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Offline malJohann

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..streetable enduros...
« on: June 23, 2008, 09:59:44 am »
I'm just wondering out loud for the moment, but are there any streetable enduros out there? I don't mean just roadworthy either. This weekend after a blast on a CR250R with a friend of mine running in a CR500 that has just been rebuilt, we stopped at a local bike shop to check his carb.

I got to chatting with one of the mechys and he reckons you can run a competition bike on the road with the service intervals measured in kilos instead of hours, as long as you don't ride the hell out of it like the pro teams do.

So this got me to thinking and trying to decide whether he's talking bollocks or not, because although you'd not be running it so hard the engine is still operating under the same compression and is still making all that power out of comparatively little CCs with a comparatively small oil capacity to a road bike.

For me a small, light, yet powerful DS that‚??s more dirt oriented would be perfect, which is why I‚??m trying to gather some info. My wife would love me to get a big CC commuter and be over with it, but then weekend comes with no playtime in the sandbox. ???
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Offline Runner

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Re: ..streetable enduros...
« Reply #1 on: June 23, 2008, 08:48:27 pm »
You want to build a timebomb.
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Re: ..streetable enduros...
« Reply #2 on: June 23, 2008, 10:11:16 pm »
In the 450 size class DRZ, rode a CRF 450 and it flies but no way is that thing going to hold together when you run it down the street at a steady 120 km/h. Those bikes only have 1 l of oil for goodness sake ! Trust me I've looked at them all but at the end of the day go simple and reliable. If you want more put a 440 kit on and it's still reliable.
« Last Edit: June 23, 2008, 10:12:41 pm by sidetrack »
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Offline lecap

Re: ..streetable enduros...
« Reply #3 on: June 24, 2008, 07:28:19 am »
Agree with Runner and Sidetrack. I have seen and worked on a number of "plated" bikes and that was usually Enduro not even MX. The only reason the bikes were plated was to qualify for participation in Enduro racing (European rules require the bikes to be "roadworthy"). A racer is not designed to last 100000 km. Top performance bought at the expense of service life.
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Offline malJohann

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Re: ..streetable enduros...
« Reply #4 on: June 24, 2008, 09:12:56 am »
Which is why I thought BS when the mechy spewed that. Thanks for the confirmation though.
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Offline Poffmuis

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Re: ..streetable enduros...
« Reply #5 on: June 24, 2008, 03:53:50 pm »
Maybe you could do it with a CRF230    ??
 

Offline SuperJuice

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Re: ..streetable enduros...
« Reply #6 on: June 24, 2008, 03:55:50 pm »
BMW G450X?
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shark_za

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Re: ..streetable enduros...
« Reply #7 on: June 24, 2008, 03:57:36 pm »
The BMW450, Husky450, WR250 and a few others come in road legal form.
The CRF230 is so mellow it could run for 5000km before an oil change I guess.

I'm going to be be guinea pig on the 450 so lets see ;)
 

Offline malJohann

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Re: ..streetable enduros...
« Reply #8 on: June 25, 2008, 08:34:58 am »
The BMW450, Husky450, WR250 and a few others come in road legal form.

Yes, yes. Reliability, service intevals and costs is what I'm worried about.

The CRF230 is so mellow it could run for 5000km before an oil change I guess.

Which is why I won't consider it if I buy new.

I'm going to be be guinea pig on the 450 so lets see ;)

The Beemer? Good. I think that'll likely be the only 450 that won't break the bank when used on highways.
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Offline Riebeek

Re: ..streetable enduros...
« Reply #9 on: June 25, 2008, 10:36:00 am »
"A racer is not designed to last 100000 km. Top performance bought at the expense of service life."

MalJohann, I am sitting with the same question and are still looking for the answers regarding dual sporting a smallish bike.  Yes the oil capacity is a problem, but at the Swartland 400 the pro riders will do 400km at flat out speeds in predominantly sand.  Sharkza or anybody else do you think they have an oil change while in the pits or do they just scrap the bike after one season's racing?

Also the gearbox might be a problem with fith and six gears not designed to work at top speeds for extended periods.  Again back to the Swartland 400 or any other National off-road event, do the racers accept this and either scrap the bike or rebuilt the gearbox at the end of the racing season.
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shark_za

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Re: ..streetable enduros...
« Reply #10 on: June 25, 2008, 10:48:06 am »
400km is not far, only 6 hours of racing. The services are normally set at 10 or 20 hours.
Before every race they will be fully serviced, could you run a bike with weekly services?

The top SA teams rebuild bike motors about twice a year. Even my KDX is supposed to get n new top end every year.

This months Dirt Rider in the USA have the maintenence schedules of the GNCC and other racers there.
Some rebuilt motors every race.
 

shark_za

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Re: ..streetable enduros...
« Reply #11 on: June 25, 2008, 10:53:45 am »
As sidekick says, oil volume is often under a liter, this needs to be changed every 10 hours at least. Only the highest quality synthetic.
Then the other maintenence item is the valves. Clearances checked and set every 20 hours.

I dont think there is much other accelerated wear on a competition bike as long as you keep those two things in spec.
Gear ratios can be changed with sprocketing.

In real world terms, change oil every 1000km or less, valve clearances less than 2000km.
If you can live with that, should last quite long.
 

Offline Riebeek

Re: ..streetable enduros...
« Reply #12 on: June 25, 2008, 11:38:45 am »
Thank you Sharkza.  My time availability for riding is so limited that currently I change the oil on the bike every six weeks (half an hour at about R360 for oil and filters) and set the valves every 3 months (R250 at CPR racing), so an enduro bike fits my needs on both counts (Enduro's and a bit of Dual Sport).

Do you know what the oil capacity is on the BMW 450 and at what intervals the valves must be set.  My bike has done very little hours but during the last three services the valves did not need any adjustments.  It seems that this is the norm if you take into consideration the posts on other forums like Advrider and KTM talk.
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shark_za

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Re: ..streetable enduros...
« Reply #13 on: June 25, 2008, 12:17:01 pm »
Depends on the bike.
It can be said that the 450's are stressed to a lesser degree than the 250's.
To get power out of the 250 these things need to rev to over 10000rpm, I have heard of valves going on Honda CRF250R's for example.

To ride a 450 pumping out its max power you need balls of steel and vice like grip.
 

Offline malJohann

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Re: ..streetable enduros...
« Reply #14 on: June 25, 2008, 03:42:31 pm »
What about older, big CC enduros like the XR600? Would they be suitable for the open road?
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Offline Riebeek

Re: ..streetable enduros...
« Reply #15 on: June 25, 2008, 03:47:13 pm »
I while back I had a talk with a guy in Mexico whose business it is to rent out DS bikes.  Only bikes in his fleet are XR 650R and XR400's.  Unbreakable.
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Offline Lito

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Re: ..streetable enduros...
« Reply #16 on: June 25, 2008, 04:58:38 pm »


I dont think there is much other accelerated wear on a competition bike as long as you keep those two things in spec.

Well, to be purist, that aint so true - depending on which competition bike.

Example: - and its an interesting FYI - the son of the ex neighbour of Hilde was the best racer in his age group in SAFrica in MX.

They dont touch clutch when changing gears, and keep the bike almost WOT the entire time.

Suffice to say, his gearbox would fairly often go POP - and the maintenance was insane.

Sponsorship is awesome for him (they couldnt afford it otherwise), and its a big thumbs up for Yamaha that the bike lasted as long as it did.

But definately: new bike every season despite the high maintenace.
 

Offline Runner

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Re: ..streetable enduros...
« Reply #17 on: June 25, 2008, 07:29:00 pm »
"A racer is not designed to last 100000 km. Top performance bought at the expense of service life."

MalJohann, I am sitting with the same question and are still looking for the answers regarding dual sporting a smallish bike.  Yes the oil capacity is a problem, but at the Swartland 400 the pro riders will do 400km at flat out speeds in predominantly sand.  Sharkza or anybody else do you think they have an oil change while in the pits or do they just scrap the bike after one season's racing?
Also the gearbox might be a problem with fith and six gears not designed to work at top speeds for extended periods.  Again back to the Swartland 400 or any other National off-road event, do the racers accept this and either scrap the bike or rebuilt the gearbox at the end of the racing season.

They get a new bike every second to third race.
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Offline Riebeek

Re: ..streetable enduros...
« Reply #18 on: July 02, 2008, 03:49:20 pm »
One thing to stress again is....MAINTENANCE.  I know KTM's are not cheap to run, but make sure for what purpose you want the bike, before you go out and buy a competition bike.  It is not cheap, whatever the make, to maintain a competition bike properly.  Yes I agree that a Kawasaki KDX 200 and other two strokes are less expensive than say a KTM 450, but never the less still expensive.
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