Neil86

I'm wondering if the R/R in its stock position and running the higher amps of the HO stator just runs too hot and fries its brains.

the Dyna 3000 gives different advance curves and rev limiter settings, I think it fits the early Royal Star too. You choose from 8 or so advance/limiter maps in the unit.

Note the model year of the quote.....it indicates Yamaha had rev limiter back in 1990 on the Venture. I believe the Royal Stars had lighter valve springs than the 1st gens. One reason for a conservative rev limiter on the RSV might have been the 5 year warranty. Note sure what year Royal Star you were trying...the early 96 Royal Stars had 28 mm carbs the Royal Star Venture 32 mm....think some of the folks here have swapped them out on the early Royal Stars

FWIW....in 1990 Yamaha went to digital ignition on the Venture (different TCI, pickup coil and rotor) in the supplementary factory service manual outlines the changes from previous models heres how digital ignition operation is described...

You want to make sure you have good ignition on the 2 dead cylinders before going further.

Its normal for the exhaust to be rich on deceleration, so there can be unburnt hydrocarbons in it....thats why the AIS is designed to cutoff under high intake vacuum. Are you certain the cylinder that had no change when you opened the cap is even firing?

Go to the "Handlebar Cable" page..... Note that the early standard non cruise (4 cable)Ventures had a slide arrangement vs the wheel for the 5 cable cruise models.

If you go over to your other mystery hose thread, theres a Tech Library link showing where the air enters the exhaust. Since parts of the AIS are removed on your bike you need to make sure the plugs on your bike are even in the right spot....ie you might have a plug upstream of missing parts.

my point is it could be in the cables or the junction point.....84 (and your 83 and a arf...)up its a wheel that rotates in the junction.

Ok...I mean slow to return to idling speed....not stuck..if you have verified its still off the stop, its the cables or linkage. Regarding the cables, you realize there are 4 cables and an intermediate junction box. (actually 5 cables if the bike has cruise) 2 upper cables (from throttle grip to junction) 2 lower cables from junction down to carb 1 cable from cruise actuator to junction

Next time the idle seems to be hanging up.....inspect the linkage to see if the linkage is resting on the idle stop screw (the one that you turn with 2 fingers. if its already resting on the screw....its likely a vacuum leak causing the slow return to idle.

OK.....unless you have traced the hose to ensure where it goes.....don't hook it up to the synch port.....you could be creating a vacuum leak if the other end is open...or worse its an unrelated drain or vent hose that you are now drawing vacuum on.

Thanks!

You might want to check your mystery hose thread........

Isn't there a base setting that is close to stock on the timing but bumps the rev limiter? I thought DYNA didn't recommend the other settings on a stock bike.

There are 2 hoses at intake synch ports (#2 and #3 cyls) on a stock RSV. One goes down to the AIS air cutoff valve for the front exhaust ports, one goes down to the AIS air cutoff valve for the rear exhaust ports. You should trace out the AIS system....high vacuum shuts off the air induction so if they only unplugged the vacuum hoses to try and deactivate AIS they actually keep it active at all times and that might explain your ongoing exhaust popping. It might be something else...in any case you want to trace out the hose to where it ends. Heres an article on the AIS for you. http://www.venturerider.org/forum/showthread.php?t=485

Can you get back into neutral with the engine off?

Gary.... what about the rotor differences?

update: Mxvet tried his good VMax TCI and now gets more regular sparks, but some pauses. Even though the pickup coils are the same, Venture and VMax rotors are different and of course TCI. Does it sound reasonable that the signals the Venture rotor is sending to the VMax TCI aren't right so the VMax TCI is shutting down then detecting rotation and restarting again. Has anyone tried this combo before with same results?

So is Dyna curve #1 stock settings.....did you try it set on 1?

Does this thread help? http://www.venturerider.org/forum/showthread.php?t=42721

Kevin... didn't Progressive at one time just sell a heavier spring for the Yamaha monoshock in addition to a complete monoshock....maybe thats what Doug has on the ebay find.

They are typically installed in the left saddlebag..... this thread discusses it http://www.venturerider.org/forum/showthread.php?t=63049

I think doing the conversion back at the trunk rack is the simplest method. Leave the rear shock as is unless you discover it will not hold air.

Put the stock igniter back in...if the off idle issue goes away its the Dyna. Does the Dyna have any diagnostics available via the USB or is it strictly for changing the curve settings? Do you have a tachometer to show if idle speed is same with either igniter?