[Baltimore-Dave]

Do you want a stock engine answer or a slightly modified engine answer?

how does modifying the engine change the RPM in a given gear at a given speed? I can see it if the tires or tranny is changed therefore changing the gear ration, but the engine???

 

[Baltimore-Dave]

how does modifying the engine change the RPM in a given gear at a given speed? I can see it if the tires or tranny is changed therefore changing the gear ratio, but the engine???

Funny you should mention that...because even though my front pulley is 2 teeth smaller, the speedo & tach read the same as before... it's just that the speedo is wrong now. It still says80 @ like 2900 rpm... but I'm really only doing 74-75 mph. 80 mph for real is actually a little over3100 rpm. Evidently the speedometercan't "see" the gearing change (which works out to 7% overall).

That makes sense as the pully changes the gear ratio, but I don't consider that an engine modification. This would give the bike a better low end, but I wouldn't want to increase my highway RPM's. I am still new to Victorys and they like to be rev'd higher than what I am used to, but it is hard to "teach an old dog new tricks"!

 

[Baltimore-Dave]

Do you want a stock engine answer or a slightly modified engine answer?

how does modifying the engine change the RPM in a given gear at a given speed? I can see it if the tires or tranny is changed therefore changing the gear ration, but the engine???

A stock bikes makes about 80-82HP at the tire.
My bike makes 116HP at the tire.
The way I understand it, with more HP at a given RPM, I should be going faster than a stock Vision. Conversely, at a given speed, my bike is working easier so I should be at a lower RPM.

HP and torque do not vary the RPM at certain speeds on bikes that havethe samefinal gear ratio. I saw on another post, at least I think it was you, that stated that "Lloydz changed your timing and therefore the result is a different gear ratio". I am new to this forum but belong to a Diesel forum and an RV forum and you have to be careful answering questions and state them as fact, when they are not. I am not trying to fight here, but I would suggest if you don't know an answer, not typing anything may be better than typing clearly the wrong info. Some people will take it as fact andmake decisions based on false info.
Ride Safe

 

[Baltimore-Dave]

Do you want a stock engine answer or a slightly modified engine answer?

how does modifying the engine change the RPM in a given gear at a given speed? I can see it if the tires or tranny is changed therefore changing the gear ration, but the engine???

A stock bikes makes about 80-82HP at the tire.
My bike makes 116HP at the tire.
The way I understand it, with more HP at a given RPM, I should be going faster than a stock Vision. Conversely, at a given speed, my bike is working easier so I should be at a lower RPM.

HP and torque do not vary the RPM at certain speeds on bikes that havethe samefinal gear ratio. I saw on another post, at least I think it was you, that stated that "Lloydz changed your timing and therefore the result is a different gear ratio". I am new to this forum but belong to a Diesel forum and an RV forum and you have to be careful answering questions and state them as fact, when they are not. I am not trying to fight here, but I would suggest if you don't know an answer, not typing anything may be better than typing clearly the wrong info. Some people will take it as fact andmake decisions based on false info.
Ride Safe

Running amsoil will also change your timing and therefore give you a different gear ratio.

STOP IT!!!!!!!

 

[Baltimore-Dave]

That would explain it. A first to third romp then a first to third romp back and no anchor. When I got back to Lloyd, everyone thought I was smiling about the extended rev limiter, which is a lot of fun. But I was actually grinning about the change in 1st and 2nd. Which to me, someone who used to hit the rev limiter constantly, is a more important change than the limiter. If I had to choose one over the other, I would go back to the old rev limiter and keep my new 1st and 2nd gears.
Thank God I don't have to make that choice.

I give up!!!!