BAWC Forums

[quote=""tabasco122""]Why do you care about the speedo so much? Should be able to fix it with a Dakota digital chip or something[/quote]

It’s not the speedo I care about, it’s the rpms at given speed.

With 4:56 @ 65 your turning 3360rpm but if you have 1.5” taller tire then it’s like 4:10’s @65 which is 3020. Hence why I want 4:56 gears but 1.5” taller tire so it’s like I have 4:10 gears and 65 isn’t horrible. But I can’t get that without a lift so it honestly looks like I sill do 4:10’s and stock size tires. Orrrrr, just thought of this. Have a set of tires for winter that are the bigger ones, but if I’m going to tow, have a set of road tires that are stock size. Hmmmmmm.


Coop

You're way over thinking this.

Totally.

[quote=""Jeff V.""]You're way over thinking this.[/quote]

[quote=""mjannusch""]Totally.[/quote]

It's Coop....

[quote=""aaronatstate""]It's Coop....[/quote]

This.


Coop

I do it too. But I'm learning to recognize it and stop myself.

The first step is acknowledging you have a problem.

[quote=""Jeff V.""]I do it too. But I'm learning to recognize it and stop myself.

The first step is acknowledging you have a problem.[/quote]

I guess main question is this. I’m doing gears to give the vehicle an easier time on the trans and give me more power for towing. If the bigger wheels make the speed work out would I notice any more power or would it be like stock gears and stock tires? If I figure that out then I think I can pick my gears accordingly.

Coop

Think of the entire driveline as a set of gears. From the engine, through the trans, the transfer case, the axles, and the tires. Do the math for all those and you'll see how much torque you apply to the pavement.

That's ultimately what you're trying to figure out for towing. How much torque you can apply to get your load moving.

If you change your tires to help with the highway RPM, then you're going to reduce how much torque you're putting down from a standstill. You'll be right back where you started. You can't change the two values independently.

If you do gears and bigger tires it'll be like you did nothing. If you do gears but leave the tires alone you'll reach your goal of making pulling a hill easier but your cruise rpm will be higher. You can't get both short gearing and low cruise rpm unless you add some gears to the trans or somehow make 4th in the trans taller.

[quote=""Jeff V.""]Think of the entire driveline as a set of gears. From the engine, through the trans, the transfer case, the axles, and the tires. Do the math for all those and you'll see how much torque you apply to the pavement.

That's ultimately what you're trying to figure out for towing. How much torque you can apply to get your load moving.

If you change your tires to help with the highway RPM, then you're going to reduce how much torque you're putting down from a standstill. You'll be right back where you started. You can't change the two values independently.[/quote]

[quote=""vr4""]If you do gears and bigger tires it'll be like you did nothing. If you do gears but leave the tires alone you'll reach your goal of making pulling a hill easier but your cruise rpm will be higher. You can't get both short gearing and low cruise rpm unless you add some gears to the trans or somehow make 4th in the trans taller.[/quote]

All of this. One of the main reasons people put in taller gears when they put bigger tires on, is to maintain "stock driveability" with regards to toque to the ground.

Yep. Did that with the jeep. Wasn't about more power. It was about making it usable again.

That’s what I figured, if the speed works out the same then the torque to the ground is the same.

So I guess I will go with 4:10’s and prob stock sized tires ��.


Coop

Ran two extension cords over the the avalanche to plug up the trickle charger. The charger shows if the battery is 0-50 or 50-100. The battery was 0-50. I need a different option.

First would be just a bigger better battery.


Coop

Take the hill you complain so much about and put it to work for you.

Build a water wheel and hook it up to a spare alternator.

[quote=""Jeff V.""]Take the hill you complain so much about and put it to work for you.

Build a water wheel and hook it up to a spare alternator. [/quote]

It’s funny you say that as we’ve joked about stupid things like that over the years.

I just need to get more than 3 weeks out of a battery. Maybe that’s good. I don’t know. But I know I need more.


Coop

3 weeks doesn't sound right. I don't suppose you've checked for a parasitic drain, have you?

[quote=""Jeff V.""]3 weeks doesn't sound right. I don't suppose you've checked for a parasitic drain, have you?[/quote]

No. It does get started up and shut down at least once a weekend. Just not long enough to recharge it.


Coop

Check for a draw on the battery, but you have to drive it longer to ensure it has time to charge the battery.

Solar panel on the roof, wired direct into the battery.

[quote=""mjannusch""]Solar panel on the roof, wired direct into the battery.[/quote]

Had one. Tried booking it up to other things and it acted like it didn’t work.


Coop