BMW K bikes (Bricks)

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1Back to top Go down   Cast iron front discs? Empty Cast iron front discs? on Sat May 17, 2014 2:09 pm

troubleshooter

troubleshooter
active member
active member
Does anyone know about solid (undrilled) discs for the front on a k? I have a normal pair (with drilled holes) that need replacing and have seen some second hand solid ones? Worth following up?

Thanks, Mike

    

2Back to top Go down   Cast iron front discs? Empty Re: Cast iron front discs? on Sat May 17, 2014 5:56 pm

92KK 84WW Olaf

92KK 84WW Olaf
Life time member
Life time member
Oi thought solid discs were for rear, just put one on the RT. The original front drilled discs are stainless steel. I have seen an option to change for cast iron but not sure if they are solid or drilled.


__________________________________________________
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 100,380 miles
1983 K100RS 0011171 Fricka 606 29,495 miles Damn K Pox Its a Bat outta Hell No 33,600 miles
    

3Back to top Go down   Cast iron front discs? Empty Re: Cast iron front discs? on Sat May 17, 2014 8:57 pm

RicK G

RicK G
VIP
VIP
I would not have undrilled discs on the front. The biggest advantage of drilled discs is water clearance on a wet disc and that is a big thing that the brake starts working immediately not after 2 revolutions of the wheel to clear the water. You are also far less likely to lock a wheel in the wet with drilled discs.
Cast iron is a far better braking medium than stainless but it isn't anywhere near an pretty.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

4Back to top Go down   Cast iron front discs? Empty Re: Cast iron front discs? on Tue May 27, 2014 8:22 am

Snod Blatter

Snod Blatter
Life time member
Life time member
I have cast solid discs on the front, they are fitted to the original carriers with bolts in a refurb kind of style. I think the pads are Ferodo Platinum (hard to tell as the markings have worn off the back!) and have not noticed any wet weather lag but the brake fade is quite phenomenal, I only get one good stop and then the lever is halfway back to the bar. Stop hard again less than 10 seconds later and I have to leave the front brakes alone for about 15 seconds, otherwise there is a dangerous lack of stopping power.

They have also pitted quite badly in the rain where the pads sat next to them, and no longer brake smoothly - it might be an MOT fail, certainly bad enough for an advisory. The front wheel is also constantly covered in dust and rust if such a thing bothers you!


__________________________________________________
1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

5Back to top Go down   Cast iron front discs? Empty James Sherlock discs on Tue May 27, 2014 9:13 am

troubleshooter

troubleshooter
active member
active member
Thanks everyone for you feedback - I've decided and just fitted a pair of Hekkane remanufactured discs from James Sherlock - £102 each......

Will let you know how they do!

    

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