It’s open and I’ve counted teeth. Lets do a bit of calculating before continuing on. Count six pairs of gears. From left to right they are: input to layshaft gear set, 3rd, 2nd, 1st, reverse, and fifth. Note that there is no fourth gear. The fourth gear selector, far left, simply locks the input shaft to the output shaft for a 1:1 ratio. IE, remove the layshaft (bottom) and you can still activate fourth gear.
On to the Math.
- INPUT/LAYSHAFT Ratio = 1.43:1. (Input shaft spins 1.43 times for every rotation of the Layshaft)
- 1st Gear Ratio = 2.50:1 (Layshaft spins 2.5 times for every rotation of output shaft)
- 2nd Gear Ratio = 1.41:1
- 3rd Gear Ratio = 0.96:1
- 5th Gear Ratio = 0.63:1
Multiply all this together and you get the stock T50 ratios of: 3.587, 2.022, 1.384, 1 and 0.861. Now the next question is… if you have an unlimited supply of stock T50 gears, and any layshaft gear can go in any position on the layshaft, and any mainshaft gear can go in any position on the mainshaft, then what ratios are possible??
This is entirely hypothetical of course, because the gears do not just swap places, but some of them certainly could with minor machine work.
BLAM!? Maybe next time.
good reading material. either you miscount the fifth gearing or it’s mathematical roundup, the fifth ratio is a bit off. it should be 0.861 or at least that’s what this brochure dictates
this brochure..
Your right… I miscounted. 21teeth on the mainshaft, not 22. That actually makes a big difference to what is theoretically possible.
Wow… and I had almost given up. Stay tuned.