13.1
Commando Refinements
From: John Pinkham
Date: Fri, 20 May 94 12:03:16 EDT
For those who don't see the Norton News, it has some nice gizmos that
might make life easier.
1. An oil filter adaptor which allows the use of common auto filters
instead of the Crosslands which cost $9-12 US. The adaptor is simply an
internally threaded nipple. Cost: $10 + shipping. British Bike Connection,
58 Merwin Avenue, Rochester, N.Y. 14609 (716) 288-4546.
2. Exhaust flange nut wrench (Schraubenschussel fur Auspuffrohr Flansch
Schrauben) Fits the spark plug wrench for extra leverage. Fits in the tool
kit. Also opens inspection covers without damage. Cost:$28 including shipping.
Herr George Scholtz, 304 West Main St.,Grand Junction,Colorado 81505 (303)
243-6772. ALso makes oil filter bases for pre-73 Commandos.
From: John Kula
Date: Mon, 29 Aug 94 00:11:20 PDT
To: BRIT-IRO--INTERNET brit-iron@indiana.
-
Keep the Mark III vernier isolastics, excellent rear disk (although it
would have to be switched left), beefed-up swingarm and perimeter-screw
primary chaincase (if you can find a matching bottom end with the four
mounting points). Dump the "electric start" (a well set-up and kept Commando
will start no worse than 2nd kick 99% of the time anyway).
-
Get a 1964 Atlas gear cluster (the last of the case-hardened gears) and
an ME outrigger bearing for the gearbox to help with the load. Five gears
are unnecessary given the motor's grunt, and Quaife's set-up doesn't change
the bottom or top ratios (not to mention the price). Replace the clutch
plates with half phosphor-bronze and half Barnett. Then add a good belt
drive (Tony Hayward's is the best to date). A clutch that is good enough
for T.C. Christensen's double-engined Hogslayer should do just fine thank
you.
-
Remove the chrome from the disks, drill and chamfer them and then copper-plate
them. Use a double front disk if you like. Stainless steel hose, of course.
-
Hard chrome the fork tubes, replace the springs with triple-rates and put
40 weight oil in for stiffness. Then a good fork brace (Hyde's is excellent)
and any wobble will be gone.
-
Throw away the handlebar switchgear and replace with something less medieval.
-
Throw away the wiring harness and do it all yourself with 10, 12 and 14
gauge wire and copper spade connectors soldered on.
-
While you're at it, dump the regulator for a solid-state affair (get a
military-spec component).
-
Replace the alternator with a high output triple phase (it'll require an
extra zener, but hey, what price electric-free worries?)
-
Mount a Boyer, a couple of heavy-duty coils and a good (Fiamm) horn with
relay.
-
While yo're at it, an 8" headlight shell will throw more light than twin
5" headlights, and look more proportional to boot.
-
For a nice little twist, replace the side reflectors with those little
battery-powered strobe lights that cyclists use.
-
Get a gas tank that'll hold at least 3.5 Imperial Gallons.
-
Get a pair of those special vibration-dampening gloves that are now hitting
the market.
And then think about the engine itself.
-
The camshaft may need some work (the Mark III especially is soft and will
wear in 1/8" chunks).
-
Megacycle does an excellent job of hardening, and also smooths out the
power curve so there isn't a big kick at 4500 RPM.
-
Put roller bearings in if you're patient.
-
Carrillo make unbreakable rods and Arias have wonderfully slippery pistons
(you should _see_ them next to the Hepolites!).
-
Balance the crank (ask Mick Hemmings what factor he uses :-).
-
Flow the head, lighten the valve gear.
-
Replace the mufflers with stainless peashooters for low restrictivity and
use stainless fasteners everywhere.
-
If you _must_ add an oil cooler, get one with a thermostat because the
engine generally runs quite cool all by itself and you don't want to overdo
it.
-
Add an oil pressure gauge for sure; maybe a temperature gauge too.
Meet MacBeth :-)
John Kula Commando 930 (MacBeth)
Return to the
Contents Page