Dt 125r dyno

[Calum]

KMH? Yeah that sounds about right.

[jonne123]

No i meant mph

[Calum]

@jonne123 What! 120MPH out of a 125? A GP bike maybe, but not a road going bike.

[jonne123]

Jk i know that 170 is very good for some gagiva mito

[Calum]

@jonne123 170KMH is absolutely pushing it.

My brother has a mito and we were going down some private road and he said the speedo read 120MPH. I said, funny that mine read 90

But his was standard with an exhaust and 28mm carb.

My RS will touch that sort of speed but it has every mod conceivable on it. But you could touch that speed with a light rider.

[jonne123]

How many hp tzr?

[Calum]

I don't know, why don't you Google it.

The TZR wasn't anything special, so I'd imagine about the same.

If you absolutely must have the most demanding HP bikes then go for the Italian bikes. Aprilia/Cagiva or look for the absurdly rare and Overpriced Japanese bikes.

The TZR RR SP or the Honda NSR RR.

[jonne123]

Well it reads that tzr 125 has 26hp

[Calum]

@jonne123 Highly doubt it.

The RS is about that, and the 2RK TZRs wouldn't hold a candle to them. The SPs might make that sort of power, but they only made handful of those.

[Calum]

That's the SP and there are none on eBay.

Where as you are bound to find a handful of RS's and a few Cagivas if you search.

[jonne123]

I dont understand why yamaha didnt make dt more powerfil because they had competiton.

[Calum]

@jonne123 You literally don't understand do you?

Why does power = better?

That's not what the DTR was about. It's got nothing to do with power. It's a road going bike for learner legal. The requirement for that was 11Kw. It makes 11Kw on the nose. As does the WRX and every other 125 available today.

Power != Better!

The DTR is not a competition bike, the YZ is. And the YZ 125 makes like 30+ hp. it's got nothing to do with power so why do you keep harping on about power.

The competition for the Yamaha were bikes like

Suzuki TS125

Kawasaki KMX 125

And it was competitively marketed and priced against those accordingly.

Stop equating power to better.

[jonne123]

Ok could i win one of our village derbi 70cc that went past wr125x and that was humiliating

[Calum]

Not really, the 125 is a four stroke and the derbi is a two stroke.

In competition, the 125 two strokes went up against the 250 four strokes.

[jonne123]

One more question why did they restrict the newer dt is they didnt have too much power 11kw

[Calum]

Learner legal. The law changed to 11kw for riders with no licence.

[declan]

I saw a dt 125 lc make 17hp 13 is a little low also what cr was dynoed and even if the dt and wrx make the same power it’s not a comparison as the dt pisses all over 125 4 strokes

[Arild]

@jonne123 The dyno doesnt seem accurate if it made 14hp with the exhaust, better head, reeds dont really increase hp numbers more feel and throttle response. But id say 14hp from that seems off. But like calum has been saying, you wont make competition dirtbike style numbers. They go 5 hours and then you change the oil, air filter and the piston is like every 40 hours. Like calum said the dtr is the opposite, its not meant to win you some dirtbike race rather made to be a reliable commuter bike that has the possibilty of going offroading.

However, first learn the difference between torque and horsepower, you can have a bike with loads of torque but not that much horsepower, or the otherway around.
Secondly learn twostrokes in general, how they work, how you tune them etc, theres literally an endless amount of stuff you can do to your bike if you have the skill and knowledge to do it, but you barely knew what calum meant by "tuning".

Learn the basics first and stop fixating yourself on numbers and other bikes.
If high hp numbers is what u find important, then sell the dtr and get a yz or what calum mentioned above

[jonne123]

im thinking of buying zeeltronic and then for dyno adjustment. "rather slow bike with good tune than fast bike with bad tune"

[Stevie Wonder]

@Calum said in Dt 125r dyno:

https://www.ultimatespecs.com/motorcycles-specs/yamaha/yamaha-dt-125-r-2002

Maximum power - Output - Horsepower 14.10 HP (10.3 kW) @ 7000 RPM

Sorry to intervene but a bone stock DTR can and will make 23hp?
(I have a dyno printout to prove it but once again I’m on my phone and can’t upload it)
However and this is a BIG however... I honestly believe that there where only ever 2 models of DTR capable of producing that figure from factory and without modification.

The legendary fast boi UK 89 model and the French 97-98 4BL that came with the rare 3nc-20 CDI. (however even this model came with a 3BN head so could be argued that its “restricted” or generally not reaching its full potential.)

Now I could be wrong, but every other model bike even regardless of area code that I’ve seen has had some kind of “restriction” or something that’s hinder its performance more then those other two bikes.

However, Callum’s right about quite a few things. Firstly, remind yourself what your machine was designed for, it’s a steep learning curve for some of us me. Your DTR, just like mine, was never designed to be sending triples whilst waving a Ronnie Mac flag mid air. It was however designed to be bullet proof, see 14k on a set of rings and be as happy taking you to the shops as it is with some hooligan on it popping wheelies and blasting through some woods. The moment you realise that is the moment you’ll gain a whole new level of appreciation for the very capable little deee teee arrrr.

Secondly another thing I had to learn is a two stroke is only ever as good as it’s last/current owner and with near enough all our bikes cracking on 20+ years old unless you’re lucky enough to own a very well preserved French bike or someone’s build you may as well just assume it has 15hp as you will never know what all of the bikes previous owners have done to it