KR and XLR gearbox ratios, late 1960’s:

4 sets of clutch gears, 3 sets of 1^st gear, 2 sets of 2^nd gears and 2 sets of 3^rd gears to give the following combinations.

The sets identified by a letter in the last column are the “preferred” factory sets

Page 2:

			Countershaft 3rd gear	25
			35709-54A	"K"
			23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58	35305-56
		20 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	26
		35296-56	35712-66R
		23 teeth	24 teeth
			with
	Countershaft 1st gear		Mainshaft 3rd gear
	35760-61R		35312-66R
	17 teeth		20 teeth
	with
	Mainshaft 1rd gear		Countershaft 3rd gear	27
	35277-61R		35709-54A	"E"
	26 teeth		23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58R	35305-56
		22 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	28
		35296-56R	35712-66R
		23 teeth	24 teeth
			with
			Mainshaft 3rd gear
			35312-66R
			20 teeth
			Countershaft 3rd gear	29
			35709-54A	"J"
			23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58	35305-56
		20 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	30
		35296-56	35712-66R
		23 teeth	24 teeth
			with
Clutch gear	Countershaft 1st gear		Mainshaft 3rd gear
37450-61R	35760-54RA		35312-66R
19 teeth	17 teeth		20 teeth
with	with
Countershaft gear	Mainshaft 1rd gear		Countershaft 3rd gear	31
35695-58R	35277-52A		35709-54A	"F"
25 teeth	27 teeth		23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58R	35305-56
		22 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	32
		35296-56R	35712-66R
		23 teeth	24 teeth
			with
			Mainshaft 3rd gear
			35312-66R
			20 teeth
			Countershaft 3rd gear	33
			35709-54A	"H"
			23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58	35305-56
		20 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	34
		35296-56	35712-66R
		23 teeth	24 teeth
			with
	Countershaft 1st gear		Mainshaft 3rd gear
	35760-54RA		35312-66R
	17 teeth		20 teeth
	with
	Mainshaft 1rd gear		Countershaft 3rd gear	35
	35277-54R		35709-54A
	28 teeth		23 teeth
			with
		Countershaft 2nd gear	Mainshaft 3rd gear
		35750-58R	35305-56
		22 teeth	20 teeth
		with
		Mainshaft 2nd gear	Countershaft 3rd gear	36
		35296-56R	35712-66R
		23 teeth	24 teeth
			with
			Mainshaft 3rd gear
			35312-66R
			20 teeth

Patrick, Sept 2009