None at all since the rear never drive over the mower. The 1.5" spacer is the max without hitting the mower deck guide wheels when it is in the up position though.
I just wanted to offer some insight. That lip is not taking the brunt of the load from the tractor. That is a hub-centric ring that keeps the wheel concentric with the hub during install and operation. Although never practiced, the "textbook" way to fasten a wheel to the hub in an engineering sense, would be to put the wheel up onto the lip of that hub-centric ring, and then utilize a service jack under the tire to put just enough upward force to essentially take all stress off that hubcentric ring. You would then fasten your wheel to the hub (in this case wheel spacer). The load, whether it be on a structural beam, or in this case a tractor hub, should always be applied after the fastening has taken place. This is the correct way to assure that the fasteners and material (wheel spacer) carry their ratio of the load. As far as how much load the hub versus fasteners would carry, is an entire different rabbit hole to go down which involves math dependent upon fastener characteristics, etc..Keep in mind wheel spacers also add stress to the hub as it furthers the location of the load from the hub itself. The ideal scenario is having load as close as possible to the hub, limiting the moment arm that is placed on the hub. What is taking place is bolt stretch (preload) when the wheel is fastened to the hub. In your case a torque wrench is utilized, in engineering a measurement of bolt stretch would be utilized when finding a correlated torque spec to put in the manual. Once preload is placed on the fasteners, and the two materials are fastened together, the load can be applied, in this case dropped the tractor back down to the ground. This deforms (would need a strain gage to measure) the (think of the material marshmellowing for context), which would create stress countering the preload of the fasteners. This relieves the fastener of some of it's preload. It can be hard to conceptualize, but the torque you are applying with a wrench isn't the fastening agent. The fastening agent is the tensile force applied that is being applied to the material because of your rotation. In reality, a measurement of PSI on a torque wrench is just a measurement allowing one to know how much torque is required in order to spin a fastener to the point where it applies the correct amount of preload (axial force) on a fastener for a specific application. In closing, how much the added stress effects the fatigue lifecycle of the suspension, that would be a question for John Deere engineers who have the seat time testing the tractor. Mathematically however, the stress is increased on the hub with wheel spacers. You don't even need to own a tractor to know that.
A MF dealer to me that they don't recommend adding spacers, and if the owner really want, they sale it, but not made by MF, and not thicker than 1.5. He also said, if its an issue with the tractor rear end, MF may not warrantee the service, blaming the spacers, he said "Maybe". He said that on the long run, it will affect the life of bearings and seals, if owner abuse the tractor doing crazy turns, incline terrain, etc.
Hello. No they do not rub. It is close when the deck is in the raised position but the lower the deck the greater the distance becomes so when mowing there is no issue of rubbing. Because of that 1.5" is the max you can go though.
I just added mine today aright before dark so have not put any time on them. Have you noticed in mechanical issues or had any regrets to putting them on?
It's been almost one year and so mechanical or cosmetic issues at this point. No regrets or issues so far. I think the 1.5" spacers are conservative and are within limits of normal use and no abuse.
I’d have continued watching even if the banner had said ‘Biden or Harris 2024’…I just wanted to learn about your installation! I couldn’t tell on the video, did you use the blue thread lock?
Yes, I used thread locker on the bolts holding the spacer on. I did not use any thread locker on the wheel. Thanks for watching regardless of the banner. It was from my nephew as an inside prank we were going back and forth with and I finally hung it up there.
Nice lawnmower
thanks good info
“Not that kind of video”😂 Cracked me up. Good job on the video
Any issues driving over the mower?
None at all since the rear never drive over the mower. The 1.5" spacer is the max without hitting the mower deck guide wheels when it is in the up position though.
I just wanted to offer some insight. That lip is not taking the brunt of the load from the tractor. That is a hub-centric ring that keeps the wheel concentric with the hub during install and operation. Although never practiced, the "textbook" way to fasten a wheel to the hub in an engineering sense, would be to put the wheel up onto the lip of that hub-centric ring, and then utilize a service jack under the tire to put just enough upward force to essentially take all stress off that hubcentric ring. You would then fasten your wheel to the hub (in this case wheel spacer). The load, whether it be on a structural beam, or in this case a tractor hub, should always be applied after the fastening has taken place. This is the correct way to assure that the fasteners and material (wheel spacer) carry their ratio of the load. As far as how much load the hub versus fasteners would carry, is an entire different rabbit hole to go down which involves math dependent upon fastener characteristics, etc..Keep in mind wheel spacers also add stress to the hub as it furthers the location of the load from the hub itself. The ideal scenario is having load as close as possible to the hub, limiting the moment arm that is placed on the hub.
What is taking place is bolt stretch (preload) when the wheel is fastened to the hub. In your case a torque wrench is utilized, in engineering a measurement of bolt stretch would be utilized when finding a correlated torque spec to put in the manual. Once preload is placed on the fasteners, and the two materials are fastened together, the load can be applied, in this case dropped the tractor back down to the ground. This deforms (would need a strain gage to measure) the (think of the material marshmellowing for context), which would create stress countering the preload of the fasteners. This relieves the fastener of some of it's preload. It can be hard to conceptualize, but the torque you are applying with a wrench isn't the fastening agent. The fastening agent is the tensile force applied that is being applied to the material because of your rotation. In reality, a measurement of PSI on a torque wrench is just a measurement allowing one to know how much torque is required in order to spin a fastener to the point where it applies the correct amount of preload (axial force) on a fastener for a specific application.
In closing, how much the added stress effects the fatigue lifecycle of the suspension, that would be a question for John Deere engineers who have the seat time testing the tractor. Mathematically however, the stress is increased on the hub with wheel spacers. You don't even need to own a tractor to know that.
A MF dealer to me that they don't recommend adding spacers, and if the owner really want, they sale it, but not made by MF, and not thicker than 1.5. He also said, if its an issue with the tractor rear end, MF may not warrantee the service, blaming the spacers, he said "Maybe". He said that on the long run, it will affect the life of bearings and seals, if owner abuse the tractor doing crazy turns, incline terrain, etc.
Spacers are not the problem it’s the short between the seat and the steering wheel
Do your rear tires ever rub against the anti-scalp wheels on your mower deck?
Hello. No they do not rub. It is close when the deck is in the raised position but the lower the deck the greater the distance becomes so when mowing there is no issue of rubbing. Because of that 1.5" is the max you can go though.
I just added mine today aright before dark so have not put any time on them. Have you noticed in mechanical issues or had any regrets to putting them on?
It's been almost one year and so mechanical or cosmetic issues at this point. No regrets or issues so far. I think the 1.5" spacers are conservative and are within limits of normal use and no abuse.
I’d have continued watching even if the banner had said ‘Biden or Harris 2024’…I just wanted to learn about your installation! I couldn’t tell on the video, did you use the blue thread lock?
Yes, I used thread locker on the bolts holding the spacer on. I did not use any thread locker on the wheel. Thanks for watching regardless of the banner. It was from my nephew as an inside prank we were going back and forth with and I finally hung it up there.
Trump 2024? Stopped watching right there.