B2920 Alternator Upgrade

[Delphicoder]

I have searched the forums, and have found where many opt for an upgraded alternator on the B2920. Does anyone have an idea on the part number, or how much it costs to have it installed?

 

[Verticaltrx]

The kit is available through whole goods (sales dept.) and is # B7311. List price on it is $186. Not sure how much the dealer would charge to install it, should be easy to do your self though.

 

[oldballs]

I'm curious. What is the amp rating of your OE alternator vs the Upgraded one?

 

[Delphicoder]

I am not sure haha. I am getting a new tractor and was thinking of adding lights.

 

[wdchyd]

Why not just mount the new lights and monitor your battery voltage before and after you use tractor to determine if it's even necessary....

This is a new tractor, right..??....Maybe the tractor dealer could upgrade before you take delivery?

 

[jakell2010]

I believe it's 30 amp,,,,the optional one is 40,,considering that you are only USEING the battery for starter and glow plugs and not for spark, ,,,30 amp should power a couple of extra lights,,,I have the rear light and two on the rops,,,on mine and it's fine,,,,If I had to buy it again, I would spec it out with 2 spool valve on the back (3 rd function) ,,not a bigger alternator

 

[Delphicoder]

Thanks for the tips and info. After reading these, I think I will be fine with the stock option. I also read that the dipstick and stuff have to be altered with the upgrade, which is fine, but if I don't need it then I will skip it :thumbsup:

 

[ericher69]

Been there done that

Stock is a dynamo (14 amps)

Upgrade is 40 amps

About $4-500 installed

 

[freddyr]

some newer kubotas have a 40 amp. my bx2660 has a 40 amp, and i run extra lights and heater with no prblems:thumbsup:

 

[wdchyd]

Been there done that

Stock is a dynamo (14 amps)

Upgrade is 40 amps

About $4-500 installed

14 amps seems kinda small......are ya sure that's not 14 volts..??..:confused2:

 

[skspurling]

14 amps is the stock for all B2#20 tractors. That powers all the standard lights with just a little extra. I am considering the upgrade too, for the same reason, on the B2620. It's pretty much the same tractor with a few less HP, so it's the same kit. Supposed to have the alternator, belt, bracket, wiring harness,and the regulator. It's not an easy unplug/plug-in upgrade, but it dosen't look like you have to do any custom work to get it installed. It looks like you have to remove the dash to locate some of the parts. There looks to be a bit of time involved, so that explains the cost for the dealer to install it.

 

[wdchyd]

for $4-500 upgrade it would almost seem worth it to use a deep cycle marine battery to add-on just for those late night jobs.....just throw a charger on it when done..

I guess if no extra current draw is necessary then 14 amps is enough for just recharging ...

Having a cab with blowers, wipers and extra lights would certainly be a burden for the stock alternator

Does anyone have any numbers or pictures of the upgraded alt..??

 

[skspurling]

14 amps seems kinda small......are ya sure that's not 14 volts..??..:confused2:

14 amps is plenty. in a DC system 55watts is 4.6 amps of draw. You don't have much draw from running the engine like you do with a gas engine. it's all lights and topping off the battery.

 

[jakell2010]

Yes, AND,,,the LED lights are like 1-2 watts each,,and brighter than the sun

 

[GPintheMitten]

LED lights are great but they do not produce heat. Heat can be a benefit when snow plowing to keep the light clear. Of course, it is completely wasted watts if your not getting snow on the lights.

I just got a used B2620 and I'm considering putting a LED light on the ROPS facing forward and some conventional light facing rearward for rear mounted snowblower.

 

[beppington]

LED lights are great but they do not produce heat.

I'm not sure that's true - Check out the heat syncs on the backs of these LED lights:

24-watt round LED light

24-Watt LED flood light

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

 

[wdchyd]

I'm not sure that's true - Check out the heat syncs on the backs of these LED lights:

24-watt round LED light

24-Watt LED flood light

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

Thanx for the link Beppy, those are some sexy lights..:thumbsup:

 

[GPintheMitten]

Quote:

Originally Posted by GPintheMitten
LED lights are great but they do not produce heat.

I'm not sure that's true - Check out the heat syncs on the backs of these LED lights:

I think you are right. I stand corrected. Here's a link and an outtake from an article I just found:

LEDs Magazine - Fact or Fiction ? LEDs don?t produce heat

Fact or Fiction LEDs don稚 produce heat
An often-quoted advantage of LEDs is that they don稚 produce heat, and are cool to the touch. Fact or fiction?
In one sense this is true: LEDs are cool to the touch because they generally don't produce heat in the form of infrared (IR) radiation (unless of course they are IR LEDs).
IR radiation heats the enclosures and surroundings of incandescent bulbs and other sources, making them hot to the touch. The absence of IR radiation allows LED fixtures to be positioned in locations where heating from conventional sources would cause a particular problem e.g. illuminating food or textiles.

However, crucially, heat is produced within the LED device itself, due to the inefficiency of the semiconductor processes that generate light. The wall-plug efficiency (optical power out divided by electrical power in) of LED packages is typically in the region of 5-40%, meaning that somewhere between 60 and 95% of the input power is lost as heat.

The energy consumed by a 100-watt GLS incandescent bulb produces around 12% heat, 83% IR and only 5% visible light. In contrast, a typical LED might produce15% visible light and 85% heat.
Especially with high-power LEDs, it is essential to remove this heat through efficient thermal management. Without good heat sinking, the internal (junction) temperature of the LED rises, and this causes the LED characteristics to change.

However, in a practical situation, when snowblowing, I think halogen lights will melt accumulated snow more than an LED because of the infrared radiation. But you can always just wipe the lens periodically especially if reachable from the seat. And as has been pointed out on tractors with limited amperage dynamo's the LEDs consume less amps.

Bottom line, I have the 14 amp dynamo, so you convinced me to go with a couple of LED's instead of halogens. Thanks.!

Just something to consider.

 

[Delphicoder]

Thanks all, although I am still confused now. I will wait and see what it looks like when it arrives. Dynamo vs alternator, versus what it takes to drive lights. Confusing.

 

[ericher69]

Reason I did upgrade was 2 55 watt Halogen spots in front of cab (9 amps)

3 speed heater. (10 amps)

2 55 watt floods in rear. (9 amps)

Electric wiper (4 amps)

Electric chute linear actuator (4.5 amps)

36 amps + stock lights + strobe

I obviously don't run all at once as I would still not have enough juice!

I decided to do this after I refueled tractor and it would not start!

Diesels will still run even if they don't have the electrical power as opposed to a gas engine