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Old 04-06-2014, 06:10 PM   #16
Andrew
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Quote:
Originally Posted by bemiiten View Post
The cable pulleys are made of steel on the 1150.


That was a good design, I've only had to clear crud out of them once or twice.
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Old 04-06-2014, 06:16 PM   #17
kbroderick
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Quote:
Originally Posted by Andrew View Post


That was a good design, I've only had to clear crud out of them once or twice.
They do fall off the shaft eventually, though, with potentially unpleasant results. Mine failed while riding a gravel road on the way back from a week-long vacation, resulting in the bike acting as if I had opened throttle to 100% (at least on that cylinder). I didn't manage to get the bike running on the other cylinder (or to get the pulley reattached, even temporarily) and had to resort to towing the bike.

With that said, there's somebody in Vendors who does 1150 throttle-body rebuild kits, even though the TBs aren't designed to be serviceable. Maybe he might be able to help?
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Old 04-06-2014, 06:44 PM   #18
Cataract2
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Wow, I have never seen something like this before.

Curious, is that piece made of metal or plastic? I can't tell from the picture. To me it looks like plastic.
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Old 04-06-2014, 08:10 PM   #19
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Originally Posted by Cataract2 View Post
Wow, I have never seen something like this before.

Curious, is that piece made of metal or plastic? I can't tell from the picture. To me it looks like plastic.
It is plastic.
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Old 04-06-2014, 10:36 PM   #20
Beecher Snipes
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Check with Bing Carburetors, I bet they can help you. They do throttle body rebuilds and parts.
http://bingcarburetor.com/bmw/bmw.html
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Old 04-07-2014, 01:24 AM   #21
diabolik37
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Originally Posted by BKFoster View Post
I didn't see him actually break them but it was fine earlier in the day when I rode it. They are inboard of the TBs so he couldn't have kicked them. I have 65,000 miles on the bike and have never had an issue with them before.

Yeah, I think he broke them. I won't mention to his dad because his dad didn't want him to sit on the bike but I said it was okay. I might tell the boy about the perils of forcing anything mechanical but I'm not going to make a big deal of it. I learned a lesson.
While I symphathise with your trouble, I think you really should said something to the 13 Years old kid. I think what he did it is a total lack of respect. You allowed him to sit on your bike. No one told him to play with it. You can help him learn the difference between the two...(with some form of punishment)...
I would recommend a fatal beating... But you may be inclined for a different punishment...
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Old 04-07-2014, 04:24 AM   #22
L21
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You should thank the kid, it was most likely on its way out already and he saved you a long walk home. I think its unlikely the kid twisting the throttle to its stops would brake it with out some sort of hairline crack or defect in the plastic. But that's just my opinion.
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Old 04-07-2014, 04:34 AM   #23
trout'r
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repair option

could try some plast-aid. saw a write-up in recent mcn. i immediately ordered some for a broken plastic part. check out their website for info.
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Old 04-07-2014, 04:37 AM   #24
billdonna
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Quote:
Originally Posted by BKFoster View Post
It is plastic.
All is not lost. Here's my solution.

1. Clean all crud off plastic and steel arm

2. Epoxy the plastic back onto the steel as best you can.

3. Get a stainless steel washer approximately the outer diameter of the black plastic. Drill eight 1/16" diameter holes in the washer and epoxy it onto the face of the plastic.

4. Gently drill thru the eight holes in the washer thru the plastic, steel arm and plastic on the backside and epoxy 1/16" dia pins in the holes.



Not the most elegant solution, but the pins will hold the torque to the steel lever, not the broken plastic.
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Old 04-07-2014, 05:32 AM   #25
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Originally Posted by L21 View Post
You should thank the kid, it was most likely on its way out already and he saved you a long walk home. I think its unlikely the kid twisting the throttle to its stops would brake it with out some sort of hairline crack or defect in the plastic. But that's just my opinion.
Yeah I have been thinking the same. I just don't see how he could put so much force into the throttle to break both of these so cleanly.

I haven't removed the second TB yet but I see this crack in the plastic and I wonder if they were on the way out anyway.

If these had been cracked for some time wouldn't there be dirt /grime in the cracks?

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Old 04-07-2014, 05:36 AM   #26
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Originally Posted by L21 View Post
You should thank the kid, it was most likely on its way out already and he saved you a long walk home. I think its unlikely the kid twisting the throttle to its stops would brake it with out some sort of hairline crack or defect in the plastic. But that's just my opinion.
Yep...

Pure lurker here - but this thread has my attention.
To find something this vulnerable now - is simply priceless. I'd rather find out this way rather than walking out 20+ miles or more. Trust me that would be a short walk.
BillDonna - like your solution, going to think about that one.
Now to look at my bike... And check things...


Sent from my Samsung Note 3
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Old 04-07-2014, 05:41 AM   #27
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Originally Posted by billdonna View Post
Not the most elegant solution, but the pins will hold the torque to the steel lever, not the broken plastic.
I don't know. . . .seems pretty elegant in a Rube Goldberg kinda way. I am sure my lack of machining skill would have me drilling completely through the TB though.
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Old 04-07-2014, 05:50 AM   #28
BKFoster OP
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Originally Posted by WindSailor View Post
Yep...

Pure lurker here - but this thread has my attention.
To find something this vulnerable now - is simply priceless. I'd rather find out this way rather than walking out 20+ miles or more. Trust me that would be a short walk.
BillDonna - like your solution, going to think about that one.
Now to look at my bike... And check things...


Sent from my Samsung Note 3
I doubt this is worthy of adding a new worry bead. I haven't heard or seen of this happening to anyone else. I seem to be a pioneer in finding new ways to jack things up.

I also don't see how you would be able to examine these plastic parts without removing the TBs. They are pretty well hidden.
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Old 04-07-2014, 05:54 AM   #29
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Originally Posted by Beecher Snipes View Post
Check with Bing Carburetors, I bet they can help you. They do throttle body rebuilds and parts.
http://bingcarburetor.com/bmw/bmw.html
I would do this first
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Old 04-07-2014, 07:46 AM   #30
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I would do this first
I just got off the phone with Bing in KS. They don't know anything about the Bing 77 / 47 /101 & 102 throttle bodies. He said they only have parts for the 75 series and back. My parts are too new. He said he would have to call the Fatherland to see what would be an appropriate parts list. I never even got to tell him what I needed.

I thanked him for his time.
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