trigger wheel

[valkyrie831]

will a trigger wheel make a big difference in a interstate

[Patrick]

Nope.. I went thru the trigger wheel thing way back when.. I don't really like them.. These engines don't like a lot of ignition advance.. A couple extra degrees in the low to mid range probably won't hurt,, but,, it doesn't help much either.. A lot of folks will disagree with me on this issue[as well as others],, but,, one thing I've found over the years is that the butt dyno lies.. Some folks have found that they can still use low octane fuel with the aftermarket trigger,, but,, some have had to use higher octane fuel..

[Brian]

I have the 6 degree wheel on my 97 standard, it sure helped the low end when I first got this bike on the road after sitting for over two years. Now that I have the bike running well and 15,000 miles since redoing the carbs I am considering going back to the OEM wheel when I do the winter maintenance. Some say the interstate already has 2 degrees built into the ICM and that only a 4 degree wheel should be used. Others here like the electronic iginition advance that is posted in the shoptalk section.

FYI, my 97 runs fine using reg gas with the 6 degree wheel.

[Valkpilot]

...one thing I've found over the years is that the butt dyno lies...

 

Amen.

[Brian]

There was no butt dino involved in my comment. The bike did a lot stumbling starting to move without a lot of throttle. The carbs were very gumbed up, I had cleaned them many times without changing the jets. The trigger wheel helped with this condition. I had aslo run a lot of techron and other cleaners through the gas tank, she is now running like a swiss watch and want to go back to  the factory settings checking the valve adjustments, carb synch. and pilot screw settings. I bought this scooter not running, having to completely reseat all the valves by hand grinding due to a lot of carbon built up to the point that the compression test revealed three bad cylinders, and naturally they were not on the same side. I have never knew what this bike will do set up like mother Honda intended. So I plan to go back to basics.

[art]

I have a 6 degree tw and have for over 110000 miles on a 02 standard .I use 87 oct. and the valk runs great,no ping and it will smoke my CT easy

[Hoser]

Nope.. I went thru the trigger wheel thing way back when.. I don't really like them.. These engines don't like a lot of ignition advance.. A couple extra degrees in the low to mid range probably won't hurt,, but,, it doesn't help much either.. A lot of folks will disagree with me on this issue[as well as others],, but,, one thing I've found over the years is that the butt dyno lies.. Some folks have found that they can still use low octane fuel with the aftermarket trigger,, but,, some have had to use higher octane fuel..

+1 on the butt dyno. You won't know till you make a real dyno run. Then post it if you want. I post it every time I get the chance, kinda proud of the old bonestock fatlady.   Hoser

[Brian]

Hoser,
I am assuming this is a before and after graph? The after being the lines that shoot straight up. I have never had my bike on a dyno or know anyone that has. For a newbie on this issue can you explain what the TW did to improve the performance?

Thank you,

[Hoser]

Most dyno runs consist of three runs, one after another.  I have found that the second is usually the best.  I have no mods to the trigger wheel.  Other than cut piggies and rear baffles drilled and Grumpy's tips on the exhaust, my bike is stock, I  use 87 octane fuel and sometimes 89 octane E10 if regular is not available. The more vertical lines are torque curves the more gradual rise are horsepower curves.  Max torque is about4500 rpm, max HP about 6000 rpm.  The colors are the individual runs. The vertical lines   indicate the Valkyrie develops torque quickly, the acceleration  you feel  about 3000 to 4500 rpm when riding.  Dyno runs are run in 5th gear from about 2000 rpm.  Hope this info helps.     Hoser

[Jess from VA]

will a trigger wheel make a big difference in a interstate

I have two interstates, one with the 4* and one without.  No dyno, but the one without (lower miles) has always run better than the one with.  And I need premium to make the 4* not knock (unless I am just putting around, which is almost never).  It may be there were other issues involved with the knock (valves).  Save your time and money for something worth something (like a complete desmog, valve check, carb synch, new intake orings, a clean air cleaner and plugs).

[Brian]

Most dyno runs consist of three runs, one after another.  I have found that the second is usually the best.  I have no mods to the trigger wheel.  Other than cut piggies and rear baffles drilled and Grumpy's tips on the exhaust, my bike is stock, I  use 87 octane fuel and sometimes 89 octane E10 if regular is not available. The more vertical lines are torque curves the more gradual rise are horsepower curves.  Max torque is about4500 rpm, max HP about 6000 rpm.  The colors are the individual runs. The vertical lines   indicate the Valkyrie develops torque quickly, the acceleration  you feel  about 3000 to 4500 rpm when riding.  Dyno runs are run in 5th gear from about 2000 rpm.  Hope this info helps.     Hoser

So this is a stock set up only run test? I have done the piggie thing and first baffle drilling too. I have also polished the inside of the intake tubes.

Thanks Hoser.

[Hoser]

Most dyno runs consist of three runs, one after another.  I have found that the second is usually the best.  I have no mods to the trigger wheel.  Other than cut piggies and rear baffles drilled and Grumpy's tips on the exhaust, my bike is stock, I  use 87 octane fuel and sometimes 89 octane E10 if regular is not available. The more vertical lines are torque curves the more gradual rise are horsepower curves.  Max torque is about4500 rpm, max HP about 6000 rpm.  The colors are the individual runs. The vertical lines   indicate the Valkyrie develops torque quickly, the acceleration  you feel  about 3000 to 4500 rpm when riding.  Dyno runs are run in 5th gear from about 2000 rpm.  Hope this info helps.     Hoser

So this is a stock set up only run test? I have done the piggie thing and first baffle drilling too. I have also polished the inside of the intake tubes.

Thanks Hoser.

Keep in mind that atmospheric conditions, state of tune, dyno operator, etc can affect dyno results, if I ever dyno it again it may have different results.  That is why racers do lots of dyno runs. They want to optimize  performance for every race condition they can.  Hoser