450 Rallye .... mmmmmm yes please!

Greggers

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Ok, I did the ride report, did a bit of a kit report so thought I really should say something about the bike... Here it is.

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I should be writing reams and reams about this beauty, but there is not very much to say - honestly! I lacked just about every degree of talent and skill to use this machine properly, yet despite this I had fun for every kilometer I was aboard. Make no mistake, this is a fierce motorcycle with the heart of a lion, but one that will do everything you could ever ask of it.

Ready to race this 450cc motor produces close to 90BHP, yet will pull cleanly from 2000rpm right through to the point at which the rev limiter cuts in. The chassis performed impeccably and was immeasurably better than my meagre talent could ever have exploited. I have no doubt that the service interval is much shorter than a regular LC4 or EXC, but these riding conditions were by no means constant race pace so the mechanical demands placed on the engine are much less than it was designed for. I assumed that it had been serviced prior to our departure, but after 2600 reasonable kilometers the oil level had dropped to the bottom of the check window. Access to the oil filler cap was tight amd might even have needed the RH fuel cell to have been removed, but that would be a small price to pay every 2000 km.

The riding position was perfect for me, even the ergonomics of the seat were good although I doubt I'd have held that opinion for long without my sheepskin saddle cover. The only grumble I'd make is the position of the gear lever - I felt that the bash plate prevented me getting my toe securely under the lever, most changes were made with the welt of my boot sole. Even so, this technique proved successful with only a couple of dodgy changes.

The gearbox was super slick once I'd mastered the boot-side technique, but finding neutral was a complete b!atch!! The clutch was great but started to drag a lot if you spent any time standing still in first - there are a lot of traffic lights in Dubai !! The only way I found it worked was by coasting to a standstill in first and putting a featherlight touch on the lever to slip it into neutral just before you stop - too much lever pressure though and your were straight into second and risked being chugged forward as the clutch got hot...

The bike came equipped with a Lithium Ion race battery, not much bigger than Canon G9 camera. It packed enough of a punch to start the bike without problems as long as it wasn't in gear - it wasn't strong enough to overcome the clutch drag.

The last issue for me was the side stand - it was a real booby trap! As I mentioned in the ride report the bikes suspension is simply immense with 12 inches of travel in the forks and around thirteen in the rear! On tar this makes for a magic carpet ride, as smooth as a smooth thing on the very smoothest day. However the initial travel of the units wit the rider aboard was also quite significant. I wasn't able to measure sag either static or dynamic, but this is not a bike to mount with the stand deployed - if you do, the overall effect is that as the suspension compresses the leverage applied by the side stand will push the bike over to the right hand side without any chance of recovery or 'over-lean' to be able to scoop the lever back - you'll be on the deck by this time! Ultimately I gave up using the stand and propped it against any suitable object - wall or lamp-post - to mount and dismount in such a way as to preserve my dignity.

I have always championed the smaller lighter bikes for ADV riding and my experience with the 450 simply reinforces that for me. For every one of the 2700 kilometres I rode alongside Rob with his 990 there was not one single metre that I would have chosen the 990 over the 450. Not one.


If you get a chance to ride one grab it with both hands and don't let go.... you'll remember it for a long long time.

Hope you enjoyed the read!

Greg
 
Great bike, I'd love one despite knowing my riding skills couldn't do it justice but I seriously doubt it produces anywhere near 90hp.
 
Poss ...

Just going on what the guy at KTM told me ..... I've tried to corroborate the figure but neither BHP nor torque figures are readily available. I did wonder that if it's a pukka race bike then KTM might not be too keen to show their hand ...

That said it's almost irrelevant - it's waaaaay too powerful for all but riding gods, and you and I are mere mortals...

Greg
 
Pyndon will be able to confirm power figures once he's back from ther Daker, he spent 40 hours with his on the dyno fine tuning it.

I'd be surprised if it made more than 60-65bhp as the bike's designed to cover a lot of hard miles between stages.

Edit: thinking about it, I reckon 50-55 is nearer the mark.
 
It does look tremendous!!

I'm interested to hear what it was like for the longer rides on the road... is it vibey? Does it feel like you're ringing it's neck to get up to A-road/motorway speed?

Also, 2000km is a way better service interval than the 10/20 hours often quoted for this class of engine.
 
It does look tremendous!!

I'm interested to hear what it was like for the longer rides on the road... is it vibey? Does it feel like you're ringing it's neck to get up to A-road/motorway speed?

Also, 2000km is a way better service interval than the 10/20 hours often quoted for this class of engine.

The frequent service intervals are only needed if you race the bike, they can be extended considerably if using it for trailriding. The valves on my old RFS engined 400EXC arely needed adjustment and when they did, you could do them "in the field" without using feeler gauges. I've not needed to adjust the valves on my 390 Berg in well over 60 hours. Oil and filter changes on these bikes are relatively cheap & easy to do yourself.
 
Arrr ... The dangers of taking someone else's word lol...

In all honesty it's academic isn't it, it's a powerful powerful beastie...

I can only draw upon my LC4 400 as a comparison - originally fitted with a Dell Orto (?) carb which was a bit shite, so I fitted an FCR37MX from an RMZ250 instead. The flatslide really woke the bike up, the accelerator pump gave it the 'snap' it was missing with the OE carb and a lot more ooomph (technical term there) as well as a very noticeable hike in power. That said it's still a bit of a softie and behaves exactly like you'd expect a 12 year old 400cc single to behave. The Rallye however gave its power like a steam hammer - snap the throttle open and the response was instant and it was hard. No pissing about with chuffiness, just a burst of power like a punch in the face.

It was geared for racing but because it was fitted with 12psi mousses I was warned against prolonged high speed highway work to prevent overheating. Because Mark had said no more than 120kph constant I was fairly cautious about going too fast, but saw 145 on the clock on a couple of occasions and at that speed it was rock solid and still felt as though there was more to come. With tubes and tyres better suited to tarmac it would have been very happy cruising at that kind of speed. What did surprise me was how little the 450 vibrated - when I got home I jumped on my 400 and it was very obvious that it was a lot buzzier.

I'm quite attached to my old LC4, but it's fair to say that the 450 experience has left me wanting, a lot. I'm wondering whether using a 640 cam with longer and higher lift and maybe swapping the 37 for a 41 would yield more. The Rallye uses the same valves as the LC4 so ultimate gas flow through the head is potentially the same but perhaps a little work on gas-flowing the inlet would help matters ... Ooooh my thinking head is in top gear now...

G
 
So do you have any idea what separates a Rallye 450 from a regular 450 from an EXC?
 
About £20k plus and ego!!


I know what I would have though!:)

Sorry, what i meant was, what separates the engines? Is it different cams? Fuelling? Pistons?

Like Gaz, I know which one I would have too! But I'm wondering how mechanically different they are...
 
The 450RR is a heavily modded 450SX (motocross engineinc carb, not EFi) in a modded 690 frame plus all of the rally spec bits. The 690 frame gives more stability at speed compared to an EXC frame at the expense of a weight penalty. Any changes to the SX engine will be aimed at giving a broad spread of reliable power comapred to the peakier output of an MX engine built for short sprint races so I imagine that cams, valve sizes, compression, cooling etc have all been looked at bearing in mind the distance and range of altitudes they'll be used in. KTM have stuck with a carb, I know Honda have suffered fuelling issues but that may be because I've heard that there CRF based rally bikes have 5 fuel tanks.

I think Pyndon mentioned in one of his latest phone-in sessions from the Dakar that the 450 Husky rally bikes weigh as much as 15kg less than the KTM 450RR, he also mentioned that in about three years time there will be a customer version of a new, lighter KTM rally bike which means the factory team will be using it in the next couple of years if true.
 
The 450RR is a heavily modded 450SX (motocross engineinc carb, not EFi) in a modded 690 frame plus all of the rally spec bits. The 690 frame gives more stability at speed compared to an EXC frame at the expense of a weight penalty. Any changes to the SX engine will be aimed at giving a broad spread of reliable power comapred to the peakier output of an MX engine built for short sprint races so I imagine that cams, valve sizes, compression, cooling etc have all been looked at bearing in mind the distance and range of altitudes they'll be used in. KTM have stuck with a carb, I know Honda have suffered fuelling issues but that may be because I've heard that there CRF based rally bikes have 5 fuel tanks.

I think Pyndon mentioned in one of his latest phone-in sessions from the Dakar that the 450 Husky rally bikes weigh as much as 15kg less than the KTM 450RR, he also mentioned that in about three years time there will be a customer version of a new, lighter KTM rally bike which means the factory team will be using it in the next couple of years if true.

Cheers Possu :thumb2
 


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