Gem Bids For 11 Fan Ratio 28: 1 Holdback Ratio 28: 1 Spiral Bevel Pinion Shaft 22.4: 1 Spiral Bevel Gear 22.4: 1 Hold Back Csb-31520: 1 Output Shaft Gear Ratio 28: 1 Second Intermediate Pinion Shaft R-28: 1 First Intermediate Pinion Shaft R-28: 1 First Intermediate Shaft Gear R-28: 1 Second Intermediate Shaft Gear R-28: 1 Input Pinion Shaft Ratio 28: 1