Horizons Unlimited - The HUBB - new honda crf 450L next year

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- - new honda crf 450L next year (https://www.horizonsunlimited.com/hubb/which-bike/new-honda-crf-450l-next-95082)

Quote:

Originally Posted by AndyT (Post 585013)

The problem with this calculation is that Honda hasn't told us what rpm the HP and Torque numbers occur at. Peak torque and HP seldom if ever occur at the same RPM.In order to solve the above equation for RPM, we would have to know torque and HP at the same RPM, or peak torque and HP at their different RPM, and that is not provided by Honda in anything I have seen yet.

Inertial dynos work by measuring the rate of acceleration of a known mass (the drum) through an RPM range, to get a HP curve, then a Torque curve is calculated from HP and RPM.

Think of it this way, after the RPM that peak torque occurs, HP can and usually does, continue to rise with RPM, because RPM is rising faster than torque is falling, at least to a point.

Anyway, the point is, the data we have to work with is incomplete.

Hi Andy - that is the point of a fixed equation - if the max power (26bhp/18Kw) and max torque (32Nm) have been given, then the revs have to be 5,500rpm for those numbers to coincide.

Jx

Quote:

#4. It Makes a Lot More Than 24 Horsepower
There was a rumor going around that this bike only made 24 hp and we can say that is completely false. It looks like a European Honda site mistakenly posted the CRF250L’s hp number for the 450L’s. We asked Honda for a publishable HP number for the 450L and they said it was in the 40s. For dirt bikes, Honda (all OEM’s actually) don’t give out HP numbers since there are so many variables in dyno’ing the bikes. Also, Honda added that there is only a 4 hp difference between the X and L and that the cams and cam timing are exactly the same.

7 Things To Know About The All-New Honda CRF450L - ADV Pulse

That's an interesting article.

It looks like it's going to be a very capable street legal Enduro bike. But not much of a long distance overlanding bike that many were hoping for.

One to roll out of the van and take out for a few days more than riding it from your front door to the desert.

But time will tell....

Good article from ADV Pulse ... which normally blows. doh

They've filled in a lot of the unknowns regards power, suspension travel and the Ti fuel tank. All good.

Did anyone notice that Ti tank only holds 2.1 US gal ? :eek3:

And can you imagine how hard it's going to be for the aftermarket to fit a bigger plastic tank given the super convoluted shape of the stock tank? Hope I'm wrong on this one but it looks like a puzzle to me.

40 HP range is good, plenty for such a light bike. But will it hold up to long runs at near top speed on highway?

I worry about the massive seat height quoted and assume Honda only intend to sell to riders over 6 ft tall? :innocent:

And of course the service intervals are absurd for any machine intended to do longer distances.

So, like Ted says, a good weekend bike ... of which we already have MANY as good or better than this new Honda.

Last is the price. $10,400 USD is easily in KTM or BMW range. Bit optimistic on Honda's part, IMHO.

And lets hope Honda has solved disastrous problems with the UNI Cam heads and rocker arm issues. SO MANY failures on those early CRF-R and X engines, both 250's & 450's.

I have been witness to TWO failures, one in Baja and another in Black Rock Desert, Nevada ... the Black Rock guy was on his 3rd CRF motor. Those early CRF's really tarnished Honda's stellar record for reliability built up over last 25 years with XR series bikes and dozens of Baja and other race wins.

Word is that these issues were dealt by Honda a few years back ... but bad news tends to poison reputations long past the "Fixed" date. The good news is the CRF250L (Thai made) seems tough as nails and doing well. But the 450 will put out nearly double that HP ... so we'll see. :innocent:

It promises a lot but is maybe too focused, as previous said probably better to upgrade a 250 rally with better suspension and moderate reliabloe power ups