Author Topic: cover knob needed  (Read 4116 times)

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Offline Hap

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cover knob needed
« on: July 17, 2016, 03:29:33 PM »
My side battery cover came off while riding and the knob is lost. I am trying to find a replacement. Does anyone know the length or part mumber or have an extra I could buy?  Does the other models have same knob?  My cover was real nice but now looks awful and needs painting. Also any suggestions on where to send it to make new again?
68 GTR 350
66 Sport 90

Online moonpup

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Re: cover knob needed
« Reply #1 on: July 17, 2016, 04:09:15 PM »
6831-9000 is the part number you'd be looking for. I probably have a used one if no one else comes forward or you decide you want a nos knob....
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline OldSwartout

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Re: cover knob needed
« Reply #2 on: July 17, 2016, 08:13:03 PM »
I feel your pain, I lost the side cover off mine a couple weeks ago. I didn't find it, but picked up one from e-bay, complete with knob. It'll need painting, but is usable as is.  I also lost my toolkit, which will be harder to replace.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline old smokey

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Re: cover knob needed
« Reply #3 on: July 17, 2016, 09:20:14 PM »
So it isn't just me that has happened to. Lost mine three times, only found it twice.
The third time was the night of the deer collision. I have a beater spare which will need to be included in the rebuild whenever that happens.
'67 350 GTR undergoing repairs with a '75 Yamaha TX500 front end

Offline Hap

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Re: cover knob needed
« Reply #4 on: July 18, 2016, 09:17:29 AM »
moonpup- please let me know if you can find the spare knob and how much you want for it. I don't care if it is used- I just want to screw my cover back on!
68 GTR 350
66 Sport 90

Online moonpup

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Re: cover knob needed
« Reply #5 on: July 18, 2016, 09:56:19 AM »
After checking every nook & cranny, I'm sorry to report back that I was unable to find any extra knobs.

You might want to give Gene (Mopar5426) a shout.... he might be able to help you out.
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline OldSwartout

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Re: cover knob needed
« Reply #6 on: July 18, 2016, 06:46:42 PM »
After checking every nook & cranny, I'm sorry to report back that I was unable to find any extra knobs.

You might want to give Gene (Mopar5426) a shout.... he might be able to help you out.

Richard may have some or I see used ones on E-bay occasionally if you don't have any luck with people on this forum.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline ziggy stardust

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Re: cover knob needed
« Reply #7 on: July 19, 2016, 04:52:14 AM »
If Richard should stock them they can't cost much.
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Offline BRT-GTR

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Re: cover knob needed
« Reply #8 on: July 19, 2016, 07:57:06 AM »
              Hi Hap,
                            To get you back on the road before finding the correct knob, try your local lawnmower or baby buggy store. Many of these are fitted with similar items.

     You want one with a 6mm thread, 25mm long with 10mm of thread, might have to adapt it a bit  There should be a rubber bung/spacer (6833-9000) on the the inside of the cover, which stops the knob going AWOL and gives you something to tighten against. Easily made from a plastic wine bottle cork. Anyone tell us the correct length of that spacer ?? Mine are non-original.
   
 Cheapskate I know but the mother of invention  etc  ;D ;D and you get to drink the wine 8)     Brian.
« Last Edit: July 19, 2016, 08:03:22 AM by BRT-GTR »
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Offline davis

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Re: cover knob needed
« Reply #9 on: July 19, 2016, 05:18:31 PM »
Google "plastic knobs". There are a ton of them out there, with and without metric studs. If the best you can find has a threaded hole, Super Glue one end of a long enough, correct size bolt, run it in and when it dries cut and chamfer to the correct length. Share your success.

What's with the covers falling off?? Love to have that happened to a finely finished side cover! Another point of failure from engine vibration I guess. I am now replacing the old, hard rubber spacer with a softer durometer one if it can be found. It will pull in further, and act like a spring washer and damper against vibration.

Offline OldSwartout

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Re: cover knob needed
« Reply #10 on: July 20, 2016, 08:31:14 AM »
I'm pretty sure my cover loss was good old-fashioned carelessness.  I checked the battery/charging system a couple weeks earlier and was planning on doing some more checking, so didn't fasten the cover down.  Then I forgot and hopped on and went for a ride. ::) The 48 year old rubber spacer was pretty hard, though.

I think a piece of rubber gas line would probably be a reasonable replacement.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline Hap

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Re: cover knob needed
« Reply #11 on: October 03, 2016, 03:26:44 PM »
I found a new knob on ebay but I dont have any rubber spacer and not really sure where it goes? Anyone have a picture?
68 GTR 350
66 Sport 90

Offline OldSwartout

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Re: cover knob needed
« Reply #12 on: October 03, 2016, 08:43:23 PM »
Here's the inside of my sidecover.  The rubber piece is about 5/8 inch long and is a spacer and tensioner (kind of like a rubber lockwasher) to keep the knob from vibrating loose.  A piece of 3/16 or 1/4 inch fuel line would probably work, or check to see if Richard has any left.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline BRT-GTR

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Re: cover knob needed
« Reply #13 on: October 04, 2016, 05:48:59 AM »
         Just picked up an NOS rubber stopper. It's 18mm long, 15mm diameter with a 5mm hole for a good tight fit on the cover knob shaft. Thick wall fuel tube should work fine. Cover should also have a small rubber button (3452-3210) on the bracket at the front, approx 8mm thick. Should also be a wedge shaped rubber pad on the frame hanger bracket. These all help to stop the cover vibrating and reduce noise.
    Brian.
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Online moonpup

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Re: cover knob needed
« Reply #14 on: October 04, 2016, 08:38:27 AM »
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline Hap

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Re: cover knob needed
« Reply #15 on: October 04, 2016, 09:48:22 AM »
Got it! Thanks- pictures tell the story!
68 GTR 350
66 Sport 90

 


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