Re: Wheels - What's 1 KG Weight Savings Equivalent To?
I Am Cuntfused !!!
I Am Cuntfused !!!
Wheels - What's 1 KG Weight Savings Equivalent To?
- Thread starter kenntona
- Start date
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Yes for all situations where the wheels are rotating at close to road speed, then the factor is between 1.5 and 1.8 for practically all types of wheels and tires. To narrow it further with a specific wheel-tire combination, run the trifilar pendulum test I described earlier, or even a normal pendulum test.
===
Separately, wheel stiffness is the other factor that has to be thought about for track application esp with better tires. No point being ultra light when you lose camber through wheel deflection.
Yes for all situations where the wheels are rotating at close to road speed, then the factor is between 1.5 and 1.8 for practically all types of wheels and tires. To narrow it further with a specific wheel-tire combination, run the trifilar pendulum test I described earlier, or even a normal pendulum test.
===
Separately, wheel stiffness is the other factor that has to be thought about for track application esp with better tires. No point being ultra light when you lose camber through wheel deflection.
JuzzforCars
Well-Known Member
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
More maths... Arrrrgh...
More maths... Arrrrgh...
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Now I know that even if my wheels are each 2 kgs lighter than Sam's, I still cannot beat him to the weight-reduction ratio.
Must mod driver liao.......
No choice. Cause many drivers claimed wheel's weight is so important and what not......snowdog said:
Now I know that even if my wheels are each 2 kgs lighter than Sam's, I still cannot beat him to the weight-reduction ratio.
Must mod driver liao.......
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Thats why. U should use my HRE rims
Haighh...from a factor of 6.5 becomes 1.5 !!!! WT$
Thats why. U should use my HRE rims
Haighh...from a factor of 6.5 becomes 1.5 !!!! WT$
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
yes flex..
i think the higher ratios of wheel-to-sprung-mass equivalency came from people making assumptions after seeing calculations for rotating masses like the flywheel, etc. and applying it to the wheels as well when they are separate things. Wheels are different because they do not rotate at different speeds vs road speed. Wheel speed for all situations outside of launch tire slip, shift tire slip, and braking tire slip, is fixed to road speed.
yes flex..
i think the higher ratios of wheel-to-sprung-mass equivalency came from people making assumptions after seeing calculations for rotating masses like the flywheel, etc. and applying it to the wheels as well when they are separate things. Wheels are different because they do not rotate at different speeds vs road speed. Wheel speed for all situations outside of launch tire slip, shift tire slip, and braking tire slip, is fixed to road speed.
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Then it makes no sense to switch to lighter rims for 1 kg weight savings but add a 10 kg sub-woofer and 2 amps behind the trunk........
Okay, will switch to MacDonald's Mega Mac soon.....TripleM said:
Then it makes no sense to switch to lighter rims for 1 kg weight savings but add a 10 kg sub-woofer and 2 amps behind the trunk........
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Well while overall weight maybe more with all those ICE set ups, that is static weight increase and it's sprung as opposed to reduction in real un-sprung weight and rotational mass which IMO, give more satisfactory gains for driving enjoyment in terms of acceleration, deceleration and general handling.
kenntona;402310 said:
Well while overall weight maybe more with all those ICE set ups, that is static weight increase and it's sprung as opposed to reduction in real un-sprung weight and rotational mass which IMO, give more satisfactory gains for driving enjoyment in terms of acceleration, deceleration and general handling.
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
So now you are saying 1kg reduction on the unsprung weight and rotational mass is better ("more satisfactory gains....") than X kg reduction on overall sprung weight, even though 1 kg reduction in wheel weight savings can bring about the same effect as X kg of overall weight reduction?TripleM said:
Re: Wheels - What's 1 KG Weight Savings Equivalent To?
Hiadees,
Anti roll bar = sprung or unsprung ?
Hiadees,
Anti roll bar = sprung or unsprung ?
