Search found 1568 matches

by kommando
Tue Jan 22, 2019 12:45 pm
Forum: Tech
Topic: B25 oil pump drive spacer
Replies: 6
Views: 184
Flag: Ireland

Re: B25 oil pump drive spacer

Depends upon the thickness of the shim, 10 thou could rip up easily, 25 thou would be ok. A bodge is to tap one of the bushes in to take up the slack but it can always them move back in unless the gap is filled.
by kommando
Mon Jan 21, 2019 4:54 pm
Forum: Tech
Topic: B25 oil pump drive spacer
Replies: 6
Views: 184
Flag: Ireland

Re: B25 oil pump drive spacer

Aim for 5 to 10 thou, if possible fit the shim behind the flange of the cam bush so it is not rubber against.
by kommando
Sun Jan 20, 2019 10:37 pm
Forum: Tech
Topic: B25 oil pump drive spacer
Replies: 6
Views: 184
Flag: Ireland

Re: B25 oil pump drive spacer

When the crank had 2 ball bearing mains the crank was located on the driveside and the timing side floated, no spacer needed. Once a roller went on the driveside then the location of the crank moved to the timing side so the spacer was fitted. If you have fitted 2 ball bearing mains as per 68 stick ...
by kommando
Sat Jan 19, 2019 4:48 pm
Forum: Tech
Topic: T25 SS Rear Wheel Spokes
Replies: 3
Views: 133
Flag: Ireland

Re: T25 SS Rear Wheel Spokes

If you are going stainless then try to go 1 gauge thicker if possible, stainless is weaker so the thicker gauge is good insurance. From Draganfly 4 37-3724 Spoke & nipple 5-3/4x8x45 10 1973-74 TR5T 5 37-3725 Spoke & nipple 5-7/8x8x Double bend 10 1973-74 TR5T 6 37-3726 Spoke & nipple 6-7/8x8x45 Long...
by kommando
Sun Jan 13, 2019 11:00 am
Forum: Tech
Topic: B44 Sump Ball Valvr
Replies: 2
Views: 134
Flag: Ireland

Re: B44 Sump Ball Valvr

It's captive in the alloy housing so I for one have never measured it. For it to be missing the housing would have to be extracted, retaining wire removed, ball removed and then the housing reinserted. There is no spring so the ball just floats around.
by kommando
Tue Jan 08, 2019 12:55 pm
Forum: Tech
Topic: B44 Oil consumption
Replies: 29
Views: 524
Flag: Ireland

Re: B44 Oil consumption

You need to force the rings out onto the bore so the honing roughness wears the rings to the shape of the bore, vary the throttle opening and short bursts of full throttle at mid to high revs will not do harm, the finer the honing the longer it takes and the greater risk of glazing the bore which me...
by kommando
Tue Jan 08, 2019 10:51 am
Forum: Tech
Topic: B44 Oil consumption
Replies: 29
Views: 524
Flag: Ireland

Re: B44 Oil consumption

If you can choose then 3 part ring over single ring on oil control.
by kommando
Mon Jan 07, 2019 6:34 pm
Forum: Tech
Topic: B44 Oil consumption
Replies: 29
Views: 524
Flag: Ireland

Re: B44 Oil consumption

Introducing oil and getting an increase in compression tells you the ring gaps are bigger than required, the oil seals the gaps temporarily increasing compression, you have new rings so small gaps so what is the oil telling you. If the rings are not bedded in properly the rings are already oily as t...
by kommando
Mon Jan 07, 2019 1:40 pm
Forum: Tech
Topic: B44 Oil consumption
Replies: 29
Views: 524
Flag: Ireland

Re: B44 Oil consumption

For cast iron rings which yours will be the recommendation is a 150 grit, don't know much about 00 grit but it googles as a fine grit which is wrong for cast iron. New rings and rehone with 150 grit once you take the head off to confirm.
by kommando
Mon Jan 07, 2019 10:19 am
Forum: Tech
Topic: B44 Oil consumption
Replies: 29
Views: 524
Flag: Ireland

Re: B44 Oil consumption

What oil did you use for the running in, what grit honing stone was used, how many miles has it done, when you first started it how long did the engine run before you got it out on the road.
by kommando
Tue Jan 01, 2019 9:24 am
Forum: Tech
Topic: New B40 oil leak.
Replies: 25
Views: 845
Flag: Ireland

Re: New B40 oil leak.

Clean thoroughly, apply talcum powder, run engine and observe.

Happy New Year
by kommando
Sat Dec 29, 2018 2:49 pm
Forum: Tech
Topic: New B40 oil leak.
Replies: 25
Views: 845
Flag: Ireland

Re: New B40 oil leak.

On an F conversion I used the unused distributor hole as an untimed outlet but with a reed one way valve in the connected pipe. No leaks was the result.
by kommando
Fri Dec 28, 2018 2:05 pm
Forum: Tech
Topic: New B40 oil leak.
Replies: 25
Views: 845
Flag: Ireland

Re: New B40 oil leak.

Doctors, cure or kill they get paid anyway ;)
by kommando
Thu Dec 27, 2018 7:42 pm
Forum: Tech
Topic: New B40 oil leak.
Replies: 25
Views: 845
Flag: Ireland

Re: New B40 oil leak.

Who knows, never got it to work for very long and gave up despite tapping new balls onto the seat etc. The other options are the dreaded tap in the feed line, a Velo type auto anti drain valve or to drain the oil tank before putting away.
by kommando
Thu Dec 27, 2018 5:53 pm
Forum: Tech
Topic: New B40 oil leak.
Replies: 25
Views: 845
Flag: Ireland

Re: New B40 oil leak.

The anti wet sumping valve is inside the crankcase on the timing side under the bush behind a grub screw, a complete strip down to get to it. You will need a new ball and spring and even then it may not work.
by kommando
Sun Dec 23, 2018 5:55 pm
Forum: Tech
Topic: B44 Oil pressure
Replies: 2
Views: 321
Flag: Ireland

Re: B44 Oil pressure

The B44 has a roller big end, it has large gaps for the oil to flow so produces no back pressure, so oil pressures are meaningless, 2 psi is plenty for this setup, the 25 psi on a cold start is purely from the thick oil and the friction from the oil galleries. The B25 had a low oil pressure light, i...
by kommando
Tue Dec 18, 2018 2:25 pm
Forum: Tales Of Woe
Topic: Breakdown...
Replies: 8
Views: 741
Flag: Ireland

Re: Breakdown...

There's oil coming from the gear shift Sounds like the small oil return hole in the inner timing cover is blocked so breathed out oil instead of draining back into the crankcase gets stuck between the inner and out timing covers, once it gets as high as the gear lever it leaks out. If it gets highe...
by kommando
Mon Dec 17, 2018 1:51 pm
Forum: Project bikes
Topic: Typhoon BX60V
Replies: 39
Views: 3381
Flag: Ireland

Re: Typhoon BX60V

I though the disc yokes were all steel.... I have a set of Y*maha R6 5EB yokes for 43mm stanchions and both yokes are alloy and the stem is steel, lower yoke is an interference fit on the steel stem with a circlip as locator & secondary retainer. Will be fitting them to a Commando frame using speci...
by kommando
Sat Dec 15, 2018 10:24 pm
Forum: Tech
Topic: B50s and modern fuel
Replies: 28
Views: 1639
Flag: Ireland

Re: B50s and modern fuel

I presume the paint thinners used to increase the volatiles is cellulose and not white spirit.
I just bought the lowest price 5l can of thinners on ebay, it has toluene and a few other volatile contents and dissappears if you leave the top off.
by kommando
Fri Dec 14, 2018 5:00 pm
Forum: Tech
Topic: Advantages of a Power box/Podtronics over a Zenor Diode
Replies: 10
Views: 670
Flag: Ireland

Re: Advantages of a Power box/Podtronics over a Zenor Diode

With a new VR the charging voltage will not go as high as some Zeners and they are more efficient so more of the alternator output can go to the battery, what this is I don't have figures for. So in the end not enough to justify binning a good zener but good for replacing a bad zener as new zeners a...
by kommando
Sat Dec 08, 2018 7:25 pm
Forum: Tech
Topic: Chainguard?
Replies: 4
Views: 432
Flag: Ireland

Re: Chainguard?

by kommando
Fri Dec 07, 2018 6:23 pm
Forum: Tech
Topic: Chainguard?
Replies: 4
Views: 432
Flag: Ireland

Re: Chainguard?

The last maker I know of has stopped making chainguards, they were CMF Engineering. Their moulds for side panels etc are now for sale. http://www.cmftrailers.co.uk/classic-bike-parts.html There is someone in the US doing them but it would need a bit of digging to get the info for you. Found it Peter...
by kommando
Wed Dec 05, 2018 7:58 pm
Forum: Project bikes
Topic: Typhoon BX60V
Replies: 39
Views: 3381
Flag: Ireland

Re: Typhoon BX60V

Try the CDS again but with the steel on the OD of the bend red hot, it should then hopefully stretch and not crack, other option is two 30 degree bends close to each other if there is space.
by kommando
Tue Dec 04, 2018 4:56 pm
Forum: News
Topic: Fury
Replies: 2
Views: 276
Flag: Ireland

Re: Fury

As Ken Sprayson also says he is solely responsible for fixing the Widowmaker Norton Commando frame and that he made more from correcting the Italian frames Norton sourced from Verlicchi who also made Ducati's frames I would take this statement with a bucket of salt. You may recall an article I wrote...
by kommando
Mon Dec 03, 2018 9:27 pm
Forum: Tech
Topic: C15 G Engine Castings
Replies: 1
Views: 277
Flag: Ireland

Re: C15 G Engine Castings

No is the simple answer, yes if you open out the hole for the barrel, relocate the barrel stud holes after welding up the old stud holes, check the deck height and adjust, machine the bottom of the cam follower tunnel to allow followers to move higher. No doubt I have missed a couple more wrinkles s...
by kommando
Mon Dec 03, 2018 10:20 am
Forum: Tech
Topic: B50s and modern fuel
Replies: 28
Views: 1639
Flag: Ireland

Re: B50s and modern fuel

It is Grangemouth refinery in Scotland that is the issue, no doubt the SW has a similar monopoly refinery.
by kommando
Sun Dec 02, 2018 10:59 am
Forum: Tech
Topic: B50s and modern fuel
Replies: 28
Views: 1639
Flag: Ireland

Re: B50s and modern fuel

From my research only Esso super unleaded (97RON) has no ethanol
This does not apply to Scotland or the South West where there are no reliably ethanol free petrol of any description.
by kommando
Fri Nov 30, 2018 5:47 pm
Forum: Tech
Topic: A Front Brake Light Switch (By AA Milne)
Replies: 16
Views: 816
Flag: Ireland

Re: A Front Brake Light Switch (By AA Milne)

The parts books show one for the 69 Shooting Star, and mine has the cable with switch, its design means you lose some of the handlebar lever movement from operating the brake lever so it is not always replaced when new cables are fitted.
by kommando
Fri Nov 30, 2018 12:49 pm
Forum: Tech
Topic: B50s and modern fuel
Replies: 28
Views: 1639
Flag: Ireland

Re: B50s and modern fuel

Ethanol is an issue but even if you can find Ethanol free fuel the recipe varies from summer to winter and also year to year as regulations change. In particular the % volatiles has dropped over the years, needed by carbs for cold starting but not for fuel injection. The current lower % is what caus...
by kommando
Sat Nov 24, 2018 9:13 am
Forum: Tech
Topic: B40 compression ratio?
Replies: 2
Views: 294
Flag: Ireland

Re: B40 compression ratio?

Of its not pinking its not too high. The thin gaskets are made wrong and are wrong for both B40 and B44.
by kommando
Sat Nov 24, 2018 9:11 am
Forum: Tech
Topic: B40 compression ratio?
Replies: 2
Views: 294
Flag: Ireland

Re: B40 compression ratio?

Double post
by kommando
Fri Nov 23, 2018 5:38 pm
Forum: Tech
Topic: B25 carrillo
Replies: 15
Views: 1123
Flag: Ireland

Re: B25 carrillo

Well talking through my rectum, filters 1 and 2 are as much use as taste buds on a rectum, they are just tea leaf strainers and I do not brew tea in my engine oil.
by kommando
Tue Nov 20, 2018 11:10 am
Forum: Tech
Topic: B25 carrillo
Replies: 15
Views: 1123
Flag: Ireland

Re: B25 carrillo

If you ask the supplier for a picture of the stamping on the back of the bearing and then post it here then I can try and say what material it is. Current Triumph Unit 500 shells made for Velocette Motorcycle Company Ltd run by Matt Holder are made from Al/Sn and this is the best current option but ...
by kommando
Thu Nov 15, 2018 7:39 pm
Forum: Tech
Topic: B25 carrillo
Replies: 15
Views: 1123
Flag: Ireland

Re: B25 carrillo

Never seen a direct quote form one of the original engine designers as to why, plenty of guesses from later interested parties. The one I think is the reason, is that it promotes oil flow on the driveside con rod so creating the right conditions in both bearings to maintain the oil film, this fits t...
by kommando
Thu Nov 15, 2018 6:22 pm
Forum: Tech
Topic: B25 Taper Head Set Bearing Advice Please
Replies: 4
Views: 348
Flag: Ireland

Re: B25 Taper Head Set Bearing Advice Please

Timken 15520 with the od of the outer ground down from 2.25 to 2.125, the box has the inner in it but it could be one of 6 so will check again tomorrow. https://cad.timken.com/group/related-products-timken-272mk-xz/tapered-roller-bearings---single-cups---imperial Update Inner is 15580 with a 1 1/16"...
by kommando
Thu Nov 15, 2018 5:54 pm
Forum: Tech
Topic: B25 carrillo
Replies: 15
Views: 1123
Flag: Ireland

Re: B25 carrillo

Never fit BSA NOS shells, they are whitemetal and next to useless. Shells are installed with an oversize length of a few thou which is called crush height, as the con rod is torqued up the shell is forced into matching the shape of the much thicker rod housing and this then grips the shell and stops...
by kommando
Thu Nov 15, 2018 5:37 pm
Forum: Tech
Topic: Putting Boyer in B40, any tips?
Replies: 10
Views: 727
Flag: Ireland

Re: Putting Boyer in B40, any tips?

You may have too much retard, before ATD units when the ignition advance was manual the starting drill was to have the advance lever 1/2 way between Fully Advanced and Fully Retarded. When you have an EI fitted with idle stabilisation included then they work by advancing the ignition as the revs dro...
by kommando
Thu Nov 15, 2018 11:36 am
Forum: Tech
Topic: B25 Taper Head Set Bearing Advice Please
Replies: 4
Views: 348
Flag: Ireland

Re: B25 Taper Head Set Bearing Advice Please

I will post the numbers later but you will need access to a cylindrical grinder to finish the OD to size.
by kommando
Tue Nov 06, 2018 9:45 am
Forum: Off topic
Topic: Insurance
Replies: 2
Views: 288
Flag: Ireland

Re: Insurance

PJ +1, no silly renewal hikes where you need to ring to get it magically dropped to last year's level, both Carol Nash and Footman James do this hoping you do not notice. Always happens once sold to private equity investment.
by kommando
Sun Nov 04, 2018 7:28 pm
Forum: Project bikes
Topic: From Bzero to B50
Replies: 27
Views: 3175
Flag: Ireland

Re: From Bzero to B50

House of kolor seen to have all the Flamboyant colours available at some point, they must have been the original inspiration, but BSA Triumph got their paint from ICI and Carrs, wonder if they had a licencing deal going.