Is there a thread on battery preference?

[JZMOLIK]

Is there a sponsor on this site that sells the crown 260?

[beau]

You need to buy batteries local.


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[JZMOLIK]

Why is that?

[beau]

Shipping is freight only. Hazard rate.


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[JZMOLIK]

Ahhh.. makes sense

[JohnnieB]

Originally Posted by JZMOLIK

So is it safe to say the crowns 260a/hr is better than the exide?

Exide doesn't have a 260AH battery, so there is no direct comparison.

On the other hand, it is a neck-to-neck tie between a Crown CR-245 and an Exide GC-145 since both are 245AH batteries.

My goal was range and I originally planned to get 260AH batteries, but when I started comparing total cost (Price + Taxes + Shipping or trip expense to pick up - etc.) to have the batteries setting next to cart, I ended up special ordering 245AH Exide batteries through a local tractor supply (Rural King) and saved enough to pay for a DC-DC converter.

The best bang for the buck is typically the highest AH available, at the lowest price, from a local source.

[JZMOLIK]

My goal is more power for getting over small boulders, slight incines, and slight mud. As far as run time, the way i use the cart is I drive for maybe 10 min then park. Then drive for 10 min then park. Id say that I am maybe driving 45min on a charge.

On that note, what other things should i consider upgrading to get more "power?"
Also, I have seen 4x4 conversion motors online. Anyone have experience with these?

[JohnnieB]

Originally Posted by JZMOLIK

My goal is more power for getting over small boulders, slight incines, and slight mud. As far as run time, the way i use the cart is I drive for maybe 10 min then park. Then drive for 10 min then park. Id say that I am maybe driving 45min on a charge.

On that note, what other things should i consider upgrading to get more "power?"
Also, I have seen 4x4 conversion motors online. Anyone have experience with these?

A 260AH battery pack might be overkill for your application. (Not that there is anything wrong with overkill. )

Technically, the power to go over boulders, climb inclines and drive through mud is called torque, and is mitigated by weight. Except for battery packs made up of the super-economy grade (IE: Low AH) batteries, most will be able to produce the all the amps the motor is capable of drawing. A high AH battery pack will simply be able to produce the high amps for a longer period of time.

Tall tires reduce torque. IE: If the stock tire height is 18", a set of 23" tires will reduce the available torque by 22% were the rubber meets the road.

Going from a 36V battery pack to a 48V pack will increase both torque (and speed) by about 33%.

Going to a higher amp controller will increase the low end torque.

A numerically higher gear ratio in the differential increases torque.

Decreasing the cart weight reduces the torque needed to climb hills and climb over things.
IE: A 6 X 8V 48V battery pack weighs less than a 8 X 6V battery pack, so the same cart with a 6x8V pack will have better acceleration and won't slow as much on hills, but won't have as much range as the same cart with a 8x6V battery pack.

I'm an EZGO guy and don't know much about Yamaha carts, so I can't get more specific, but there must be some Yamaha gurus around here that can.

[JZMOLIK]

That right there gives me plenty of info to get this project moving. I think im good on the tire size as mine arent oversized but the are slightly larger i believe.

Correct me if im wrong but i think im going to order 48v controller and 8 - 6v batteries. Along with 4g cables.

[JZMOLIK]

what does upgrading the solenoid give you?