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1Back to top Go down   Bigger Rear Wheel? Empty Bigger Rear Wheel? Tue Oct 06, 2015 5:27 pm

JaseYPK

JaseYPK
Silver member
Silver member
Hey guys,

What wheels are direct replacement that I could match to the front wheel on my 84 RS?

I'm after something a bit wider if available!

Cheers


__________________________________________________
1984 K100 RS - The Project!
    

2Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Tue Oct 06, 2015 6:21 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
That's a project in itself.

Standard wheel can take 140 x 80 rear tyre.....

Centre stand and swing arm are limiting factors, particularly swing arm........150 tyre will just about contact it......17" tyres are limited choices too.

Changing rear end to the later Paralever from the 16 valve plus change of main stand I think allows a wider three spoke wheel to be fitted but to then match the front I think involves work to the forks too. Someone else will have to fill you in on that.


__________________________________________________
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
    

3Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Tue Oct 06, 2015 7:01 pm

robmack

robmack
Life time member
Life time member
Download and read this Word document , a collection of articles assembled from various posts to various Internet forums. It is all the good information about fitting K1200 / R1100 wheels and wide tires to classic K-bikes. It's big, 54MB, because of lots of pictures.

If your kaffe-ing your bike, you might be interested in spoked wheels to give it that retro look. Download and read all the files in this directory to understand how that is accomplished. If you're more of a movie buff, see the film instead of reading the book.




Last edited by robmack on Tue Oct 06, 2015 10:56 pm; edited 1 time in total (Reason for editing : Oops, Changed to copy entire post for those not registered in Motobrick)


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

4Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Tue Oct 06, 2015 10:41 pm

Two Wheels Better

Two Wheels Better
Moderator
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You have to be a member of Motobrick to properly access the link.

You enquire in the heading about rear then request front only. Do you mean the set?

For those who aren't (like me) the only reasonable way to fit a larger (meaning wider) front wheel is to use a 17" wheel from a K1100RS or K100-16V so a 120/70ZR17 street tyre can be fitted as compared to the 100/90... or plus one 110/80x18. This involves bearing changes and spacer mods, the 305mm brake discs and why not go for four piston Brembos while you're there!? Best to fit a set of Marzocchi forks from the 16V models so it all lines up, too.

Using a Paralever rear end and swingarm means a gearbox change for the forward tab that the 'torque arm' bolts to. You can then get a 4.5X18 out the back for a 160/60ZR18.


__________________________________________________

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
    

5Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 2:16 am

JR_K100RS

JR_K100RS
Life time member
Life time member
G'day JaseYPK , have a read of this

https://www.k100-forum.com/t2713-wider-wheels-radial-tyres-on-a-k100

a few of the forum members have gone down this path ( including me )

John R


__________________________________________________
Diamond Grey ( 617 ) 1987 K100RS ( European Delivery ) Original owner
    

6Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 11:08 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Thanks for the memories, JR! I can't believe it's been over four years since I started that thread. When I return to Qld in Feb I'm taking with me a new Michelin 110/80ZR18 PR3 to match the Michie 160/60ZR18 out the back. I've managed to wear out three sets of tyres since fitting the Pirelli Angel ST onto those shiny black rims (still holding up well thanks to Mr Clutterbuck from Motorline BMW- a good painter's work shows through time), and that's not having been home regularly since June of 2012!

(Why does it say Guest? I left the forum for a year or so and when I returned my posts were no longer my own)


__________________________________________________

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
    

7Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 11:24 am

JaseYPK

JaseYPK
Silver member
Silver member
@robmack wrote:If your kaffe-ing your bike, you might be interested in spoked wheels to give it that retro look.  Download and read all the files in this directory to understand how that is accomplished.  If you're more of a movie buff, see the film instead of reading the book.



Wow. I like very much!

Now I just need to brush up on my russian and establish what I need to do.
From the looks of it..
1) acquire wheels
2) acquire paralever rear end
3) acquire brakes that fit
4) change rear coil? 
5) hope it works!

Thanks for the suggestion! Very fond of that plan!


__________________________________________________
1984 K100 RS - The Project!
    

8Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 11:52 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Some basic things to cover before you dive in:

Using a Paralever swingarm/final drive requires a gearbox from a later model due to the torque arm mounting point. Using a Paralever back end will lengthen the wheel base approximately 50mm. Now we have a large barge unable to change direction as we like. To accommodate that we source a K1100RS or K100-16V Marzocchi front end which does two things. First it keeps the wheelbase length intact due to its 'tighter' dimensions, secondly it allows us to use larger, stronger brakes and 'wider' tyres to slow down, and corner well, all that moving mass we've created. While you're at it get a 20mm master cylinder and 35mm throttle bodies from a K11. You'll need the larger diametre master cylinder for the four piston Brembos anyway. This has all been covered here in this forum and others. A few quick searches will reveal all.

It's fun and there's heaps of info to use as you progress through the project.

Keep us informed. We like piccies too!


__________________________________________________

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   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 11:57 am

JaseYPK

JaseYPK
Silver member
Silver member
@Two Wheels Better wrote:Some basic things to cover before you dive in:

Using a Paralever swingarm/final drive requires a gearbox from a later model due to the torque arm mounting point. Using a Paralever back end will lengthen the wheel base approximately 50mm. Now we have a large barge unable to change direction as we like. To accommodate that we source a K1100RS or K100-16V Marzocchi front end which does two things. First it keeps the wheelbase length intact due to its 'tighter' dimensions, secondly it allows us to use larger, stronger brakes and 'wider' tyres to slow down, and corner well, all that moving mass we've created. While you're at it get a 20mm master cylinder and 35mm throttle bodies from a K11. You'll need the larger diametre master cylinder for the four piston Brembos anyway. This has all been covered here in this forum and others. A few quick searches will reveal all.

Thanks for the heads up!

I've just found both front and rear spoked wheels, brembo callipers to fit both, and the master cylinder, for a bargain price of £630.

I say bargain, because its significantly cheaper than what I've seen elsewhere. But its still a lot of money.. Guess this project may take longer than expected haha. Especially since I now need to budget for new forks... haha. I'll stick some photos up in my build thread now!


__________________________________________________
1984 K100 RS - The Project!
    

10Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 12:24 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
If the spoked wheels and four piston Brembos are from an R11XXGS, and I suspect they are, then beware the calliper mount spacing as they will not fit either K100-8V (or 16V) calliper fork spacing unless they're from a pre-servo assisted brakes GS and you're using them on a Marzocchi fork. Also, the axle/bearings required are of a different diametre. It looks easy, but is not always.


__________________________________________________

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
    

11Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Wed Oct 07, 2015 12:38 pm

JaseYPK

JaseYPK
Silver member
Silver member
@Two Wheels Better wrote:If the spoked wheels and four piston Brembos are from an R11XXGS, and I suspect they are, then beware the calliper mount spacing as they will not fit either K100-8V (or 16V) calliper fork spacing unless they're from a pre-servo assisted brakes GS and you're using them on a Marzocchi fork. Also, the axle/bearings required are of a different diametre. It looks easy, but is not always.

Definitely a job for when I've got a bit more money then. Thanks!


__________________________________________________
1984 K100 RS - The Project!
    

12Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Thu Oct 08, 2015 8:04 am

92KK 84WW Olaf

avatar
Life time member
Life time member
As I said, that's a project in itself.

But the outcome seems worth it.

Over here we can buy a whole K for the cost of that conversion......So the choice is 'More K' or 'more Ks'.


__________________________________________________
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
    

13Back to top Go down   Bigger Rear Wheel? Empty Re: Bigger Rear Wheel? Thu Oct 08, 2015 1:58 pm

JaseYPK

JaseYPK
Silver member
Silver member
A lot of work and a lot of money, but maybe one day I'll have to cash to do it!! In the mean time I'll just stick with a slightly wider tyre I think Sad
Thanks for the advice!


__________________________________________________
1984 K100 RS - The Project!
    

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