WTB: Crash Bar Breakaway Bolts - 46712303070 / 46718554872

[TimTyler]

Noticed that one of my crash bar breakaway bolts that connect to the oil pan is broken. I'm sure it happened during a 2mph slipover in some snow last week.

New part 46718554872 (replaces old #46712303070) from dealer is $36 each! Grrrrrr.  I just found and ordered one from ebay for 2/3 that, but wouldn't hurt to have another one standing by.

[kioolt]

You might be able to replace it with one of these from McMaster Carr.

http://www.mcmaster.com/#vibration-damping-sandwich-mounts/=125mvii

[TimTyler]

Thanks for that tip!

Only two old German BMW engineers know the proper load and shear values though, so I'd be worried about getting it wrong.

[Elipten]

Those thing are weak and shear with little effort.  Amazing how other bikes have rigid mounted bars.  I vote for rigid.  Screw the bar and save my leg if and when I ever need it.


2014 CB1100 DLX
2013 CB1100 Std
1990 BMW K75 RT

[TimTyler]

I think the rubber mount is there to protect the oil pan cover. If the mount wasn't able to shear, it might crack the oil pan.

I rode for 1000 miles before I noticed the rubber mount had been compromised. The rest of the protection bars seemed fine, but I noticed a rattle sound and slight play in the protection bars when inspecting the bike in the driveway.

[The Mighty Gryphon]

It kind of puzzles me.  WTF good is a "protection" bar that is designed to break off when the bike crashes, or even just falls over? 

I don;t want to believe it, but I am pretty sure the only reason for their existance is to increase the dealer income after a bike drop by a couple hundred dollars. 

I had my RT fall off the center stand in the garage.  Broke the right bar off which then tore a big chunk out of the fairing, damage that wouldn;t have occurred if the bike didn;t have that bar.

[TimTyler]

Well, a new oil pan is about $200, considerably more expensive than a $36 bolt.

My crash bars were made for the police bike which I assume might be dropped from time to time in order to catch bad guys without taking the time to set the sidestand.

Plus they give me a place to mount the riding lights and horns. :)

[Bill]

Haven't seen 'police crash bars' before.  Are they mounted the same way as the 'tip over bars' or do they pick hard mounts on the frame ?  Pictures would help those of us who can fabricate.

[TimTyler]

Older photos of mine here: http://www.motobrick.com/index.php/topic,7241.msg50060.html#msg50060

[Elipten]

Other than mounting lights which is a good use, they are of limited value compared to other brands of motorcycles.


2014 CB1100 DLX
2013 CB1100 Std
1990 BMW K75 RT

[Bill]

It seems to me that they would spread the impact load across more points of attachment  taking more load before breaking the rubber mounts.  The extra light mounting points is a bonus

[The Mighty Gryphon]

I hope there aren;t too many people reading this thread.  I plan on unloading mine.

[Bill]

I hope there aren;t too many people reading this thread.  I plan on unloading mine.

Unloading bars or bolts or both ?  I have an old pair and a new pair but not a complete set of mounting bolts between them  :sip: :sip:

[The Mighty Gryphon]

Thinking of unloading it all together.  Might make it easier to sell.  What do you need?  Might be able to bring it up when we get together in May.

[bocutter Ed]

I plan on unloading mine.

From a 75, or 100 ... or are they the same?

[The Mighty Gryphon]

K75RT in chrome.  All mounting hardware with the exception of the right side lower mount.