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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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 Posted: Thu Apr 19, 2018 3:35 pm Post subject: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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Hi all.
I'm sure this has been discussed but searching here via title isn't showing anything.
P. 20.6 in Bentley does not show this part but it seems later model Vanagons have a bushing at that end of the cable sleeve.
On the early model year accelerator cable, has anyone added a bushing to the metal sleeve the cable runs through? (see yellow arrow below). Either way, maybe I'll take the edge off the hole ID while replacing the cable.
My throttle cable looks pretty worn out so I'll be replacing it very soon. It connects to a water cooled engine using a custom bracket I made. It's old work; the design could be better. (note the straps trying to keep the sleeve aligned  ). The cable is likely original with over 400K KM's on it so not sure if cable is showing normal wear and tear or if the sleeve has been misaligned to the cable causing the cable to rub at the edge at ID of sleeve.
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1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
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AZ Landshaper
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Joined: February 08, 2009
Posts: 1698
Location: The Old Pueblo
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| Posted: Fri Apr 20, 2018 5:35 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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I had placed a rubber end on the cable housing when I did the subaru conversion but the back and forth literally sawed thru the rubber and the cable caught up one day leaving me with a very high throttle and 5 mins of hunting to determine the cause. Im back to bare metal and a nice smooth acceleration and idle. Im interested to see what you come up w but think rubber is too soft for the cable saw action.
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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Fri Apr 20, 2018 11:11 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| AZ Landshaper wrote: |
| I had placed a rubber end on the cable housing when I did the subaru conversion but the back and forth literally sawed thru the rubber and the cable caught up one day leaving me with a very high throttle and 5 mins of hunting to determine the cause. Im back to bare metal and a nice smooth acceleration and idle. Im interested to see what you come up w but think rubber is too soft for the cable saw action. |
Right. Ya I'd considered a rubber grommet or something like that but good to get your input. Thanks. Saved me some time. A quick search of two local building/hardware stores shows Slidex Teflon skid things that might be thick enough to make a part out of. I'm thinking something with a groove to fit over the metal sleeve and obviously a hole in the middle. Maybe stack and epoxy two, make part, then epoxy to sleeve.
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1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
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MartinG
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Joined: March 30, 2005
Posts: 39
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| Posted: Fri Apr 20, 2018 11:30 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| I don't have a good answer for you but I would imagine the cable would saw through the teflon as well as the rubber. |
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Vanagon Nut
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Location: Sunshine Coast B.C.
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| Posted: Fri Apr 20, 2018 11:41 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| MartinG wrote: |
| I don't have a good answer for you but I would imagine the cable would saw through the teflon as well as the rubber. |
In my case, the real issue is cable alignment to the sleeve opening. Or rather, keeping the sleeve end from moving laterally. e.g. by replacing the starter motor, its possible I moved the cable which caused a misalignment at the sleeve end to cable. But then it appears VW changed the sleeve (improved it) by, in part, including a plastic or teflon bushing at end of sleeve. On my '81, [edit: the cable in question] I can't recall details of how the sleeve was set up from the factory but on my '88, I see those improvements.
Neil.
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1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Mon Apr 23, 2018 10:34 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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So I'm having trouble locating Teflon stock or a kitchen cutting board thick enough to make a bushing from.
Sorry for the OT content, but what type of plastic is a long handle spoon made from?
Plastic #5 category: polypropylene (PP) ?
Plastic #7 category?
Neil.
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1988 West DIY 50º ABA
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82westyrabbit
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Joined: March 02, 2015
Posts: 969
Location: Ma
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| Posted: Mon Apr 23, 2018 8:02 pm Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| You should be able to get that at aircraft spruce. I would also try a bicycle shop for a liner from a bicycle cable. |
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calo1956
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Posts: 700
Location: long Island new york
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| Posted: Mon Apr 23, 2018 8:25 pm Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| Maybe just replace the steel nipple fitting with a brass nipple available everywhere. It is softer than the steel cable, but won't get cut through like rubber or teflon. |
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Vanagon Nut
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Location: Sunshine Coast B.C.
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| Posted: Tue Apr 24, 2018 10:20 am Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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Thanks guys.
No matter what part or material is used, as far as I can see, it'll need a lengthwise slit cut in it to fit over the cable.
The part I "hacked together" from a piece of plastic spoon handle seems viable but it ended up being too thin at end that slips over the metal cable sleeve.
Somewhat OT, at the accelerator pedal linkage the barrel clamp that holds the cable to the linkage looks weird. Not a typical VW barrel clamp. I may have to revisit that part but new cable is installed.
Neil.
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1988 West DIY 50º ABA
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Vanagon Nut
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Joined: February 08, 2008
Posts: 10379
Location: Sunshine Coast B.C.
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| Posted: Wed Apr 25, 2018 4:39 pm Post subject: Re: Air Cooled Throttle Cable Sleeve; add bushing at engine end? |
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| Vanagon Nut wrote: |
No matter what part or material is used, as far as I can see, it'll need a lengthwise slit cut in it to fit over the cable.
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So this is a mock up showing what I meant in terms of installing a bushing. View shows cable where it exits bracket. That's a cap from a tube of glue:
But then I thought of something which seems pretty simple and eloquent which may keep cable centred on sleeve. Its a slightly drilled/filed out riv nut:
Here it is with cable tension set. The riv nut shoulder is about 3/8" long. It feels quite secure.
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1988 West DIY 50º ABA
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