I have a Dunlop wm3 40 spoke that has the 11/32 (10 Ga ? ) holes. I bought it to use on the rear to get a fatter tire look and when my spokes arrived they are the smaller gauge for the front 19" type. Can anyone tell me if the larger spokes will work with my original drum that had a 19" rim? It was called a triumph /norton wm3 when I bought it . Will the drum have to be drilled for the heavier spokes or are they made to hold either type?
Help! wheels and spokes dilema
- Thread starter seaguy
- Start date
- Status
- Joined
- May 7, 2005
- Messages
- 7,067
If you go to Bucananas site they have lots of detail on the orginal nipple and spoke sizes. On a rear I would be doing for the thicker spokes if original as they take a beating made worse by carrying passengers and/or early wheels without shock absorbers.
- Joined
- Nov 20, 2004
- Messages
- 20,327
seaguy said:
The fact that you have bought a "Dunlop Triumph/Norton WM3" rim is of some concern...
As the holes in any particular rim are punched out at a precise position in the dimples to match the hub it will be laced to, with regard to the hub diameter, hub width, rim offset and spoke pattern, as it isn't just a case of lacing any rim to any hub? Does this Dunlop rim have any identification markings on it, such as a part number and/or "MC???" number?
- Joined
- Nov 20, 2004
- Messages
- 20,327
seaguy said:
10 SWG* gauge spokes could have nipple diameters of: .225", .250", .275", .300"
11/32 is .34375" however I'm not sure either Norton or Triumph used nipples larger than .300"
The original front and rear drum brake spokes were swaged 8/10 gauge (8 gauge at the hub end,) 8 gauge SWG is 0.160", and 10 gauge SWG is 0.128"
*(SWG = British, and AWG = US wire gauge sizes are not the same)
http://www.csgnetwork.com/wireconversiontable.html
Whats on the wheel is: Trade Dunlop Marm (mark?)...MB10...W1007...WM3-18 the splke holes are 11/32" and Mic to .3135 40 holes. The parts guy sent me the spoke set that says Atlas/Commando, Fr. & Re. Drum 18" . Maybe it would be a better Idea to talk with Buchanan and tell them the wheel info . I was wondering if they make thicker nipples with with the same thread for the front size spoke. Wheel came from Commando Specialties and was called a Triumph/Norton. Didn't notice that the holes were larger when ordering. Murphy's Law. Never Fails. My closest Norton parts place is 400 mi away so I have to use the web.
- Joined
- Nov 20, 2004
- Messages
- 20,327
seaguy said:
If it is as you say an original Dunlop rim, "W1007" (later 37-1007) is the part number for a '63-'70 Triumph unit twin WM3 rear wheel rim, the hubs of which, I think, were smaller diameter than the Commando hubs, so I wouldn't think that particular rim is going to be a suitable choice? It may work, but I really don't know?
I think you really do need to talk to Buchanan's before you go any further?
grandpaul
VIP MEMBER
- Joined
- Jan 15, 2008
- Messages
- 13,525
"A man's got to know his limitations" (Clint Eastwood as "Dirty Harry")
I just pick up the phone and talk to Kenny or Angel at Buchanan's, send them the pair of hubs I'll be using, and very soon afterwards I recieve the nicest packing boxes in the business, with shiny, perfectly laced and balanced wheels, ready to mount tires on and pop in place.
False economy to even re-chrome used rims any more, unless they are original Dunlops in good condition, for a total restoration.
I just pick up the phone and talk to Kenny or Angel at Buchanan's, send them the pair of hubs I'll be using, and very soon afterwards I recieve the nicest packing boxes in the business, with shiny, perfectly laced and balanced wheels, ready to mount tires on and pop in place.
False economy to even re-chrome used rims any more, unless they are original Dunlops in good condition, for a total restoration.
L.A.B. said:
You are correct L.A.B. it is a triumph rim. It will only work with 4.5" spokes and .300 nipples using a standard spoke lace. The parts guys say I need a 06-7838 atlas rim to match the goofy norton lace pattern. Wonder who botched that? Half of the
spoke heads are improperly supported by being installed backwards in the drum. Never noticed that till I started on the wheels.
- Joined
- Nov 20, 2004
- Messages
- 20,327
seaguy said:
That rim is still listed by Andover Norton: http://www.nortonmotors.de/ANIL/Norton% ... mit=Search
- although I doubt it will be a genuine Dunlop rim, and I expect Buchanans would also be able to supply you with the correct style rim.
I lace my own wheels up, just for the fun of it. I balance my own wheels after the tyres have been fitted too.
(I don't recommend it, Grandpaul is right, let the pro's do it).
But I get my rims and spokes new from either Hagon or Central wheel.
You need to get the ANGLE of the drillings correct to match your hub. The drilling size is for bigger nipples which may have 'butted spokes'. The spoke diameter is fixed, by the holes in your hub...yes?
Second hand rims nearly always dissapoint.
The other thing you need to decide is the size of tyre you wish to run with.
100/19/90 was standard, front and rear, on a WM2 rim.
I run a 110/18/80 on the rear, which should (and is) fitted to a WM3 rim. I run with a 19" WM2 on the front.
The fattest tyre you can get in (I believe) is a 120 wide. This should be fitted to a WM4 or even a WM4.5 rim.
If you put a 120 wide tyre on your WM2 standard rim your bike ride like a python swimming across a river.
Tyre sizes....
120/18/80 means 120mm wide, 18" diameter rim size, the depth is 80% of the width. Avon web site shows actual diameters of their tyres on a chart.
(I don't recommend it, Grandpaul is right, let the pro's do it).
But I get my rims and spokes new from either Hagon or Central wheel.
You need to get the ANGLE of the drillings correct to match your hub. The drilling size is for bigger nipples which may have 'butted spokes'. The spoke diameter is fixed, by the holes in your hub...yes?
Second hand rims nearly always dissapoint.
The other thing you need to decide is the size of tyre you wish to run with.
100/19/90 was standard, front and rear, on a WM2 rim.
I run a 110/18/80 on the rear, which should (and is) fitted to a WM3 rim. I run with a 19" WM2 on the front.
The fattest tyre you can get in (I believe) is a 120 wide. This should be fitted to a WM4 or even a WM4.5 rim.
If you put a 120 wide tyre on your WM2 standard rim your bike ride like a python swimming across a river.
Tyre sizes....
120/18/80 means 120mm wide, 18" diameter rim size, the depth is 80% of the width. Avon web site shows actual diameters of their tyres on a chart.
- Status
Similar threads
- Locked
