BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   k1200/r1100 5 spoke wheels on '85 k100rs Empty k1200/r1100 5 spoke wheels on '85 k100rs on Fri Jun 29, 2012 5:16 pm

freeheelboy

freeheelboy
active member
active member
Hello,

I have a 1985 k100rs I just picked up. The previous owner's son laid it down and rashed the fairings and one fork has a leak and possible slight bend to it.

I want to upgrade the front end, brakes and wheels.

I have a k1100rs fork set with 4 pot brembos I am bolting onto the k100rs.

If I go with the 3 spoke wheels from the k1100rs then it would be bolt and go.

Unfortunately I really like the looks of the 5 spoke r1100/k1200 wheels.

It looks like the front will be a direct bolt on (although I can't find any information on the rotors. Will they work with k1100rs front end?)

The problem seems to lie in the rear. I am rather handy with a wrench and welder and am not afraid to cut/weld or bolt on new parts to make the rear wheel fit but I prefer to keep things as close to stock as possible.

I have not been able to find a detailed account of fitting a rear 5 spoke wheel on a k100rs.

It looks like there will be issues with the muffler and possibly the center stand. Swingarm? (rear 5 spoke wheel is 5 X 17)

I am going to continue to use it as a sport touring bike. I love the weight, wheelbase and simplicity of the design, just want better handling and stopping power.

If the mods become too much or will impede the touring aspects of the bikes (saddlebags) then I will just go with the 3 spokes.... but damn I like the looks of the 5 spokes What a Face

I am asking for any help, guidance or links that can help with this modification.

Thanks in advance.

    

charlie99

charlie99
VIP
VIP
heres a few links to what we have done recently

http://k100rt.aforumfree.com/t2713-wider-wheels-radial-tyres-on-a-k100


modified k1100 centre stand bolted up to the k100 rt


k1200/r1100 5 spoke wheels on '85 k100rs Pics_010


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Ok1200/r1100 5 spoke wheels on '85 k100rs Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

freeheelboy

freeheelboy
active member
active member
yeah thats a great post. I'll be following that if I end up putting the three spokes on but I am trying to see what the mods are for the 5 spoke k12/r11 wheels. Especially the rear.

Thanks for any help on links.

    

RicK G

RicK G
admin
admin
The 3 spoke wheel is very marginal on a K100 unless you use a paralever drive and swingarm. I have seen a 5 spoke on a K1100 with a paralever setup but there is no wayu a front 5 spoke will go onto a K100 or K1100 front end and a front end from a bike with a 5 spoke will not fit on a K100 or K1100.
If you really want to do the job I dare say it could be done but I certainly would not like to be paying the engineering bill you would be better off just buying a K1200 and keep the left over for a bit of riding.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

freeheelboy

freeheelboy
active member
active member
Hey Rick
Thanks for the comment.

You raise some good points.

The main modification on the front wheel is to cut a new stainless axle and spacer. Other than that the 5 spoke will work great on the k1100 front end.

I have done this a few times on some airhead projects and it runs about $50-$75 at a machine shop in my building.

I've run across several pics of people (mostly EU forums) dropping both 3 and 5 spoke wheels on k100s


I've rounded up all the parts to do the swaps for about $600

I like the k100 platform as they're lighter and simpler than the k1100rs for sport touring. They're simple and the 1985 had a hotter cam set up that gives them enough pep and a smooth delivery of power.

I just want to upgrade the front end, braking and traction.

    

RicK G

RicK G
admin
admin
I would be interested to see the conversion as I have understood that the 5 spoke have the bigger floating discs that attach directly to the wheel spokes. Please post some pics I would like to see how it is done.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

Inge K.

Inge K.
VIP
VIP
@Rick G wrote:I would be interested to see the conversion as I have understood that the 5 spoke have the bigger floating discs that attach directly to the wheel spokes. Please post some pics I would like to see how it is done.

http://www.k11og.org/forum/viewtopic.php?t=11350&sid=2e8b236265038533378a0d813cc63ab1


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

RicK G

RicK G
admin
admin
I think the best part of that thing is the wheels.
Maybe it's just that I don't like most cafe racers as they have an unfinished look about them.
Looks like he is running carbs too.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

Inge K.

Inge K.
VIP
VIP
@Rick G wrote:Looks like he is running carbs too.

..........it looks like it`s just KN`s on the end of the intake tubes.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

RicK G

RicK G
admin
admin
Yeah I can see the bar across the back of the TBs but it don't make it look any better.
Should have a collar and leash on it.
One that I do like is the one that scheffers is building it probably will turn out looking finished.
Blakey might like it, Red with black zip ties.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

11Back to top Go down   k1200/r1100 5 spoke wheels on '85 k100rs Empty Re: k1200/r1100 5 spoke wheels on '85 k100rs on Sun Aug 05, 2012 10:30 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Ta for the link, Inge. That thing looks rough as guts. I appreciate it for it basic-ness. It shows what can be done with a will and some hand tools in a back shed. Am I wrong or is that a piece of flat, mild steel holding the calipers onto the fork leg? Man.

An MOT or TUV inspector wouldn't like it much. Perhaps that's what I like about it.


__________________________________________________

“Some people see things that are and ask, ‘Why?’. Some people dream of things that never were and ask, ‘Why not?’. Some people have to go to work...

~George Carlin

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.

    

12Back to top Go down   k1200/r1100 5 spoke wheels on '85 k100rs Empty Re: k1200/r1100 5 spoke wheels on '85 k100rs on Sun Aug 05, 2012 10:48 am

Inge K.

Inge K.
VIP
VIP
Yeah, think it would be a bit fun for you guys down there who like to play with the wheels.........
and especially since it also is a Aussie.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

13Back to top Go down   k1200/r1100 5 spoke wheels on '85 k100rs Empty wheel adapter possible on Wed Jun 18, 2014 8:04 pm

MikeisonTV

MikeisonTV
Silver member
Silver member
http://www.motorsport-tech.com/wheel_adapters.html

can always get an adapter from a 4 to a 5 lug


__________________________________________________
Yep! I'm flipping through the air....that ain't good.
    

Dale S

Dale S
Silver member
Silver member
@Inge K. wrote:
@Rick G wrote:Looks like he is running carbs too.

..........it looks like it`s just KN`s on the end of the intake tubes.

I'm wondering how well it runs without the mass air-flow sensor/flapper
inside the missing air cleaner box?


__________________________________________________
1990 BMW K100LT
 2003 BMW 540i
 1998 Ford f-150
    

robmack

robmack
Life time member
Life time member
@Dale S wrote:I'm wondering how well it runs without the mass air-flow sensor/flapper
inside the missing air cleaner box?
It's a K1100 and with the Motronic, there is no MAF like on the K100.



Last edited by robmack on Thu Jun 19, 2014 4:05 pm; edited 1 time in total (Reason for editing : Corrected my mistaken terminology (MAS->MAF))


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

Brad-Man

Brad-Man
Life time member
Life time member
Actually, the K100 4v and K1100's used MAS - Mass Air Sensors, while the early K's used MAF - Mass Air Flow sensors.

Big difference.  

In the MAF the air goes through the opening and actually opens a vane (air pressure) which causes a potentiometer to vary voltage as a signal.

MAS sensors have a heated wire in place of the vane (less impediment to airflow, less finicky).

Both combine those signals with outside air temperature and other readings to regulate fuel flow.

MAS is much more accurate.

    

Inge K.

Inge K.
VIP
VIP
I know the hotwire flow sensor from working with cars, but I never seen such a device in the air intake system on a 4V K-model.

I would like to know where it's hidden and if possible the part number, please.


__________________________________________________
Inge K.
K100RS -86. (first owner), K1100LTSE -94.
    

sidecar paul

sidecar paul
Life time member
Life time member
Here's a 5 spoker in a K100; he told me he just used 2 of the steel spacers.

 k1200/r1100 5 spoke wheels on '85 k100rs Sam_0817

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

RicK G

RicK G
admin
admin
I would bet it's 20mm ofset to the left, at least right hand corners would be a breeze.


__________________________________________________
"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 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum