School Bus Conversion Resources

School Bus Conversion Resources (http://www.skoolie.net/forums/)
-   Electrical, Charging and Solar (http://www.skoolie.net/forums/f49/)
-   -   belt driven generator questions (http://www.skoolie.net/forums/f49/belt-driven-generator-questions-23824.html)

50 crown 08-10-2018 08:27 PM

belt driven generator questions
 
Hello fello skoolie's,
I am in the process of finishing up my electrical and the following ideas and could use some feed back.

I'm planning installing a 220v mini split and using a 220 inverter and Generator when no shore power is available. now I noticed a large belt driven possibly hydraulic pump bolted ( not being use) on the front of my 220 cummins and thought wow what about just installing a 220 generator head to that and not purchase a 8-10k diesel genset takes up a lot of room underneath the coach and vibrate my bedroom.
I see there are some good ones out there that have computer controlled regulators to I think keep the voltage steady.
any thoughts or comments. I plan to have 1k watts of solar up top and viltron inverter to run everything.
thanks in advance

Iceni John 08-10-2018 09:59 PM

You say this possible hydraulic pump is not being used? If it's for the power steering, do you now have good ol' Armstrong steering (i.e., no power assistance at all)? A 1950 Crown would not have any other need for hydraulics, so what else could it be?

1kW of solar panels are not enough to power a large minisplit A/C by themselves. Are you thinking of using a new alternator to charge only the house batteries, or both the house and start batteries, or what? Just bear in mind that alternators designed for SLI batteries don't do a good job of charging deep-cycle batteries such as would be used for a house system - they do not have a programmable 3-stage charging regimen like a good charge controller or 120VAC charger has, so the deep-cycle batteries will eventually end up deficit-charged and die a premature death.

Tell us more about how you plan in integrating a new engine-driven alternator with the PV system - we're very curious!

John

50 crown 08-10-2018 11:31 PM

1 Attachment(s)
o wow never crossed my mind thats its possible the power steering pump !!! ya this crown is a tuff steerer and I was looking for a power asst or something. the bus had a hall Scott originally and so the new motor must have came with this pump. well that possibly changes that idea haha.
I can't figure out how to post a pic yet or I would share the photo.

I planned on a inverter charger to charge the battery, and adding a 220v generator on the house engine connected to the transfer with. so while the the bus is running it will act as penny/shore power and the system wont switch to batteries. I'm looking into 400 ah victron system for charge controller, inverter/charger and the hole shebang.

I see your a local crown owner as well. nice to meet you.Attachment 24876

Ronnie 08-11-2018 05:43 AM

that does look like it is for power steering. I see it is looped back to itself. Maybe your bus does not have power steering so when they swapped engines they just left the pump disconnected. Check the steering for a hydraulic cylinder, or any connections for hydraulics.

JDOnTheGo 08-11-2018 08:44 AM

What kind of generator head? How are you going to control RPM and/or generator output?

50 crown 08-11-2018 09:25 AM

this is what I was looking at. basically a AC alternator ( I already have a engine capable of running this lol ) what do you think ?

Specifications: Ratings
MODEL Volts Amps
Peak Watts
Peak Watts
Continuous RPM Weight
PM-110 120 29 3500 2500 3600 27 lbs.
*Blue Max 120 37 4500 3000 3600 32 lbs.
*Blue Max 50 hz. 120 30 3600 2400 3000 32 lbs.
*PM-220 220 15 3500 2500 3600 27 lbs.
*PM-220 50 hz. 220 13 3000 2000 3000 27 lbs.
• These models must be ordered with a voltage regulator

… OPTIONAL SOLID STATE VOLTAGE REGULATOR
Patent #6528973

The Optional Power Mite® Voltage Regulator provides constant voltage at varying engine speeds. The innovate design of the Power Mite® Voltage regulator is unique. There are no relays, transformers or moving parts to wear which make this unit extremely reliable under the most severe conditions.

Fabco

JDOnTheGo 08-11-2018 09:37 AM

That is VERY interesting. What does one of those cost (plus the regulator)?

50 crown 08-11-2018 09:51 AM

Quote:

Originally Posted by JDOnTheGo (Post 285620)
That is VERY interesting. What does one of those cost (plus the regulator)?

I don't have a exact price yet, however off my research it looks to under 1k

I found this company that states constant voltage and all size wattages. just seam like a lot less room and they talk about only using like 6-8 hp to run.
https://www.meps.com

Ronnie 08-11-2018 11:21 AM

I have one of those....on a cat 3406. Do not use it anymore. It only gives proper voltage at full engine speed. If you can over speed it with a larger engine pulley maybe it would regulate. however it will not boost voltage if the speed is to low. I just can not see running a large engine at full speed for a little electricity. Would rather not put the wear on the prime mover.

Ronnie 08-11-2018 12:09 PM

Just to clarify, mine is the Fabco unit. The other link you show to meps looks like a true alternator. Fabco is a generator.

So for the record, my Fabco has been reliable; 20 years it has been on there. Had been used about 40 hours a week for some time. Until we got a real generator. Every time we shifted gears, the voltage changed until full speed was resumed. That is hard on electronics like a stereo system. Fried a few of them. Drops to about 50 volts at idle. It is used sometimes when we can set the throttle and let it run.

Now if you have a spare engine laying around, 10 hp or so, then belt drive it off that. Then you would set it up for constant speed and it will do great.


All times are GMT -5. The time now is 02:43 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.