Steel or Aluminium
Discussion
stevesingo said:
Aluminium flywheel...
[pic]http://forum.s14power.com/index.php?attachments/cracked_flywheel-jpg.2044/
Flywheel failed and caused a cracked block, presumably due to the imbalance.
The links don't work and you have to be a member of the site to view them.[pic]http://forum.s14power.com/index.php?attachments/cracked_flywheel-jpg.2044/
Flywheel failed and caused a cracked block, presumably due to the imbalance.
Aluminium doesn't flex much before it breaks and the action of the clutch (especially higher clamping force performance ones) does flex an aluminium flywheel. After it's started to fatigue through that the centrifugal force does the rest.
Although it has to be said Fidanza do sell a lot of flywheels and have been doing for a long time...
Go with steel, you will feel safer and the weight can still be pared down to a very low level.
If you have ever seen the carnage wreaked by a broken flywheel it would be a single brain cell decision, personally I am rather attached to my legs, feet and groin and would hate to see them mashed up.
Dave
If you have ever seen the carnage wreaked by a broken flywheel it would be a single brain cell decision, personally I am rather attached to my legs, feet and groin and would hate to see them mashed up.
Dave
stevieturbo said:
Alloy can work...
Steel does work.
No brainer unless you're really going for extreme weight reduction.
If your going for extreme weight reduction, you want a steel one!Steel does work.
No brainer unless you're really going for extreme weight reduction.
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Max_Torque said:
If your going for extreme weight reduction, you want a steel one!
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Do they make carbon flywheels ?(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
stevieturbo said:
Max_Torque said:
If your going for extreme weight reduction, you want a steel one!
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Do they make carbon flywheels ?(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Max_Torque said:
stevieturbo said:
Max_Torque said:
If your going for extreme weight reduction, you want a steel one!
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Do they make carbon flywheels ?(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
chuntington101 said:
Max_Torque said:
stevieturbo said:
Max_Torque said:
If your going for extreme weight reduction, you want a steel one!
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Do they make carbon flywheels ?(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
(you want the necessary rotating inertia, with the smallest mass, which means you want the maximum proportion of the mass concentrated at a large diameter. But because the middle bit is put in tension by the centripetal forces acting on the periphery, you need as much tensile strength as possible for the "middle bit". Hence using a thin band of very dense material, supported by thin spokes of a lightweight high tensile material. In reality it was wasted effort, because the clutch ended up having enough inertia to act as a sufficient flywheel in conjunction with raising the idle speed a bit)
Max_Torque said:
chuntington101 said:
Max_Torque said:
stevieturbo said:
Max_Torque said:
If your going for extreme weight reduction, you want a steel one!
(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
Do they make carbon flywheels ?(actually, you want a carbon fibre one, but let's not go there ;-)
(hint, consider the difference between rotating inertia and mass, and how they get affected by Centripetal Acceleration.......)
(you want the necessary rotating inertia, with the smallest mass, which means you want the maximum proportion of the mass concentrated at a large diameter. But because the middle bit is put in tension by the centripetal forces acting on the periphery, you need as much tensile strength as possible for the "middle bit". Hence using a thin band of very dense material, supported by thin spokes of a lightweight high tensile material. In reality it was wasted effort, because the clutch ended up having enough inertia to act as a sufficient flywheel in conjunction with raising the idle speed a bit)
Sardonicus said:
So are we saying not to use an alloy fly long term on say a Rover V8 used daily and tracked etc? not that high revving but lots of HP and torque (very large displacment)
We are saying that alloy flywheels have no significant advantages over steel ones, but some potentially major disadvantages. If you want a new, lighter flywheel get a steel one.
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