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Old 12-31-2009, 12:57 AM   #1
stevh0 OP
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Yamaha WR450F Adventure Bike

Ive been thinking. there has been plenty of enduro bikes adventurised over the past couple of years and by far the most popular is the 525/30 Xcw and the WR450.

How would you build your 450F?

Lets talk fuel, luggage, gearing and so on.
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Old 12-31-2009, 01:12 AM   #2
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Definitely like this:





Kit from http://www.jvo-racing.com/catalogo.php
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Old 12-31-2009, 05:49 PM   #3
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Lukas - where do you get all them cool pictures? :)
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Old 12-31-2009, 05:57 PM   #4
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Lets take a moment to reflect on what the oil in a WR450 will look like at 25hrs.....

And now lets pause for a moment to visualize the effort involved with replacing said oil while in the back of beyond....

And finally, while on our seattle to fairbanks tour, shall we consider the piston replacement somewhere on the dempster?

Rally bike? Absolutely. With service every night, an extra $10k in body mods... hell, I have a G450x if you want to go that route. But the lightness and performance come at a price. Its like comparing a 525 and LC4, wildly different beasts. And one's an adventure bike, the other is a weekend toy for the local trails.
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Old 12-31-2009, 06:21 PM   #5
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Why are people paying money to put mud clogging, low clearance fenders on dirt bikes? It seems counter intuitive.
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Old 12-31-2009, 06:27 PM   #6
dump-a-thump
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Its a rally build. The low fender keeps you from launching rocks into your rad. And results in less mud getting thrown up into your light and face.

Traditionally rally is held on drier terrains (higher speeds and longer distances), and mud-packing isn't an issue. The occasional clay section is just there for our amusement.
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Old 02-01-2010, 11:29 PM   #7
Colebatch
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Quote:
Originally Posted by trackhead
Why are people paying money to put mud clogging, low clearance fenders on dirt bikes? It seems counter intuitive.
As mentioned before, less rock thru radiator risk yes, but perhaps the main reason is cooling ... you lose up to 50% of your effective cooling with the airflow blocked by by a high fender (most rally bikes have a large single radiator going all the way across)... the fender covers a third of your radiator surface area, and adds so much turbulence to the remaining airflow hitting your radiator that it significantly reduces cooling on the remaining 2/3 of your radiator.

Additionally, in rallys these bikes spend a fair bit of time around 75 - 100 mph ... and the low fender is significantly more aerodynamically stable and efficient than a high fender. At those speeds its a significant difference.

So in answer to your question, there are 3 good reasons to use low fenders on dirt bikes, and only 1 reason not to.

Even when it is muddy (light mud) a low fender is better at keeping mud spray off your headlight and goggles as well.

As rallys tend to be held on fast dirt gravel roads, sand etc, there are plenty of reasons to use a low fender.

This is how much cooling you can get with a low fender:


And this is how much gets cut off with a high fender:


And this is what can happen with your high fender cause you dont get enough cooling:
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Old 12-17-2013, 02:01 PM   #8
Foot dragger
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Quote:
Originally Posted by trackhead View Post
Why are people paying money to put mud clogging, low clearance fenders on dirt bikes? It seems counter intuitive.
Rally kits,in the states anyway are for looks mainly.
There's a reason dirtbikes have had high mt front fenders for many years.
And breaking fairings from tipovers is only good if you have spares nearby.
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Old 12-31-2009, 07:13 PM   #9
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Quote:
Originally Posted by dump-a-thump
Lets take a moment to reflect on what the oil in a WR450 will look like at 25hrs.....

And now lets pause for a moment to visualize the effort involved with replacing said oil while in the back of beyond....

And finally, while on our seattle to fairbanks tour, shall we consider the piston replacement somewhere on the dempster?

Rally bike? Absolutely. With service every night, an extra $10k in body mods... hell, I have a G450x if you want to go that route. But the lightness and performance come at a price. Its like comparing a 525 and LC4, wildly different beasts. And one's an adventure bike, the other is a weekend toy for the local trails.
The oil on the Yamaha is easy to change. One bolt to drain and one to fill. I could handle that in the woods.

Check and see how many hours people put on these bikes. I think you'd be surprised how far past the recommended amount by the Yamaha manual.

The trannys lack of 6th gear sucks but the durability is proven for long rides. There is a thread right now with a WR needing it's first valve adjustment at 160 hours. That is a long ride weekend trail ride.
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Old 12-31-2009, 09:57 PM   #10
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Lilbit,

I did 11600km (450-500hr)on my first motor. I did not touch the valves. I should of though, but i never did.

Guys are fitting HT coolers to the 450's and 525's and running them for 2-3k miles on dualsport rides. With just that little amount extra, I dont want to know what the bottomend is going through. That being said, it can be done. Doubtfull Ill ever do more the 10hours on a change.

The manual points out to change the oil every 1000km/600miles. Thats about 30hours?!?!!?
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Old 12-31-2009, 10:22 PM   #11
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I'd love to see more threads of this type popping up for the Japanese large bore enduro bikes. Solutions to oil capacity etc. discussed. My 2003 yamaha YZF just needed its first set of valves and only its second piston, not bad for a seven year old race bike. So I beleive a WR450 with the same basic motor design could be utilized for long offroad journeys with not much thought.

I just got back from a three country, month long, offroad based trip on my KTM 525EXC so I believe my 525 might disagree with Dump-a-thump pigeon holing it into weekend toy status.

Fact is some of us prefer to take a light weight bike over a lardy dual sport/ADV if we are heading into difficult terrain. Both bikes would most likely make it and the lardy dual sport no doubt with less maintenance. However due to dementia I enjoy a lightweight race bike on the trips I do more than a DRZ, LC-4, WR-R, etc. Not sure about others but I love motorbikes for the fun it gives me, nothing pragmatic about it. I want to have fun, period. Fun for me is whistling over the tops off whoops, picking along a tight singletrack hopping roots and rocks, etc. and more often than not a lightweight Enduro bike turns my ugly mug into smiles quicker than a KLX, GS650, LC-4 ever can. For me I'll take lovely, sexy, Lolita with the Doc Martins, push up bra, and dark eye make-up from Philosophy class over frumpy ole Martha in her baggy UCLA sweatshirt and tennies, from Home Economics class any day. Not the right choice for everyone but the right choice for me. I'm guessing the original poster might have the same proclivity and hence his desire to see what WR's pressed into long riding duties look like.
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Old 01-04-2010, 04:23 PM   #12
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Not the best bike for long ADV pavement, but will handle the dirt perfectly. All the garbage about checking valves, new piston, daily oil change, blah blah blah, is just that Garbage. I know several people including myself who have ran, or currently run WR450's from 2003-2006's. Not a single one of them ever replaced a piston, a few checked the valves maybe once twice at the most.
Highest mileage one is a 03 with 15k running stock piston, valves, oil changed every 500-1000 miles. Regularly rode on pavement, and flogged hard it's entire life. Never ran on pavement for more then a couple hours straight, but dirt ridden all day often.
Too much maintenance and screwing with shit only leads to trouble.
Only concern I would have is long hours 4+ hours of constant highway speeds/RPM's with stock gearing. If it can be re-geared (im in that process now) to run at highway speeds 70-80mph at decent RPM I would have little worry.
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Old 01-05-2010, 12:42 AM   #13
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what is the best cruising Rpm? 7000rpm to high?

try the 15/45 combo for cruising, gave me a topspeed over 100mph on gravel.
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Old 01-05-2010, 12:55 AM   #14
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Im thinking of fitting the tenere headlight unit to my wr.

what do you guys think?

Just spoke to Yamaha now to get the figures, they will call me back.
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Old 01-05-2010, 01:22 AM   #15
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Prices are in

The bracket, screen, Cowl, Inner and outer inditcator panel and headlight will cost just over $900

I need to now think long and hard if I want to convert to motard or dakar replica.

:/
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