1964 Matchless G15 MK2
- Thread starter pierodn
- Start date
Hi Piero,
Neither is right according to my information. The CS had special internals and external springs, because the Norton roadster set-up doesn't work well in the rough. For 1967 even the CS became "civilised" and had the same internals as the roadsters. This is in full agreement with the spares book.
-Knut
Neither is right according to my information. The CS had special internals and external springs, because the Norton roadster set-up doesn't work well in the rough. For 1967 even the CS became "civilised" and had the same internals as the roadsters. This is in full agreement with the spares book.
-Knut
You are not obliged to, but I would do it, if only to make the bike like it was when it left the factory. The 1964-66 CS set-up (if that's what you have) may provide a harsh riding experience on pavement. This is my guess, but it's up to you. Beyond the riding experience, when fitting external springs, there is always friction between spring an fork tube which will damage the chrome in the long run.
-Knut
Hi Knut.
I will fit internal and external springs.
The question is if the G15 internal springs lenght is the same of the commando or is longer because the stanchions and dampers are longer like N15 (mine has the stanchions and the dampers longer than commando).
Let me know please.
Thanks
Piero
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The G15 Mk2 (roadster) spring length is identical to that of the 1968 Commando (NM18813 = 06-7723).
Damper 03-0037 was 1" longer than damper used in Atlas/Mercury (650). It seems Commando damper tubes are slightly longer than 03-0037 and threads are different. Damper rod NM15801 was identical betweem Dominators and the G15 lineup - damper rod off the Commando has different thread and possibly different length (likely shorter than the former).
Please have a look in the 1965 supplementary list for G15CSR. The 1964 list has some errors in the fork department.
Helpful notes are given by Anthony Curzon (aka John Donne) in this link:
http://www.jampot.com/forum/viewtopic.php?f=22&t=11335
I hope this helps.
Cheers,
Knut
Damper 03-0037 was 1" longer than damper used in Atlas/Mercury (650). It seems Commando damper tubes are slightly longer than 03-0037 and threads are different. Damper rod NM15801 was identical betweem Dominators and the G15 lineup - damper rod off the Commando has different thread and possibly different length (likely shorter than the former).
Please have a look in the 1965 supplementary list for G15CSR. The 1964 list has some errors in the fork department.
Helpful notes are given by Anthony Curzon (aka John Donne) in this link:
http://www.jampot.com/forum/viewtopic.php?f=22&t=11335
I hope this helps.
Cheers,
Knut
I don't think you will be very happy by your choice. Let's assume inner and outer springs have the same spring stiffness (k1, k2 respectively).
Then, the combined spring stiffness is k = k1 + k2 = 2*k1 according to our prerequisite.
So, spring stiffness will be twice as stiff as the factory setup. In reality it will be even stiffer.
Regards,
Knut
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Hi Knut.
I understand.
The final question is:
-to leave the external springs (without internals as i have found in);
-to fit the internal springs only without external.
Thanks for the help.
Piero
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