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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.
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 ...
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...
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.
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...
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...
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.
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.
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.
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.
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...
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...
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...
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.I presume the paint thinners used to increase the volatiles is cellulose and not white spirit.
- Fri Dec 14, 2018 5:00 pm
- Forum: Tech
- Topic: Advantages of a Power box/Podtronics over a Zenor Diode
- Replies: 10
- Views: 670
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...
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...
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.
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...
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...
This does not apply to Scotland or the South West where there are no reliably ethanol free petrol of any description.From my research only Esso super unleaded (97RON) has no ethanol
- Fri Nov 30, 2018 5:47 pm
- Forum: Tech
- Topic: A Front Brake Light Switch (By AA Milne)
- Replies: 16
- Views: 816
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.
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...
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 ...
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...
- Thu Nov 15, 2018 6:22 pm
- Forum: Tech
- Topic: B25 Taper Head Set Bearing Advice Please
- Replies: 4
- Views: 348
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"...
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...
- Thu Nov 15, 2018 5:37 pm
- Forum: Tech
- Topic: Putting Boyer in B40, any tips?
- Replies: 10
- Views: 727
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...
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.
- Sun Nov 04, 2018 7:28 pm
- Forum: Project bikes
- Topic: From Bzero to B50
- Replies: 27
- Views: 3175
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.