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Its all fun. I kind of self learned a lot of this, I really only trail ride, but I have 3 riding buddies with similar set ups to mine, and few sidewinders friends as well, so I really enjoy trying to get everything fine tuned as much as possible to have the edge on them. I was getting frustrated...

Closed loop boost control tells you immediately on the first run where your base line duty cycle should be. Its all in the data log, if you have it set at 60%, and after 2-3 seconds closed loop control settles it at 64% duty cycle, you just set the aim to 64%. It seems brent has his boost well...

There is an aim duty cycle for the boost controller. It can be adjusted easily, but pid is what controls the closed loop boost control, If pid is a little off it cause boost to fluctuate for a short period of time. As you stated the diaphram has a reaction time, also the acceleration and...

Have you watched to motec webinar about pid. These are the three parameters the motec uses for boost control. Another thing to look at that had a major effect on initial overboost is the margin setting, margin determins when the boost controller becomes active. If margin is set to close to aim...

Another option if you dont want to go crazy with studs is to delay max boost for a small period of time. This can be set up easily in the motec. I have spent hrs looking at data logs that show what you are describing. Using the race time function you can reduce max boost. For example you could...

You gotta realize that most big power apexs and nytros were basically one off expensive builds by guys who understood the clutch maintenance required, with the ease of getting 270 hp from a sidewinder, many guys just assume they are still a turn key sled... this is not the case. Rollers and...

Tapp clutch is very shiny

Why is a floating secondary a bad thing?

Pretty impressive to run with a motec 1200, gotta be making some serious power!! The tuned winders must have been bus lengths behind, who’s tunes were they running?

What do you estimate the power to be, has martin calculated mass air flow?

That doesn’t give you any options does it

I believe brent got his setup to work without changing the rollers. A smaller diameter roller essentially puts your cam arm in a higher starting position, the same as adding a shim behind a the spider of a clutch which allows for shims. This gives the weight more leverage at lower shift ratios...

Well I know the triggers are a carbide stud, and they probably hold up pretty well. I was curious more about the mega bites because I always considered it more of a really tuff trail stud as it has a really thick profile. I used to run roetin hornets, which are similar to Triggers and we used to...

Do the mega bites work good on ice? I been thinking about installing triggers, but they don’t last long trail riding

I struggled with rpms to high at the start of a run, then dropping. Took me a while to figure it out. I had to add shimms to the spider on my stm clutch, I know that you cannot add shims to yamaha clutch, however you can use smaller diameter rollers which have the exact same effect. This is a...

If the little mark on the upper ring is from the hammer and chisel, then you are hitting the wrong ring, not trying to be a smart #*$&@, just appears that was the one being hit.

How many studs do you have total?

Y It should be possible with a larger turbo that is operating within peak efficiency range at 300 hp on this engine, might also need better intercooler. Maybe like a gtx2863 gen II.

If it’s 79.8 degrees, that’s only 11 degrees less that 90, which would be the theoretical WOT, It seems logical that the butterfly could sit at 11 degrees when at idle position, it’s possible that Yamaha only reads actual movement of the butterfly, which would never reach 90 degrees of total...