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Old 09-16-2013, 10:47 PM   #31
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Quote:
Originally Posted by mac.mogul View Post
Wheel hop is 100% suspension... When it's too soft or poorly aligned, wheel hop happens.

Stiffen the springs, stiffen the bushings, adjust the damping, and keep a slight toe-in alignment. That'll take care of wheel hop.

Tires and engine mounts have nothing to do with it.
i will have to disagree with that, me and my friend put a go pro in the engine bay and we could clearly see the engine bouncing back and forth at the same time that the wheels hop. It was easy to see that the engine movement was directly related to the wheel hop , then we tried it again after upgrading the oem rmm with a Cobb rmm and problem solved

trans-axle wheel hop on a rwd is another thing because its the leaf springs that cause the hops

p.s. sorry for my terrible english skills
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Old 09-17-2013, 09:03 AM   #32
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I'm not going to sit here and explain again why the engine mount has nothing to do with it.
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Old 09-17-2013, 09:45 AM   #33
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Quote:
Originally Posted by Samahell View Post
i will have to disagree with that, me and my friend put a go pro in the engine bay and we could clearly see the engine bouncing back and forth at the same time that the wheels hop. It was easy to see that the engine movement was directly related to the wheel hop , then we tried it again after upgrading the oem rmm with a Cobb rmm and problem solved

trans-axle wheel hop on a rwd is another thing because its the leaf springs that cause the hops

p.s. sorry for my terrible english skills
Oh sweet, another resurrection of a dead thread.

Of course you're going to see engine movement with wheel hop on a fwd as they are directly connected to the hopping wheels. The problem is that you're trying to correlate the motor mount/engine movement as being a cause when you're actually seeing the after effects of the wheels having already broken loose. Had the tires not broken loose then the motor wouldn't have the ability to unwind from the torque.

I'm going to have to side with Mac on this. If you left the OEM mount installed but swapped your tires to full-slicks and had your suspension properly tuned, I highly doubt wheel hop would be an issue. More than likely all you would observe is your car getting traction and then your engine would bog due to the lack of power to break them loose.

I'm not saying that a RMM isn't part of an overall powertrain solution on a more purposefully-built racecar, but when I had my PS3's I couldn't experience wheel hop due to the inability of spinning the tires to start with. The only time my tires could come loose was if one was partially unloaded (in a turn) or if the ground was wet. I never had wheel-hop issues even on the OEM RMM.

And I have no idea why people keep bringing up RWD information as it isn't pertinent to a FWD setup at all. My Armada squats when I launch it but that is completely irrelevant to my Focus.
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Old 09-17-2013, 11:59 AM   #34
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WHEEL HOP IS 100% SUSPENSION. PLEASE TAKE THIS FROM AN ASE CERTIFIED TECHNICIAN!

If you don't trust me... go put the mount on and then put the GoPro facing the wheels. They are still hopping. Then put the factory mount back on and install a "GOOD" quality suspension SYSTEM (not just springs) and the wheel hop will be almost gone. There are differences in all cars, tires, pavement, and drivers, so one cannot say wheel hop will be completely gone.

With the wheel hop gone and the tires not hopping your car can and will still break under hard driving. Please refer to my car at FocusFest... I twisted the axle!

On a sarcastic note please refer to youtube for all you technical support!
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Old 09-17-2013, 12:12 PM   #35
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I could see it(RMM) making a difference maybe slightly in the noise that we all hate.
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Old 10-02-2013, 01:18 AM   #36
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a stiffer E-Focus rmm will help. this video is a great visual. http://www.youtube.com/watch?v=Sr6ssEdlAl4
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Old 10-02-2013, 05:35 PM   #37
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Wheel hop explained, and YES it is mount upgrade related. All? No, but a good part of it:

http://www.energysuspensionparts.com...nt-Inserts.asp



How Do Energy Suspension Motor Mount Inserts Reduce Wheel Hop?


Energy Suspension Motor Mount Inserts are best known for their ability to reduce wheel hop and allow high performance vehicles to put more power into propelling the car forward. Energy Suspension Motor Mount Inserts operate with the same principles as Solid Motor Mounts. Many ultra high performance vehicles use solid motor mounts because they allow for very little motor movement. Because the motor is held firmly in place, there is no bouncing of the motor assembly. This allows the entire driveline assembly to maintain a solid geometry, reducing the excess movement caused by the otherwise violent release of power.
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Old 10-02-2013, 08:01 PM   #38
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Quote:
Originally Posted by TurboTechRacing View Post
Wheel hop explained, and YES it is mount upgrade related. All? No, but a good part of it:

http://www.energysuspensionparts.com...nt-Inserts.asp



How Do Energy Suspension Motor Mount Inserts Reduce Wheel Hop?


Energy Suspension Motor Mount Inserts are best known for their ability to reduce wheel hop and allow high performance vehicles to put more power into propelling the car forward. Energy Suspension Motor Mount Inserts operate with the same principles as Solid Motor Mounts. Many ultra high performance vehicles use solid motor mounts because they allow for very little motor movement. Because the motor is held firmly in place, there is no bouncing of the motor assembly. This allows the entire driveline assembly to maintain a solid geometry, reducing the excess movement caused by the otherwise violent release of power.
exactly
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Old 03-16-2014, 09:36 PM   #39
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Quote:
Originally Posted by Von551 View Post
exactly
Considering I have a Turbo Tech upper and lower and a Trans support and have terrible wheel hop, the engine and trans are not moving at all, but the car gets bad wheel hop in 2nd 3rd and 4th btw it has a gtx big turbo in it and puts down over 340whp. That solution may work on a stock ST but it doesn't work on a modified one? It's suspension!
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Old 03-16-2014, 10:00 PM   #40
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If you have bad CAB (Control Arm Bushings), yes mounts will not fix it. If you have good CAB and mounts you should not get wheel hop. It is not all mounts, we agree, but it is for sure part of the solution.
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