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About WR450FGreg

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    Family. Farming. Bass guitar.

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  1. Thanks BGoyins. I've replaced the fork seals in it, so going inside the forks is within my (limited) capabilities. Removing shims sounds easy enough (which shims?). Adding valve float is something entirely new to me. Is there an instructional video or some guidance available somewhere on this?
  2. . Firstly, please note: No "Just trade it for a WR450F" comments please. This bike has sentimental value to me. I bought it off a close friend who was going through a very tough time in his life. It wouldn't be right to sell it. I know he would be disappointed in me. I want to keep it and just make it more suited to my requirements. I have a bog stock 2015 YZ450F that I ride occasionally on grasstrack circuits. These tracks have virtually no jumps, only drops into and out of creeks etc. I also do a bit of riding around my farm on it. Nothing fast, nothing hard. I never ride motocross tracks anymore. Being almost 55 years old and having had and become used to enduro/trail bikes over the past 30 odd years, I'm finding the YZF way too stiff in the suspension for my requirements. My last bike was a WR450F, which was perfect and I wish I still had! I've backed all the damping on the YZF back to a minimum, wound the rear spring preload off to about 115mm sag under my weight (83kg) , which has helped the rear end considerably. It's just the front end I'm struggling with, due to it having no spring preload adjustment, only compression and rebound damping. I've lowered the outer chamber oil level a little, trying to get more compressible air in there in place of non-compressible oil, to little effect. Is it possible to reduce the amount of oil in the inner chambers and achieve the results I'm after? I'm beginning to think I may need lighter springs. The stockers are, from what I can tell through research, 0.50Nm. What spring rate should I be going for to make it more like the front end of a WR450F? Any advice greatly appreciated. Thanks, Greg
  3. Hi Greg, 


        My name is Santiago Lopez and although the chances that you see this email are very few, I'll try my luck here. I'm converting/restoring a WR450F 2014 into a supermotard and after finishing the project, I've realized that the chain slaps the rim sometimes (I'm still stressed because it made some dings in my brand new rim). Is there any chance that you still craft the chain block for this bike? The second and version you've create was incredible. If you have the time, would you craft 2 for me please? I have a friend that is about to start his conversion soon and I'd like to surprise him with this superb solution. Let me know the cost. I'm keen to pay for your time.


    PS: I live in Wellington, New Zealand.



  4. . Thanks for the responses guys! Sadly it appears that I can't buy ColorRite motorcycle paint from the US stevethe. Australia doesn't come up as an option in the Shipping part of their website's "Shopping Cart". On the other hand, we can buy VHT paints here... flyandride, do you recall what colour VHT paint you used? As I said earlier, it's not exactly a black colour, more like a dark grey, so regular matt black wouldn't match.
  5. WR450FGreg

    rear suspension linkage cross reference

    . Can you measure the centres of each bearing on each link to get an idea? If the bearing sizes (ie. inside and outside diameters and lengths) are the same too then it should work fine as far as I know. It's a shame you didn't post this a few weeks ago .... I had the back end of my '08 apart and could have measured my link for you.
  6. . I want to touch-up the clutch and magneto covers on my 2008 WR450F. Does anyone know what paint I can use to do this? It's not exactly a black colour, more like a dark grey. Thanks in advance, Greg
  7. WR450FGreg

    Front springs too heavy for my son.

    . Thanks fgrote. That oil level trick has been around since well before I started racing (which was 1980). Works a treat doesn't it! What's happening is that by increasing the amount of non-compressible oil in there you are effectively decreasing the amount of compressible air. The first 3/4 or so of the stroke is pretty much unaffected, but the last 1/4 or so is when compression of the air really comes into play. Heavier springs are going to affect the whole stroke, which you've worked out already the hard way! By my experience the first place to start with suspension tuning (either end) is to make sure everything is in good condition. ie. fork tubes straight, seals ok, steering head bearings good, etc. On the back end; all bearings cleaned and greased, shock not leaking, nitrogen pressure right etc. If I suspect a lack of maintenance (if its a used bike) I'll sometimes pull the shock apart and service it first. The I move on to spring rates/preload.(where I'm at with Liam's bike at the moment). From there the next step is to begin with factory settings for compression and rebound damping, then start adjusting from there. Always one thing at a time and always taking notes. We'll get there, i just need to get the front race sag set. It would be so much easier if dirt bikes had a bit of fork spring preload adjustment like many road bikes! Greg
  8. . My son has the same problem. (At least I know he'll grow into it I guess. Your wife won't!) I always have a plastic milk crate beside him so he has the extra height to start the bike. Not exactly the safest method, but I try not to start it for him myself. His bike, he starts it! Greg
  9. WR450FGreg

    Front springs too heavy for my son.

    . Ok, I weighed him. He's 40kg, or 88lbs.
  10. WR450FGreg

    Front springs too heavy for my son.

    . I'm guessing his weight remember. I'm also not sure what springs are in it because we bought it used. ..... and another thing, this is an Australian bike so it may well have different OEM springs to US versions. All I know is that there wasn't anywhere near enough race sag at the front when he sat on the bike with all his riding gear on. The back end sag was easy to achieve, I just kept backing the preload off until it was right. Greg