Clutch Basket Rivets (2010)

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I'm putting my '74 850 Commando back together and am in the process of assembling the clutch. There are 3 rivets (one of mine is missing) that run through the the back of the clutch basket and appear to hold a backing plate in place. The two rivets still in my clutch basket are so loose that the backing plate drops out of the basket when it's inverted. Is that plate supposed to be attached to the clutch basket so that it doesn't come off? There's a previous thread on the forum that discusses this issue and it appears that the main function of the rivets is to properly position the backing plate in the clutch basket. It isn't clear if the plate is loosely riveted to the basket or just there to index the backing plate and not necessarily attach it to the basket. Additionally, there doesn't seem to be a part number for those rivets in the parts list, am I missing that? If there isn't a part number, what are people using for those rivets? Any light any of you can shed on this question will be appreciated.

Thanks,

Jim
 
Jim Malm said:
there doesn't seem to be a part number for those rivets in the parts list, am I missing that? If there isn't a part number, what are people using for those rivets? Any light any of you can shed on this question will be appreciated.

The backing plate and rivets all come as part of the clutch drum, and the rivets (or plate) are not available separately as far as I am aware, [Edit: Since 2010 these parts have become available separately] but I'm sure some of our members will know of a way to repair it.
 
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These are regular rivets and that plate should be tight.
I believe you need to go to your hardware store and find the right size rivets and trim, grind or cut if needed so that the rivet will be resessed below the plate.
Be sure it is "backed" from behind and manually peen this rivet till solid with a centering punch and finish with a flat faced drift the same size as the hole in the plate. If it sticks out the back a little, cause what you will find is the rounded head type of rivets, it may be needed to grind slightly around the edge so it sit well into the back Do not worry about it being resessed in back when you are done, just grind or file close to flush.
Here is a couple of picks to guide you.
Clutch Basket Rivets (2010)

Clutch Basket Rivets (2010)
 
Thanks for the info and photos, that's exactly what I needed to know! Your assistance is greatly appreciated.

Jim
 
Make darn sure those surfaces are clean before sandwiching them together. Let us know how it works out.
 
I amazingly found some rivets that worked at a small neighborhood hardware store - NAPA and Ace didn't have anything close. The repair has been completed and I'll post a report when the project is completed and running.

Jim
 
If you you are looking for the authentic Norton clutch basket rivet, I just discovered that Old Britts stocks them. They are listed as Part Number 062485 and are the last item listed in the Group 10 list posted for the '74 Commando on the OB website. They sell for 77 cents a rivet.
 
These are regular rivets and that plate should be tight.
I believe you need to go to your hardware store and find the right size rivets and trim, grind or cut if needed so that the rivet will be resessed below the plate.
Be sure it is "backed" from behind and manually peen this rivet till solid with a centering punch and finish with a flat faced drift the same size as the hole in the plate. If it sticks out the back a little, cause what you will find is the rounded head type of rivets, it may be needed to grind slightly around the edge so it sit well into the back Do not worry about it being resessed in back when you are done, just grind or file close to flush.
Here is a couple of picks to guide you.
Clutch Basket Rivets (2010)

Clutch Basket Rivets (2010)
What happen with the pictures ? I can not see them .
 
Jim Malm and pete.v
Just doing up a mint spare clutch basket with an unattached backing plate but mine doesn,t have the three rivet holes drilled.
It does have two small 1/16" holes to line up the backing plate correctly however (same as my good Mk3 clutch basket) and I,ll use these when drilling the three rivet holes as per pete,v advice.
There are nine rivets are still available at Old Brits but 96 cents each now, tried to order but they no longer post to the country of our bikes birth...
I,ll get some local equivalents.
 
Jim Malm and pete.v
Just doing up a mint spare clutch basket with an unattached backing plate but mine doesn,t have the three rivet holes drilled.
It does have two small 1/16" holes to line up the backing plate correctly however (same as my good Mk3 clutch basket) and I,ll use these when drilling the three rivet holes as per pete,v advice.
There are nine rivets are still available at Old Brits but 96 cents each now, tried to order but they no longer post to the country of our bikes birth...
I,ll get some local equivalents.
Hi, if you log onto RGM look under commando cluth parts, they have these rivets in stock 06.2485 40 p each.

Hope this helps.

John.
 
TD54
thanks for the reply, all ordered. According to their info the two small pins on mine were all that was used on early models, until they found out how useless they were.
Cheers
 
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I also had the two small locating dowels and no rivets. I found some small flat head machine screws, drilled and countersunk the plate, loctited and staked the nuts on back and called it good. Been 4 or 5 years and no troubles. It does take a carbide to drill through.
 
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