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SPROCKET TALK

Modern 961 Norton Commando Motorcycles

Re: SPROCKET TALK

Postby Raphi » Mon Sep 12, 2016 11:13 am

As far as my measures show I have to reduce about 10% from shown speed with the 17 tooth sprocket to get actual speed. Same is obviously applicable to mileage...
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Re: SPROCKET TALK

Postby Smudge » Sun Sep 25, 2016 2:38 am

Hi, Am new to the Norton,( am coming from sports bikes) so Im looking at changing the gearing, I have ordered a 52 tooth rear, so what I was wondering any boby who has played around with there gearing did you fit a speedo healer if so which one.

Any help would be gd.

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Re: SPROCKET TALK

Postby TonyA » Sun Sep 25, 2016 8:06 am

You may want to go down 1 tooth in the front sprocket instead. The clearance issues may be better with the smaller front sprocket .

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Re: SPROCKET TALK

Postby Smudge » Sun Sep 25, 2016 11:19 pm

Hi Tony, Normal thats what I would have done but after reading this thread I realised that the front drive shaft had changed over the years from the yearly ones, so I spoke to Norton & was informed that they would only recommend factory fit and I should talk to Talon (they make the sprockets), So spoke to them and was informed that it had been a few years since Norton had asked for any sprocket to be made so they couldn't tell me what I needed for the front but the rear they could from the factory ref N0, thats why I ordered a rear & when I fit the rear I was going to contact them again with the information so they can match up the front. But I take it noboby fits a speedo healer when the change?.

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Re: SPROCKET TALK

Postby TonyA » Mon Sep 26, 2016 4:04 am

I have not done it and I have not heard of it being done. BUT , if you would be so kind as to share your findings with us that would be great. Especially if you can get the correct fitting front sprocket for the early 961. Its interesting to see that Norton recommend factory fit for the early bikes ? Are you also saying Norton cannot provide you with a 17t early spline ? Only a 18T early spline ? Sorry if I misunderstand. I think G81 Can Cycle may be making front sprockets . That would also be great if Talon themselves would provide an 2013 and earlier spline and a 2014 and later spline front sprocket.

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Re: SPROCKET TALK

Postby TonyA » Mon Sep 26, 2016 9:46 am

I have another idea that may interest . If you reduce the front to 17 T and the rear to 47 T you would have virtually the same gearing. The smaller rear sprocket would provide the more chain clearance and the 17 t front would bring you back to stock gearing (nearly). Stock = 18/50 = 2.778 to 1 and New 17/47 = 2.765 to 1 (almost the same ) !! (Hey , I like this Idea) I've been looking at the Talon website , and 961 rear sprockets in various sizes are a plenty... It would also be noteworthy if you could find out if they will make the Newer style 961 spline as well OR do we need to go to Norton ? Do you live in England , where Talon is by chance ?

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Re: SPROCKET TALK

Postby richard-7 » Mon Sep 26, 2016 10:03 am

Here is the answer you may be looking for from the first page>>>>>


there is only a minor difference in inspection criterion between the ones you received, and the ones that seem to fit the 2014 and later. As I understand it from Dave Coote (Richard's father) Norton is selling the newer sprocket to fit on the older bikes. This will make the fit a little "loose", but this should not be a problem

We use the same spline on some of the industrial tools we make. With same spine (tooth thickness) and about 2/3 less teeth, this spline accepts 3200 ft/lbs (4338 Newton meters) So this spline should never fail even when it is a loose fit to the countershaft

Hopefully they will fit your 2012 bike.

We are recutting the rest of the units for fit to the newer bikes. I will send a set to Richard to see how the fit is on his 2013

We will branding these sprockets with the One O7 name and selling them through CNW.

More stuff to come, but it is still a secret.

John
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Re: SPROCKET TALK

Postby G81 Can Cycle » Fri Oct 14, 2016 9:34 am

New countershaft sprockets went out to Matt @ CNW today. 17 and 19 tooth

Should be about $130 to $140 each, but Matt will set final price
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Re: SPROCKET TALK

Postby TonyA » Fri Oct 14, 2016 3:03 pm

Hello John Great news . I would like to order a 17t in the near future .

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Re: SPROCKET TALK

Postby G81 Can Cycle » Mon Oct 17, 2016 8:18 am

Just a heads up. We made 20 each of the sprockets (20 each 17 tooth, and 20 each 19 tooth) We used one set for the race bike, one set for testing to Richard, and one set to Raphi in Switzerland. 4 sets were damaged when we recut the splines. So only 13 of each sprocket are being sent to Matt at CNW.

I will only make more if Matt gets back orders. So if you want a set, get a hold of Matt and order yours soon

The sprockets have been tested on three different bikes (Richard's, Raphi's, and tested hard on the race bike) There is a one year warranty on the sprockets. They are made of 4340 chrome moly steel, and heat treated to 54 Rockwell C. If you have any problems, you can reach me here on the site, or Matt and Richard have contact info

John
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Re: SPROCKET TALK

Postby richard-7 » Wed Oct 26, 2016 11:59 am

LINK TO CNW >>> http://coloradonortonworks.com/part-cat ... -machines/

They are finally available... :mrgreen: :mrgreen:
Who is getting one?

Post your reviews after install. Anyone want the highres version of the manual for install just ask.

LINK TO INSTALL MANUAL>>>> http://coloradonortonworks.com/wp-conte ... 61-WEB.pdf
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Re: SPROCKET TALK

Postby GKRyder » Wed Oct 26, 2016 2:20 pm

Ordered :D

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Re: SPROCKET TALK

Postby contours » Wed Oct 26, 2016 4:25 pm

Normally I would jump on something like this. But I have yet to get used to the stock sprocket. :roll: I'm sure it would improve things, but I can wait til it's back ordered.
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Re: SPROCKET TALK

Postby pingu-nz » Thu Oct 27, 2016 10:24 pm

ordered 17 tooth

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Re: SPROCKET TALK

Postby cNw » Sat Oct 29, 2016 7:52 am

Hey,

Just wanted to say thanks to those that ordered the sprockets right away.

John, Richard and myself certainly appreciate it. It takes a lot of work to turn something from an idea into a product available for sale and it comes full circle when these parts are being bought and used as intended

Richard and John put a ton of effort into the 961 stuff and we are really fortunate to have these passionate guys on our side

Thanks

Matt / Colorado Norton Works

www.coloradonortonworks.com
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