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Messages - tiger

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16
General Discussion / CA. Thomas Fire
« on: December 17, 2017, 03:57:36 AM »
Go to KEYT.com for live updates, Our family is safe and prepared, most are in construction and own water trucks and heavy equipment to deal with their neighbors and their own needs and are doing so. I only lived there for 4 years in the 60's and the 80's wife born and raised there. The conditions are the worst.

17
Original Lister Cs Engines / Re: Dismantling the Bookham 12/2 CS
« on: November 24, 2016, 06:08:43 AM »
Samo:
 I would switch to acetone wd 40 is a water displacement fish oil compound. acetone will cut diesel or gasoline varnish fast.

18
Listeroid Engines / Florida hurricane
« on: October 06, 2016, 04:32:12 AM »
It looks like  "rocket boy" "cujet" "horseless" and others are going to exercise their listeroids once again!  I hope they will tell how it goes, as their exploits got me into the listeroids. At 77 I've been thru several and some typhoon's to boot, none can be taken lightly! I think their exploits are why we do what we do and or are.
 My prayers for those in peril

19
on the pics go back to the python pics top of page hit directory then pics dated 12/5

20
I was able to get it , faster too.

21
Everything else / Re: 3k st alternator just stopped mid work
« on: October 23, 2015, 06:08:49 AM »
Once again, the rotor windings  have to align with the stator windings where the harmonic windings are. The brushes have to align  with the rotor slip rings to transfer the harmonic  voltage to the rotor. The ST Gen Series have a history of faulty bearings full of Yak fat.  You need to align the above with a dial gage and bearing shims to achieve the above first!
good luck!

22
Everything else / Re: 3k st alternator just stopped mid work
« on: October 11, 2015, 12:51:31 AM »
maybe time to check rotor bearings and shims if fitted, for end slop

23
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 26, 2015, 03:06:38 AM »
 A common point of failure may be the input connections to the AVR. Might be worth tracing back to stator windings and checking for cold solder joint or bad crimped connection.

24
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 25, 2015, 02:40:01 AM »
Carl: I agree with Bruce , run it up with the Variac to correct voltage , then load it up for a while and reconnect every thing and see what happens. It would help me at least to know what the voltage at the brushes is no load, half load, and full load under Variac and or AVR.
 You are having fun! ;D

25
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 24, 2015, 04:46:44 AM »
Be sure to protect the Variac! put an inline fuse for the rated amps, mine is 10 amps but only that at 1/4 from low voltage end. I would start at 30volts AC fed through the bridge to the brushes put in 2 trouble lites on the 2- 120 volt legs and see what happens. If have a Kill A Watt meter,  you can set rpm for correct frequency, voltage. once those are correct put a load on it. I did something similar once turned around to grab meter and watched the magic smoke come out. upon complete disassembly, found fine silt and 3 dried up worms in the windings. Turned out it was from the Washington I-5 floods in Centralia a few years ago.
have fun!

26
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 23, 2015, 03:00:34 AM »
Well that is good to hear as I have totally blown the above post. I checked mine early this morning and low and behold no brushes, a senior moment no doubt. the rotor/field has no wires or brushes and rectifies the induced voltage from the residual magnetism to self regulate, another Chinese marvel. When I read Ridged 3600rpm 8kw I assumed the big box store $660.00 knock off specials of which I've worked on several and own one. I apologize for the  miss information.

27
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 22, 2015, 04:41:31 AM »
If you have the end cap/shroud off, you should be able to see the diodes mounted on the rotor. The rotor is the field. the brushes transmit the AC harmonic voltage in conjunction with the above mentioned capacitor through the brushes to the rotor generating the DC voltage to produce the magnetic field mentioned above. being as how the rotor is spinning I do not know how to measure directly. The cap on my unit was rated at 400 volts, albeit a different brand. I would expect  around 70 volts AC on the brushes to feed the diode bridge on the rotor. the diodes should be 1/4 inch diameter 3/8ths long mounted close to the rotor shaft 2 on each side for balance, in my case but in any case 4 each for a full wave bridge. If you had a Variac one could apply AC to the brush leads  in increasing amounts till the voltage out was right. At that point the residual magnetism should be restored. I would run it under a load for a bit to be sure, then shut down and see If it comes up on it's own. Another way is to parallel some 110 lite bulbs 100 watt hooked to a separate supply  individualy switched to series connect to the brushes, the more bulbs on equal a higher voltage to the bridge. As I remember my tests your readings seem OK. I'm about to refresh the fuel for the winter and will supply voltage readings and maybe a pic or 2

28
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 19, 2015, 02:41:37 AM »
As for the other leads, most of the electric start engines supply their own battery charge system, and the generator windings for the purpose are not used.

29
General Discussion / Re: Rigid RD90800s 8kw 3600rpm generator
« on: September 19, 2015, 02:35:55 AM »
most 3600 2pole generators have a capacitor across  the harmonic winding, encapsalated in plastic and prone to failure shaped 1/4 round 2 to 3" long hooked to stator. the rotor has a diode bridge mounted around the shaft, these four diodes must be unsoldered tested and resoldered and reincapsolated unless you have a shop to test rotor as assembled. The cap fails with holes burned in it if not can be checked with a Sencore Z meter or equal, It applies the working voltage to the cap under test and much more real than the typical digital volt ohm meter. Check You Tube- some English guy flashed the field with 2 electric drills one plugged into the generator the other driving the shaft of the first, the first a universal ac dc version trigger locked on, the second chucked up to drive the first. It is common for some one to run engine out of fuel with load on generator this can suck the residual magnatisim out of the generator and lead to your symtoms

30
Generators / Re: Back to 240V
« on: January 08, 2015, 05:47:50 AM »
From the generator source you float the neutral, IE disconnect the neutral. Feed the 240 volt legs to the primary of the transformer. Pick up the neutral from the secondary of the transformer to feed to the load. This configuration will cause the generator to see a balanced load, regardless as how the wife loads it. One must insure that the generator ground is directly connected to your panel, the transformer and the panel is properly grounded. The neutral at the generator must not be tied to ground at the generator! Good luck, remember local codes and bribes prevail.

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