I don’t even know why I want to know the answer to this..

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11/24/2020 1:59 PM

Trivial, I know, but for some reason it keeps coming back to me..

For as long as I can remember, manufacturers have assembled their bikes with the swing-arm pivot bolt inserted from the right, with the nut on the left.

I’ve noticed they’ve (noticed on Honda) started doing it the opposite way around.

Any ideas why? Photo
Photo

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The above may be fact or fiction, I may be serious, I may be jesting. I am not sure, you have no chance.

11/24/2020 2:02 PM

Looks like the new Honda way you do not need to remove the brake pedal to get the swingarm bolt out

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11/24/2020 2:05 PM

TheCRKid wrote:

Looks like the new Honda way you do not need to remove the brake pedal to get the swingarm bolt out

Good theory.
But do you need to remove the brake pedal to get a socket on it? (Honestly can’t tell from that photo.)

Late model CRF owners??

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The above may be fact or fiction, I may be serious, I may be jesting. I am not sure, you have no chance.

11/24/2020 2:11 PM

My guess is you would have to ask some sort of structural engineer who built that frame. Almost the same as motor mount or linkage bolt directions. Might be something with the amount of torque / flex / that the frame and bolt work in conjunction with.

I see lots of rear wheels with axles in backwards and I'm sure maybe on some sort of engineering level it makes a difference, but to the normal rider it doesn't affect anything.

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11/24/2020 2:15 PM

TheCRKid wrote:

Looks like the new Honda way you do not need to remove the brake pedal to get the swingarm bolt out

Thisusernameisavailable wrote:

Good theory.
But do you need to remove the brake pedal to get a socket on it? (Honestly can’t tell from that photo.)

Late model CRF owners??

It looks like a small enough amount that just pushing the pedal down would create the clearance

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Rent free...

11/24/2020 2:28 PM

silver753 wrote:

My guess is you would have to ask some sort of structural engineer who built that frame. Almost the same as motor mount or linkage bolt directions. Might be something with the amount of torque / flex / that the frame and bolt work in conjunction with.

I see lots of rear wheels with axles in backwards and I'm sure maybe on some sort of engineering level it makes a difference, but to the normal rider it doesn't affect anything.

Yes I’ve seen documents regarding rear axle fitment in the past.

The theory is that with the rear axle nut on the right side, whilst tightening it up you’re pushing the wheel forward against the chain adjuster blocks.

Whereas with the nut on the left side whilst tightening it up you’ll be pulling the wheel rear wards effectively pulling the wheel out of true.

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The above may be fact or fiction, I may be serious, I may be jesting. I am not sure, you have no chance.

11/24/2020 2:35 PM

TheCRKid wrote:

Looks like the new Honda way you do not need to remove the brake pedal to get the swingarm bolt out

Thisusernameisavailable wrote:

Good theory.
But do you need to remove the brake pedal to get a socket on it? (Honestly can’t tell from that photo.)

Late model CRF owners??

hypermoto wrote:

It looks like a small enough amount that just pushing the pedal down would create the clearance

Yep, especially if the caliper was pushed on first to separate the pads.

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11/24/2020 2:42 PM

omalley wrote:

Yep, especially if the caliper was pushed on first to separate the pads.

The first time someone sees you do that and their jaw hits the ground.

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11/24/2020 4:13 PM

Ya this has messed with me too. Glad I'm not the only one.

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

11/24/2020 4:31 PM

Vital riders who can feel the handling ruining effect of a skid plate and a 1ft/lb difference in triple clamp torque can also feel the massive improvement of the swingarm nut being on the brake side.

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Powerband in every gear !

11/24/2020 5:09 PM

If you put the axle in back to front , catching the bolt in ruts and such can also start to undo the nut

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11/24/2020 5:22 PM

lil717 wrote:

If you put the axle in back to front , catching the bolt in ruts and such can also start to undo the nut

I didn’t even think about that!

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

11/24/2020 5:47 PM

My brother worked at Nakatomi Plaza in the swing arm frame assembly section, being a left handed he always installed the nut on the shifter side.

A while back he was promoted to the Electric MX bike division installing power bands, he was replaced by a short busty Nigerian woman who is right handed, she now puts the nuts on the brake side.


Now you know why you didn't really want to know the answer.

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11/24/2020 6:28 PM

They've run artifical intelligence on all public mx tracks and realized more left hand turns. The weight bias from swapping swing arm bolt, actually drops 1 sec a lap over the competition

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11/24/2020 8:46 PM

FGR01 wrote:

Vital riders who can feel the handling ruining effect of a skid plate and a 1ft/lb difference in triple clamp torque can also feel the massive improvement of the swingarm nut being on the brake side.

It really is game changing

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Rent free...

11/24/2020 9:03 PM

The head of the bolt should always be where more pressure/force is expected. You are much more likely to shear off a nut then the actual bolt head. The threaded area of a bolt is significantly weaker then the smooth shaft and head.

This sound like a Hustler article. lol

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11/24/2020 11:12 PM

FGR01 wrote:

Vital riders who can feel the handling ruining effect of a skid plate and a 1ft/lb difference in triple clamp torque can also feel the massive improvement of the swingarm nut being on the brake side.

Half of the riders couldn’t tell you if they’ve got a rear wheel puncture! 😆

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The above may be fact or fiction, I may be serious, I may be jesting. I am not sure, you have no chance.

11/25/2020 12:21 AM

New Hondas are assembled in the southern hemisphere, therefore the axle goes in the opposite direction...

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11/25/2020 3:58 AM

Thisusernameisavailable wrote:

Yes I’ve seen documents regarding rear axle fitment in the past.

The theory is that with the rear axle nut on the right side, whilst tightening it up you’re pushing the wheel forward against the chain adjuster blocks.

Whereas with the nut on the left side whilst tightening it up you’ll be pulling the wheel rear wards effectively pulling the wheel out of true.

You must have missed the update where it goes into detail on how all those factors change by just moving your tools 180 degrees in the axis.

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11/25/2020 3:59 AM
Edited Date/Time: 11/25/2020 4:02 AM

TXDirt wrote:

The head of the bolt should always be where more pressure/force is expected. You are much more likely to shear off a nut then the actual bolt head. The threaded area of a bolt is significantly weaker then the smooth shaft and head.

This sound like a Hustler article. lol

When I imagine your post being read by Charlize theron, I keep breaking axle nuts

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11/25/2020 2:26 PM

silver753 wrote:

My guess is you would have to ask some sort of structural engineer who built that frame. Almost the same as motor mount or linkage bolt directions. Might be something with the amount of torque / flex / that the frame and bolt work in conjunction with.

I see lots of rear wheels with axles in backwards and I'm sure maybe on some sort of engineering level it makes a difference, but to the normal rider it doesn't affect anything.

Installing the Axle in backwards will require the triangle stand that comes with the bike to be inserted from the right (wrong) side of the bike...Most stands I've seen will not go in the threaded end...The hole is smaller ..But who uses the triangle stand that much...

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Don't be a Pussy...