Search found 53 matches

by timberstone
Sat Jan 11, 2020 4:36 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Re: Tire circumference with the illusion of speed and handling

Put new larger tires on the rear axle: Excelsior All Black 525/550 – 19 with circumference of 30-1/2 inches compared to original Dunlops of 27-1/2 inches. Now having driven a few miles, and not changing the differential ratio, the differences noted are: With the increase in tire circumference, the “...
by timberstone
Sat Jan 11, 2020 2:56 pm
Forum: TABC Chat
Topic: Running Board and Tire Tread Gap Distance from Rear Wing
Replies: 6
Views: 289

Re: Running Board and Tire Tread Gap Distance from Rear Wing

With new tires, of larger circumference, the tread gaps between the rubber and rear fender opening seem not to have changed much, but the larger circle of the tire seemed to make the wheel well more cramped and increases the difficulty with removing and replacing the wheel. Rear Fender Left Side Gap...
by timberstone
Mon Jan 06, 2020 6:26 pm
Forum: TABC Chat
Topic: Altette Horns
Replies: 6
Views: 2407

Re: Altette Horns

From TC's Forever (p 203): "The Lucas Altette HF1234 horn appears to have come, like most other TC equipment, in two varieties. Early ones have a solid round body [as pictured below - from the back] IMG_2957.JPG while later ones sported a sizeable chunk out of the top of the body [as pictured in the...
by timberstone
Thu Jan 02, 2020 2:41 pm
Forum: TABC Chat
Topic: Running Board and Tire Tread Gap Distance from Rear Wing
Replies: 6
Views: 289

Re: Running Board and Tire Tread Gap Distance from Rear Wing

These tires are the "Poster Children" for weather checked and dry rotted examples of the original Dunlop tire species of prehistory. Yes, it would be easier to get these off and on if at least one of the wings were a bit more outboard, but I wanted to be sure of the amount of set out for, or how muc...
by timberstone
Wed Jan 01, 2020 2:51 pm
Forum: TABC Chat
Topic: Running Board and Tire Tread Gap Distance from Rear Wing
Replies: 6
Views: 289

Running Board and Tire Tread Gap Distance from Rear Wing

Need consensus on whether there is a TC "Factory Original" value for, and if so how much, gap there is between tire tread and rear wing (fender) front opening. Stated another way, but with same result, what is the "set out" measurement of the rear wing from the running board? Taking some measurement...
by timberstone
Sat Dec 21, 2019 6:25 am
Forum: TABC Chat
Topic: TC9849 EXU Restoration
Replies: 13
Views: 806

Re: TC9849 EXU Restoration

Are you thinking about doing any frame reinforcement with welding and plates in places that are suggested by Mike Sherrell in "TC's Forever"? Regrets that we did not do those welding modifications for Boxley's frame, when it was apart for sandblasting and powder coating, even though there had been n...
by timberstone
Thu Dec 19, 2019 5:15 pm
Forum: TABC Chat
Topic: Green Gripper Brake Lining
Replies: 3
Views: 211

Re: Green Gripper Brake Lining

The brake shoes, which we recently received from Abingdon Spares, appear to be woven - as opposed to the generic composites of densely packed artificial and metallic material that come from commercial suppliers such as Moss Motors and the local auto parts store. That material is very resistant to we...
by timberstone
Wed Dec 18, 2019 5:38 pm
Forum: TABC Chat
Topic: Second gear from standstill
Replies: 6
Views: 287

Re: Second gear from standstill

Yes, Steve, I sure hope your wished for combination of tires and differential will not decrease hill climbing ability. Maybe you have increased the horsepower of your XPAG? Those Firestone tires are close in listed diameter (at 29.8") and circumference (at 93.62") to the Excelsior model that I am fa...
by timberstone
Tue Dec 17, 2019 6:22 pm
Forum: TABC Chat
Topic: Second gear from standstill
Replies: 6
Views: 287

Re: Second gear from standstill

Tom, thanks for some pointers. Question where to get rear differential gears so reasonably that will fit properly. Noted a few suppliers in UK for the Morris Minor and Spridget differentials, but seems a welter world to investigate. Found a posting by Robert Grunau in Ttalk.info for the following: "...
by timberstone
Tue Dec 17, 2019 6:22 pm
Forum: TABC Chat
Topic: Second gear from standstill
Replies: 6
Views: 287

Re: Second gear from standstill

Tom, thanks for some pointers. Question where to get rear differential gears so reasonably that will fit properly. Noted a few suppliers in UK for the Morris Minor and Spridget differentials, but seems a welter world to investigate. Found a posting by Robert Grunau in Ttalk.info for the following: "...
by timberstone
Mon Dec 16, 2019 4:56 pm
Forum: TABC Chat
Topic: Second gear from standstill
Replies: 6
Views: 287

Second gear from standstill

We posted the earlier Chat about tire diameter and top speed, but now wish to question the opposite end of the speed range: With the original rear differential gear ratio of 5.125 to 1 and Dunlop original tires of 27" to 27-1/2" diameter, wondering whether any excessive wear of gears or clutch will ...
by timberstone
Thu Dec 12, 2019 5:41 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Re: Tire circumference with the illusion of speed and handling

Since looking again at the original Dunlops on the rear wheels of MGTC0820, there was found to be significant cracking of the rubber in the sidewalls. This is called “weather checking” also called “dry rot” and occurs when the rubber has been dried out by time. So these tires need to be replaced all...
by timberstone
Wed Dec 11, 2019 5:10 pm
Forum: TABC Chat
Topic: To spray or not to spray
Replies: 4
Views: 482

Re: To spray or not to spray

Many times we have seen the attempt to use paint to cover a “multitude of sins,” but it usually does not work. You say that the present paint is cracking in places. This probably means that in order to do the paint job correctly, that ALL of the paint should be removed down very close the metal. Thi...
by timberstone
Thu Dec 05, 2019 7:15 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Re: Tire circumference with the illusion of speed and handling

Thank you Duncan M. for warning me about the tires not being capable of fitting into the wheel wells when mounted on the wheels. No, we do not have the wide rim wheels from Bob Gruneau. I do remember having to wrestle with getting the wheels mounted when the Model A Ford tires were in use. I did not...
by timberstone
Tue Dec 03, 2019 5:36 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Re: Tire circumference with the illusion of speed and handling

Yes, it is hard to get information about tire circumferences. The measurement usually must be derived mathematically from looking at the "overall" tire diameter -- but even that information is not always available, or perhaps totally dependable. And then, like dummy me, the wrong formula can be appl...
by timberstone
Mon Dec 02, 2019 7:15 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Re: Tire circumference with the illusion of speed and handling

Yes, agreed that the wrong formula was used to calculate tire circumference. Therefore the differences are not as great, but are really as observed in Steve W's comment. The order has been placed for tires with diameter of 31.40 inches, and using the proper formula, will equal circumference of 98.65...
by timberstone
Sat Nov 30, 2019 4:55 pm
Forum: TABC Chat
Topic: Tire circumference with the illusion of speed and handling
Replies: 15
Views: 898

Tire circumference with the illusion of speed and handling

The actual diameter of original unworn Dunlop 19" tires for the MGTC is estimated around 27.5 inches. In the past, for economic reasons, we have used 19" tires that were meant originally for the Ford Model A. These tires fit well but had an actual diameter estimated around 32 inches, when not worn. ...
by timberstone
Fri Nov 22, 2019 6:50 pm
Forum: TABC Chat
Topic: MG TC8204 - Front axle beam and Mike Sherrell's remark
Replies: 4
Views: 376

Re: MG TC8204 - Front axle beam and Mike Sherrell's remark

The the 3 TC's that we are very familiar with all had the axle lettering for determination of the proper castor/caster of the kingpin eyes, facing to the rear. This is illustrated in Mike Sherrell's book TC's Forever at page 111 regarding the front axle, as well as being mentioned on page 113. His q...
by timberstone
Sun Nov 17, 2019 6:35 pm
Forum: TABC Chat
Topic: TC EXU Turn Indicators on older TCs
Replies: 4
Views: 355

Re: TC EXU Turn Indicators on older TCs

Then we will probably do the EXU modification and just use bright incandescent bulbs in the lamps -- and not have to use LEDs with the relay modifications those entail.
Octagonally yours, Boxley (Robert and TC0820)
by timberstone
Sun Nov 17, 2019 6:30 pm
Forum: TABC Chat
Topic: TC Steering box
Replies: 29
Views: 4502

Re: TC Steering box

Follow up report on the conversion to upgraded steering box: There have been some developments since replacement of the original Bishop Cam steering box (which even had the Tompkins Kit properly machined) with a newly machined version of some other (perhaps VW?) steering box. We have toured and have...