lumbee1
Native American
I'd love to hear more about the install and your before and after driving impressions.
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We have the high range UD and OD gear sets in stock as well as the 3.1:1 low range gears.
Strength isn't a concern; these gears are made by SeaMaster, who has been the OEM gear & shaft supplier for Toyota for decades ....
Feel free to call or message me anytime.
Georg @ Valley Hybrids & Cruiser Brothers
Shop 209-475-8808
I hope you guys are aware that both high range OD and UD gear sets are already available and have been.
There's no need for anybody to spend a minute/penny on R&D for a product that's already available from a very reputable manufacturer/vendor and that is Terrain Tamer.
Myself and another one of the resellers ( @NLXTACY aka Joey aka Witts' End )
who offer these parts along with the rest of the Terrain Tamer product line are on this thread.
I'd love to hear more about the install and your before and after driving impressions.
Georg, I know you have stated that the over/underdrive gears for hi range do not affect the low range gearing, but I do not see how that is possible.
If I understand this case, in high range power flow is through the three gears at the back of the case. From the factory, the input and output gear have to be the same tooth count to achieve a 1:1 ratio. The idler gear may or may not be the same tooth count, but it doesn't effect the ratio either way.
We currently have a few sets in stock; both UD & OD as well as the 3.1:1 low range sets. All the gears & shafts we sell & install are made by SeaMaster. Great quality components!!!!
Georg @ Valley Hybrids & Cruiser Brothers
That's good FAQ material right there.You're spot on, with any change to the high-range ratio, you are proportionally changing the low range ratio as well.
Final T-Case Gearing Chart with different options, whipped this up quick so feel free to check my math.
View attachment 1613547
That's good FAQ material right there.
Georg, have you ever stocked the 36221-60121M?
We have not. Terrain Tamer lists the part and we are waiting to hear back about availability.
But we both know that the "M" gears, just like the UD & OD gears and other low production items can take a while to procure.
Have you seen one of these gears in person?
Georg @ Valley Hybrids & Cruiser Brothers
You're spot on, with any change to the high-range ratio, you are proportionally changing the low range ratio as well.
Final T-Case Gearing Chart with different options, whipped this up quick so feel free to check my math.
View attachment 1613583
Nice! So with both the UD high and low range low gears installed you get 3.3:1 low range gearing.
Nice! So with both the UD high and low range low gears installed you get 3.3:1 low range gearing.
Only in theory, because it will depend on the tire size you run. The greater the diameter, the lower the final gear ratio will be.
Don't get me wrong, it won't drop to really sucky levels.
You would only get that 3.3:1 ratio with 31" tires.
Zero theory, every time your transmission output spins once, your t-case will spin 3.3 times, tires have zero impact there. Now that can be multiplied by transmission 1st gear & axle ratio for crawl ratio and compound with tire size for "realized crawl ratio"
Agreed. It stays constant.I think you misundestood Kurt's post you quoted. The ratio quoted is for transfercase output. Everyone knows tires factor into your driving experience, but the gear reduction is the gear reduction, regardless of tire size.