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N15CS Thread

Norton Models (not Commando or P11)

Re: N15CS Thread

Postby Kneepuck » Wed Jan 29, 2014 10:56 pm

First off, thanks for a very informative couple of posts. i spent many hours online and never came up with nearly so concise a bit of information. So, thanks for that, I now sort of know what I have. Even though it seems designed to be as confusing as possible, the way they did the numbers and such.

It is a G15CS #124335.

11 caveat though. Mine has a straighe, low set of exhaust. I don't know if that is significant or not. They seem to be origonal.

It's a project in the works
I started with nothing and I still have most of it.
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Re: N15CS Thread

Postby Rohan » Thu Jan 30, 2014 12:00 am

Kneepuck wrote:11 caveat though. Mine has a straighe, low set of exhaust. I don't know if that is significant or not. They seem to be origonal.


Something like this ?
Image

An N15CS or G15CS should indeed be like this.
As googling on this subject would show...

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Re: N15CS Thread

Postby Kneepuck » Thu Jan 30, 2014 5:14 pm

yup looks just like mine, only in better shape
I started with nothing and I still have most of it.
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Re: N15CS Thread

Postby BillT » Mon Feb 10, 2014 4:31 pm

Yeah, mine looks something like that...

Image

Got over a hundred miles on it, now. Starting to run cooler - think the rings are bedding in and getting a little better heat transfer.
'73 Norton 850 Commando - 3030xx
'69 Norton Ranger 750 - P11/1289xx
'67 Matchless G15CS - G15CS/1235xx
'61 Matchless G80CS - 61/G80CS/41xx
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Re: N15CS Thread

Postby mdt-son » Fri Mar 07, 2014 1:59 pm

BillT wrote:
The G80/G85/P11 used 1-1/4 teledraulics. Pre-interim hub G80s may have used 1-1/8 tubes - I'm not too familiar with the older models - but I know the G85 and P11 series used the 1-1/4 fork tubes. I had to replace one slider on my Ranger, and got a pair from a 1964 G80CS, which were 1-1/4, just like my P11. The P11 and G85 (all 130? of them) shared most components except the engine, oil tank, intake and exhaust systems


I am sorry Bill, but you haven't done your homework. The G85CS used fork tubes p/n 016377 which is the heat-improved 1-1/8" type developed in 1954 to combat some of the flexibilty problems. I can prove my point because I have the G85 lugs on the shelve. The G80CS & P11 used fork tubes p/n 022823 which is the beefed-up 1-1/4" tubes introduced for 1956. You also seem to mix up G80CS and G85CS. These are two very different motorcycles.

The reason why AMC put the thinner tubes on the G85 is simply to save weight. On the motocross track, flexibility isn't an issue, wherease on the road it is.

-Knut
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'75 Norton Commando Mk3 (coming together)

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Re: N15CS Thread

Postby mdt-son » Fri Mar 07, 2014 2:16 pm

BillT wrote:I think the heavyweight Teledraulics from the '60s are comparable to Roadholders. They're both 1-1/4 fork tubes and have a similar damper assembly.


Bill, this is incorrect. Teledraulic forks as used on G85CS and P11 models had 1-1/4in as you state. This equates to 31.75mm OD. The Roadholders are quite a bit stiffer as their fork tube ODs are at least 1.3575in (34.29 mm). This makes perfectly sense. The G15 series was a much heavier and powerful motorcycle, hence the need for stiffer forks and better brakes giving the bike the "road holding" it deserved. Cost savings by component standization was an additional bonus.

-Knut
Assorted '60s Matchless models
'75 Norton Commando Mk3 (coming together)

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Re: N15CS Thread

Postby zefer » Sun Jun 28, 2015 2:44 pm

I have a 1967 N/15 # 117188
CNW #012
1969 BMW R69S
1957 BMW R26
71 commando
2004 Ducati Multistrada 1000
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Re: N15CS Thread

Postby zefer » Thu Jul 02, 2015 4:00 am

Hey hey I've been looking at the N/15 thread for a while
And thought I'd chime in... I'm in the process of getting a early 1967 N/15 CS SN# 118177 it's got the Lucas mag and is a beautiful machine,it's on the way to me from Chicago as I write this post,as they All do.... This one has a great story.it came to the previous owner a hideous green with pull back ape
Hangars... Long story short the
PO saw fit to do a proper restoration and had some good
People helping with it too,it's my understanding that the reason it's been sold
To me..... It's a bear to start,apparently as this gentleman is aging....as we All are it's become difficult to kick over.... I've no reason to doubt the story as this guy is a well respected member of the CNOC and the documentation provided supports a substantial
Amount of engine work..... Again by a well repspected shop....anyway I pounced on the opportunity to own the bike, don't know if I'll have any more of a easier time staring it... We shall see.in any event like you folks... I just think these machines are so cool and their story so unique and all that,so I'll keep every one posted and when it gets back east I'll try And get some photos up,any advise,hints or tips will
Be greatly appreciated I'm certainly not a stranger to the norton brand.... Having owned several mid 60's atlas's and
Many commandos,currently have a 72 750 and a cnw machine that's it from me for now,I was kicking around the idea of playing around with some P11 trim.... Without making any permanent changes,such as fitting it up with the high scrambler exhaust,short seat and front skid plate,any thoughts,feedback or advise.... Oh yeah,I've seen pictures of these machines with triumph bonneville style mufflers fitted up too and they look super nice on this machine.... Again any feedback is welcome
Jeff
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1969 BMW R69S
1957 BMW R26
71 commando
2004 Ducati Multistrada 1000
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Re: N15CS Thread

Postby elefantrider » Mon Jul 13, 2015 12:40 pm

High pipes on any bike looks good to me. Let's see it....Post up some pics of your n15.
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Re: N15CS Thread

Postby zefer » Sun Jul 26, 2015 12:56 pm

I have a 67 N/15 CSR ( early 67 W/ magneto ) very nice motorcycle.... The sidestand is kind of scary ,anyone know of a retro fit to get the bike more up right and less of a lean angle
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Re: N15CS Thread

Postby dave schultz » Wed Jun 15, 2016 6:31 pm

In 1968 I purchased a new n15cs s# 116917. IN 1971 I traded it for new yellow 1971 commando. Three years ago I decided try and find the n15cs.
I found it and hauled it home. It is terrible mess but I will make every attempt to restore it.
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Re: N15CS Thread

Postby Bernhard » Thu Jun 16, 2016 5:32 am

zefer wrote:I have a 67 N/15 CSR ( early 67 W/ magneto ) very nice motorcycle.... The sidestand is kind of scary ,anyone know of a retro fit to get the bike more up right and less of a lean angle


The frame, not being the f/bed, is a Plumstead made one.
Even the Norton f/bed frame a side stand only came as an optional extra. …….
you could try welding a smallsection of metal on the foot :idea:

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Re: N15CS Thread

Postby AgentX » Sat Jun 25, 2016 7:37 pm

<----obtained a 1965 G-15CS from the original owner last year; it was sitting in storage while I was working elsewhere. It's been repainted an opaque red with non-standard striping and had a few interesting tweaks throughout its life; little rusty but it's still solid. Certainly not a show bike, which suits me fine, and at this point I'm just trying to get it running reliably. Tried to fire it up but got no spark, and found the carb slides seemed poorly-fit to the bodies, so I had the mag serviced and the carbs sleeved. Hopefully I'll have it fired up soon, but I'm going to need to wait on a few replacement gaskets and such. Apologies in advance for all the dumb questions you're going to get...

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Re: N15CS Thread

Postby grandpaul » Sun Jun 26, 2016 6:47 am

dave schultz wrote:In 1968 I purchased a new n15cs s# 116917. IN 1971 I traded it for new yellow 1971 commando. Three years ago I decided try and find the n15cs. I found it and hauled it home. It is terrible mess but I will make every attempt to restore it.


AgentX wrote:obtained a 1965 G-15CS from the original owner last year... Hopefully I'll have it fired up soon, but I'm going to need to wait on a few replacement gaskets and such. Apologies in advance for all the dumb questions you're going to get


I encourage you both to start project threads that everyone can refer to when searching for help in the future. You will than be valuable contributors to the forum, not just asking questions.

By the way, the only "dumb" questions are the ones that aren't asked!
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Re: N15CS Thread

Postby AgentX » Sun Jun 26, 2016 7:00 am

Will do...I have been working on it, but taking pics as I've been working on things has been tough. I think I'll take a pause and shoot some pics today and initiate the thread.

I think in my case, documenting the bike's documentation is a pretty amazing aside for the bikes. Boxes and binders of old parts catalogs and paper correspondence neatly filed, sketches of proposed mods and tweaks, all the owners' club newsletters and membership stuff... My wife kinda wants to make a project of all that.

It also came with a bunch of old Norton tin and spares of various sorts which will definitely come in handy for horse-trading down the road.

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