Search found 36 matches

by Eric Worpe
Sat May 16, 2020 9:22 am
Forum: TABC Chat
Topic: MG TC: Wiring cover (scuttle masking board) dimensions
Replies: 8
Views: 2460

Re: MG TC: Wiring cover (scuttle masking board) dimensions

Agree with Steve, no real advantage in fitting it other than for concourse inspections. Far better to allow the odd viewing of what's behind the dashboard. Also the weight reduction would improve the acceleration :=))
by Eric Worpe
Mon May 04, 2020 12:26 pm
Forum: TABC Chat
Topic: TC front hub query
Replies: 4
Views: 683

Re: TC front hub query

Hi Steve, One possible explanation is that the internal shoulder that locates the outer ball races in the wheel hub is worn, so it is slightly shorter than the spindle's spacer. This would allow some end float of the hub along the spindle which could give the impression of play in the bearing. Is th...
by Eric Worpe
Thu Apr 30, 2020 8:19 am
Forum: TABC Chat
Topic: front wheel bearing assembly
Replies: 7
Views: 833

Re: front wheel bearing assembly

Steve suggests the front wheel end play is 2-3 thou. which seems very difficult to measure, a more useful measurement might be the amount of movement at the wheel's rim. This would be an amplified version of the end play, consequently easier to measure. Roger Furneaux of "Mad Metrics" offers a set o...
by Eric Worpe
Wed Apr 29, 2020 1:31 am
Forum: TABC Chat
Topic: front wheel bearing assembly
Replies: 7
Views: 833

Re: front wheel bearing assembly

Hi Mike, If one is fitting tapered bearings on a replacement stub axle spindle, the spindle journals can be polished with a strip of fine emery paper (400 or 600 grit, oiled) to allow the inner race of the bearings to be a hand push fit. This is especially true of the outer bearing which will need t...
by Eric Worpe
Fri Mar 13, 2020 9:33 am
Forum: TABC Chat
Topic: TC Kingpin replacement
Replies: 8
Views: 1123

Re: TC Kingpin replacement

Hi John, The king pins sets available from most retail outlets are about 0.5 thou. undersized. Doesn't seem much, but the slight rocking of the loose king pin results in the axle eyes becoming worn. This is a difficult and expensive issue to sort out. You cannot rely on the cotter pin countering any...
by Eric Worpe
Wed Jul 17, 2019 8:05 am
Forum: TABC Chat
Topic: XPAG oil pump rebuild
Replies: 7
Views: 1328

Re: XPAG oil pump rebuild

There's a bit more detail on the circlip problem in the web based Totally T-Type 2 Issue 54 June 2019. Try http://ttypes.org/ttt2/xpag-oil-pump-rebuild. From your description you have an end float of just 2 thou. in the shaft, but what is the gap between the pump's body and the skew gear on the driv...
by Eric Worpe
Mon Jun 17, 2019 4:14 pm
Forum: TABC Chat
Topic: XPAG rear oil seal modification
Replies: 16
Views: 2688

Re: XPAG rear oil seal modification

I've noticed on some installations that the lip-seal only just engages with the flange of the crankshaft. It can be so marginal that two spacers are available of 1mm and 1.5mm thick to offset the lip-seal and increase engagement. The downside to such an approach is the need to skim the surface of th...
by Eric Worpe
Wed Jan 30, 2019 4:45 am
Forum: TABC Chat
Topic: Primer paint for a long project
Replies: 9
Views: 3039

Re: Primer paint for a long project

If you wish to protect bare metal panels whilst manhandling them, then consider a rust convertor called Fertan. Although your panels may not be rusty, Fertan will still apply a zinc phosphate layer that protects the panel for many months. When you come to prime the panel, the Fertan film can be easi...
by Eric Worpe
Wed Jan 30, 2019 4:01 am
Forum: TABC Chat
Topic: Lay shaft inspection and replacement
Replies: 7
Views: 1552

Re: Lay shaft inspection and replacement

Tom makes an important observation about caged needle rollers. Early TCs and possibly all TBs used caged layshaft and first motion shaft roller bearings known as Hyatt bearings. These eventually break up as the small nipples that locate the individual rollers in the cage wear away. This can be catas...
by Eric Worpe
Wed Jan 30, 2019 3:42 am
Forum: TABC Chat
Topic: Dynamo oiler
Replies: 4
Views: 1045

Re: Dynamo oiler

Next time you visit your dentist, scrounge some of the felt buffers that are sometimes placed between the teeth and gums. These are about an inch long by 3/8" dia. and provide an effective oil resevoir for the sintered bronze bush.
by Eric Worpe
Sat Mar 05, 2016 2:42 am
Forum: TABC Chat
Topic: A quick thought on retrofitting.
Replies: 4
Views: 2221

Re: A quick thought on retrofitting.

Hi Kam,
The initial surge starter current could be as high as 250 amps, which as previously stated would bring the carbon brushes up to "glow" temperatures. The brushes are only used sporadically, so no great wear takes place especially if your engine "fires up" quickly.
Eric.
by Eric Worpe
Fri Feb 26, 2016 5:34 am
Forum: TABC Chat
Topic: How to adjust TC Brake M/C rod to peddle angle
Replies: 21
Views: 8122

Re: How to adjust TC Brake M/C rod to peddle angle

Thanks also Steve for your photo which comfirms that Pat's push rod was too short, thus forcing the push-rod's adjustment thread to be screwed out so that the ball joint was far below its correct position, resulting in the inclined push-rod. Pat, you've picked up on and solved a particularly tricky ...
by Eric Worpe
Thu Feb 25, 2016 8:16 am
Forum: TABC Chat
Topic: Radiator Slats
Replies: 4
Views: 1972

Re: Radiator Slats

Hi Tim, As no one has come up with a suggestion, you could try maching a groove in some hard wood with a round nosed router bit, place the slat in the groove, place a round metal rod on the slat and press down on the rod to force the slat into the groove and take up the groove's curvature. Just a th...
by Eric Worpe
Wed Feb 24, 2016 5:24 pm
Forum: TABC Chat
Topic: A 5-minute fix. Long Life indicator bulbs (NOT LED)
Replies: 2
Views: 1558

Re: A 5-minute fix. Long Life indicator bulbs (NOT LED)

I don't think there's any need to be concerned about providing adequate field current at start up as the field contacts in the regulator are initially closed, directly coupling the dynamo output to the field winding.
by Eric Worpe
Wed Feb 24, 2016 9:53 am
Forum: TABC Chat
Topic: How to adjust TC Brake M/C rod to peddle angle
Replies: 21
Views: 8122

Re: How to adjust TC Brake M/C rod to peddle angle

Afternoon Pat, There should be a return spring on the brake pedal ( in addition to the brake switch spring ), which ought to return the pedal so that it comes to rest on a stud, defining the position of the pedal at rest. The push-rod adjustment is then altered so that about 1/2" of play of the foot...
by Eric Worpe
Wed Feb 24, 2016 7:04 am
Forum: TABC Chat
Topic: 9 Terminal Lucas Regulator Replacement Project
Replies: 27
Views: 8621

Re: 9 Terminal Lucas Regulator Replacement Project

That over 50% of these 70 year old cars are still around is due partly to their charming simplicity. In the absence of advanced electronics, the generator control used an ingenuous electro-mechanical contraption that has proved to be robust. Although I'm involved in electronics , I have a great resp...
by Eric Worpe
Wed Feb 24, 2016 5:20 am
Forum: TABC Chat
Topic: How to fix leak at Banjo fitting on brake M/C ?
Replies: 2
Views: 1460

Re: How to fix leak at Banjo fitting on brake M/C ?

Hi Pat, Old copper washers will have work hardened and thus cannot deform to suit the sealing surfaces. The trick is to heat the copper washers up to bright red heat, which should anneal them. After heating they can be plunged into cold water to limit any further oxidization or just left to cool nat...
by Eric Worpe
Wed Feb 24, 2016 4:47 am
Forum: TABC Chat
Topic: How to adjust TC Brake M/C rod to peddle angle
Replies: 21
Views: 8122

Re: How to adjust TC Brake M/C rod to peddle angle

Hi Pat, I noted that you found the longer push-rod was a better fit; from your photo it seemed that the adjustment screw was wound down excessively, resulting in the push-rod being angled to the horizontal. Why not consider using the push-rod that gives the best horizontal alignment?
Regards, Eric.
by Eric Worpe
Tue Feb 23, 2016 1:17 pm
Forum: TABC Chat
Topic: ignition condenser alternative?
Replies: 12
Views: 5722

Re: ignition condenser alternative?

Ceramic chip capacitors, unprotected in such a harsh environment and having to cope with peak currents as high as 3 amps may be working outside their comfort zone. Polypropyline capacitors are specified for pulse discharge conditions and are reliable. Potting them inside a copper tube enables not on...
by Eric Worpe
Tue Feb 23, 2016 12:58 pm
Forum: TABC Chat
Topic: How to adjust TC Brake M/C rod to peddle angle
Replies: 21
Views: 8122

Re: How to adjust TC Brake M/C rod to peddle angle

Hi Pat, The push-rod should be adjusted until there's about 1/2" free play at the pedal before the piston starts to be operated. At this point the "ball" on the articulated joint should be slightly forward of a vertical line that passes through the centre of the pedal's bearing shaft. The "ball" wil...