SuzukiSavage.com - Put front caliper on right fork in front of fork?

Gyrobob

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Put front caliper on right fork in front of fork?
07/25/11 at 20:12:14

What would be the pros and cons of switching sides for the caliper?

One guy mentioned the routing for the brake tubing would be shorter and simpler. You could even use metal tubing for most of it with just a short loop to account for fork travel.

Less weight?

Would the forks feel different with some weight moved forward of the rotational (stem) axis?

Would it make any difference having the rotor pulling the caliper away from the fork instead of pushing it toward the fork?

Just brainstorming here,...

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28999 L.A. California Gender:	Re: Put front caliper on right fork in front of fo Reply #1 - 07/25/11 at 20:35:34 Well, placing the caliper more over the center of the axle would be a benefit to the fork and make the load on the forks equal. But you may need a more substantial lugs to mount to, as now the lugs will be in tension. metals are stronger in compression than tension.
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Howitzer Full Member Offline SuzukiSavage.com Rocks! Posts: 141 Boston, MA Gender:	Re: Put front caliper on right fork in front of fo Reply #2 - 07/25/11 at 20:51:29 verslagen1 wrote on 07/25/11 at 20:35:34: But you may need a more substantial lugs to mount to, as now the lugs will be in tension. metals are stronger in compression than tension. I knew ceramics are stronger in compression, but I wasn't aware metals were.
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prsavage Senior Member Offline atgatt Posts: 306 Nanaimo BC Gender:	Re: Put front caliper on right fork in front of fo Reply #3 - 07/25/11 at 21:24:47 Doesn't the bleed screw end up on the bottom and unusable if you switch sides? I don't have my bike to look at as it is at home and I am out of town for work or I would check myself.
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 29303 Tucson Az Gender:	Re: Put front caliper on right fork in front of fo Reply #4 - 07/25/11 at 22:54:54 ... but that'll make you stop backwards... ...
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Gyrobob Serious Thumper Offline Posers ain't motorcyclists Posts: 2571 Newnan, GA Gender:	Re: Put front caliper on right fork in front of fo Reply #5 - 07/26/11 at 02:49:00 Serowbot wrote on 07/25/11 at 22:54:54: ... but that'll make you stop backwards... ... Only if I am upside down
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spacepirates Serious Thumper Offline Igni Ferroque Posts: 515 Pittsburgh, PA Gender:	Re: Put front caliper on right fork in front of fo Reply #6 - 07/26/11 at 07:27:51 hm... what if you got an extra left fork and used the two lefts such that you could have a dual disc setup? would there even be enough space to mount a second disc? if you've got the time, you could always try it. might suck up the better part of a weekend, but then you'd know.
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Gyrobob

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Re: Put front caliper on right fork in front of fo
Reply #7 - 07/26/11 at 11:50:14

spacepirates wrote on 07/26/11 at 07:27:51:

hm... what if you got an extra left fork and used the two lefts such that you could have a dual disc setup? would there even be enough space to mount a second disc?

if you've got the time, you could always try it. might suck up the better part of a weekend, but then you'd know.

That might look a little unusual,.. having one caliper in front of the right fork, and one caliper in back of the left fork.

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MotoBuddha

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Re: Put front caliper on right fork in front of fo
Reply #8 - 07/26/11 at 16:40:28

spacepirates wrote on 07/26/11 at 07:27:51:

hm... what if you got an extra left fork and used the two lefts such that you could have a dual disc setup? would there even be enough space to mount a second disc?

The axle slides through the right fork and screws into the left. Then the pinch bolt on the right fork clamps the axle in place. With two lefts, you'd need to modify one fork so the bottom is like a right fork.

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drums1

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Re: Put front caliper on right fork in front of fo
Reply #9 - 07/27/11 at 06:11:45

What, exactly, would be the point of doing all this? Right, left, what's the difference, as long as the bike stops? Personally, I go by "if it ain't broke, it don't need fixin'." I guess some guys just like to fabricate for the sake of fabricating. Myself, I let Suzuki do the building, I'll just do the riding.

Smiley

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Boule’tard

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Re: Put front caliper on right fork in front of fo
Reply #10 - 07/27/11 at 07:43:14

Howitzer wrote on 07/25/11 at 20:51:29:

verslagen1 wrote on 07/25/11 at 20:35:34:

But you may need a more substantial lugs to mount to, as now the lugs will be in tension. metals are stronger in compression than tension.

I knew ceramics are stronger in compression, but I wasn't aware metals were.

+1 [citation needed]. I think most metals, including aluminum, are isotropic.. that is, same properties regardless of direction. But verslagen's cautionary advice probably still holds, because the stress would be concentrated onto a smaller cross section of material (therefore the whole assembly would be more prone to catastrophic failure) if the lugs were in tension.

Not that we don't want Gyrobob to try it Grin

..but also, remember to flip your tire around if running a directional tread.

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MotoBuddha

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Re: Put front caliper on right fork in front of fo
Reply #11 - 07/27/11 at 07:53:19

Seems to me, the way the stock caliper is mounted, and the angle to the rotor, the top lug is in compression but the bottom lug is at least partially under tension. Where the rotor meets the caliper, it's moving upward, levering the rear of the caliper upward, with the top lug acting as the pivot point and the rear lug keeping the caliper from flipping upward. If the caliper was mounted on the front of the fork (like many used to be) the bottom lug would then be in compression and the top lug in tension.

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verslagen1

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Re: Put front caliper on right fork in front of fo
Reply #12 - 07/27/11 at 08:37:29

I use a lot of exotics, so I have to be aware that they are different.
Especially when I have to design for requirements that would leave you as a puddle on the floor.

Even stainless tensile yield strength is 26kpsi vs 23kpsi in compression.
Which does seem like a lot till you compare 1/4 hard material...
tensile yield strength is 69kpsi vs 44kpsi in compression.

But not so much for 6061 aluminum...
tensile yield strength is 35kpsi vs 36kpsi in compression.

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arteacher Serious Thumper Offline Ride as if your naked and invisable! Posts: 2581 London ontario Gender:	Re: Put front caliper on right fork in front of fo Reply #13 - 07/27/11 at 09:20:31 IMHO it would be more trouble than it's worth. Some have gone to two brakes with different forks from another bike.
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MotoBuddha Serious Thumper Offline Let's roll! Posts: 1416 Charlotte, NC	Re: Put front caliper on right fork in front of fo Reply #14 - 07/27/11 at 10:17:43 Gyrobob wrote on 07/25/11 at 20:12:14: One guy mentioned the routing for the brake tubing would be shorter and simpler. If all you want is a shorter, simpler brake line, then you could swap the master cylinder to the left by using one from a hydraulic clutch, then retrain your hands.
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