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Old 01-24-2015, 09:42 AM   #1
doublemocha OP
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DMC subframe for R1150GS Adventure

please share with me your experiences with DMC subframe for R1150GS Adventure. i am sorry if this has been covered i am a newbie, i am planning on putting a sidecar on my bike.... thanks much.
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Old 01-24-2015, 10:37 AM   #2
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Old 01-24-2015, 10:49 AM   #3
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I had one on WUMPA (see my sig thread -- page 33) when I flipped it into a ditch. The subframe was undamaged and I ended up selling it to some guy back East somewhere -- Colorado maybe? So my subframe worked good. But I had the old 2-piece subframe and I think the latest DMC version is one piece. Here's what mine looked like after the wreck--

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Old 01-24-2015, 11:39 AM   #4
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Quote:
Originally Posted by DRONE View Post
I had one on WUMPA (see my sig thread -- page 33) when I flipped it into a ditch. The subframe was undamaged and I ended up selling it to some guy back East somewhere -- Colorado maybe? So my subframe worked good. But I had the old 2-piece subframe and I think the latest DMC version is one piece. Here's what mine looked like after the wreck--

I think I have the same one on my GS except I bought it in 2008. I have over 40,000 miles on it through all kinds of terrain on and off road and it is still holding up. I pull it off once a year just to check that everything is still holding up.
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Old 01-24-2015, 12:43 PM   #5
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Suit yourself

Claudes R1150 subframes



The two arms with plate on bolt to an arm that runs across the inside of the GS's rear subframe making it much stiffer.
If you really want to do this DMC builds a nice little subframe not as robust as the other, uses 2 heims and 2 rod ends, leaving only half the clamping force to transfer load from sidecar to tug 4 rod ends is stronger and transfer less stress to upper arms.But the Heims are easier to adjust toe and detach and attache car.DB
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Old 01-24-2015, 05:51 PM   #6
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No doubt that Claude's subframe is way stronger than the DMC.
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Old 01-24-2015, 07:32 PM   #7
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Originally Posted by Boxer Metal View Post
No doubt that Claude's subframe is way stronger than the "old model" DMC.
Fixed it. My pic above is from a 2007 build.

Mebbe somebody has a pic of the 1150 subframe that DMC currently sells? It should look pretty similar to this--this is the current DMC subframe for the 1100GS (upper mounts are separate parts--not part of the subframe)--

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Old 01-24-2015, 08:19 PM   #8
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A fiscal conservative way into 1150 based sidecaring, the sidecar and associated hardware may be easy to tweak straight, it's in Calif so's Boxer Metal he's got allot of metal working experience. It's been my experience it costs 8-9k $ plus the bike this would be a easy place to start.

http://www.ebay.com/itm/301492611025...%3AMEBIDX%3AIT


Sub frame visible and it's not tied to motorcycle rear sub frame !
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Old 01-24-2015, 08:20 PM   #9
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Quote:
Originally Posted by DRONE View Post
Fixed it. My pic above is from a 2007 build.

Mebbe somebody has a pic of the 1150 subframe that DMC currently sells? It should look pretty similar to this--this is the current DMC subframe for the 1100GS (upper mounts are separate parts--not part of the subframe)--

Sorry but that does not look very safe or strong.
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Old 01-24-2015, 10:08 PM   #10
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Sorry but that does not look very safe or strong.
You don't have to say sorry--just tell us why. Most of us don't know Dick about the good and bad of engineering these things. You do. You build 'em! What makes it unsafe and how could it be done better? Can it be retrofitted fairly easily to make it better, or is it unsalvageable?

Total disclosure, though, as I mentioned in Post 3, I rolled my fully loaded rig upside down into a ditch after beating the hell out of it for 25,000 miles, and the "old style" DMC subframe was undamaged and untweaked. The bike was totaled. For that matter, the sidecar was undamaged as well, except for the rear lower mounting point on the sidecar chassis that got bent about 1/2-inch ($200 repair). So, at least on my rig, that design was essentially bulletproof. But I always want to learn more about this stuff from the experts (one of the big benefits of AdvRider!)
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Old 01-24-2015, 10:36 PM   #11
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You don't have to say sorry--just tell us why. Most of us don't know Dick about the good and bad of engineering these things. You do. You build 'em! What makes it unsafe and how could it be done better? Can it be retrofitted fairly easily to make it better, or is it unsalvageable?

Total disclosure, though, as I mentioned in Post 3, I rolled my fully loaded rig upside down into a ditch after beating the hell out of it for 25,000 miles, and the "old style" DMC subframe was undamaged and untweaked. The bike was totaled. For that matter, the sidecar was undamaged as well, except for the rear lower mounting point on the sidecar chassis that got bent about 1/2-inch ($200 repair). So, at least on my rig, that design was essentially bulletproof. But I always want to learn more about this stuff from the experts (one of the big benefits of AdvRider!)
Only 3 attaching points and none of the distributing the load of a sidecar through the entire bike only at the bottom of the engine.
Look at how the European manufactures do it. They distribute the load through the centerstand mount, frame to engine mount and around the frame and swingarm pivots.

Secondly would be how the lower sidecar to subframe mounts. I do not understand it. Maybe Jay can chime in.
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Old 01-24-2015, 10:44 PM   #12
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very helpful, thank you everyone

thank you, if you can post other subframe that you think are good for the R1150GS Adventure pls share them with pictures.... thank again
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Old 01-24-2015, 11:29 PM   #13
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Originally Posted by doublemocha View Post
please share with me your experiences with DMC subframe for R1150GS Adventure. i am sorry if this has been covered i am a newbie, i am planning on putting a sidecar on my bike.... thanks much.
I can't seem to find a clear picture.

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Old 01-25-2015, 12:37 AM   #14
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That's a quality bit of work, Chris

Fab'ed a new A-arm to replace the now redundant original, AND tied it to the lower sub-frame. Utilising the connection between to two as an anchor for the top strut was a stroke of genius, and puts it where it belongs.

Very well thought out and engineered

I hope the owner appreciates the amount of thought that went into that.



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Old 01-25-2015, 06:30 AM   #15
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Wow I got out of being the critic ! Thanks Chris !

Drone your the luckiest inmate on this forum ! My Karma would never let me get away with your crash.
The DMC philosophy is pretty clear light and simple, Freedoms is overbuilt and ridged, maybe Chris has something in between.
.The first three pages ot Zippers thread show subframe contructionhttp://www.advrider.com/forums/showt...t=winter+build
More rigidity equals better handling ! The suspension is doing the work not the chassis flexing !
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