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Messages - rosebud

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1
Generators / flywheel rpm
« on: January 06, 2018, 09:45:07 PM »
Hi all...

This has been discussed, but more advice is always helpful...

I have a 6/1 Listeroid with a 23.25" OD, set of flywheels.

I had a problem with aluminum wiring in a 3kw st gen.. which is now back on line.
Picked up a 3600 rpm gen head from a friend on the forum.. as a back up. This gen seem happy making 110 volts with the 6/1 at 670 rpms.

My question... Does anyone operate their 6/1 in this rpm range?

regards, and thanks

steve

2
Generators / Re: CGG ST heads- warning- aluminum windings
« on: September 29, 2017, 09:50:35 PM »
Last year I had the rotor out and used copper "jumpers" to make up for the shortened ends on the aluminum wire.. it breaks very easily.
At that time I had a couple bad crimp joints.... fixed per Utterpowers recommendations....generally.
Sadly... I did not notice that I was working with aluminum ... thought it was poor quality copper. Never entered my head it was not copper.

Same problem this summer... then the aluminum mystery unfolded... or revelation. (white powder at crimps)

I stayed with aluminum for the repair. Picked up a bit of aluminum at Princess Auto.. similar to HF in US. Hard stuff to find in this area.
The aluminum wire was the same gauge, but much stiffer.

It is a tedious repair and I am not a competent solder type.. but learning is part of the fun.

The Uniweld product is supposed to join copper and aluminum.. think it will.. the flux is effective stuff.
I suspect it is not good for copper and aluminum to touch... corrosion and such.. (experts can weigh in on this)

If you want to join copper and aluminum .. suggest try using a butt connector (stainless), with an anti oxygen paste. Again keep copper from touching aluminum.
I did not have much room left for this connection, had to lengthen the wires from the coils anyway.
Have to think a bit about centrifugal force.. with butt connectors, as well... more stuff spinning in there...forces on ~17awg aluminum wire.

I'm not pretending to be a sage, just rambling per my path (so far) on this repair... hope it helps someone.

regards,
steve

3
Generators / Re: CGG ST heads- warning- aluminum windings
« on: September 29, 2017, 04:33:04 PM »
update...

I soldered up all the connections on the rotor. Used Uniweld 4300 kit... it worked. Aluminum is not nice to work with... especially with the wires getting shorter.. lots of solders.
See how long things last? .. my soldering may not be long term reliable... original wire is fragile...

I am getting ~7 ohms across each coil and ~27 ohms in total.. at the slip rings.

Just re installed the st head and cranked up the 6/1... there is power... tested it to 1500w.
Plan to get a 3600rpm head .. as back up.

onward,
steve

4
Generators / Re: CGG ST heads- warning- aluminum windings
« on: September 18, 2017, 03:08:44 AM »
I did have a look a the resistance at the slip rings... per Utter Power's trouble shooting guide... I saw something in the range of 20Mohm's .... way over the suggested 17ohm.

Proceeded to open the individual connections, to see where the problem was...  and noticed white powder coming out of one of my crimp connections... that's when I tweaked on the aluminum windings. This wire is very soft/brittle.. getting shorter so will have to splice in some pieces to make future connections/repairs.

This is a learning experience, but part of the fun... electricity is kinda magic stuff

thanks for the advice,
steve

5
Generators / Re: CGG ST heads- warning- aluminum windings
« on: September 17, 2017, 12:22:55 AM »
I have 3kw st head as well....

Today I found it has aluminum wire... oh joy..

I had redone the rotor winding connections last year.. and ran it for ~10 hours after a winter power outage... all good.
A month ago, I started up the 6/1 to test things.. and no power on the st head.

Wish I had picked up on the aluminum last year.. not too swift...

Next step... get a 2 pole for power backup... rewind the rotor with copper at leisure..? or go for a pricey 4 pole head with better reliability?

this is a hobby ... right..

regards,
steve

6
Listeroid Engines / Re: DES 8/1 Propane Conversion project
« on: July 18, 2016, 10:48:48 PM »
Appreciate the comments on the forum..

Looks like I have a cold solder on a 3kw st head also... It has about 40 hours total time on it....
It was not powering up intermittently...then not at all.
Using Utterpower guidelines... I started looking... Saw a small ohm value across the slip rings.
Moving along, noticed a lack of continuity across one field coil.
After lightly cleaning a small section of coil wires upstream of the small copper connection cap... looks like the solder is highly suspect.

The trouble shooting idea, came from this thread... thanks

steve

ps.. removing the doghouse per UP's mods

7
Original Lister Cs Engines / Re: Another 6/1 Restoration
« on: July 10, 2016, 10:12:53 PM »
I live about 3 hours from their shop... nice guys to deal with. I just drop over for some cross border shopping and stop in.
I did buy a tank from them. The tank is fine, the valve was not so hot.. but kinda to be expected from across the pond.
They have quite a bit of old stock Listeroid parts at good prices.

8
Original Lister Cs Engines / Re: Cast Iron Radiator
« on: March 23, 2016, 02:48:35 PM »
I went the old cast iron radiator route...works great.

The idea was to use the heat from the 6/1 located in the garage and transfer the heat to the house. I used a small pump (Swiftech) and a thermostat switch at the engine. The little pump is more than enough to handle the engine cooling needs. The cylinder temps cycles ~20F at 2000 watts load.... some fine tuning still to be done.

My location is eastern Canada...cold country in winter. Transferring heat ~40 feet in sub freezing temps is a little challenge, but it can be done... without breaking the piggy bank.

regards,
rosebud

9
Everything else / Re: Belt Tracking ?
« on: May 14, 2015, 08:56:20 PM »
Mike,

I am running into the same belt wandering problem.....
A year has passed....did the tape continue to work for you?

How wide is the tape you used  ?

regards
rosebud

10
This forum is a great place to learn...

This winter, a friend graciously arranged so that a 6/1 could be situated in my garage.....fun project. This made the SL1 available for future re-purposing. Your idea of using two alternators in a 24volt system is intriguing. Thinking of turning down the rpm's on the SL1 to ~1000 and bolting on the alternators as a supplemental way to charge up a 24 volt battery bank.

re winter: this year we had the most snow in eastern Canada, since 1963.....something shifted on the global warming trend thing ?    :)

11
Welcome to the forum....I enjoyed your comments....you could write a book or a least a technical paper....good reading...especially for a newbie likes your truly. regards...rosebud...another Canadian

12
I also am a satisfied customer....Tom and company are great folks.

He does a quality check on each generator he sells. Did mine while I was there, picking up machine.
Friendly and good guys to deal with.

steve in NB Canada

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