Dyno test Yamaha YZ125 2022

www.vhm.nl/AA3...
In this dyno video we test the new Yamaha YZ125 2022 with a new VHM cylinder head (AA33203), insert (AE32327-E) and HGS exhaust and silencer.
All VHM parts used in this video:
Cylinder head: www.vhm.nl/AA3...
Insert: www.vhm.l/AE32...
00:34 Starting the engine
00:43 Shifting through the gears
00:53 Warming up the engine
01:04 Making several dyno runs

[@SosopChabot]

This man is a proper dyno operator…

[@mkkiloma3991]

Nothing changes. OEM is already good. It's worth using the money to buy gas and exercise

[@yteb08]

Dyno test Yamaha YZ250 2022

[@yteb08]

Dyno test Yamaha YZ125 2023

[@Kote_Matroskin]

This is power on the wheel or crank?

[@Verdonk115]

Why using only the stock silencer? Is it better then the HGS silencer?

[@PlayboicartiandLilSkies]

No but dep is the best excaust system for yz125 they give the most hp

[@pepemanolo390]

It is a VHS cylinder head mount, my 125 has lost lows and mids, it was a mistake, yes, the engine heats up less.

[@christophertile8618]

Jetting?

[@iktorn3539]

Next YZ 125 2022 GYTR

[@eliastrespalacio1268]

Yz 250F plis

[@Realistic-American-Reformer]

Kinda let down here. What was the actual number at the rear wheel?

[@jonathoncatterson8901]

It shows on the chart at the end of the video and thats to the wheels

[@rainerzufall1521]

@@jonathoncatterson8901 no

[@davidbassett4093]

@@rainerzufall1521 Yes, it's the rear wheel. Do you see the tire rotating on the dyno???

[@rainerzufall1521]

@@davidbassett4093 it is on crank. they commented that in another vid

[@davidbassett4093]

@@rainerzufall1521 Ok, you have my apology! I found this on the dyno main page: "We measure on the rear wheel, but add a small correction factor for the crankshaft. So the graphs in the video's show the power on the crank". This "correction factor" may be what's cited at the top left on the dyno chart, but its derivation is not described or defensible. Way back, automobile used to cite crankshaft horsepower and not test with losses from accessories included (alternator, power steering pump, etc.) With a dirt bike, it's kind of un-ridable without a rear wheel, so what the point (other than showing a bigger number)? Their correction factor would have to back-out tire pressure, rubber compression, chain losses, etc... Even then, wouldn't that be power at the output shaft as opposed to crankshaft? What's next - "power at the piston"?! Ok, tirade over...

[@iktorn3539]

Is it hp on rear wheel or crankshaft?

[@keshmo12]

That would be rear wheel hp. Stock hp is 34 so they gained like 4hp with the upgrades. Hard to say though since every dyno is different and there's no stock run on the chart.

[@rainerzufall1521]

@@keshmo12 they measure crank hp

[@angelmendoza3723]

Kx112

[@kevinjakoncic6239]

Beta RR 250

[@SyllaMohamed-k1t]

😅😅😂😊❤