BMW K bikes (Bricks)

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1Back to top Go down   Support for K100 top box Empty Support for K100 top box Wed May 22, 2013 4:40 am

bolts

bolts
active member
active member
When I
purchased my 1985 K100RS it came complete with panniers and the BMW 22 litre
top box. After a while I realised there are shortcomings with BMW top box (apart
from small capacity), such as the way the latch operates effectively reduces
the available volume as jackets, wet gear etc. can get caught in it. The lids
also have an unfortunate habit of opening when barrelling down the road,
scattering stuff everywhere.
I looked at getting a Ventura type rack and bag but it is not compatible with
OEM panniers, at least for 8V K100RS. I decided to purchase a new top box (with
universal mounting plate) and a mounting rack from the wreckers. However I was
concerned about the ability of the fibreglass tail section to cope with the
extra load and came up with the idea of using eye and eye turnbuckles
internally in the tail section.



When I attached the ‘new’ mounting rack, I used allan head bolts and the largest
washers (OD), that would fit. On the top side I formed washers to the shape of
the tail piece as best I could.
I discarded the original mudflap retaining shackle for 2 m6 bolts approx 25mm
longer than those on the shackle and then placed 2 washers above the nyloc nuts
inside the tail piece.
Next was the fiddly part. The turnbuckle eye ends now had to be bent to shape
(using heat) to fit one end over the mudflap bolts and the other over the allan
head srews. Once all the eyes are bent to shape it was just a matter of
tightening each turnbuckle to make them tight.



eye to eye turnbuckles
Support for K100 top box Eye_tu11

mounting plate
Support for K100 top box Img_3419

mudflap bolts
Support for K100 top box Img_3420

inside tail view showing 4 turnbuckles with eyes bent and washers
Support for K100 top box Img_3421

finished job
Support for K100 top box Img_3512

I have since travelled close to 1000kms and have had no problems with the turnbuckles working loose.
Hope this helps someone.


__________________________________________________
1985 K100RT, VIN 0029031
1985 K100RS, VIN 0083583
1973 Honda CB750
1948 AJS 500
All on club plates
    

2Back to top Go down   Support for K100 top box Empty Support for K100 top box Wed May 22, 2013 4:51 am

bolts

bolts
active member
active member
Sorry guys (and gals?)
I have just realised my previos post should probably be in a new topic.
I don't know how/if it can be changed. What a Face


__________________________________________________
1985 K100RT, VIN 0029031
1985 K100RS, VIN 0083583
1973 Honda CB750
1948 AJS 500
All on club plates
    

3Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 5:02 am

blaKey

avatar
Life time member
Life time member
Topic split for your enjoyment!


__________________________________________________
Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

4Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 6:19 am

Guest

avatar
Guest
Looks like a bit of overkill for something that is only supposed to carry 5kgs. My Givi topbox is fitted just to the tail section without any problems.

    

5Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 10:37 am

Crazy Frog

Crazy Frog
admin
admin
bikerboy wrote:Looks like a bit of overkill for something that is only supposed to carry 5kgs. My Givi topbox is fitted just to the tail section without any problems.

A friend had one leg of the bracket going right through the cowl.
She didn't notice that one bolt was loose and she was riding on a dirt road (kind of washboard).
This system would have prevented this incident.

I have a Givi e460 and find that with the original bracket, it's mounted way too high.
I am almost considering removing the cowl and have the top case mounted on the bike's frame.

One German store (Don't remember which one) was selling a Givi type top case with the indentation for the cowl. The only problem is that it reduces the capacity of the case.


__________________________________________________
Support for K100 top box Frog15Support for K100 top box Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

6Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 3:38 pm

sidecar paul

sidecar paul
Life time member
Life time member
Hi bolts,
I'm not a fan of top boxes..........but I love ingenious solutions Support for K100 top box 292303

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!
    

7Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 7:49 pm

bolts

bolts
active member
active member
bikerboy wrote:Looks like a bit of overkill for something
that is only supposed to carry 5kgs. My Givi topbox is fitted just to
the tail section without any problems.
I too have heard of cowlngs being broken - in fact I was warned against fitting a top box by my local mechanic.
Total parts cost about $25 AUD
Time to fit about 2 hours.
Time to come up with solution - too many cold ones to remeber Wink


__________________________________________________
1985 K100RT, VIN 0029031
1985 K100RS, VIN 0083583
1973 Honda CB750
1948 AJS 500
All on club plates
    

8Back to top Go down   Support for K100 top box Empty Re: Support for K100 top box Wed May 22, 2013 9:25 pm

rosskko

rosskko
VIP
VIP
If only I had photos of the huge holes left in my rear cowling after the previous owner fitted a top box and had it come off.
My little rack on the back now carries no more than a sleeping bag. Or a bottle of Dr Jurds. Depending on the destination.
Maybe the Jurds should be inside the bag? hmmmm.

Seems like I found a photo post repair.
There were two massive holes (3") in the middle from some after market thing he did and the original holes were torn out.
Support for K100 top box Dsc_0010


__________________________________________________
1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

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