50 votes
Accepted

What are the benefits of a lightweight flywheel and why aren't they lightweight already?

The main advantage to a lower flywheel mass on race cars is that the reduced mass allows the engine to rev more freely. The overall weight loss to the car is really not the key thing, it's letting the ...
user avatar
  • 9,286
28 votes

What are the benefits of a lightweight flywheel and why aren't they lightweight already?

cdunn's answer is spot on. To add a bit (especially for cars), in a race car you often want to be dropping from something like 7000 rpm to maybe 5500 rpm (or an even higher band, depending on the ...
user avatar
  • 682
16 votes
Accepted

What are the differences between a dual mass flywheel and a standard flywheel?

A dual mass flywheel (or DMF) is a flywheel that is split into two halves (hence the name...), with a spring or springs between them to dampen out sudden changes in torque and rotation speed, and thus ...
user avatar
  • 28.6k
15 votes
Accepted

What does a flywheel do and what is it connected to?

A flywheel serves four main purposes (in most vehicles): It provides mass for rotational inertia to keep the engine in motion It is specifically weighted to provide balance for the crankshaft It ...
user avatar
13 votes

What are the benefits of a lightweight flywheel and why aren't they lightweight already?

Physics dictates that rotational inertia impedes acceleration... which is why a lighter flywheel is considered to be a performance mod Less rotating mass = more acceleration, if all else is equal ...
user avatar
  • 39k
11 votes

What are the benefits of a lightweight flywheel and why aren't they lightweight already?

The flywheel keeps your engine spinning The inertia of a flywheel is in direct proportion to the mass of the flywheel. Newton's first law of motion states, "An object at rest stays at rest and an ...
user avatar
  • 32.8k
11 votes

What does a flywheel do and what is it connected to?

This is addition to Paulster's answer. Here's an animation The disc in Grey is the flywheel Wikipedia provides a good general outline - A flywheel is a rotating mechanical device that is used to ...
user avatar
  • 2,186
11 votes

What are the differences between a dual mass flywheel and a standard flywheel?

The dual mass flywheel is typically misunderstood by a number of people. It's function is not to provide a smooth ride but is actually designed to protect the gearbox from destruction. My car, a run ...
user avatar
10 votes

What are the differences between a dual mass flywheel and a standard flywheel?

Adding to what Nick and Steve have said. Consider the millisecond-by-millisecond operation, and that the rated torque is an average over the engine cycle. In fact the engine is producing large spikes ...
user avatar
9 votes
Accepted

What exactly is a clutch?

In general, a clutch is a part which allows to connect / disconnect two shafts also while they are rotating. The most simple clutch consists of two discs, each firmly attached to one shaft. Press ...
user avatar
  • 7,017
9 votes

What are the benefits of a lightweight flywheel and why aren't they lightweight already?

One thing which hasn't been mentioned here about why a lightweight flywheel may not necessarily be a good thing for the street is, just like brakes, the rotational mass of a regular weight flywheel ...
user avatar
8 votes

Software solutions to lighter flywheel issues

Well for one thing the mass of the flywheel is what it is because manufacturers have to strike a balance between performance and drive-ability and emissions figures. A lighter flywheel would require ...
user avatar
5 votes
Accepted

Software solutions to lighter flywheel issues

The hardest part of a lightweight flywheel is getting used to taking off. Its like learning to drive a stick again. You need to rev it a bit more, or you will stall. There may be some 'Anti stall ...
user avatar
  • 8,413
5 votes

Why is a flywheel important to a car?

A flywheel is used to even out impulse, and to store energy (these are both the same thing in reality) An engine, especially when running slowly (such as when starting) has relatively large impulses ...
user avatar
  • 18.5k
5 votes
Accepted

Does the flywheel really complete 33 revolutions per second when the engine is set to 2,000 RPM?

yes, that's correct. Now, rotating a flywheel at 2000 rpm is not a big deal: it's well within the capabilities of the material, as long as the flywheel is well-balanced. Other elements in the engine ...
user avatar
  • 4,412
4 votes

What exactly is a clutch?

A clutch works in exactly the same way as your brakes. The flywheel is just a big metal disk at the end of the crankshaft. Your clutch plate is a round piece of friction material (just like a brake ...
user avatar
4 votes
Accepted

What does it mean to "chirp" a gear?

Chirp is in reference to the noise the drive tire makes when it slips a little bit when engaging the clutch from one gear to another.
user avatar
  • 7,950
3 votes
Accepted

Optimal clutch engagement speed at wide open throttle

The only noticeable clutch wear occurs when you're getting the car moving from a stop, where the weight and momentum of the engine is using the clutch to get the weight of the vehicle moving. When ...
user avatar
  • 6,017
3 votes

What exactly is a clutch?

To add a bit to Sweber's post. There are also multi-plate clutches that are you used in most motorcycles and very frequently in automobile racing like IRL and F1. A good video on multi-plate ...
user avatar
  • 32.8k
3 votes
Accepted

How to manually turn the flex plate on an Automatic Transmission

I never use the tool, there's never enough room to get it in there. I use a screw driver/pry bar to turn the flywheel/flexplate by the teeth. You should be able to do that once you get the cover and ...
user avatar
3 votes

Does the flywheel really complete 33 revolutions per second when the engine is set to 2,000 RPM?

RPM stands for ROTATIONS PER MINUTE. Converting to RPS (rotations per second) means you divide RPM by 60 (because there are 60 seconds in a minute) and you get RPS. So your question on 2000 RPM ...
user avatar
  • 9,469
3 votes

clutch flywheel

Generally with parts like this you will find only OEM parts and possible some high-performance units, which are likely more expensive than the OEM ones. Have you checked local junkyards or EBAY for a ...
user avatar
  • 9,469
2 votes

Why is a flywheel important to a car?

I was under the impression the purpose of the flywheel was to assist the starter pinion gear to start your motor: So every time you turn your vehicle the starter motor would rotate the gear which ...
user avatar
2 votes

Lighten flywheel to increase top speed?

Flywheel weight will not impact the power output of your engine. The mass of flywheel will change the rate of change of speed of the engine: A heavy flywheel will mean the engine is slow to speed up ...
user avatar
2 votes
Accepted

Did I damaged my engine trying to remove the flywheel nut with resistance on the pto coupler?

More than likely you've just backed the PTO sprocket off of the drive shaft of the PTO itself. I'd suspect if you dismount the PTO (if you can easily) from the engine, you'll be able to see what you'd ...
user avatar
2 votes

Clutch problems

By what you describe its highly unlikely that the clutch is at fault here.. To me too it sounds like either the clutch master cylinder is sticking or the clutch pedal mechanism is at fault.. Or ...
user avatar
  • 5,037
2 votes

Effects of the flywheel having broken teeth, Toyota Camry

A broken tooth or teeth on the flywheel will cause issues when engaging the starter. it will slip and possibly damage the starter. The easiest way to test the starter is to remove it and take it to ...
user avatar
  • 8,413
2 votes

2003 Honda CRV grinding noise from starter - possible flywheel damage?

If the starter is the correct one and is fitted correctly then it sounds as if there are flats on the ring gear, this is a circular gear that is fitted to the flywheel. If the noise is as bad as you ...
user avatar
  • 5,037
2 votes

How to stop flywheel from spinning without special tools?

The Internet wasn't helping me much on this one, so I came up with a trick: Put one of your pressure plate bolts into the flywheel (so the head is flush with the flywheel, but it doesn't need to be ...
user avatar
  • 97
2 votes
Accepted

Why doesn't a car move when in neutral?

Does that mean the flywheel (which is connected to the engine) rotates at 800 revolution per minute while in neutral? Yes. The flywheel is directly connected to the engine so it will rotate at ...
user avatar

Only top scored, non community-wiki answers of a minimum length are eligible