Final Vehicle Record- Rear End Ratio PD 4104

[siberyd]

Today I got my Final Vehicle Record from the Ohio Museum of Transportation. Under Axle-Rear Ratio
It has  4  1/8:1

Can someone translate this for me.

Also options on my bus included:
4 tinted glass panels in roof.
Ether capsule type cold weather starting aid
Provide PA and 4 speakers
Reading lights and panels for special seating
Lower interior side wall for special seating
Check valve mounted between first and second tank.
Fuel tank gauge at filler neck.
Additional insulation blanket between engine-
compartment and rear lounge seat.
All this for a California bus.

[Gerry4104]

I am curious as to what the Fuel guage is about....

I hate not haveing a fuel guage in a vehicle..its just stupid...LOL   

[siberyd]

The no fuel gauge was the norm in older transit buses too.
Gerry get yourself a flexible wood stick to keep track of fuel. It is about 5 gallons per inch

[RJ]

Sib -

4 1/8:1 rear axle ratio translates to 4.125:1, which was stock.  Bevel gear ratio on the '04 was 1:1, so your overall final drive is the same as the rear axle.

Starting with the 4104, here's the breakdown for the GMCs:

6 cyl 35' = (manual gearbox) x (1:1 bevel gear) x (4.125:1 rear axle gear) = 4.125:1 overall final drive.

8 cyl 35' = (manual gearbox) x (0.808 bevel) x (4.125:1 rear axle) = 3.333: 1 overall.

8 cyl 40' = (manual gearbox) x (0.808 bevel) x (4.375:1 rear axle) = 3.535:1 overall.

8 cyl 35' = (V-730 auto) x (0.875 bevel) x (4.125: 1 rear axle) = 3.609:1 overall.

8 cyl 40' = (V-730 auto) x (0.875 bevel) x (4.375:1 rear axle) = 3.828:1 overall.


Glad you ordered a FVR from OMoT, interesting trivia, eh?  Considering it was a Curry Co. coach initially, I'm not surprised by the glass roof panels option - perfect for sightseeing in Yosemite Nat'l Park!

Gerry -

Fuel gauges were an option on GMCs.  Some were mounted inside the fuel filler door with a "momentary on switch" (you had to hold on to get a reading), later models (4108 & 4905) were on the dash.  The one inside the fuel filler was a simple black/white Stewart Warner w/o their logo.  There is a covered cut-out on the top of the tank for one, all you need are the parts.

During their era of popularity, most coaches in revenue service never strayed very far from the garage (local work), line-haul (Greyhound) rarely went more than 250 miles before hitting a terminal with fuel, and long-distance charters often only went 500 miles before looking for fuel (good rule of thumb, btw.)

FWIW & HTH. . .

[TomC]

While my transit is an AMGeneral, when I dropped the tank to inspect it, it had two 5 screw round plates in the top of the tank.  One I used for a standard 5 hole fuel gauge sender and the other I modified for my genset pickup-hence I didn't have to cut any holes.  Maybe your tanks are built the same.  Good Luck, TomC