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Caution with the use of dielectric grease, common misunderstanding of proper use. It’s an insulator. Having it on the connection pins is the exact opposite of what you want. Not saying you did… but the way your post is worded… just trying to be helpful.
I recall you saying last year you were done with Austrian bikes. Lol.
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Its all in your mind because you want it to be true.
What do you guys suggest?
Change piston or complete top end at what hour mark?
Change clutch plates at what hour mark? replace with which brand / product?
Hi Everyone, a further update on my problem I encountered, the bike is now stuck with the launch control on and does not come off, whether you change gears to 3rd, 4th it doesn't come off.
Also the orange light flashing indicating launch control is on stays on even when the bike is turned off. The only way to stop it is to disconnect the battery.
On the power tuner app it comes up with Diagnostic Code 13.
Has anyone encountered this or know any solution?
I disconnected the kill/map switch completely and rode the bike and the launch control is still stuck on.
That’s the same error I had. It’s the air pressure sensor.
Thankyou !
Update: mapping switch did nothing to solve the "under load" mid range burble. Only shows problem under load. Going across a flat doesn't show issue which is weird. Anyone having any of the same issues and has come up with a fix?
Have you looked at the injector? I'm having the same issue with a bog and the bike running like the choke is on. Trying a buddies kill switch and fuel tank tomorrow. Checking valves after that....
I have not. Such an isolated issue in the rpm range I figured it's more of an electrical issue. Anxious to heR if that works for you. Mine will mostly exhibit the problem in the mid range under load. Keep me posted and hope ya find the issue!
Anyone notice the revised air intake on the MXGP bikes, looks like they're searching for more air
I am going to add a little comic relief + introspection (I hope):
"The problem with track testing is ..." NOTHING. This IS where the bike is used and this IS where the changes should be felt and assessed.
To Luxon's point - Are there other variables in play? Absolutely. Is it hard (if not impossible) to isolate all of the combined effects? No question. But to discount something a test rider is feeling when they are the "feel" experts? Bad idea ...
Many of us here have deep technical backgrounds of all kinds and most understand the need for an open mind - because usually the things we don't yet understand are not ... well, understood yet.
How many times have you heard "THAT'S IMPOSSIBLE / THAT CAN'T HAPPEN! ... oh wait, the model was wrong ... oh wait, that feature was suppressed, oh wait <insert an infinite # of other unanticipated reasons> ... on and on. I smile every time I hear something Ike that ^^^ or "absurd" or whatever other word the engineer with limited tact chooses. "Stupid" is a good one, too. It never fails that someone bold enough to call others and their ideas stupid is ... well ... I digress.
Your product testers, in this case test riders, should absolutely be listened to. THEY ARE YOUR LIFELINE! Only they can help truly expose the real-world performance "feel" that WE, yes WE, analysts and CAD jockeys can only dream of. Can you ride at the level of Keefer or other factory test riders? Do you think if they can't explain in technical terms that meet an engineer's standards then what they're sensing isn't real? That's crazy thinking ... actually stupid thinking. 😁
I don't know Keefer from Adam, but you can bet your azz that when an expert product tester senses a change, you best listen and have an open mind. Your humility will help you solve problems that others still think are impossible.
Who am I to preach? I'm a VitalMX member, dammit, that's who!
(have a good night guys)
Hasn't everyone, including forum member JM485, been building some sort of solution to get more air into these for years? And this is not really a Yamaha thing. I've seen countless Austrian/Honda/Kawi "more holes in the box" solutions on the racebikes.
Anyone who can give the size of the OEM piston pin? Had my bike apart, but forgot to write down the size 🙃 I’m going to replace the OEM pin soon. I don’t trust it anymore..
And does anyone know when the 2024 YZ’s will be introduced?
My close friend is having the same issue. The bike gurgles under load enough to feel unsafe. After a gurgle yesterday.....the bike's RPM went up and sent him into another rider. Anyone find the solution to this? Map switch was changed for a new one....still has the problem.
Pit Row
You're right, there is no problem with track testing; it's incredibly valuable actually. The problem is in using track testing to definitively conclude that a particular change resulted in a difference in feel simply because something different was "felt". Many times it's quite reasonable to conclude this, particularly if a change is well known and expected to create a different feel. Sometimes it's not (as is the case in question here). The job of the test rider is to relay the change in feel to the engineer. The engineer concludes what changed the feel. But moto isn't exactly at F1 standards of engineering and testing, so here we are debating triple clamp spacers on an internet forum...
It's funny that there's typically no burden of proof for the moto test rider. They simply have to "feel" something, make a conclusion, then tell the world. Simple as that. If they feel it, then it must be true (in some people's eyes, at least).
But if a mechanical engineer says something, it better be backed up with evidence! Who dares go against the great Keefer!? You better have numbers, established scientific theory, analysis, etc. Even then, there will be many who doubt the evidence. And because I'm not as fast as Keefer, what does my opinion matter anyway? LOL
There are many times when engineers have been wrong. I've been wrong my share of times. But those times are typically in rather complex engineering scenarios. Adding spacers to the triple clamp bolts is not even remotely close to one of those situations. This isn't a scenario that's baffled engineers and scientists for centuries, it's arguably quite stupid!
Anyway, I'm open to debating this further if anyone likes. But if so, we should make a dedicated thread about it rather than moving this one further off topic.
Wednesday
Curious on what have been changed on the 450… probably just some mapping en graphics.
Seewer had swingarm with plates welded and new airbox cover to get more air in Lommel round.
There’s a difference between humility and stupidity, you have to pick and choose your battles. Nobody is going to waste their time debating someone about the color of the sky because it’s a known entity, just like the effect of stacking washers under a bolt head is a known entity and well understood. There isn’t wiggle room or grey area here, it’s cut and dry and there’s no interpretation left to debate. If you want to go against what is accepted engineering doctrine just because a test rider told you something that goes against it then have at it, you’re going to end up confused and wasting a lot of time going in endless directions and chasing your tail.
Like Billy said, the lack of burned of proof put in test riders is a little bit crazy. If you give someone blindfolded a thin bar and a thick bar, ask them to bend it, and they tell you that the thin bar is harder to bend (assuming similar material), are you going to put a lot of stock in their results just because they said so or would you use your brain and reason that they might be off on this instance? Feedback is valuable but common sense needs to win out at the end of the day. We don’t build bridges based on gut feel for a reason. . .
I wish Keefer would chime in and just admit he has no idea what he’s taking about and tell you guys how much smarter you are than he is. Maybe that would do it?
Anyone know if the fmf 4.1 silencer for the 2022 fits the 2023
I was in my local bike shop today, owner was telling me a local vet pro just had the rod snap in his 23 yz450f and come out of the cases. I'm not sure how many hours are on the bike but yamaha wanted nothing to do with it. He ended up buying a 2 stroke
And then you read in mxa that yzf450 is the most reliable bike of them all. Wanted to change from austria but reading this stuff the change is off the table.
I've noticed that when MXA gets a theme in their head they run with it for what seems like forever. I've got a 21 yz450f and have been on Yamaha's for the last 10 years but now I'm looking at other brands for my next bike due to these issues
You missed my point.
This is not a "we vs. them" argument.
I was kindly trying to say: be respectful, listen, and you might improve your craft - because around most corners are surprises. Teamwork makes the dream work - embrace the feedback of others you don't necessarily agree with and use it as a calibration. There's value there, really!
To be honest, I was rying to throw you a bone. An opportunity to take the high road and not turn me and others off of your company because I think your products are innovative and the industry can always use this.
But instead you went down this "burden of proof" hole and opened things up further. You use words like "stupid" and "absurd," etc. Strong company leaders don't do that. So don't. Help us help you grow - and up the professionalism.
Stop digging and continue some kicka$$ engineering.
The only reason I even waste my time with a response like this is that I often mentor engineers and engineering management. It's a serious disservice to them to perpetuate this "us vs. them" mentality - especially given many in this forum are going to school now to be MEs, EEs, etc. Everyone on the development team has value and biases, embrace them and make them superpowers. You can - it works - and it works amazingly! This is the last I will say on this, but I lost a lot of respect when you started slinging mud. Not cool - regardless of your opinion. Instead use your intelligence to offer another point of view and promote collaboration, not division. If you grow your company much, your demeanor and treatment of dissention will be CRITICAL to your success. Trust me.
DM me if you want to discuss this further.
1 more thought regarding your business:
There are people on these forums with significant influence regarding outsourcing of engineering. Let's take Illumina as an example. Let's say you're contacted by Supply Chain as a potential outsourcing option for a subsystem for the NovaSeq X product line. The Supply Chain guy contacts the Director of Engineering and says here are a few design houses that may be able to help. The DoE says "Luxon? I think he does moto parts, too. Interesting, but he seems difficult to work with. I don't want to be arguing with our partner about design decisions our organization made a long time ago that he doesn't agree with. I just need this design fixed. Next." And just like that, you're out.
Summary: There seems to be many facets to consider.
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