P1000 Little Tire to Gear Math

[Bradley-Thornton]

Thought I would share a little info. (If my math is off let me know)

Diameter x Pi. So 32x3.14=100.48 for a circumference compared to 27x3.14= 84.78
84.78 divided by 100.48 is .8437 so about a 15.62% gear increase, x 1.25 for the IGR is 1.05%, portals 4in 30% with IGR is 1.55 for a net 30.77% gear reduction, portals 6in 45% with IGR is 1.70 for a net 43.42% gear reduction.

So being I'm just doing the IGR I'm almost back stock just a little better by 1%.(Weight of tires will eat that up)

Yes, I posted this on my build but thought it may need to go here also.

 

[gullyjumper]

 

[Mopower58]

I hope that Jeremy comes out with a 10-15% IGR. I love my 28's and no lift and I never go 67 mph in my Pioneer.

 

[ODAMO]

When calculating mph from gearing and tire diameter you have to measure your tires rolling radius and double that would be the diameter that would translate to actual mph.

 

[MikeyXX]

What is IGR?

 

[Bradley-Thornton]

What is IGR?

Internal Gear reduction

 

[russknight]

I need an overdrive.

 

[ofrcboy]

I need a 4 to 1 transfer case that works in reverse. I know never happen.

 

[Boss0144]

Who sells / where do you buy an IGR?

How is the install?

Thanks!


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[Bradley-Thornton]

Reduction Boss Machining

I had a Honda shop do it but I'm sure When you talk to them on Facebook they can set you up with someone they trust.

 

[Boss0144]

Ok, thanks for the info.


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