PVL

[srp]

I have been running PVLs for years and have dynoed them against stock ignitions and there is not a nickels worth of difference between them unless you had a problem with one or the other to began with. PVLs have less rotating mass and makes launching in second gear with a lot of paddles difficult. But if you are launching in first they are awesome. PVLs need to have the wires going to the coils supported at the coils to keep the wires inside at the connectors from losing continuity( zip ties work good). Hard to start is a under statement and that is why I am back to stock ignitions. A word of advice if your are running PVLs is to buy one spare primary coil and one spare secondary coil because they do go out regularly.

[banshee332]

I have always had luck with pvl's. the one on the cub I have had for about 6 years with out one problem. I have another pvl thats going on the 20mill dmx that has worked great in the past as well. Just make sure they are hooked up right and grounded well. for 500ft we run tall gearing and never really had a problem launching even in second gear.

[NOS_350x]

Its not just drag bikes.

 

I Really, Really liked the pvl on my flattrack banshee over the stock system.

 

I am not currently running one because i went through about 5 of the stator type coils.

[srp]

I have always had luck with pvl's. the one on the cub I have had for about 6 years with out one problem. I have another pvl thats going on the 20mill dmx that has worked great in the past as well. Just make sure they are hooked up right and grounded well. for 500ft we run tall gearing and never really had a problem launching even in second gear.

I agree that they are good and if you can launch in second and not ever bog they are an advantage for the racing we do. If you are getting 6 years out of them you are doing something right. What about starting?

[srp]

Its not just drag bikes.

 

I Really, Really liked the pvl on my flattrack banshee over the stock system.

 

I am not currently running one because i went through about 5 of the stator type coils.

 

I can see why they would be good on a flattrack. The light flywheel makes them explosive rolling on the throttle. I have had luck like you on reliability and I really take good care of my stuff.

[banshee332]

I agree that they are good and if you can launch in second and not ever bog they are an advantage for the racing we do. If you are getting 6 years out of them you are doing something right. What about starting?

 

starting has never been a problem nither. what you have to do is just push down on the kicker a few times slow, make sure your chokes are on. if your good you can tell when your one cylinder is at the top of its stroke and give it a full hard kick. every bike I have had pvls on only took 3-5 kicks to start. Now the cranker was a pain to get fired. This was starting with alky aswell. bike sat for a few weeks did the same process fired right up

[srp]

starting has never been a problem nither. what you have to do is just push down on the kicker a few times slow, make sure your chokes are on. if your good you can tell when your one cylinder is at the top of its stroke and give it a full hard kick. every bike I have had pvls on only took 3-5 kicks to start. Now the cranker was a pain to get fired. This was starting with alky aswell. bike sat for a few weeks did the same process fired right up

Lectrons I have are old and the chokes don't want to stay up and that is not helping things when I have the PVL on the bike.

[J-Madd]

I have been running PVLs for years and have dynoed them against stock ignitions and there is not a nickels worth of difference between them unless you had a problem with one or the other to began with. PVLs have less rotating mass and makes launching in second gear with a lot of paddles difficult. But if you are launching in first they are awesome. PVLs need to have the wires going to the coils supported at the coils to keep the wires inside at the connectors from losing continuity( zip ties work good). Hard to start is a under statement and that is why I am back to stock ignitions. A word of advice if your are running PVLs is to buy one spare primary coil and one spare secondary coil because they do go out regularly.

 

 

I couldn't agree more. Even when a PVL component goes out, you don't always know what has gone bad. The will often ohm in spec even when bad. I had zero problems launching or starting on my unported 421 Cub with the pvl. BUT The coil wires were constantly coming loose, coils and stators constantly going bad. I don't have a PVL on anything now, but I have a box full of PVL parts - most of which are good; just don't know which ones. THe timing on the PVL is static across the entire RPM range (unless you get the expensive programmable version.) That is - the timing doesn't retard as the rpms increase, helping the motor to rev out. If you have it a x mm btdc/+7 degrees its' still at +7 at 10,000 rpms. The stocker goes to 6 degrees under what it was at startup at that rpm. There was ZERO difference on that motor at the track vs stock ignition.

[sandman81]

Thanks guys i appreciate all the help. I guess no plans of a pvl for now.

 

Damn J-Madd, got some pics of the chrome bike in your sig, looks sick.

[J-Madd]

http://bansheehq.com/forums/index.php?showtopic=131363

[misterww225]

When starting from a dead stop, larger flywheels are used to store kinetic energy to supplement the engine's torque. When you dump the clutch, the energy stored in the flywheel will tend to keep the engine RPM constant, therefore giving a harder launch. When shifting from gear-to-gear, the RPM will, again, tend to stay constant, which gives you a "jump" when shifting. The down side of a heavier flywheel is that while in a gear the engine will rev more slowly, as it is storing energy into the flywheel. Since, as mentioned earlier, drag racing is all about the launch, a heavier flywheel, not a PVL or shaved flywheel, will benefit you.