Vie and finding
18s in it, changing them to 14/11s made the top end much
faster and climbed hills better. If there are 18s in the Peg
and 15s in the Cadenza that could make a difference.

And this is the second engine in the Fly, the first, Tom says
was very different than this one. He says it seemed broken
in the moment it was installed. Faster by far then the first and
smoother from the beginning. He is getting better, smoother
power with each mile. And I have only given the Peg a mere
350 miles compared to Fly 1500.

Peg seems fast when I'm riding alone. It seems slow when Tom
is puling away from me. BUT I can hold it up and Tom tetters on
it when riding. Finally had to measure each others inseam to prove
my legs are longer than his.

I'm going to shave the seat this weekend and install the Vapor Trail Tech
to it so I can tell how fast/slow I'm going. Tom says the Fly hits 70 by China
and is about 8% off.

[Bashan]

Great info as usual Big Guy, Rich

[imagesinthewind]

well, right now mine is much faster than the Cadenza, since the Cad isn't running.

[Deleted]

Peggy Sue has 3800 miles on her, and routinely hits 65 mph for 10-15 minutes at a time.

Have you found any performance parts for the Peg yet?

[imagesinthewind]

nope, but I haven't looked either.