Author Topic: Weichai 1115, 25hp Changfa-type  (Read 44745 times)

Biloxibad

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Re: Weichai 1115, 25hp Changfa-type
« Reply #30 on: April 24, 2007, 01:25:40 AM »
Traced the grounding and the 10 HP motor is grounded via the frame grounding to the main generator, so am getting the Terry's preferred wiring setup.   I rechecked everything and am still getting today 250V - 33A on the Metro6/1 and 62A 250V on the Changfa Clone with the ST15. (got every heater, dryer, welder and airconditioner in the place on at the same time LOL.)

When I cut the breakers to the 10 HP motor the changfa clone with the ST15 begins bellowing black smoke and blows a breaker.. (60 AMP).   The motor won't generate without the ST15 running or hooked up to another power source for excitation.

I am generating power in the correct direction as I installed a standard Utility type Electric meter in series from the Motor to the panel,  When I am running the motor at less than 1800 RPM the little wheel runs to the left very slowly , IT stops as I speed up to 1800 and  then begins to spin very fast to the right when I run the RPM up to about 1850 which is where I am at the above settings..

I wish I had some more sophisticated equipment to see what I am really putting out , but that would take a load maker wayayyy above what I need around the DIY homestead.

The fuel usage studies I intend to run will tell the tale I am sure

LATER


Steve
Metro lister6/1
Jiang Ling zx1125
ST15
Baldor 20 3 ph 3450
Baldor 10 Hp single phase 1750

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #31 on: April 27, 2007, 04:53:24 AM »
Weichai 1115,
Had fun today.  Got the shaft coupler back, all bored and keyed.  Fits perfectly.  Took the lightweight feet off the weichai and welded heavy wall 5" by 3" tubing to the skid frame.  works perfectly except there's now no way to drain the oil and the flywheel rests on the 5 by 3 tubing.  Some work with the torch should fix the flywheel's problem.  Sure hope the oil drain plug  isnt some exotic chineese thread so I can put a hydraulic hose into it.  One step forward, two backward.  Life is an adventure.  More pictures when I've fixed the problems I made today.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

europachris

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Re: Weichai 1115, 25hp Changfa-type
« Reply #32 on: April 27, 2007, 01:08:37 PM »
Some work with the torch should fix the flywheel's problem.   flywheel rests on the 5 by 3 tubing.

I had the same problem with my R185 engine when I went to mount it to a pair of oak 4x6 beams.  I had to router out a small recess about 3/4" deep to let the flywheel drop down enough to where the engine feet would sit flat on the mounts.

Chris

rcavictim

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Re: Weichai 1115, 25hp Changfa-type
« Reply #33 on: April 27, 2007, 04:04:47 PM »
Quote
I had the same problem with my R185 engine when I went to mount it to a pair of oak 4x6 beams.  I had to router out a small recess about 3/4" deep to let the flywheel drop down enough to where the engine feet would sit flat on the mounts.

Chris

That sounds like a depressing job but I`ll bet your handywork left a lasting impression!  :D
« Last Edit: April 27, 2007, 04:06:43 PM by rcavictim »
-DIY 1.5L NA VW diesel genset - 9 kW 3-phase. Co-gen, dual  fuel
- 1966, Petter PJ-1, 5 kW air cooled diesel standby lighting plant
-DIY JD175A, minimum fuel research genset.
-Changfa 1115
-6 HP Launtop air cooled diesel
-Want Lister 6/1
-Large DIY VAWT nearing completion

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #34 on: April 27, 2007, 08:37:24 PM »
Coulda been worse,
Looks like I only need to cut a 3" bevel on the ends of my 3 by 5s for the flywheel.  10 min work with the torch and grinder and it will even look like I did it on purpose.  Had to shim the motor 1/2" and the ST 1 1/8" to clear oil pan bolts and align the shaft coupler.  Local parts store made me a hydraulic hose that screws right in.  Will cut a hole in the side of the 3 by 5 , and weld in a pipe so no sharp edges to wear on the hose.  BTW the oil in the pan looked brand new and clean.   My work week starts tonight, so no more fun 'till Mon.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #35 on: May 04, 2007, 02:40:46 AM »

A view of my next project.  Will follow Doug's procedure on cleaning and sealing the insides of the ST


My finished coupler.  Still need to do the fine alignment when I bolt everything down.


This mount just keeps growing.  Weighs at least 150lb, mabe more.


Some of my mounting shims from McMaster-Carr


Measure once, Cut twice. :-\



 
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

rcavictim

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Re: Weichai 1115, 25hp Changfa-type
« Reply #36 on: May 04, 2007, 02:51:59 AM »
Zeke,

You are either gonna blow those bolts or prematurely wear out your alternator and crankshaft bearings with that non-compliant coupler.  It is IMPOSSIBLE for you to get the alighment straight enough and then hold the two units in perfect geometrical and spacial synchronysm with all the bouncing around and vibration.  I give your bolts less than an hour first trial.  You are going to have some nicely pounded out, not so threaded holes in the flywheel in less time than that if the bolts don`t snap.

Sorry to be the harbinger of DOOM.
-DIY 1.5L NA VW diesel genset - 9 kW 3-phase. Co-gen, dual  fuel
- 1966, Petter PJ-1, 5 kW air cooled diesel standby lighting plant
-DIY JD175A, minimum fuel research genset.
-Changfa 1115
-6 HP Launtop air cooled diesel
-Want Lister 6/1
-Large DIY VAWT nearing completion

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #37 on: May 04, 2007, 03:06:45 AM »
Coupler,
Actually the two metal halves of the coupler do not touch.  There are 6-  3/4" nylon rods in slots that transfer the power.  Assuming the nylon rods hold up, should be a flexible connection.  Hve a pic of the inside of the coupler a page or so back.  Please  keep the feedback coming.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

rcavictim

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Re: Weichai 1115, 25hp Changfa-type
« Reply #38 on: May 04, 2007, 03:09:58 AM »
Coupler,
Actually the two metal halves of the coupler do not touch.  There are 6-  3/4" nylon rods in slots that transfer the power.  Assuming the nylon rods hold up, should be a flexible connection.  Hve a pic of the inside of the coupler a page or so back.  Please  keep the feedback coming.
Zeke

Oh yes, I remember that coupler.  OK, good luck with it!  Keep us posted.
-DIY 1.5L NA VW diesel genset - 9 kW 3-phase. Co-gen, dual  fuel
- 1966, Petter PJ-1, 5 kW air cooled diesel standby lighting plant
-DIY JD175A, minimum fuel research genset.
-Changfa 1115
-6 HP Launtop air cooled diesel
-Want Lister 6/1
-Large DIY VAWT nearing completion

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #39 on: May 04, 2007, 03:19:02 AM »
I'm not sure the coupler is as good as an off the shelf from McMaster, but will find out eventually.  It seems to be made for the engine, so there is hope.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

Doug

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Re: Weichai 1115, 25hp Changfa-type
« Reply #40 on: May 05, 2007, 02:22:17 AM »
Can I see more pictures of the head and in particular the castings and around the foot. I see no gussets and I wounder if they add more cast some place else to compensate.

Doug
It's a Good Life, If You Don't Weaken

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #41 on: May 05, 2007, 10:08:54 AM »
doug,You mean around the foot of the ST.  I can take some tomorrow.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

Doug

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Re: Weichai 1115, 25hp Changfa-type
« Reply #42 on: May 05, 2007, 11:38:11 PM »
Yes, but I'd like to see pictures from every angle too.

Need to go to school on the ST types. Not all are the same.
It's a Good Life, If You Don't Weaken

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #43 on: May 06, 2007, 10:23:42 AM »
OK,Happy to do.  May be monday before I get them posted.  I'm in the middle of my weekend nightshift workweek. Need to sleep all day.
Zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger

okiezeke

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Re: Weichai 1115, 25hp Changfa-type
« Reply #44 on: June 12, 2007, 02:38:22 AM »
Changfa type question:
I'm looking at the exhaust manifold trying to figure the best way to adapt to steel pipe.  First I want to use a bigger muffler.  Then later I want to go underground with the exhaust.

The only idea I've come up with is cutting off the threaded end of the stock muffler and welding  a 2" steel pipe coupling  to the stock threaded section, and going from there.

does this thread match anything?  It seems to be between 1-1/2" and 2" both pipe thread and electrical conduit.

Can I braze directly to the ex. manifold?  I'm not a very experienced welder.

Saw here that one fella welded up a new ex. manifold,  guess that would work, but would be lots of work.

I know a lot of folks have faced this problem.  Would love to know what worked.

Thanks,
zeke
Changfa type 25hp with 15kw ST head
Lovson 20-2 in blueprinting/rebuild
International TD-15 B  1962 dozer
Changfa 8 hp., 280 A battery charger