Alloy Rims

Classic Norton Commando Motorcycles.

Alloy Rims

Postby Stephen Hill » Sat Mar 20, 2010 11:27 pm

I have come across two alloy rims that look a lot like Akronts. They are 19 inch, 40 spoke holes, and are stamped 250C/19/42998/74
I found a reference on the web that says that they are "factory HD sporty drop center"
Anybody know if these can be laced up on a Norton Commando? Any ideas on a tire size? Will the rims and tires fit between the swing arms and forks???

Stephen Hill
1968 Fastback
1969 Mercury
1971 Roadster
1973 Interstate

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Re: Alloy Rims

Postby swooshdave » Sat Mar 20, 2010 11:58 pm

Stephen Hill wrote:I have come across two alloy rims that look a lot like Akronts. They are 19 inch, 40 spoke holes, and are stamped 250C/19/42998/74
I found a reference on the web that says that they are "factory HD sporty drop center"
Anybody know if these can be laced up on a Norton Commando? Any ideas on a tire size? Will the rims and tires fit between the swing arms and forks???

Stephen Hill
1968 Fastback
1969 Mercury
1971 Roadster
1973 Interstate


I was always told that the hole angle is important. So even if it's the right diameter and number of holes it can still be wrong.

If they are in your possession then you can probably sell them for enough to afford new Norton rims.
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Re: Alloy Rims

Postby Danno » Sun Mar 21, 2010 12:42 am

Harley Sportsters came from the factory with shouldered alloy rims back in the late 60's or early 70's. I think they were Akront rims. Hole angle could be an issue, especially if you plan to lace them to disc brake . For drums, you just might be able to make them work with the proper length spokes. How wide are they?

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Re: Alloy Rims

Postby Foxy » Sun Mar 21, 2010 3:45 am

Gday Stephen, as Swoosh and Dannao have already pointed out, the angles will more than likely be wrong as they are drilled to suit the Harley hub. Also something to take into consideration is the lacing up and overlap of the spokes. Some rims have only a two spoke cross over where as three looks much nicer. This is they way I will have my Grimecca hub done and will have a sharper angle on the rim spoke holes. Hopefully I havent confused you?
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Re: Alloy Rims

Postby chillemike » Sun Mar 21, 2010 9:05 am

my name is mike or "chille" as my friend calls me.. i just became a member today, howdy fellas !!.. i have had a 850 for 10 years.. i also found some sporty rims and woundered if they would lace up.. it is my understanding there ar some variations of lacing styles some are stronger than others.. is there a posibility that one of those different styles would work? currently a i have an old front rim and am going to experiment.. but its allways better if to see if its allready been tried and had any sucess.. my buddy has a set of borranis with norton hubs and the rear one looks like it is eather laced wrong or has the wrong size spokes because they are bowed out?? just a little off, its strange.. if anybody has anymore ideas that would be great! i also dont have the money for the correct ones and i like to keep it REAL LOOSE..

thanks.... sorry for the grammar.. im just a biker..

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Re: Alloy Rims

Postby DogT » Sun Mar 21, 2010 9:25 am

If the spokes are bowed out, it may be from the spoke heads not fitting correctly where they go into the hub so they fit straight (correctly). I had that problem when I got some new SS spokes, the front went together fine but the rear, I had to bend the heads at a sharper angle to keep the spokes from "bowing" out when assembled. didn't take much.

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Re: Alloy Rims

Postby chillemike » Sun Mar 21, 2010 10:45 am

Lets put it like this, has anybody done it? harley alluminum to norton? Also i got a ninteen and eighteen, thinking two ninteens would de easyer?


thanks chille..

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Re: Alloy Rims

Postby swooshdave » Sun Mar 21, 2010 10:54 am

chillemike wrote:Lets put it like this, has anybody done it? harley alluminum to norton? Also i got a ninteen and eighteen, thinking two ninteens would de easyer?


thanks chille..


Let's put it this way, not recommended. Does that help? :mrgreen:
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Re: Alloy Rims

Postby chillemike » Sun Mar 21, 2010 10:59 am

indeed thanks..

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Re: Alloy Rims

Postby Stephen Hill » Sun Mar 21, 2010 12:44 pm

The rims are 2.5 wide. I think that is what the 25 in the part number refers to. Would that be too wide for a Commando?

What I am hearing so far is that there could be issues with lacing pattern and the angle of the holes in the rim. Good cautions, but it would be interesting to hear from someone who has tried it.

Stephen

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Re: Alloy Rims

Postby Danno » Sun Mar 21, 2010 1:26 pm

Stephen Hill wrote:The rims are 2.5 wide. I think that is what the 25 in the part number refers to. Would that be too wide for a Commando?

What I am hearing so far is that there could be issues with lacing pattern and the angle of the holes in the rim. Good cautions, but it would be interesting to hear from someone who has tried it.

Stephen


2 1/2" is standard rim width for a 19" Britbike wheel. You can fit up to a 4.10x19 tire. I have one on the front and an 18"x3" on the rear where I think up to a 4.50x18 tire will fit if it clears the chain. Comparing these rims to some stock steel rims would be the quickest way to check if the hole angles are similar. What was posted earlier about a 3-spoke cross pattern can not apply to a 40-hole rim and hub, so the angle of the holes in the rim should be the only thing preventing you from lacing them up to Norton hubs. Both of mine (and the previous 19" alloy) were drilled for a 750 Commando with drum brakes and I was able to make them work on the disc brake hubs. I talked Carl Donelson into cutting and rethreading the stock rear Mk III spokes by 1/2" each and rethreading them to use with the 18" rim. He was a litle wary because according to Carl, the spoke threads are rolled rather than cut, but it's been on there for 25 years and never gave a problem.

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Re: Alloy Rims

Postby chillemike » Sun Mar 21, 2010 2:17 pm

Thanks.. its starting to make sence.. very helpful info. im not going to give up yet and will share anything else i find out..
nortons rock!!

chille mike out..

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Re: Alloy Rims

Postby grandpaul » Sun Mar 21, 2010 3:31 pm

Drop-center rims DRILLED and laced by Buchanans on my Blue Monoshocker-

Image

(alloy out back, steel up front. DON'T ASK)
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Re: Alloy Rims

Postby DogT » Sun Mar 21, 2010 6:18 pm

I really hate to say this, but I don't think I could put a Norton badge on that bike except for the motor. I'm sure it is a fine bike and looks very fine.

I didn't know there were palm trees in Laredo

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