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G15 Questions

Re: G15 Questions

Postby Phantom Duck » Fri Oct 18, 2013 1:11 pm

Bill,

After viewing the picture of the primary, I can see why Clive said it was too far gone and you needed a primary. Wow! I'm really impressed with the result. :D Good to see you at Barber. Hope to see you soon, maybe at Wes'

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Re: G15 Questions

Postby BillT » Wed Oct 23, 2013 7:48 pm

Thanks for the help, James - you made my weekend!

Now that the bike is essentially done, I posted up a build thread. Learned a lot about this series, and will gladly share what I learned.
'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: G15 Questions

Postby dave M » Sun Oct 27, 2013 6:30 am

Does anyone know where I can get the front fuel tank mounts? i don't even know what they look like as my tank has empty tubes, I assume it is some kind of rubber plug with a thread bonded in, a bit like a long thin exhaust mounting.

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Re: G15 Questions

Postby Paul W » Sun Oct 27, 2013 9:59 am

AMC Classic Spares, Steven Surbey definitely has the mounts you require.
Telephone: (+44) 01462 811770

Fax: (+44) 01462 851035

spares@amcclassicspares.com

Regards, Paul.
1969 Commando S
1968 P11 Ranger (x2)
1966 650SS
1957 Model 30 International
1953 ES2
1939 Triumph Tiger 100
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Re: G15 Questions

Postby BillT » Sun Oct 27, 2013 10:17 am

Hi Dave,

The front fixing assembly is available from AMC Classic Spares. There are 5 or 6 pieces for each tube - a rubber disc goes in first, then a 3/8 CEI bolt with special thin head, then the rubber sleeve, which sticks out of the tube about 1/2-3/4 inch, then either one or two washers to sandwich the frame bracket, then a 3/8 CEI nut. I think you would want the kit 027161C, 2 required, which is for '61-on Competition models. As you tighten the nut, the bolt compresses the sleeve, which locks into the tube holding the tank firmly in place. The back is held by the same rubber ring found on Atlas tanks, and a Commando rubber works, too, if you cross the rubber to the opposite buttons. You need a rubber pad on the tank at the back of the tank spine, and again a Commando pad works fine. You don't need anything at the front of the spine, as the rubber sleeves hold the tank above the frame tube.

As I've stated elsewhere on this forum, I've found Mike at Walridge to be a great source for hybrid items, but Steve at AMC Classic Spares is the best source for those items that are unique to AJS/Matchless machines, especially this nut-and-bolt stuff.

Paul answered you while I was writing my rather long-winded reply. I know he's a regular customer of Steve, also :wink:
'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: G15 Questions

Postby dave M » Mon Oct 28, 2013 12:41 am

Thanks Paul and Bill, it is so handy to have others with firsthand G15 knowledge on the forum as my own project continues on at the rather slow pace dictated by living over 6,000 miles from where the bike is actually located!

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Re: G15 Questions

Postby BillT » Fri Nov 29, 2013 7:36 am

As I have a few days off for our Thanksgiving holiday, I spent yesterday with the bikes, tweaking and such. Rode the G15 another 20 miles or so, working out the kinks (up to 50 miles now). Bike is settling in, but is still running a bit hot. I may change the drive sprocket, too. 17 teeth just feels a bit too buzzy. The 19 tooth sprocket of the Ranger seems a better size for a bike like this.

I'm going to try to get the bike into the Boca Concours, so need pictures for the application. Rode each hybrid over to a local park and snapped some pics in the afternoon. These are the ones for the G15:
Image
Image
Image
Image
Image
Pics are a little clipped, I guess due to the size of the file. Ranger pics are posted up on the P11 thread :)
'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: G15 Questions

Postby BillT » Sun Feb 02, 2014 10:19 am

Update on the G15CS

The bike sat for pretty much all of December and part of January, due to work being somewhat chaotic the past several months. Got it up on the table around the 10th of January to address a number of issues

- I didn't like the 17 tooth sprocket the bike came with
- the primary had an annoying leak - went through three gaskets trying to seal it
- I wanted to re-time it with a degree wheel, still running hot and perhaps I was a bit retarded (in my timing, not my mind)
- time to retorque everything and check valve lash

I picked up a really nice-looking 19 tooth sprocket at Wes' shop and tore into the bike. With the primary off, I re-checked the timing. I was 9 degrees retarded, which would help explain less-than-crisp revving and hot running. With the new sprocket, I found my chain one link too short. Ordered a cranked link while doing the rest of the stuff. After two tries, got the primary to 'practically' stop leaking. It is shaking out pretty well, and I've started running on longer rides (1/2 to 1 hour). Got the bike cleaned up and brought it to the Dania show last week.

It took second in its class - English 'Other' 1960-up. Due to the number of Triumphs and Nortons, they were in their own classes, but there were probably 25 bikes in the 'other' class, including Royal Enfield, AJS, BSA, Velocette, Ariel.

The Ranger won in the Norton class, with my Commando coming in a surprising 3rd behind a '39 16H.

Both the G15 and Ranger were invited to the Boca Raton Concours d'Elegance in 3 weeks :D
'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: G15 Questions

Postby dave M » Sat Aug 02, 2014 10:26 am

Bill, I am back in California and making good progress on my bike, I wanted to ask a couple of questions:

What does the front lower hole in the toolbox inner shell mount to? I have found that there is a hole in the top and one at the back that mounts to corresponding points on the frame, but it looks like the lower hole must mount to a bracket that would in turn be bolted somewhere on the frame.

The inner primary cover has three holes in close proximity to each other, one is for mounting the case to the engine/gearbox plate, the other is for the alternator wires to exit the case and the 3rd I cannot see a function, although I am inclined to seal this up to prevent primary oil going everywhere.

Thank you.

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Re: G15 Questions

Postby BillT » Sat Aug 02, 2014 4:10 pm

dave M wrote:Bill, I am back in California and making good progress on my bike, I wanted to ask a couple of questions:

What does the front lower hole in the toolbox inner shell mount to? I have found that there is a hole in the top and one at the back that mounts to corresponding points on the frame, but it looks like the lower hole must mount to a bracket that would in turn be bolted somewhere on the frame.

The inner primary cover has three holes in close proximity to each other, one is for mounting the case to the engine/gearbox plate, the other is for the alternator wires to exit the case and the 3rd I cannot see a function, although I am inclined to seal this up to prevent primary oil going everywhere.

Thank you.


Hi Dave,

That bottom hole in the toolbox mounts to a tab on the battery tray. Look at the tray, and you should see a bracket on the front edge that comes down about an inch and a half - that should line up with that hole. Mine is a late G15, and this tab is welded to the tray. Yours may be different, and it may be a bolt-on 'L' bracket.

The third hole is a breather for the primary. I fit a breather pipe I had leftover from a battery, and fit a plastic elbow on the inside to make a sort of trap. If you look at the primary case, you'll see that there's actually an eyebrow over that hole to keep oil from splashing out as it falls off the primary chain.
'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: G15 Questions

Postby dave M » Sat Aug 02, 2014 10:09 pm

Thank you Bill, as usual you have been most helpful. With a bit of luck I might get the engine running on this trip. I have posted a few photos in my old G15 Project thread and will post more within the next week or so.

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Re: G15 Questions

Postby dave M » Thu Aug 07, 2014 4:16 pm

Bill, I wonder if I could yet again impose on you and ask what is the width of the spacer between the rear brake drum and the swingarm on the left side of the bike and the spacer between the speedo drive and the swingarm on the right side. Many thanks.

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Re: G15 Questions

Postby BillT » Sun Aug 17, 2014 5:58 pm

Sorry Dave, I've been pretty busy.

The brake side spacer, 03-0017, is 13/16ID, 1-1/4OD and .672 long.

The speedo side spacer, 03-0013, I don't have the dimensions on, but measuring with a caliper, its 1"OD and 1-1/16 long.

Bill
'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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BillT
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Re: G15 Questions

Postby dave M » Sun Aug 17, 2014 7:07 pm

Please don't apologise Bill, I assumed you hadn't seen my post and I am yet again indebted to you. I hope to have the engine fired up on this trip. The rear spacers that came with the project seem to be a mix of Commando and other models.

Many, many thanks.

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Re: G15 Questions

Postby andychain » Sat Oct 11, 2014 5:44 am

Bill love what you have done.

Was the crank link a single or double?

Is it fitted with 2 links or rivetted into the chain?

It is not good to put a new crank link in even a slightly worn chain so
if you count the pins in your chain I will gladly send you an iwis with the
crank correctly fitted.

Andy

PS just mail me

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