Search found 1815 matches

by kommando
Sun Jun 21, 2020 12:10 pm
Forum: Tech
Topic: 441 Victor resurection
Replies: 13
Views: 738
Flag: Ireland

Re: 441 Victor resurection

Its 2 pickup coils and 2 magnets, same for both the singles and twins, the Boyer box is also the same so fully wasted spark in singles and twins. The electronics averages the 2 signals so guaranteeing a 360 degree gap between sparks unlike 2 sets of points points, great for twins but not needed for ...
by kommando
Sat Jun 20, 2020 8:41 am
Forum: Tech
Topic: 441 Victor resurection
Replies: 13
Views: 738
Flag: Ireland

Re: 441 Victor resurection

That looks like the Boyer ignition setup. It's wasted spark so fired every 360 degrees. The timing goes off with low battery voltage or a corroded connector including earth path.
by kommando
Sat Jun 20, 2020 8:39 am
Forum: Tech
Topic: Engine Builder
Replies: 7
Views: 432
Flag: Ireland

Re: Engine Builder

Other than assembling and truing the crank the rest is relatively easy.
by kommando
Tue Jun 16, 2020 11:35 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 23
Views: 1259
Flag: Ireland

Re: LOBE 2 20-21

The third bearing is not needed, it provides location for the crank so the endfloat, but you can do this with shims. If you still have any concerns then just got the heavy duty roller bearings with the E added to the bearing number.
by kommando
Tue Jun 09, 2020 7:38 am
Forum: Tech
Topic: B25 1969 starting problems
Replies: 10
Views: 338
Flag: Ireland

Re: B25 1969 starting problems

Boyer MK4 matches the low voltage performance of the Pazon.
by kommando
Tue Jun 09, 2020 7:36 am
Forum: Tech
Topic: Crankshaft bearings
Replies: 4
Views: 349
Flag: Ireland

Re: Crankshaft bearings

V3 is a vibration spec, nothing to do with internal clearances, at the time Hoffman used dots or etched circles to denote internal clearances. C3 is the default internal clearance for a bearing set in alloy and Hoffman developed the concept using 3 circles or dots.
by kommando
Mon Jun 01, 2020 3:47 pm
Forum: Tech
Topic: B40 triple clamp material
Replies: 13
Views: 524
Flag: Ireland

Re: B40 triple clamp material

was there an ally clamp fitted to any BSA models prior to B50 say Victor?
No
by kommando
Sun May 24, 2020 11:39 am
Forum: Tech
Topic: B50 rotor nut.
Replies: 9
Views: 1348
Flag: Ireland

Re: B50 rotor nut.

Stick it in 4th and put a heavy boot on a heavy persons foot on the rear brake lever, some blue/green loctite but not red is good insurance.
by kommando
Wed May 20, 2020 10:55 pm
Forum: Tech
Topic: pattern tricon switch
Replies: 11
Views: 520
Flag: Ireland

Re: pattern tricon switch

I put a piece of inner tube under the switch.
by kommando
Mon May 18, 2020 10:03 am
Forum: Tech
Topic: B25T Gearbox Clicking – What Sound is This?
Replies: 13
Views: 633
Flag: Ireland

Re: B25T Gearbox Clicking – What Sound is This?

You are going to have to open the gearbox and inspect all the parts, I would be looking first for missing teeth. Even in neutral the gears rotate but transmit no power so my guess is a missing tooth on one of the gears or one side of a gear tooth is eroded.
by kommando
Wed May 13, 2020 9:59 am
Forum: Parts & Bikes wanted
Topic: 1970 OIF B25 parts.
Replies: 6
Views: 553
Flag: Ireland

Re: 1970 OIF B25 parts.

Your bike was built in 1970 but was built to 71 model year specs, call up a supplier and describe it as a 70 and not a 71 and unless you quote part numbers the 70 model parts will be supplied. I have 2 69 model year Victors both built in 68 but they are 69's and I use the 69 parts books to order the...
by kommando
Tue May 12, 2020 6:05 pm
Forum: Tech
Topic: 36 Hole Front Hub Options
Replies: 15
Views: 619
Flag: Ireland

Re: 36 Hole Front Hub Options

Looked at your location and thought of Speed & Sport who have a good reputation and I found https://www.speedandsport.com/index.php/parts/tires-and-wheels/rims-excel-non-dimpled/ Excel rims are possibly the highest-quality alloy rims on the market. They are anodized with a very-bright, almost-polish...
by kommando
Tue May 12, 2020 6:01 pm
Forum: Tech
Topic: 350 and 441 use the same Intake valve
Replies: 4
Views: 265
Flag: Ireland

Re: 350 and 441 use the same Intake valve

I thought the stem length was longer on the Square barrel, will check in the garage tomorrow, although I was trying to do it today so no promises.
by kommando
Tue May 12, 2020 2:20 pm
Forum: Tech
Topic: 36 Hole Front Hub Options
Replies: 15
Views: 619
Flag: Ireland

Re: 36 Hole Front Hub Options

Excel rims can be supplied undrilled, worth asking if they can also come without dimples. Good wheel builders can drill holes to suit your application.
by kommando
Fri May 08, 2020 4:47 pm
Forum: Tech
Topic: Outer timing cover equivalences
Replies: 10
Views: 630
Flag: Ireland

Re: Outer timing cover equivalences

Yes, wrong cover. LOL
by kommando
Fri May 08, 2020 1:17 pm
Forum: Tech
Topic: Outer timing cover equivalences
Replies: 10
Views: 630
Flag: Ireland

Re: Outer timing cover equivalences

koncretekid wrote:
Fri May 08, 2020 11:33 am
Outer timing cover should not be affected by the crank seal, to my knowledge.
Everything being factory then it should still work, but if in the past the end of the B44 crank has been hammered to a balloon and then shortened to bring back to size then it could miss the B25 seal.
by kommando
Fri May 08, 2020 8:59 am
Forum: Tech
Topic: Outer timing cover equivalences
Replies: 10
Views: 630
Flag: Ireland

Re: Outer timing cover equivalences

No, you also need to check the slot position for the points wires, the type of hole for the crank end seal as the B25 version has a circlip which moves the seal out further which risks it not fitting a B44 crank. There were other detail changes as every year there were changes.
by kommando
Thu May 07, 2020 1:33 pm
Forum: Tech
Topic: oil volume
Replies: 13
Views: 1317
Flag: Ireland

Re: oil volume

The temp going back to the tank is useful but not the whole story. http://www.nortons.dk/doc/lubricants.pdf In summary if you have a hot spot in an engine such as next to the exhaust valve then oil that passes through this can be degraded quickly and it never recovers. This may be only a small amoun...
by kommando
Tue May 05, 2020 11:29 am
Forum: Tech
Topic: MX Exhaust Question
Replies: 7
Views: 515
Flag: Ireland

Re: MX Exhaust Question

Info was for wrong bike.
by kommando
Mon May 04, 2020 12:38 pm
Forum: Tech
Topic: B50MX cam in a B25 and Big bore ideas.
Replies: 10
Views: 755
Flag: Ireland

Re: B50MX cam in a B25 and Big bore ideas.

The B50 crankcases are significantly different to the B25 in that the driveside cases are duplex roller bearings and have breather ports. Converting B25 to a B50 would as you mentioned require a significant amount of work with doubtful longevity. You don't need the extra ball bearing, it carries no...
by kommando
Sun May 03, 2020 8:20 pm
Forum: Off topic
Topic: Any part of the old BSA Company still around?
Replies: 3
Views: 650
Flag: Ireland

Re: Any part of the old BSA Company still around?

BSA air guns are still in Armoury Road, there are a few on the machine tool side still going and I think a sintered products concern.
by kommando
Sat May 02, 2020 10:01 am
Forum: Tech
Topic: Leak back,
Replies: 20
Views: 1274
Flag: Ireland

Re: Leak back,

My b25 project has been stood a couple of months and yesterday was the Big first start day, anyway after the usual double checks of the timing and fuel I found it difficult to kick, on dropping the sump plate I got approx a litre of oil 1 litre in a couple of months is nothing to worry about. I did...
by kommando
Fri May 01, 2020 8:15 am
Forum: Tech
Topic: Best Electronic Ignition
Replies: 23
Views: 2137
Flag: Ireland

Re: Best Electronic Ignition

NEB made the clutch.
by kommando
Thu Apr 30, 2020 7:43 pm
Forum: Tech
Topic: Leak back,
Replies: 20
Views: 1274
Flag: Ireland

Re: Leak back,

I do this, the pic is of a Norton pump but it works on all Unit Single pumps. I had seen it done by AMR as part of their Norton mods but with O rings but I thought X rings would double the chances of a seal.

Image
by kommando
Thu Apr 30, 2020 7:32 pm
Forum: Tech
Topic: Which tank sealant?
Replies: 16
Views: 3094
Flag: Ireland

Re: Which tank sealant?

The Indians sell a steel tank that is a copy of the sculpted fibre glass tank. As long as you buy from royal choppers or pummy8081 on eBay you should be ok.
by kommando
Thu Apr 30, 2020 7:12 am
Forum: Tech
Topic: B25 piston
Replies: 15
Views: 946
Flag: Ireland

Re: B25 piston

AE stands for Associated Engineering, a group that owned Hepworth & Gandage who made Hepolite pistons.
by kommando
Thu Apr 30, 2020 7:06 am
Forum: Tech
Topic: Hub Powdercoat???s
Replies: 14
Views: 900
Flag: Ireland

Re: Hub Powdercoat???s

Powdercoating works better on cast iron hubs, I never use it on alloy hubs.
by kommando
Mon Apr 27, 2020 8:10 pm
Forum: Tech
Topic: B44 camshaft identification
Replies: 9
Views: 646
Flag: Ireland

Re: B44 camshaft identification

Better low end grunt, lifts the front wheel in 1st and 2nd on mine even with high gearing, runs out of puff about 5k unless you adjust can timing a bit, think you aim for inlet opening mid point of 105 for better top end.
by kommando
Sun Apr 26, 2020 11:16 am
Forum: Tech
Topic: 1969 oil tanks diferences
Replies: 6
Views: 506
Flag: Ireland

Re: 1969 oil tanks diferences

It cures the problem of the filler cap hitting the inner thigh if you straddle the bike to kick, whether BSA had this in mind is anyone's guess.
by kommando
Sat Apr 25, 2020 7:14 pm
Forum: Tech
Topic: 1969 oil tanks diferences
Replies: 6
Views: 506
Flag: Ireland

Re: 1969 oil tanks diferences

Only difference could be neck height as without the fibreglass cover it can be lower as it was in 70 when all models were without fibreglass.
by kommando
Sat Apr 25, 2020 12:40 pm
Forum: Tech
Topic: B44 camshaft identification
Replies: 9
Views: 646
Flag: Ireland

Re: B44 camshaft identification

The early ones had E stamped for Victor Enduro as opposed to the GP cam, after the GP was finished the E was dropped as the production line only worked with 1 B44/B25 cam profile until the B50MX, maybe the V was for the GP, never seen one to know. The WDB40 cam was so different in profile it identif...
by kommando
Fri Apr 24, 2020 9:34 pm
Forum: Tech
Topic: B44 camshaft identification
Replies: 9
Views: 646
Flag: Ireland

Re: B44 camshaft identification

The camwheel is detachable and could be put back on the wrong way round, there is normally on the later cams a V on the other side as the timing mark, so what marks have you got on the other side.
by kommando
Mon Apr 20, 2020 4:04 pm
Forum: Tech
Topic: Leak back,
Replies: 20
Views: 1274
Flag: Ireland

Re: Leak back,

Normal, its called wet sumping, the more you ride the bike the less of an issue. When these bikes were daily riders the problem never came up.
by kommando
Sun Apr 19, 2020 10:50 am
Forum: Tech
Topic: Timing hole B44vs
Replies: 12
Views: 816
Flag: Ireland

Re: Timing hole B44vs

Looking at your first photo of your crank its a B44, the flywheels are of different widths, plus the driveside mainshaft has full length splines not the short splines of the B50, because of the extra driveside main bearing. Now the mainshaft could have been changed but the different flywheel widths ...
by kommando
Sat Apr 18, 2020 9:21 pm
Forum: Tech
Topic: Timing hole B44vs
Replies: 12
Views: 816
Flag: Ireland

Re: Timing hole B44vs

B50 flywheel s are the same width, B44 flywheels have different widths, timing holes are different by a few degrees, both cranks will fit B44 cases.
by kommando
Sat Apr 18, 2020 6:47 pm
Forum: Parts & Bikes wanted
Topic: B50 BIG END BUSH AND OTHER PARTS WANTED
Replies: 2
Views: 274
Flag: Ireland

Re: B50 BIG END BUSH AND OTHER PARTS WANTED

Those are main bearings for sale, what is required is the needle roller big end bearing.
by kommando
Sat Apr 18, 2020 6:44 pm
Forum: Tech
Topic: Timing hole B44vs
Replies: 12
Views: 816
Flag: Ireland

Re: Timing hole B44vs

Unless you have a good way of finding TDC like using a stop against the piston top then you are wasting your time checking at this stage.
by kommando
Fri Apr 17, 2020 11:16 am
Forum: Tech
Topic: Timing hole B44vs
Replies: 12
Views: 816
Flag: Ireland

Re: Timing hole B44vs

No idea but I doubt it, I use a 4mm allen key as it fits the hole and you can accurately get the hole aligned by looking at the key as you slightly move the crank. When the key is perpendicular to the flywheel you are spot on, all the holes I have checked using a crank disc have been accurate so no ...
by kommando
Thu Apr 16, 2020 9:29 pm
Forum: Tech
Topic: Timing hole B44vs
Replies: 12
Views: 816
Flag: Ireland

Re: Timing hole B44vs

That's the timing hole, not like the 650 twin which is a slot.
by kommando
Thu Apr 16, 2020 4:02 pm
Forum: Tech
Topic: Classic Bike Racks B25 B50 TR5T
Replies: 11
Views: 901
Flag: Ireland

Re: Classic Bike Racks B25 B50 TR5T

He is a one man band, not too Internet savy but makes a good product and at a good price. RGM now stock his products for Commando's too and they are one of the better Norton suppliers.