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My 1968 Atlas Cafe Racer Build

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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Mon Mar 07, 2016 3:16 pm

triumph2 wrote:
Bud64 wrote:Been try to put a history together on my bike and it's getting really interesting.
I was told by the last owner that the bike was an Atlas, but from the Frame code 18/129550 this would make the bike a 1968 Mercury 650 (1 of 750 bikes built).
The motor code 20/1146714P (P= Plumstead) is from a earlier 1965 Atlas 750.
If anyone knows more about these two build codes, I'd love to hear about it.


I have a Mercury, matching numbers, 129551
Hope to see you at our Mods and Rockers event in August.


What are the chances of that, they came down the assembly line one after another. So what year is your Mercury registered as?
I plan to be there if I don't have to work.
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Re: My 1968 Atlas Cafe Racer Build

Postby triumph2 » Tue Mar 08, 2016 9:52 am

Mine is registered as a 1969.
'73 Norton Commando 850
'69 Norton Mercury 650
'65 Norton Atlas 750
'63 Matchless G80CS 500
'05 Triumph Rocket III
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triumph2
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Re: My 1968 Atlas Cafe Racer Build

Postby Bernhard » Thu Mar 10, 2016 8:04 am

Bud64 wrote:Here's a closer look at the Joe Hunt Magneto that replaced the stock Lucus Magneto and ignition system. The Joe Hunt mag is a all in one unit that connected to the stock timing sprocket and cleaned up the ignition system.




Do you know if you can use the Joe Hunt magneto with the Amal twin carb setup :?:

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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Thu Mar 10, 2016 3:23 pm

The Carb set-up does not matter or effect the running of the Joe Hunt Mag.


Bernhard wrote:
Bud64 wrote:Here's a closer look at the Joe Hunt Magneto that replaced the stock Lucus Magneto and ignition system. The Joe Hunt mag is a all in one unit that connected to the stock timing sprocket and cleaned up the ignition system.

http://s619.photobucket.com/user/larsbud/media/Atlas/DSC02231_zpsmo1rv7bh.jpg.html



Do you know if you can use the Joe Hunt magneto with the Amal twin carb setup :?:
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Sun Mar 20, 2016 4:59 pm

Here's a look at the old girl running, it's a sunny but cold day. (just above freezing)
https://youtu.be/ZZAxuQMuijY
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Tue Mar 22, 2016 2:53 pm

So what did it take to build this bike, well I have the list.
This list is put together for the last owner and myself.

Part # Description Quantity Cost
4.048 Sprocket 19T 1 $ 52.70
91 Cable 1 $ 11.40
92 Cable 2 $ 15.90
97 Cable 2 $ 13.90
201 Anti-Clock Labels 1 $ 11.50
204 Screws 2 $ 2.54
579 Cable 1 $ 23.95
19086 Battery Platform 1 $ 29.75
17-Sep Gas Spiggot ¼” 1 $ 3.19
47205 Stator 1 $ 146.86
81603 Rubber Cable Ties 10 $ 11.60
81609 Slotted Roller CS20 2 $ 5.90
451379 Insulating Caps 1 $ 4.35
455190 Earth Brush 1 $ 6.43
459002 Mag Seal 1 $ 11.99
459005 Insulating Washer 1 $ 3.80
54202275 Rotor 1 $ 193.88
00-075 Roller set of 30 1 $ 42.30
001-233 Mikuni Atlas Kit 34MM 1 $ 325.00
004-687 Horn 12V 1 $ 24.80
01-4869 Nut 2 $ 13.23
03-0023 Washer 1 $ 1.65
03-1544/5 Atlas/G15 H/L BRKT (pr) 1 $ 125.90
03-2044 Oil Pipe Gasket 1 $ 1.20
03-3218UK K/S Rubber 2 $ 7.00
04-0005 KS Seal 1 $ 1.35
04-0006 GC Seal 1 $ 1.35
04-0030 G Box Inner Gasket 1 $ 2.45
04-0055 G Bow Outer Gasket 1 $ 2.40
04-0099 TR M/S Brng 1 $ 26.95
04-0131 Sprocket Spacer 1 $ 27.12
04-0132 G Box Seal 1 $ 6.75
04-0356 Nut 3 $ 8.82
04-0358 Clutch Spring 3 $ 6.60
04-0367 Cage 1 $ 32.15
04-0373/B Nut Clutch W/CL Pushrod 1 $ 45.45
04-0386/7 AMC Clutch Rubber Set 1 $ 15.50
04-0388 Cup 3 $ 37.95
04-0389 Adjuster (NOS) 3 $ 11.85
04-0434G Genuine Kick Start Assy 1 $ 179.25
04055S/S 5/16 Flat Washer 3 $ 1.17
04-0607 Clutch Push Rod Atlas 1 $ 24.90
04-3191 Atlas Steel CL Plate 5 $ 63.50
04-3362 Alloy Pressure Plate 1 $ 39.81
04-3441/B Stud 3 $ 52.20
04-3443 Clutch Spider 1 $ 89.95
04-3445 Plate CL/Cush Drive 1 $ 35.75
04-3448 Screw 3 $ 4.50
04-8023 Oil Seal 1 $ 6.45
05-00716 Gas Tap Washers 2 $ 2.06
06-0005 Clutch Adjust Nut 1 $ 3.40
06-0401S/S Head Bolt 2 $ 33.00
06-1092 Comm T/C Gasket 2 $ 9.42
06-2464 EX Nut 2 $ 59.00
06-3192S/S Front Sleeve Nut- Reduced Hex Type 2 $ 25.20
06-3527B 72-74 Comm EX PB GD 2 $ 35.00
06-3968 Norton Exhst Wrench 2 $ 50.94
06-4147S/S Washer CY Base/Head ETC 4 $ 13.00
06-5718 Key Rotor 1 $ 5.35
06-6978 Rocker Ball 8 $ 138.76
06-7114 Roadholder Badges (pr) 1 $ 14.25
06-7243 Trans Gasket/O-Ring Set 2 $ 15.90
06-7507 Collets 8 $ 29.60
06-7510 Oil Pump Seal 1 $ 3.25
06-7512 H/L BRKT Top Rubbe r 2 $ 11.00
06-7514 Washer 2 $ 3.64
06-7517 Damper Tube Washer 2 $ 5.28
06-7520 Fork Seal Gasket 2 $ 47.30
06-7550 Outer SP GSKT 4 $ 6.00
06-7551 R/Box Inlet GSKT 2 $ 3.86
06-7552 Exaust Cover Nut 4 $ 19.80
06-7554 R/Box Exhst GSKT 4 $ 7.60
06-7565 Engine Sprocket 21T 1 $ 75.00
06-7567 Oil Seal 1 $ 7.81
06-7568 Norton Mag Gasket 1 $ 2.40
06-7571S/S Stud/CE27 2 $ 14.44
06-7580 R/SPNDL GSKT 4 $ 6.00
06-7604 Comm Head BRNG 2 $ 47.90
06-7627 Atlas C/C Rubber 1 $ 18.57
06-7636 Circlip 2 $ 9.02
06-7710 Norton Layshift/Wheel Bring 1 $ 19.92
06-7714 Atlas Fork Tubes (pr) 1 $ 179.95
06-7726S/S Stud/CE27 1 $ 7.60
06-7732 Shrinkproof Washer 5/8” 1 $ 1.50
06-7739 Spindle Nut 1 $ 4.13
06-7779 G15ETC 2 $ 3.12
06-7863/4A Atlas Pipes (pr) 1 $ 220.00
06-7869 750 Norton BSE Gasket 2 $ 4.90
06-7870S/S Cylinder Head Base/Rear Nut 1 $ 4.35
06-7871S/S Stud/CE27 6 $ 45.42
06-7873S/S Head Bolt Atlas etc 3 $ 47.40
06-7907 Screw 3 $ 5.85
06-7924 Rocker Spindle 4 $ 79.80
06-9134 Rivit (set of 4) 1 $ 7.15
09-0013 H/L Bracket (pr) 1 $ 23.65
19145STD Norton STD (pr) 1 $ 325.00
20-0008 Fuel Filter 1 $ 2.75
244-1048 M’Block O Ring 2 $ 2.80
33-127 Kreem Complete Kit 1 $ 59.75
334-1278 Joe Hunt Mag 1 $ 777.00
345-01 Plug Wire Kit 1 $ 13.75
376/078 M/BLC Float Gasket 2 $ 2.70
4/046 Spring 2 $ 8.10
4/235 Spring 1 $ 6.10
60-3556 High GR Bring 1 $ 70.04
60-7595 Key 1 $ 4.90
622-197 Viton Needles 2 $ 16.70
76-1119 Prog Susp Norton Fork Spring (pr) 1 $ 113.98
82-3337 BSP Gas Union Nut 1 $ 2.48
83-2801 Pet Cock 1 $ 31.65
86-301 Power Module – Single Phase 1 $ 73.45
93-09089 Tire Pump 14.5” 1 $ 32.50
96-400 Solid State Rectifier 1 $ 26.02
97-024 Rim Tape 2 $ 3.50
97-420 Autosol 1 $ 12.95
97-423 Grind Paste 1 $ 7.45
9-9001 84 pcs CEI Set 1 $ 93.83
9-9001 54 pcs CEI Set 1 $ 77.60
9-9003 75 pcs Washer Set 1 $ 8.30
9-9004 130 pcs Washer Set 1 $ 11.40
99-032018 Heat sink Assy-Coil IG Atlas/G15 1 $ 49.25
99-100 Bullet Conn 6 $ 5.70
99-103 Solder Bullet 6 $ 5.40
99-US/S Anti Wet Sumping Valve 1 $ 115.15
A3600 Belt Drive Kit 1 $ 895.00
A5000 Rear Sets 1 $ 329.00
A605 Behind Gearbox Battery Carrier 1 $ 75.00
A6510 Featherbed Rear Frame Loop 1 $ 179.00
A910 Center Mount Oil Tank 1 $ 289.00
C299 ¼” Clear PVC (ft) 4 $ 5.00
CE30 Base Nut/Washers CEI Set 1 $ 54.23
CPS006 Surflex AMC PL 5 $ 101.00
CPS012 Atlas Single Sided Plate 1 $ 24.00
DCE59 750 Crank Bolt Set 1 $ 54.45
DCE8 CRE HD Bolt & Washer 1 $ 11.55
DCE9 Front HD Nut & Washer 2 $ 9.02
DE42 5/16 HD Bolt & Washer 1 $ 16.01
EBS31 Atlas Bolt Set 1 $ 32.18
Engine Work Rod Brgs $ 53.00
Engine Work Super Blends 2 $ 198.00
Engine Work Grind Crank Journal $ 90.00
Engine Work Balance to 78% $ 240.00
Engine Work Labour (Highway Cycle) $ 355.00
FR14 Wheel Adjustr & LKNut 2 $ 21.60
MIK34/36 Cable 1 $ 15.25
SCM017 Cable CLN/01 5’9” 1 $ 25.50
SHC16 Norton Transmission Set 1 $ 8.55
SUND1506 Cam Ring K2F Atlas 1 $ 86.00
SUND999 Good PR Case 1 $ 200.00
T1048/55 Norton Fork Rebuild Kit 1 $ 66.50
TCM006 Cable CLN/F 2’8” 1 $ 25.50
WH1159 Wire Harness 1 $ 103.75
Powder Coating Frame 1 $ 250.00
Oil Catch Tank 1 $ 39.99
Stainless Steel Braided Oil Line 1 $ 5.14
Norton Seat Cover and Pad 1 $ 280.91
Cocktail Shaker Mufflers - Upswept 2 $ 240.00
Carb Velocity Stack 1 $ 33.00
Center stand spring and clip 1 $ 14.00
Battery 1 $ 64.00
Total $ 9,643.71
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Mon Jul 18, 2016 5:57 am

So here’s an update on the issue of to much oil coming out the crankcase over flew. I reduced the amount of oil I have in the centerline oil tank and that seems to help, but there’s something more.
I was out riding and she was running smooth and with no issues, but over an hour out the bike began to lose power and then stalled out. I pulled in the clutch and coasted, geared down and then dropped the clutch and the bike restarted and I could keep riding, but I looked down and oil was dripping from everywhere. I stopped and wiped down the bike, the oil seemed to have blown through the seals and into the exhaust (was dripping from the pipes).
So I’m thinking, to much pressure built up in the motor and pushed the oil out causing the motor to die and oil to blow past. This is not the first time this has happened, so ant ideas on the cause????

1/ the centerline oil tank does not have a breather or a crankcase return.
2/ I have a inline dry sump valve installed.
3/ motor is a full rebuild with only 120 miles on it.
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Re: My 1968 Atlas Cafe Racer Build

Postby grandpaul » Mon Jul 18, 2016 6:08 am

1. Oil tank NEEDS a breather

2. How can it not have a crankcase return? That is necessary for proper operation? Or what are you meaning?
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Mon Jul 18, 2016 6:35 am

On the left-hand side of the crankcase there is an oil overflow/drain line that use to run to the stock oil tank, but since new centerline tank has no connection I’ve just run it to a ketch can (which I have to empty every run).
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Re: My 1968 Atlas Cafe Racer Build

Postby grandpaul » Mon Jul 18, 2016 7:02 am

...never mind...
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Re: My 1968 Atlas Cafe Racer Build

Postby grandpaul » Mon Jul 18, 2016 7:10 am

POSSIBLY, your breather isn't able to breathe freely, and you over-pressurized your cases. Something could be amiss in that catch can setup.
GrandPaul
author "Old Bikes"
too many bikes to list, including:
JPN, 952 Prototype, MkIII Interstate, Combat Dunstall, VR880 SS, Triton
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Mon Jul 18, 2016 8:35 am

So I’m thinking, if I add a vent line to the center oil tank and rout the oil overflow also into the oil tank instead of using the ketch can, this may work better.
The center tank is fiberglass, so drilling to holes and fitting to line connects should be easy enough.
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Sat Feb 25, 2017 6:27 pm

Well winter work starts again on the old girl. Pulled off the single carb and going over to twin Amal 930 carbs. Looking forward to see how much better the top end performance will be.
Week One
Have two resleeved Amal 930 carbs with cables.
But still need to get studs and nuts, manifolds to attach everything together.

Week Two
So got the manifold from Highway Cycle last Monday and the studs from a local nut and bolt shot. Got some 5/16 coarse x 2" long studs that really worked well.
Now I'm just waiting for some new gaskets to put it all together permanently, did a test fit and everything matted up nicely.
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Re: My 1968 Atlas Cafe Racer Build

Postby Bud64 » Sat Feb 25, 2017 7:11 pm

Added a return line to the oil tank for the engine vent:

Image
Image

Added a breather to the oil tank:

Image

two issues fixed, can't believe that they didn't have these two things on the tank.
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