I have watched springs moving at various frequencies and loads with a strobe light and it was very interesting. I couldn't help noticing the monogrammed title on the right side of your lab coat, nice touch doc!
Have a 16 ND club and have been on the fence with the Fox vs Ohlin debate for a while but leaning towards the foxes for the travel, any idea when these might be back in stock? Car will spend most of its life on back roads with an occasional track day/autocross
Do you think weak springs can cause suspension mount bearing to go bad and cause spring clunk noise while turning the wheel? I'm running on 5th set of Suspension bearing pads in 10 months but everytime I start getting could bind noise (twang and tings) while turning the wheel. I don't know how to resolve it.
Obviously we're not talking about a Miata here. We wouldn't expect "weak springs" (interpreting that as a low spring rate) to cause failures of those bearings. Low quality or underspecified parts would be the first expectation. If you're running cheap aftermarket parts, try to use OE. Otherwise, look for something bent such as the shaft of the strut.
What would be the advantage of having something like your koni 2.5 kit? compared to a coilover with konis from say ground control? What would the trade-offs be for each? I am looking into suspension for my 92 NA that i plan on daily driving except in the winter in colorado
Coilovers give you the ability to set ride height and to cornerweight the car. We've done a video on the latter. Other than that, they don't have any magical abilities. So you'll want to look at the chosen spring rates and the specified ride height on a non-adjustable setup. For your specific question, the 2.5 kit offers more bump travel in the rear due to the extended upper mounts used. The springs used on the GC kit (off the shelf) aren't really long enough to give full travel either.
So having a coil bind on a bumpy track will cause the car to stop absorbing bumps, as well as losing the tires contact patch with the track right. So you will be very unstable. This is correct right?
@@FlyinMiataVideo would a good brand like hyperco manage its spring rate all the way down to bind? Dont naturally springs get a little stiffer the more compressed it gets? Especially on a spring as short as 6”. I think I need to go up to 8”
@@Phuong_Nguyen_ The spring rate can shift a little bit right at each end of the range, but it's not dramatic. Generally speaking, we like to run the longest springs we can package. The only time we'd use a 6" would be on a very stiff setup. Binding a spring repeatedly will damage it, you want to avoid that.
@@FlyinMiataVideo I feel the EXACT same way. The longest spring possible should always be used. But when I called Swift Springs and another manufacturer, they said the shortest spring should always be used. And I disagree with that whole heartedly.
@@Phuong_Nguyen_ If you go too long, you can get into bending problems where the spring bows sideways as it compresses. Not typically a concern for Miata spring lengths. And of course they weigh more. But that is assuming that the short one is long enough, and usually that's not the case for Miatas.
Because when it happens, your suspension has been replaced by solid metal. In the real world - not on a nice smooth oval - this means massive shock loads going through your suspension and a lack of any ability for your tires to follow the road. You will break things, you will lose traction, you will be very uncomfortable. On a Miata, the usual damage is to your spring perches and thus suspension collapse. Cup cars were exploiting a rule set and run on nice smooth ovals. So effectively removing the suspension can work in that very specific use case. You have to be careful extrapolating what race cars do to street cars or even to other race cars.
At work when these are live, but always catch the post/replay. Thanks for the education.
I have watched springs moving at various frequencies and loads with a strobe light and it was very interesting. I couldn't help noticing the monogrammed title on the right side of your lab coat, nice touch doc!
Have a 16 ND club and have been on the fence with the Fox vs Ohlin debate for a while but leaning towards the foxes for the travel, any idea when these might be back in stock? Car will spend most of its life on back roads with an occasional track day/autocross
Do you think weak springs can cause suspension mount bearing to go bad and cause spring clunk noise while turning the wheel?
I'm running on 5th set of Suspension bearing pads in 10 months but everytime I start getting could bind noise (twang and tings) while turning the wheel.
I don't know how to resolve it.
Obviously we're not talking about a Miata here. We wouldn't expect "weak springs" (interpreting that as a low spring rate) to cause failures of those bearings. Low quality or underspecified parts would be the first expectation. If you're running cheap aftermarket parts, try to use OE. Otherwise, look for something bent such as the shaft of the strut.
Great video, loads of useful info - but, why did it sound like Darth Vader was in the background? The sound quality was a bit weird!
Sorry for the sound. These videos are recorded live for Facebook and unfortunately we had a microphone connection issue during the start of this one.
What would be the advantage of having something like your koni 2.5 kit? compared to a coilover with konis from say ground control? What would the trade-offs be for each? I am looking into suspension for my 92 NA that i plan on daily driving except in the winter in colorado
Coilovers give you the ability to set ride height and to cornerweight the car. We've done a video on the latter. Other than that, they don't have any magical abilities.
So you'll want to look at the chosen spring rates and the specified ride height on a non-adjustable setup. For your specific question, the 2.5 kit offers more bump travel in the rear due to the extended upper mounts used. The springs used on the GC kit (off the shelf) aren't really long enough to give full travel either.
@@FlyinMiataVideo Thanks.
I only understand Europe spring rate ....10Kg per mm , what would be spring rate be in pounds ? Thanks Keith
10 kg/mm is 560 lb/in. Take the number of kg/mm and multiply by 56 to get the lb/in equivalent. Or divide if you're going the other way.
@@FlyinMiataVideo ...thanks , that's why I picked 10 ....;-)
So having a coil bind on a bumpy track will cause the car to stop absorbing bumps, as well as losing the tires contact patch with the track right.
So you will be very unstable.
This is correct right?
Correct. There’s also the potential for suspension damage.
So springs are fine to go 80% of full travel?
Yes.
@@FlyinMiataVideo would a good brand like hyperco manage its spring rate all the way down to bind? Dont naturally springs get a little stiffer the more compressed it gets? Especially on a spring as short as 6”. I think I need to go up to 8”
@@Phuong_Nguyen_ The spring rate can shift a little bit right at each end of the range, but it's not dramatic. Generally speaking, we like to run the longest springs we can package. The only time we'd use a 6" would be on a very stiff setup.
Binding a spring repeatedly will damage it, you want to avoid that.
@@FlyinMiataVideo I feel the EXACT same way. The longest spring possible should always be used. But when I called Swift Springs and another manufacturer, they said the shortest spring should always be used. And I disagree with that whole heartedly.
@@Phuong_Nguyen_ If you go too long, you can get into bending problems where the spring bows sideways as it compresses. Not typically a concern for Miata spring lengths. And of course they weigh more. But that is assuming that the short one is long enough, and usually that's not the case for Miatas.
Why is coil binding bad most all cup teams use to coil bind at one time
Because when it happens, your suspension has been replaced by solid metal. In the real world - not on a nice smooth oval - this means massive shock loads going through your suspension and a lack of any ability for your tires to follow the road. You will break things, you will lose traction, you will be very uncomfortable. On a Miata, the usual damage is to your spring perches and thus suspension collapse.
Cup cars were exploiting a rule set and run on nice smooth ovals. So effectively removing the suspension can work in that very specific use case. You have to be careful extrapolating what race cars do to street cars or even to other race cars.
First!!