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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: bdogchicago on May 11, 2021, 10:56:44 AM
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I'm seeking to mount a 2x2 Cycles Moto Bicycle Carrier (Horizontal) or Moto Vert Rack to my K75S but to do so, I need a rear rack. Specifically a rack that mounts to the frame; e.g. not an OEM BMW rack. Additionally, the rack has to be capable of handling 40lbs (2x2 bike rack + my MTB). Does anyone know the weight limit of the Reynolds 240 or Krauser racks? I've reached out to Givi but from what I've found online, their weigh light is only 5-6kg. I've also reached out to Hepco & Becker and am waiting to hear back.
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I couldn't find weight capacity data published in the Reynolds catalog pages at Snowbum's site (https://bmwmotorcycletech.info/reynolds.htm) nor at Duane Ausherman's site. Motobrick member natalena built a bicycle rack for his Brick. Maybe he'll chime in.
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I'm pretty sure that a Reynolds 240 can hold 40 lbs. You may get a little side to side movement with that much weight on it though.
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I would not trust a Givi 180 or 181 because it mounts through the top of the tail cowl and 40 lbs might bust up the tail cowl.
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Thanks. I thought as much. I really need something that mounts to the frame hence the interest in the Reynolds, Krauser, Hepco, etc. Just got confirmation from Hepco that their limit is 6kg so it's out. The Reynolds may work as 40lbs is a worst case scenario. Additonally, the 2x2 Cycles racks also use a load strap to anchor the bike to the K75 frame thus relieving some of the pressure off of the rack. I've reached out to natalena as well to hear about their experiece/recommendations.
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I think somebody here has put a bike rack on their brick. I seem to recall a photo in the last year or so of a bicycle hanging on the back of a K100RS, but I wouldn't know how to find it.
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Fergawdsake (http://www.motobrick.com/index.php?topic=580.msg104829#msg104829)
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Fergawdsake (http://www.motobrick.com/index.php?topic=580.msg104829#msg104829)
Yeah, that's the one!
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That could be the prototype before he fully developed the defensive smoke flare array on his Reynolds rack.
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Although the pictured rack did survive the garage door compression test, it was not optimum for freeway speeds and curvy roads, ie Skyline Drive and MD backroads.
The current and best, solid iteration is with a Reynolds 240 rack, and a angle iron welded "U" to support the mid section of the bike tray. It works a treat, and eliminated the vibration issue at speed. I do add straps to the bars, and attach those to the pillian mount triangle open space ... once tightened down, it's only noticeable at some stoplights as you slow and the rear heavy and high weight may cause the front wheel to shimmy a bit. Irritating, but not scary in the least.
Best part is, the brick is 1000% safer on the streets, as cars notice the flying bike and many slow down to take cell phone pics. Have gotten lot's of "thumbs up" from caged beasts.
Good luck with your build, I used a standard tray, strap for rear wheel, fork mount QR, and front wheel clamps to a tuning fork that's bolted to the rack and can swivel to put pressure on the pedals to keep everything stable. Took the MTB ('Dale SV2000 carbon swingarm) to the Rosebud area, and didn't have any problems on the Beartooth Hwy curves ... and the 'Dale is a Sumo by today's weight standards!
Cheers!