1150gs rear rack brace ?

[DR268]

I've searched but didn't find any actual solutions

The rack seems to be an issue at times so I'm going to try and avoid any problems

I'm aware Givi make strengthening brackets but they dont seem to sell them separately and the kit is pricey

Did anyone make alternatives either at home or professionally and have pictures ? I am happy to do a bit of metal fabricating but like a bit guidance (something to copy)

thanks

 

[MikeO]

Hi DR268

I had a brace (made by Wunderlich, if I remember correctly), which bolted to the indicator mounts and supported the rear rack (a standard GS one, not an Adv) - you can just make it out in this pic:

Unfortunately this bike burned out in 2012, and I haven't replicated it on the replacement 1150. I have, however, got a reinforced rear subframe ready to fit:

Webs welded by Chad of this parish

I may swap the subframes over this winter (Chad finished the work in May 2015 and the frame has been sitting in my garage ever since )...

 

[bowie]

Made and fitted this a few years ago, never been a problem even though sometimes it's had plenty of weight on

 

[Timolgra]

It's not necessarily down to the just the weight but more of what terrain your riding, a 30lb bag will do much more damage going over one big whoop than 100k miles of road.

 

[MikeO]

It's not necessarily down to the just the weight but more of what terrain your riding, a 30lb bag will do much more damage going over one big whoop than 100k miles of road.

Pretty sure it's the weight in my case...

 

[Aidan1150]

I did.

I was making a rear rack plate to give me the option to use a variety of boxes, a Pelican case, a Givi topbox or a large Caja Sahel aluminium top box but like you I wanted to add some support under the rack to be able to carry a fair bit of weight and to prevent cracking, breakage etc.

If memory serves I used two lenghts of 20mm steel bar which I turned down in diameter over a 40mm length so that it would slide up inside the two rear frame rails where they are screwed into place. The back of the two lengths have an M8 threaded hole up in the centre where I bolted a piece of angle iron to sit up under the plate to carry the weight.

I must go and take a few pictures for you, or if you happen to be anywhere near Newry or Jonesborough any weekend you are welcome to call and see how I did it.

HTH

 

[DR268]

I did.

I was making a rear rack plate to give me the option to use a variety of boxes, a Pelican case, a Givi topbox or a large Caja Sahel aluminium top box but like you I wanted to add some support under the rack to be able to carry a fair bit of weight and to prevent cracking, breakage etc.

If memory serves I used two lenghts of 20mm steel bar which I turned down in diameter over a 40mm length so that it would slide up inside the two rear frame rails where they are screwed into place. The back of the two lengths have an M8 threaded hole up in the centre where I bolted a piece of angle iron to sit up under the plate to carry the weight.

I must go and take a few pictures for you, or if you happen to be anywhere near Newry or Jonesborough any weekend you are welcome to call and see how I did it.

HTH

cheers

pics would be great

 

[Deleted account 210214001]

cheers

pics would be great

I'll second the request for photos is you're able to post some.

 

[Ian J Hartley]

As MikeO says. It was originally provided by Wunderlich. Not sure it's still available. But it's called a rear carrier support part No 8160500

It attaches to the rear pannier fastening points. It's made of tubular steel welded to two flat plates that fit between the frame and pannier rails using longer screws. It fits flush to the underside of the aluminium plate and therefore designed to transfer any load to the pannier mounts. I've had one fitted for years, it seems to do the trick.


Ian

 

[Stujw70]

These are the Givi rear rack instructions with the rear support arms.

Can take some pics of the arms tomorrow if needed

 

[DR268]

As MikeO says. It was originally provided by Wunderlich. Not sure it's still available. But it's called a rear carrier support part No 8160500

It attaches to the rear pannier fastening points. It's made of tubular steel welded to two flat plates that fit between the frame and pannier rails using longer screws. It fits flush to the underside of the aluminium plate and therefore designed to transfer any load to the pannier mounts. I've had one fitted for years, it seems to do the trick.


Ian

Thanks

seems this is discontinued but I'm sure I could knock something up working off these mounting points to give extra support to the rear of the rack

 

[Big Jets]

Funny this getting posted mine snapped The silver alloy rack not the subframe::,with a Zega topbox with lockable mounting bracket ,I was always aware of the play in the system going over bumps and how it shook ,that Wunderlich rack support might be what I'm hunting for plus I'm going to mount it directly and skip the lockable mount

 

[MarkShelley]

I ran a brace from the rear most corner of my top box plate to one of the mushroom bolts on my Givi pannier rails. It looked shite, but there was no perceivable deflection when I put all my weight on the top box plate. I was concerned about it as Imhad moved the top box back a bit to increase pillion room.

 

[Aidan1150]

Not a great picture but you can see just above the indicator where the steel rod fits into the frame rail. If I had removed the seat and tool tray you would be able to see the little bolt that secures the rod inside the frame tube.

A home made solution but it works very well and carried some substantial weight during our three week trip last summer. And with any luck will get a good workout in South America this time next year.

 

[DR268]

Not a great picture but you can see just above the indicator where the steel rod fits into the frame rail. If I had removed the seat and tool tray you would be able to see the little bolt that secures the rod inside the frame tube.

A home made solution but it works very well and carried some substantial weight during our three week trip last summer. And with any luck will get a good workout in South America this time next year.

that's a good job, you seem to have a lot bolted on top so certainly need the bracing