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Another top-box solution
Posted: Tue Apr 15, 2008 3:03 am
by MartinW
Re: Another top-box solution
Posted: Tue Apr 15, 2008 3:22 am
by taosports
Re: Another top-box solution
Posted: Tue Apr 15, 2008 3:31 am
by MartinW
taosports
'Imitation is the sincerest [form] of flattery.'
Charles Caleb Colton, Lacon, volume I, no. 183
(1780 - 1832)
MartinW
Re: Another top-box solution
Posted: Tue Apr 15, 2008 4:17 am
by riceburner
Did the same myself last year.
Only difference is that I mounted the top-box directly to the chopping board (I didn't have a mounting plate, the box was a freeby from an old friend).

Takes 3 minutes to fit or remove the assembly by using the rack side bolts and the bike looks good either way.

Tis utterly stable too.

Re: Another top-box solution
Posted: Tue Apr 15, 2008 4:38 am
by MartinW
Riceburner,
I did consider that option as well but I like the lift-off-in-two-seconds capability of the mounting plate. The advantage of your method is greater security though.
You mention 'utterly stable' and this was a concern of mine, in that ultimately the box is only held on by a couple of bolts through some not very thick plastic on the luggage-rack mounting rails. Should I be worried about long-term stability I wonder?
Re: Another top-box solution
Posted: Tue Apr 15, 2008 4:57 am
by boxermania
Congrats, great install and looks good too. To everyone......

Re: Another top-box solution
Posted: Tue Apr 15, 2008 7:45 am
by riceburner
MartinW wrote:Riceburner,
I did consider that option as well but I like the lift-off-in-two-seconds capability of the mounting plate. The advantage of your method is greater security though.
You mention 'utterly stable' and this was a concern of mine, in that ultimately the box is only held on by a couple of bolts through some not very thick plastic on the luggage-rack mounting rails. Should I be worried about long-term stability I wonder?
I actually used just 4 bolts to hold the topbox/"rack" together - each one goes through the rack side plate holes, then the chopping board, then the top-box and the nuts are inside. I didn't therefore need extra holes in the chopping board. I also included a dural (aluminium & something else alloy) plate in the bottom of the top box to ensure that the thin plastic of the base of the box wasnt' too stressed. I think this helps a fair bit with the stability because a large portion of the box is now "clamped" to the chopping board. I'll try to take pics this weekend when I do my brake lines and shock replacements.
Re: Another top-box solution
Posted: Tue Apr 15, 2008 10:11 am
by taosports
MartinW wrote:taosports
'Imitation is the sincerest [form] of flattery.'
Charles Caleb Colton, Lacon, volume I, no. 183
(1780 - 1832)
MartinW
Yup, we all need to thank MixR for the kitchen utensil idea.

MixR used to participate on this board.
Glad it worked for you Martin! Looks great!
Re: Another top-box solution
Posted: Tue Apr 15, 2008 10:23 am
by MartinW
I had no idea that this was such a tried-and-tested method. Perhaps I read the thread some time back and my subsconscious mind recently suggested it to my conscious mind as an 'original' idea. Well done to MixR for coming up with the idea in the first place.
Re: Another top-box solution
Posted: Tue Apr 15, 2008 10:55 am
by hank
For proper stability you need something like the Givi SR683 carrier brackets, the top plate is specific to givi boxes and wont be of use to you but the brackets fit behind the pannier rails and the top brackets replace the parts that your chopping board is mounted to. This setup adds some support to the rear of the top box mounts and makes the whole set up stronger and more stable.
There is one on Ebay at the moment
http://cgi.ebay.co.uk/BMW-R1150R-GIVI-S ... otohosting
I have been using this same set up with a Shad 48 litre top case on my bike for the past two years, just had to drill the Shad mounting plate to corrospond with the hles on the Givi top brackets.
Hank.
Re: Another top-box solution
Posted: Tue Apr 15, 2008 11:23 am
by MartinW
Hank, Thanks for the info and the eBay link. Martin W
Re: Another top-box solution
Posted: Tue Apr 15, 2008 11:47 am
by stilldking
I too stole that idea, but left the Pirates Lair backrest plate and used that to brace the mounting plate for my Emgo case.
Stainless hardware and aluminum "C" channel made for a very stable mount.
Still need to chop the overhang, but it's not visible from above.
Although, I did have to stack a couple nylon washers to keep the Emgo plate from flexing too much.
JC
Re: Another top-box solution
Posted: Tue Apr 15, 2008 3:21 pm
by riceburner
hank wrote:For proper stability you need something like the Givi SR683 carrier brackets, the top plate is specific to givi boxes and wont be of use to you but the brackets fit behind the pannier rails and the top brackets replace the parts that your chopping board is mounted to. This setup adds some support to the rear of the top box mounts and makes the whole set up stronger and more stable.
There is one on Ebay at the moment
http://cgi.ebay.co.uk/BMW-R1150R-GIVI-S ... otohosting
I have been using this same set up with a Shad 48 litre top case on my bike for the past two years, just had to drill the Shad mounting plate to corrospond with the hles on the Givi top brackets.
Hank.
I used my setup last year for a run to France, fully loaded (well - clothes mostly) topbox and max speed runs and it didn't move at all.

Those side rails that bolt to the panner rails are pretty stiff.
Re: Another top-box solution
Posted: Sat Apr 19, 2008 2:42 pm
by riceburner
riceburner wrote:MartinW wrote:Riceburner,
I did consider that option as well but I like the lift-off-in-two-seconds capability of the mounting plate. The advantage of your method is greater security though.
You mention 'utterly stable' and this was a concern of mine, in that ultimately the box is only held on by a couple of bolts through some not very thick plastic on the luggage-rack mounting rails. Should I be worried about long-term stability I wonder?
I actually used just 4 bolts to hold the topbox/"rack" together - each one goes through the rack side plate holes, then the chopping board, then the top-box and the nuts are inside. I didn't therefore need extra holes in the chopping board. I also included a dural (aluminium & something else alloy) plate in the bottom of the top box to ensure that the thin plastic of the base of the box wasnt' too stressed. I think this helps a fair bit with the stability because a large portion of the box is now "clamped" to the chopping board. I'll try to take pics this weekend when I do my brake lines and shock replacements.
As described above :
The stiffening plate Inside the box (and I've used the nuts to hold down a retaining strap with clips - handy for when you're not transporting much).
Here you can just see a couple of the bolt heads under the box.

Re: Another top-box solution
Posted: Sun Apr 20, 2008 4:09 am
by MartinW
Nice job Riceburner.
Re: Another top-box solution
Posted: Sun Apr 20, 2008 4:51 am
by bikermeow
Just curious ... what did you guys used to cut through a 8 mm chopping board? and to control the shape?
Cheers
Cat
Re: Another top-box solution
Posted: Sun Apr 20, 2008 5:01 am
by MartinW
I started off using a Dremel but the cutting disc broke so I resorted to a coping saw. Finish it off the cut edges with some sandpaper.
Re: Another top-box solution
Posted: Sun Apr 20, 2008 6:50 am
by riceburner
Err, I think I took off large chunks with a hacksaw, then shaped with a coarse bastard file, then finished with finer files (well - I will admit I didn't do much fine work...

).
Re: Another top-box solution
Posted: Sun Apr 20, 2008 10:31 am
by johnnyjs1
Scroll saw with a fine blade works great, you can manuever the cutting board, instead of moving the saw. Helps control the cuts much better. Then sand the edges to get rid of the melted bits left behind. Or just pick off the melted plastic and run a lighter or one of those fireplace lighters along the edge, and it'll smooth it out nicely.
Re: Another top-box solution
Posted: Mon Apr 21, 2008 7:20 am
by kantuckid
I cheated ,not having the OEM luggage rack or brackets for it, I started with sidecase brackets and bought the Bestrest plate and bolted the Chinese topcase plate to that, using a rubber isolation layer in between the two plates. I took the Chinese/EBAY $50 version on 7k trip to Mexico and had no problems. Not trusting the lip seal on the case , I used black silicone to embed BMW car, 3 series, oil filter O-rings down into the groove in the lower half of the topcase. I also made a backrest -long narrow oval piece of plywood w/ 2 mtg screws thru it,covered with foam and leather and fastened to the case adjacent to the hinge area. This pad is not in the way for a single rider but makes a nice backrest for my wife on local runs. I will tell you , that if you go the Chinese case route(maybe they're all made there, but they sure aren't priced that way!)I had one of the plate locking studs missing when I got back home from my long trip. I simply cut down a carriage bolt to fit with a tubing spacer for box fit to replace it. The originals are riveted to the plate and flimsy. You could also braze the underneath side of these if they look loose when you get the setup. Otherwise I see little difference between these and the GIVI, which they are obviously cloned from.
As a side note if any of you entreprenurial types want to make some money, do this: Go to Mexico with a shipload of the Chinese topcases of various sizes and sell them to the gadzillion people down there that have a Chinese scooter or bike with no topcase...