Replacing front brake rotors on my 01 GL1800A. Bought Arashi rotors. My question is-- are the rotors directional or does it matter??? Nothing on the rotors to indcate otherwise… Thanks, Chris…..
are front brake rotors directional??????
cddjake
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YES. The OE rotors are directional and it makes a difference. Reverse them and the brakes will lightly pulse as you slow to a stop. Probably reduces braking performance too. Oddly, aftermarket rotors I have seen are not oriented.
All of the OE rotors I have seen are clearly marked with an arrow embossed.
prs
All of the OE rotors I have seen are clearly marked with an arrow embossed.
prs
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4,390 Posts
If you don't mind me asking, where did you get them and for how much? Maybe a link or something?
EDIT:
Did a little search, and found this.....
http://gl1800riders.com/forums/showthread.php?395289-Caution!!!-arashi-chinese-disc-brake-rotors
I wonder if there's more to this story, it's kinda dated.
I have the Arashi's on the bike right now. I like them.
I read with wave rotors you want to alternate the pattern of the rotor from the left to right, to prevent brake pulse. No arrows on the Arashi's.:thumbup:
LOL, been there done that.
You want these..
Not these.
Here's a pic of the wheels, with fresh PC, and new rotors.
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Those look awesome! I like the contrast of the rotor and wheel, very nice. Was wondering if you researched a rear rotor too?LOL, been there done that.
You want these..
![Image]()
Not these.
![Image]()
Here's a pic of the wheels, with fresh PC, and new rotors.
![Image]()
Thanks! :yes1:
I have two sets of wheels, so I can just swap out wheels before a long trip.
I didn't bother looking into a rear rotor, OEM trike take offs are a dime a dozen.
I bought mine from mad hornets.com $199 per set (2)includes shipping. Received them really fast for being shipped from china. Just look up rotors for GL1800, black or gold center pieces. I got the gold #DBS1004W. Fit great, just installed them. Raining now so can't' test drive yet. Enjoy, Chris…...
Have had the front rotors off. Could see no difference. Same offset, hole pattern, etc. Only difference was that the right rotor had drilled and tapped holes for the ABS reluctor. And the arrow.
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I saw no differences other than the arrow indications and I have no ABS. BUT, I sure as h377 got the pulses slowing to a stop when I accidently reversed them. The pulses went away when I later corrected my error. Try it an see if you can replicate or refute.
prs
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5,083 Posts
I suspect the arrow on OEM is for when you take them off so that they are returned to same direction due to wear pattern. But if new it makes no difference.
Which means that if you install unmarked rotors you will want to mark them if you take them off.
Which means that if you install unmarked rotors you will want to mark them if you take them off.
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:thumbup:+1
New installation no problem. Wave rotors have no preference if new. Mark them when R&R tho
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By golly, that makes a heap of sense! Never thought of that. Thanks! I knew there had to be some reasonable explanation for the slow to stop pulse.
prs
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Consider using an electric etcher or metal stamps to mark new wave style brake rotors prior to mounting, not until you have to remove them later... you know what will happen when later rolls around...
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