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Not 37-1007 Rear Rim but close - Help with ID #797858 02/08/20 3:27 pm
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Walt Offline OP
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I ordered new chrome rims for my '67 TR6R. After struggling to get the timing side spokes laced up, I discovered that the timing side holes are not at the correct angle for my bike. I spent about 3 hours trying to lace it up, thinking that I was making some bone-headed, rookie error. I laid it next to the original, and there it was, plain as day. The nipple holes on the timing side are clearly at different angles, which explained why I struggled to identify the drive side in the beginning of the procedure as I followed the John Healy article. All of the other dimensions are, or appear to be, correct for a 37-1007 rim. The CWC rims has some numbers hand engraved/etched into the outside where the tube goes, but I can't make any correlation to a Triumph part number. I can find no other identifying marks on the rim.

I've emailed the vendor to remedy the situation, but no response yet.

Can anyone shed some light on this? I'd like to figure out what model or part number this rim is, and what models of bike it would fit as I might have to sell it.

BTW, the front wheel laced up fine.

Thanks,

Walt

Last edited by Walt; 02/08/20 4:48 pm.

Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
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Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797865 02/08/20 4:12 pm
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John Healy Online Content
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Okay Walt, for some unknown reason the 37-1007 rear Triumph rim seems to cause a lot of people problems.

To identify a Central Wheel rim you look at the bead surface where the tire sits on the rim. It will have inscribed with an electric pencil who it was made for and an identity in either the original motorcycle manufacturers part number. In this case 37-1007. Or their generic numbering system which in the case of a 37-1007 will be for a British Chrome steel rim will be RD 33 01 14.

So one of 37-1007 rims will read Coventry Spares with either 37-1007 or RD 33 01 14. So lets start there.


Re: Not 37-1007 Rear Rim but close - Help with ID [Re: John Healy] #797870 02/08/20 4:44 pm
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Walt Offline OP
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Thanks John.

The rim is engraved 33 01 (06 or 04) hard to tell. Definitely not 33 01 14.


Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797871 02/08/20 4:55 pm
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Walt Offline OP
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FWIW. I also noticed that the rim has no rim lock holes. Perhaps another clue as to what this rim is.


Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797873 02/08/20 5:31 pm
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Jon W. Whitley Online Content
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Originally Posted by Walt


The rim is engraved 33 01 (06 or 04) hard to tell. Definitely not 33 01 14.




Looks like you most likely have the rim for the QD hub.

https://www.central-wheel.co.uk/18-...00r-t100c-t100t-6t-daytona-t120-tr6.html


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project
1971 BSA A65 650 - Project
1972 Norton Commando 750 "Combat"

Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797874 02/08/20 5:39 pm
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John Healy Online Content
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Okay Walt: looking deeper into this all of our back-up stock of 37-1007 rims are labeled to fit your bike, but with 33 01 04.

These rims are dimpled, and pierced, the same as the 33 01 14 that are on the rim rack. I have no idea the difference between the 04 and 14.

This rim is handed and the spokes will only line up if the rim is right way around. Have you looked at the information I put on www.vintagebikemagazine.com technical tips on lacing this wheel?

CW rims do not come pre-drilled for rim locks.


Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797876 02/08/20 5:59 pm
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kommando Offline
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Direct link to the JH article on lacing that wheel, worked for me when I did mine.

http://vintagebikemagazine.com/tech...-and-650-to-1970-rear-wheel-rim-37-1007/

Re: Not 37-1007 Rear Rim but close - Help with ID [Re: John Healy] #797878 02/08/20 6:23 pm
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Walt Offline OP
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I have read through the VBM tech tips several times. I was able to use that article to lace up the original wheel with the new spokes on the first try. It is well written. The key is to identify the drive side of the wheel. I was able to do that easily on the original Dunlop wheel. The distance between nipples was enough to make it easy to identify. The original rim has the following markings, WM3-18, W1007, & MB10. However, when I started to use the same article to lace the new wheel, I had difficulty ident\ifying the drive side using the same method. In other words, there was no significant difference in the distance between the nipples. I went cross-eyed trying to see a difference on the ruler. I finally decided that one side was a hair longer than the other and started from there. The problem started when I would get the drive side laced, and start on the timing side. I couldn't get anything to match up, despite many attempts. It was then that I laid the rims side by side and noticed that it is very easy to see that the nipple holes on the rims are at different angles. The dimples look the same, but they are pierced differently. The space between the piercing and the edge of the dimple is greater on the new rim than the original. I should have caught it when I started, but I just assumed that I had been shipped the correct rim.

Are you absolutely certain that the 33 01 04 and 33 01 14 rims are dimpled and pierced exactly the same? I understand the handed wheel concept, and have successfully followed your procedure to lace the front wheel and a rear wheel.

Additionally, the factory parts manual list 2 different rear wheels as follows:

W1471 Rear wheel rim WM2-18 1 TR6 & T120
W1007 Rear wheel rim WM3-18 1 U.S.A. TR6 & T120

As my original Dunlop rim is marked WM3-18 and W1007, I assumed that the correct replacement rim should be W1007 or 37-1007, and placed my order accordingly.

Should the 1471 be dimpled and pierced differently that the 1007?

Are the rims locks necessary?

Last edited by Walt; 02/08/20 6:26 pm.

Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: kommando] #797879 02/08/20 6:33 pm
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Walt Offline OP
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Originally Posted by kommando
Direct link to the JH article on lacing that wheel, worked for me when I did mine.

http://vintagebikemagazine.com/tech...-and-650-to-1970-rear-wheel-rim-37-1007/


Thanks. I have read that article several times, and used it to successfully lace a rear wheel using the original Dunlop rim.

On the original rim, I measured the distance between the nipples on one side then the other and the difference was approximately 3/16". When making the same measurement on the new rim, there is only approximately 1/16".

I will attempt to post a picture that may help illustrate the difference.

Thanks


Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797880 02/08/20 6:49 pm
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Walt Offline OP
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The difference between the piercings is small. I've attached the photos.

Attached Files image1.JPGimage2.JPGimage3.JPG

Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797884 02/08/20 7:38 pm
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John Healy Online Content
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No picture needed! First who's name is inscribed on the rim adjacent to the 33 01 04? If you do not want to share this here you can private email me at johntioc at aol.com

Or who did you buy it from?

Of the 37 each of 37-1007 rims we have in stock 25 of them are of the 33 01 04 variety. They are in back-up stock.

I unwrapped one of the 33 01 04's and put nipples in the dimples and sighted the angles by eye AND YOU ARE CORRECT. That 04 will not lace to a Triumph rear hub. I will have to lace one up to be sure before I contact CW. In the meantime I have good 14's on the that I can supply to the dealer you got the 04 from.

Thank you for posting this


Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #797910 02/08/20 11:25 pm
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Walt Offline OP
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I sent you an email, John.


Walt

1967 Triumph TR6R
2002 Aprilia Futura
2018 Royal Enfield Himalayan
Re: Not 37-1007 Rear Rim but close - Help with ID [Re: Walt] #798115 02/11/20 5:18 pm
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John Healy Online Content
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Walt took one of the 33 01 04 rims and laced it to a hub. Didn't see a problem. I talked to Mike this AM. Send me your hub, spokes set (with nipples) and rim to me and I will try to lace it.

email me and I will give you an address.

John



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