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1Back to top Go down   Does this look right to you? Empty Does this look right to you? on Sat Jun 20, 2020 7:37 am

Bonzo

Bonzo
Platinum member
Platinum member
I dunno, it just seems like the holes are going against the direction of travel to me, though I can't imagine EBC fitting the rotors the wrong way around.

Very impressed by the quality of these discs though.


Does this look right to you? Img_2020


__________________________________________________
1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

2Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sat Jun 20, 2020 7:48 am

Laitch

Laitch
Life time member
Life time member
There are left- and right-side hole patterns in EBC discs. That's a left-side pattern. According to others who have installed discs like that, it makes no difference in performance, and has the bonus of putting your personal stamp on your moto. cheers


__________________________________________________
1995 K75 77,000 miles
Does this look right to you? Usa-lo10
    

3Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sat Jun 20, 2020 9:02 am

Dai

Dai
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Life time member
They're supposed to aid water dispersal. As the brakes go on, rather than wait for all the water to be compressed and flung out at the rim which delays braking, the holes provide a 'temporary storage' area. That's the theory anyway; doesn't matter a blind cuss what the pattern looks like. In practice they have a habit of getting clogged up with brake dust Very Happy


__________________________________________________
'83 K100 upgraded to K100RS spec, '87 K100RT
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California
    

4Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sat Jun 20, 2020 10:14 pm

Two Wheels Better

Two Wheels Better
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It reminds me of a scene in Life of Brian. The mob are chasing Brian and as he runs away, he loses a sandal. Someone in the crowd sees the errant thong flop, stops and grabs it, holding it aloft and crying out, "It's a sign, we must remove a shoe," and she takes off her left sandal. Many agree and take off their left sandal. While another person in the crowd, removes the right sandal. Upon seeing their difference they go at it, arguing over whether it's meant to be taken as left or right, up or down, east or west, north or south. A rumble ensues, since time immemorial.

My argument, by chance only, suggests it's the wrong way round. Here's Big Block sporting an EBC-brand rear disc. The bloke fitting your disc to its carrier was perhaps dreaming of a Friday on a Monday or Saturday night on a Friday arvo.  Does this look right to you? 652573
Does this look right to you? Ebc_di10
I too reckon it'll make little difference to the water being flung away, but those bloody little chunks of brake dust might have a bit of a disagreement with it, and so will the rider, who has to attempt to forget about this tiny little slice of mechanical minutae before each ride.


__________________________________________________

Sometimes I lie awake at night, and I ask, "What can I do to keep my life from going by so fast?" Then a voice comes to me that says, "Try slowing down at the corners." 

~Charlie Brown

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

5Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 2:48 am

Arlina

Arlina
Life time member
Life time member
TWB; Always look at the bright side of life Very Happy 

Never had a rear disk with holes, guess I don't need the holes.
Did a testride on a '83 K100, after 20km I noticed the red triangle in the dash.
Holy bugger of god, what did I miss before start riding?
Ow dear, forgot to hit the rearbrake.... 1 tap and the light goes to sleep Razz


__________________________________________________
Does this look right to you? Eu-log10  K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde - K75LT project
    

6Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 10:08 am

stanthomas

stanthomas
active member
active member
Holes go the other way on my new EBC disc (same as 2 wheels). The disc centre has tapered holes for the 2 retaining screws so it should only go on one way round.
I'd complain to EBC if they've assembled it wrongly.

Update: The plot thickens ... I've just looked at the pictures on Motorworks site, and the holes on non-ABS go the "right" way, the ABS one goes the "wrong" way.

non-ABS
https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=6&Q=BRA00611

ABS
https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=6&Q=BRA00661

    

7Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 1:55 pm

Bonzo

Bonzo
Platinum member
Platinum member
Good spot stanthomas  Does this look right to you? 112350

I've done about 50 miles and have to say, they're great discs (well disc - I only changed the rear). I just can't stop seeing it as out of flow, as TWB suggested  Does this look right to you? 61740


__________________________________________________
1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

8Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 4:30 pm

chris846

chris846
Life time member
Life time member
Well seeing as we're still in lockdown (are we still in lockdown in the UK, does anyone know?) this merits further thought (i.e the application of an underemployed brain)
The centripetal forces on the water/brake dust/whatever, will drive the stuff radially across the disc, so my completely unscientific postulation is that the application of the brake, and the consequent presence of the pad tight onto the disc will sweep the water/brake dust/whatever into Hole A, being the closest hole to the centre - or Mercury, if you want to use a planetary analogy. As the disc continues to rotate, Hole A (Mercury, remember) will become exposed as it passes past the brake pad, and its contents: the water etc. will emerge and pass radially, further outward. The arrival of the brake pad on the next rotation will sweep the water etc. into Hole B (Venus) and so on. The net effect being that the holes assist in the migration of water etc to the perimeter of the disc where they will be expelled from the disc (solar system) completely. like the Voyager space probe, if you like. This principle, if it exists at all, works best if the holes are arranged to flare outwards with the rotation of the disc.

However, by this time the bike will be a pale blue dot, one third of a pixel in size. All the journeys ever travelled, all the side panels that ever fell off...all the fuel level lights that flickered pointlessly.....

Aaaaaargh


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

9Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 4:35 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Try that in the southern hemisphere, when flushing a dunny, or watching a whirlpool spin, and observe the opposite rotation from 'up north'.
Reckon it maybe could might be an equatorial thing? Bonzo's rear disc got put into a box meant for Stralya or zud Africa.
Wink


Does this look right to you? Maiden11


__________________________________________________

Sometimes I lie awake at night, and I ask, "What can I do to keep my life from going by so fast?" Then a voice comes to me that says, "Try slowing down at the corners." 

~Charlie Brown

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

10Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Sun Jun 21, 2020 6:42 pm

Laitch

Laitch
Life time member
Life time member
@Two Wheels Better wrote:Reckon it maybe could might be an equatorial thing?
I think you've nailed it. Does this look right to you? 652573


__________________________________________________
1995 K75 77,000 miles
Does this look right to you? Usa-lo10
    

11Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 4:35 am

chris846

chris846
Life time member
Life time member
Yes of course, the Coriolis effect.
- Invented in 1841 by celebrated Irish scientist Cormac O'Coriolis, who discovered that inducing a whirlpool effect in an inverted bottle of Guinness improved the efficiency with which it could be emptied into a glass!
Cheers!
Does this look right to you? Old_ma12

Will lockdown end soon, please?


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

12Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 5:18 am

Ringfad

Ringfad
Life time member
Life time member
The disc I fitted appears to work in both Australia and here, the hole pattern is reversible.

I have not yet tried driving past the Guinness factory (less than 10km away) in case I get drawn into a vortex.

Does this look right to you? Rear_d10


__________________________________________________
Does this look right to you? Ir-log10

   ;BMW; K100RS Style Black 1987 105K Km     ;BMW; K1 Black 1993 51K Km     ;BMW; K1100RS Red 1993 70k miles (exiled in Alicante at the moment)  ;BMW; K100 16V Black (ex ElectricMonk)  ;BMW;  K1100LT (Swiss) soon to be an RS
    

13Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 5:49 am

Stan

Stan
Life time member
Life time member
Just get a solid disc. bounce


__________________________________________________
1983 K100 basic vin 0003960 colour red  GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

14Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 6:06 am

Dai

Dai
Life time member
Life time member
@chris846 wrote:Yes of course, the Coriolis effect.
- Invented in 1841 by celebrated Irish scientist Cormac O'Coriolis, who discovered that inducing a whirlpool effect in an inverted bottle of Guinness improved the efficiency with which it could be emptied into a glass!
Cheers!
Does this look right to you? Old_ma12

Will lockdown end soon, please?
Are you absolutely sure that's not Spike Milligan?


__________________________________________________
'83 K100 upgraded to K100RS spec, '87 K100RT
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California
    

15Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 6:24 am

chris846

chris846
Life time member
Life time member
Feckin hell, I'm not even sure I'm not Spike Milligan!


__________________________________________________
Sometimes I'm not really Suzi Quatro.
    

16Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 8:16 am

moriarti

moriarti
Gold member
Gold member
@chris846 wrote:Feckin hell, I'm not even sure I'm not Spike Milligan!
Any sign of walking backwards?? Then YOU ARE cheers


__________________________________________________
1984 k100 rs red/black VIN  0004449
    

17Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 9:38 am

stanthomas

stanthomas
active member
active member
Looks like EBC agree it's not right and you'll be able to exchange the disc for one with the correct rotation.

This is the reply from Gareth Preston, EBC Motorcycle Technical Advisor:

As my previous email advises, I believe Bonzo has the incorrect directional disc. This is a production error and I have checked the remaining stock and no other discs we have here in the factory are affected.


I shall sign up to the forum and place a comment on the forum thread asking anyone affected to get in contact.

    

18Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 11:36 am

92KK 84WW Olaf

avatar
Life time member
Life time member
@Ringfad wrote:The disc I fitted appears to work in both Australia and here, the hole pattern is reversible.

I have not yet tried driving past the Guinness factory (less than 10km away) in case I get drawn into a vortex.

Does this look right to you? Rear_d10
Does this look right to you? Dscf5410
No Ringfad???? But I see an Aussie in there and he doesn't look inverted.


__________________________________________________
1992 K100LT 0193214 Bertha Alaska Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 105,200 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell Now 36,188  miles
    

19Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 2:38 pm

Bonzo

Bonzo
Platinum member
Platinum member
@stanthomas wrote:Looks like EBC agree it's not right and you'll be able to exchange the disc for one with the correct rotation.

This is the reply from Gareth Preston, EBC Motorcycle Technical Advisor:

As my previous email advises, I believe Bonzo has the incorrect directional disc. This is a production error and I have checked the remaining stock and no other discs we have here in the factory are affected.


I shall sign up to the forum and place a comment on the forum thread asking anyone affected to get in contact.

Thanks for that Stan. I'm definately struggling to 'unsee' this  Does this look right to you? 259495


__________________________________________________
1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

20Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Mon Jun 22, 2020 6:46 pm

Stan

Stan
Life time member
Life time member
Spike Milligan made sure that his words were put on his grave stone. "I told you I was sick." What a Face


__________________________________________________
1983 K100 basic vin 0003960 colour red  GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

21Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Fri Jun 26, 2020 3:40 pm

Bonzo

Bonzo
Platinum member
Platinum member
Normal service has been resumed.

With many thanks to stanthomas who reached out to EBC behind the scenes, Gareth Preston contacted me and confirmed that there was no safety issue with running the discs out of swing, however they looked 'wrong' and so we arranged a swap for a new 'right' disc which arrived this afternoon. Pretty good customer service there from EBC I'd say.

So, all is well and massive thanks again to Stan & Gareth  cheers
Does this look right to you? Img_2023

EDIT* Blimey my bike is minging dirty. Current hose pipe ban is my excuse  Embarassed



Last edited by Bonzo on Fri Jun 26, 2020 4:13 pm; edited 2 times in total


__________________________________________________
1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

22Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Fri Jun 26, 2020 3:49 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Ain't it sweet when a corporation actually care what their customers think of a product, even if it's just wrong to look at?! Kudos to StanThomas, and to EBC. I continue to use EBC brake pads, brake discs and clutch discs/plates on my own bikes and have successfully used their product on many customers' bikes over the years.


__________________________________________________

Sometimes I lie awake at night, and I ask, "What can I do to keep my life from going by so fast?" Then a voice comes to me that says, "Try slowing down at the corners." 

~Charlie Brown

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

    

23Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Fri Jun 26, 2020 3:57 pm

Bonzo

Bonzo
Platinum member
Platinum member
@Two Wheels Better wrote:Ain't it sweet when a corporation actually care what their customers think of a product, even if it's just wrong to look at?! Kudos to StanThomas, and to EBC. I continue to use EBC brake pads, brake discs and clutch discs/plates on my own bikes and have successfully used their product on many customers' bikes over the years.

Well said TWB, couldn't agree more.

I'll be replacing the fronts at a later date and EBC's will be a no brainer.

(Gareth mentioned he is awaiting acceptance to the forum or he would have posted earlier. One of the good guys Does this look right to you? 112350 )


__________________________________________________
1990 K100RS 4V (VIN# 6406682)
2017 R1200RS SE Sport
    

24Back to top Go down   Does this look right to you? Empty Re: Does this look right to you? on Fri Jun 26, 2020 4:21 pm

Dai

Dai
Life time member
Life time member
@Bonzo wrote:EDIT* Blimey my bike is minging dirty. Current hose pipe ban is my excuse  Embarassed
You've never seen one of mine then... Shocked


__________________________________________________
'83 K100 upgraded to K100RS spec, '87 K100RT
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California
    

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