BMW K bikes (Bricks)

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1Back to top Go down   Splines in rear wheel rim Empty Splines in rear wheel rim Fri Dec 20, 2019 9:42 am

tinyspuds

tinyspuds
Life time member
Life time member
Hi,
I have standard 4 spoke wheels and the rear has the (unused) splined inner hub (Dia. 50mm, ID 45mm). Was this wheel also used on other models or is there a chance I have a non-std FD that has a 25mm un-splined ‘stub’?


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

2Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 11:09 am

Dai

Dai
Life time member
Life time member
They're all the same, but dunno what other bikes theye were destined for.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 11:30 am

tinyspuds

tinyspuds
Life time member
Life time member
@Dai wrote:They're all the same, but dunno what other bikes theye were destined for.
Cool. I must have had that wheel off a half dozen times and hadn’t previously registered the splines. Must try harder.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

4Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 11:41 am

duck

duck
Life time member
Life time member
The Y-spoke 2.5x17 was only used on K75 and K100s.

Is this what you mean by splined?

Splines in rear wheel rim JyIIucd


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

5Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 11:50 am

tinyspuds

tinyspuds
Life time member
Life time member
It is Mr D, I suppose ribbed would be a better term. I was just curious about the seeming redundancy really.


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

6Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 11:52 am

duck

duck
Life time member
Life time member
Some R bikes of the era also had Y-spoked wheels. The front wheels were the same but not the rear.  I don't know if the R bikes ever had a disc brake Y-spoke rear wheel.

Splines in rear wheel rim 20181031_155958_resized


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

7Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 4:18 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
@duck wrote:Some R bikes of the era also had Y-spoked wheels. The front wheels were the same but not the rear.  I don't know if the R bikes ever had a disc brake Y-spoke rear wheel.

Splines in rear wheel rim 20181031_155958_resized
The front brake calipers are the same too, but handed because they swapped from in front of the forks to behind.


__________________________________________________
1992 K100LT 0193214 Bertha 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 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

8Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 4:28 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
FYI: Airheads with Monolever swingarms use only a drum brake at the rear. The last disc brake rear Airheads were some of the dual shock S, RS & RT models. 

The K75 drum brake model rear wheel doesn't fit the Monolever Airheads due to an extreme offset. I attempted to install one on a single shock Airhead bike I was putting together back in '08. No go.

As for the 'splines' of Y spoke wheels, sadly they appear to have real job in life.


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '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.

~We all believe what we want to believe in - Rob Dickinson
    

9Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 8:44 pm

tinyspuds

tinyspuds
Life time member
Life time member
@Two Wheels Better wrote:As for the 'splines' of Y spoke wheels, sadly they appear to have real job in life.
Go on I’ll bite. What is the ‘real’ job they perform?


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

10Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 9:12 pm

duck

duck
Life time member
Life time member
Maybe they're there to hold in that little black plastic hub cap.

Splines in rear wheel rim Capuchon-central-de-roue-arriere


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

11Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 10:17 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
My mind typed the word 'no' as in no real job but my fingers apparently didn't listen. Doh!


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '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.

~We all believe what we want to believe in - Rob Dickinson
    

12Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Fri Dec 20, 2019 10:27 pm

tinyspuds

tinyspuds
Life time member
Life time member
@Two Wheels Better wrote:My mind typed the word 'no' as in no real job but my fingers apparently didn't listen. Doh!
I hope you’re not a careers advisor  Splines in rear wheel rim 44271


__________________________________________________
1985 BMW K100RT + Hedingham HUB and LL’s. VIN 0028106. (Not blind to the irony of an April 1 production date).
1986 K100RS in boxes. VIN 0141918.
1954 Royal Enfield 350 Bullet. Original.
    

13Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Tue Dec 24, 2019 4:53 pm

cycleman

cycleman
Silver member
Silver member
There are some subtle differences between the Y wheels on the R & K bikes.  I have a 95 R100RT and a 1986 K100Rt. A friend of mine tired to fit a front brake disk off of a K100 onto a R100 of the same vintage as mine.  It mounted up but it wouldn't fit the rotor.  You would have had to space the rotor to get it to fit.

The R bikes took a 90 tire and the K bikes took a 100 tire on the front, so maybe that had something to do with it.  Also not sure if the forks where the same diameter.

If I ever decide to move the sidecar from my R bike to my K bike, I was going to check if I could just swap the whole front ends as my R sidecar bike has a leading link front end on it.  Someday maybe I'll take some measurements.

    

14Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Tue Dec 24, 2019 5:26 pm

duck

duck
Life time member
Life time member
The front Y wheels on the Ks and Rs are the same part - 36311451897.

But the brake rotors are different. For example, rotor 34111457386 was only used on Ks.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

15Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Tue Dec 24, 2019 11:04 pm

cycleman

cycleman
Silver member
Silver member
@duck wrote:The front Y wheels on the Ks and Rs are the same part - 36311451897.

But the brake rotors are different. For example, rotor 34111457386 was only used on Ks.
I believe the calipers and the brake disk's are different between the two bikes, as a front disk off a K wouldn't fit on the fellows R100RT ( late model ). So If I was doing a front end swap between an R & K I'd have to swap everything brake related.

    

16Back to top Go down   Splines in rear wheel rim Empty Re: Splines in rear wheel rim Tue Dec 24, 2019 11:13 pm

duck

duck
Life time member
Life time member
Calipers are the same too - 34112310309 & 34112310310.

The rotors are probably different because the R forks had them spaced out from the wheel differently.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

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