Picco 2011 TORQUE onroad engines
02-14-2011, 10:33 AM
#16
It makes perfect sense if you know Picco history. They used to have a flat slide carb they called a "torque" carb. He was just saying it is named after that old, and quite infamous carb.
02-14-2011, 10:37 AM
#17
You quickly get to a point of diminishing returns with any engine design. You can build a very basic, easy to produce engine that can get 99% of the possible HP, or you can spend twice as much to get that last 1%.
02-15-2011, 06:30 AM
#19
It's not really necessary on any engine. It has very little benefit (though probably some) and adds considerably to the price of the crank.
You quickly get to a point of diminishing returns with any engine design. You can build a very basic, easy to produce engine that can get 99% of the possible HP, or you can spend twice as much to get that last 1%.
You quickly get to a point of diminishing returns with any engine design. You can build a very basic, easy to produce engine that can get 99% of the possible HP, or you can spend twice as much to get that last 1%.
02-15-2011, 07:25 AM
#20
02-15-2011, 09:26 AM
#21
I have done a fair bit of dyno testing with the tungsten slugs...they definitely make a noticeable improvement on the engines ability to carry power in the upper end....Quite a few engines start shaking in the upper RPM which absolutely kills its ability to make power in the upper end..adding the Tungsten seems to reduce the vibrations in the upper RPM's which allows the engine to retain power better and spin to a higher RPM...
02-16-2011, 05:30 AM
#23
Tech Initiate
I have done a fair bit of dyno testing with the tungsten slugs...they definitely make a noticeable improvement on the engines ability to carry power in the upper end....Quite a few engines start shaking in the upper RPM which absolutely kills its ability to make power in the upper end..adding the Tungsten seems to reduce the vibrations in the upper RPM's which allows the engine to retain power better and spin to a higher RPM...
I see these tungsten inserts as the current "must have", no doubt the fad will pass.
02-16-2011, 06:22 AM
#24
Using a heavier flywheel will have the same effect. By adding the tungsten inserts you are not magically improving crank balance but merely increasing the rotating weight and the damping effect.
I see these tungsten inserts as the current "must have", no doubt the fad will pass.
I see these tungsten inserts as the current "must have", no doubt the fad will pass.
02-16-2011, 07:33 AM
#25
Tech Initiate
I will disagree here.......I will not divulge all the results of my testing...But I will say with 100% certainty that the slug definitely adds top end power and reduces the vibrations in the engine.......I did multiple dyno tests on several engines..tested without slug, then retested the same day with the slug....Not only did the power after peak improve, there was also a noticeable reduction in the engines harmonics at higher RPM's...Not only did the engine carry power better after peak, it also pulled the dyno several thousand RPM higher before maxxing out....Adding a heavier flywheel has no such effect and showed absolutely zero difference on the dyno....... I wont pretend to know all the reasons why, but I can definitely verify the results with 100% certainty on the dyno....
The extra weight may be allowing the engine to reach higher rpm and/or altering the point/s in the rev range where resonance occurs but there is always a trade off.
You can not "fix" engine balance, all you can do is alter the out of balance points to a range that suits the characteristics of the engine.
02-16-2011, 12:35 PM
#26
The extra weight will not add power but I do not doubt when you say the dyno shows the engine producing more power and revving higher.
The extra weight may be allowing the engine to reach higher rpm and/or altering the point/s in the rev range where resonance occurs but there is always a trade off.
You can not "fix" engine balance, all you can do is alter the out of balance points to a range that suits the characteristics of the engine.
The extra weight may be allowing the engine to reach higher rpm and/or altering the point/s in the rev range where resonance occurs but there is always a trade off.
You can not "fix" engine balance, all you can do is alter the out of balance points to a range that suits the characteristics of the engine.
02-21-2011, 01:48 PM
#28
Tech Master
I agree with Maximo on the slug story.
I had a kangarooe engine that i snapped the crank, it broke were the screw holds the flywheel. I had a Crono RS7 crank that was not slugged. Modified it to exact same timingnumbers that the kangaroo engine had. That enigne was never any good until i got a new crankshaft with sluggs. It missed a whole lot of revs on top and i never got the speed out of it.
>With a new crank evrything was back to normal. Do not need no dyno to find that out, just another crank without slugs and a 360 degree wheel, ohh and a dremel, lol
I had a kangarooe engine that i snapped the crank, it broke were the screw holds the flywheel. I had a Crono RS7 crank that was not slugged. Modified it to exact same timingnumbers that the kangaroo engine had. That enigne was never any good until i got a new crankshaft with sluggs. It missed a whole lot of revs on top and i never got the speed out of it.
>With a new crank evrything was back to normal. Do not need no dyno to find that out, just another crank without slugs and a 360 degree wheel, ohh and a dremel, lol
02-24-2011, 06:13 AM
#29
Tech Master
Using a heavier flywheel will have the same effect. By adding the tungsten inserts you are not magically improving crank balance but merely increasing the rotating weight and the damping effect.
I see these tungsten inserts as the current "must have", no doubt the fad will pass.
I see these tungsten inserts as the current "must have", no doubt the fad will pass.
02-24-2011, 09:32 AM
#30
The extra weight will not add power but I do not doubt when you say the dyno shows the engine producing more power and revving higher.
The extra weight may be allowing the engine to reach higher rpm and/or altering the point/s in the rev range where resonance occurs but there is always a trade off.
You can not "fix" engine balance, all you can do is alter the out of balance points to a range that suits the characteristics of the engine.
The extra weight may be allowing the engine to reach higher rpm and/or altering the point/s in the rev range where resonance occurs but there is always a trade off.
You can not "fix" engine balance, all you can do is alter the out of balance points to a range that suits the characteristics of the engine.
I thought the weight is for dynamic balancing.
