• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

Calculating front bearing shims on the bench

steveg

Yoda
Gold
Country flag
Offline
I used these measurements to calculate I need .014" of shims to get the perfect fit.

Will see how it works in practice this weekend.

AxleBearingBenchSetup_med.jpg
 
Country flag
Offline
There's a lot of variance due to the 'slop' of the bearing rollers in their cage. Usually takes 0.030" of shims, give or take (there are exceptions as noted by others). My guess is your hub will be locked up tight with 0.014" of shims. Please let us know how it goes.
 
OP
steveg

steveg

Yoda
Gold
Country flag
Offline
Ha, Ha - No Nobel Prize after all for my little science project.
One side took .055" of shims and the other took .041". This with new bearings, light oil, and the castellated nut tightened as tight as I could get it. I used the entire Moss kit except for 2@ .003 shims.

Interesting to me is the way the nut works in combination with the two cotter-pin holes which are at 90 degrees. The thread is 16 tpi; one full turn is .0625"; moving from one slot on the nut at one hole 1/12 of a turn until the other hole lines up. That's .005". Therefore when it's too tight and you back the nut off until the bearings rotate easily but without slop, you can theoretically guess the thickness of shims to be added by the amount of rotation of the nut. In practice, though, that's not very accurate. I like the process of putting a lot of shims in then taking them out better than starting off tight as I did and adding shims.
 

Rob Glasgow

Jedi Knight
Country flag
Offline
I've used their poka-dot paint for years with very good results. Most can't tell the difference between their single can solution and a professional job. Wish they would expand the color offerings.....
 

Keoke

Great Pumpkin
Country flag
Offline
I used these measurements to calculate I need .014" of shims to get the perfect fit.

These dimensions may work for you .However. the machieng tolerances of the distance piece was not precise so variations will be seen car to car.
Consequently,others will be required to follow the book,s instructions to be sure theirs is correct.
 
Similar threads
Thread starter Title Forum Replies Date
RAC68 Calculating Front Hub End-Play Austin Healey 32
56HealeyDan 100-4 Front Crankshaft Seal Austin Healey 2
AngliaGT 1997 Miata - Anyone Have a Picture on How to Mount the Front License Plate Bracket? Other Cars 12
mctriumph For Sale front apron 57 Tr3 Triumph Classifieds 0
71TR6 TR2/3/3A TR3A Front Bumper Mount Triumph 11
1 TR2/3/3A Rimmer Brothers Replacement Front Wing Quality? Triumph 8
Carlbanan56 MGB Front hub MG 4
F For Sale E Type Series II front and rear bumpers good condition Jaguar Classifieds 0
J MGB Front Wheel Bearings. Re-grease or replace? MG 19
scottkilpatrick TR4/4A Front Brakes - Basics for Pads Triumph 11
C MGB-GT MGB-GT Front Ride Height MG 0
C MGB-GT Front Ride Height MG 0
J For Sale Bilstein Front Shocks for Jaguar E-Type 727-498-6493 Jaguar Classifieds 0
J TR2/3/3A Mystery knocking sounds at front wheel Triumph 11
E Wanted 1963 Healey 300 mark 2 front grille wanted Austin Healey Classifieds 0
K TR2/3/3A Front brake hub removal to access Vertical Link bolts(screws) Attached pictures. Triumph 1
K TR2/3/3A How to remove the front brake hub from the brake disc? Triumph 11
AUSMHLY Front Wheel Spin Drag Austin Healey 6
T TR2/3/3A Looking for a TR3A front bumper Triumph 6
mctriumph TR2/3/3A Front Suspension upgrades for the 59 Triumph 10
vpanza Wanted TR3 FRONT backplates needed Triumph Classifieds 2
K TR2/3/3A Rear tire pressure when there is an anti roll bar at the front of the car? Triumph 1
CARSINC For Sale Sprite Front Wire Wheel Hubs Spridgets Classified 0
bighealeysource Front Brake Adjusters Austin Healey 0
L Wanted right front turn signal 1975 TR6 Triumph Classifieds 2
G For Sale NEW PHOTOS: Triumph TR3 Chassis Frame + Front Suspension, Fits TR2,TR3,TR3A,TR3B Triumph Classifieds 1
TR3Acustodian TR2/3/3A Replacing "H" front badge Triumph 11
G Rebuilding Front Seats Austin Healey 4
drooartz MGB Front suspension rebuild is next MG 57
Joel Lester TR2/3/3A What final front suspension torque settings needed? Triumph 7
H TR4/4A Advise asked for front repair Triumph 1
A BN7 Front Hub Stud Nuts Austin Healey 5
P 100/6 Front Wheel Alignment Austin Healey 10
Prof. T Wanted 1974 - TR 6 Front Chrome License Plate Holder Triumph Classifieds 1
S Wanted BT7 Front Passenger Side Seat Pan Austin Healey Classifieds 0
S For Sale Triumph TR 2-3 Front Left Fender Triumph Classifieds 2
B Wanted Bugeye front bonnet fender mirror like this Spridgets Classified 5
P MGB 1974 MGB front spring length. MG 0
B TR4/4A Spax, Gaz and Koni on Front Triumph 12
G TR2/3/3A TR3A Front Sway Bars - Choice? Triumph 3
K TR2/3/3A TR3 front air vents mounted under the grill...seen on race cars for better air flow to radiator. Triumph 1
G MGB '71 MGB Front End Rebuild MG 2
S BJ8 Front Side Lamp/Turn Signals Austin Healey 1
Popeye TR4/4A Latest thoughts on TR4A front springs? Triumph 8
X Front End Alignment Austin Healey 14
FrogPond "57 100E Front Hubs on E494A Spindles ? Other British Cars 6
A SOLD!! TR3A Girling Type A brake caliper for right front Triumph Classifieds 0
M Front caliper rebuild 1970 Series 2 E-Type Jaguar 0
K TR2/3/3A Oil leaks at two front cylinder head studs? Triumph 3
craigshealey3000 Front End Shake Austin Healey 31

Similar threads

Top