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Messages - mobile_bob

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Red Stone Engines / Re: I found Redstones for sale.
« on: March 12, 2023, 10:00:31 PM »
the redstone engines are chinese in origin, or at least that is what they were when first introduced here in the US
they are massive changfa looking monsters and at least those had no relation to indian or any other blackstone engine as i recall.

i seem to think they were in the 1200 cc range, maybe larger and 28 to 30hp or so?

but then again, i am not sure, it has been a while and i have slept since then

bob g

Engines / Re: Lister CEM 2 Cylinder Cold Lay Up Advice
« on: March 07, 2023, 11:32:57 PM »
+1 on Stef' rag thing!

tie a wire on the rags you stuff in the exhaust and intake, most especially if they are facing downward

its too easy to forget about them and buckle the engine up, and then start and inhale a rag, and that is a pain in the ass
to sort out.

don't ask me how i know this!  :)

bob g

Engines / Re: Rebuilding ST1
« on: March 03, 2023, 02:45:21 AM »
amen on cleaning!

i use ATF (auto trans fluid) because it is really good as a cleaning agent and when used with white paper towels
it shows when the bore is really clean

the atf will float out super fine abrasives out of the crosshatch, and the white paper towel will collect it
when the towel comes out red with no sign of gray color, the bore is really clean.

it is amazing what appears to be clean is really hiding a lot of fine abrasive grit

it makes a difference for sure.

i just finished an inframe overhaul of an isc 8.3 liter cummins, the cylinder liners were all packed in sealed plastic and appeared to be perfectly clean, but were dirty as all git out when i used the above method

it is amazing how many mechanics assume the factory clean is really clean and just either use as is, or think that cleaning solvent will be enough prep to use them.  when the reality is they are installing nasty parts, which shorten the life of the end product.

bob g

Things I want to Buy / Re: Want large ST gen head. Pacific Northwest
« on: October 08, 2022, 02:19:49 PM »
he could use a "hoof" and "pierce" belt drive governor?

not sure how tight they can regulate to, but they are common on old farm equipment engines and can be found on ebay.

bob g

General Discussion / Re: Microcogen down.
« on: August 20, 2022, 09:19:41 PM »
microcogen is back among the living again!!!

the tech got it all sorted out, and for now it is still hosted with hostmonster
i will be looking to move the forum to another host within the next few weeks, but for
now all is good.

let me know if there are any issues

bob g

General Discussion / Re: Microcogen down.
« on: August 20, 2022, 02:44:23 PM »
just an update

i have transferred the funds to get the tech paid to fix the problem
and he has agreed to work on it over the weekend.

so hopefully he is able to rectify the problem and get thing sorted so we can move
to a more agreeable and helpful host.

my problem is one of never enough time, being the Mayor of this little town, as well as the
state certified water and waste water operator, having a rather needy 88yo mother, and a
degenerative spine problem that limits my ability to sleep more than an hour or so at a time
makes for very little time to school myself on how to fix the forum issues as they have come up

over the years, 90% of the time when a problem came up it was with the host moving to a newer
php version,  the forum would go down, i would call the host, have them move the php back to the earlier
version and back up the forum would go.

the last couple of times however it has been other issues, wherein we had to upgrade the forum software
several versions to be compatible with the host.  to do that required help from the simple machines forum
tech guys, and i found one that was able to get the job done, and back up we went again.

this time, i have had to wait until the tech guy had time to work on the problem,  he is much like one of our forum
members taking time to drop over to another forum members shop to work on a problem with a listeroid, or a changfa
however thankfully it is software not hardware and he doesn't have to physically come over to fix the problem.

he being in denmark and i being in kansas, its a good thing he doesn't have to come over! :)

so anyway, again i thank everyone for their patience

hopefully we will be back up by sunday night

bob g

General Discussion / Re: Microcogen down.
« on: August 18, 2022, 11:14:45 PM »
yes i have an update

the problem is based on hostmonsters server software and their liking of wordpress and no real interest in simple machines forum software. 

i have contacted a tech guy that i have used in the past to correct the compatibilities between the two, my end hope is to have the problem not only solved but to move the forum to a more compatible hosting server.

its likely going to take several more days, but my thinking is lets take our time and get it done right, so we don't have to
keep having these things pop up every year or so.

at least that is the goal/hope/oh please let it be so!


thanks for the patience

bob g

nope it was a standard old thick blade butter knife that he used, iirc he said it was about .019"
which was close to what the cam grinder called for back then.

oh yes, the thing clattered like hell as i recall, but it ran like an ape with his tail on fire.

bob g

i can remember a 55 chevy that used to race on the streets around here back in the early 70's
it had a 327 small block with solid lifter cam, and the owner used an old table knife as the feeler gauge
to set the valve lash with while running

and yes there was oil everywhere!

of course we also set points with a match book cover, which was close enough for the girls we ran with.

ah yes, the good ol' days

bob g

i can't tell you how many bent pushrods i and others i have worked with were straightened with a ball peen hammer using the concrete floor as an anvil.  were the perfectly straight afterwards? no... but they really don't need to be perfect to work just fine.

a reasonably straight pushrod will take hundreds of pounds of straight line force without bending. maybe even thousands of pounds.

just take a hammer and tap on it, roll to find the high spot, hammer a bit more, roll and repeat until it rolls fairly well, and it will work like a new one.

only pushrods we ever rejected were cummins pushrods which were/are hollow, all of which would be dropped on the floor and if they rang out like a chime they were good to go, if they had a muffled sound, they were full of oil and we would replace those.

bob g

bob g

General Discussion / Re: Microgen forum down??
« on: July 16, 2022, 11:55:00 PM »
it is working for me!

have you tried it again?

we did an upgrade a couple months ago, and some of the browsers won't work quite right with the new software
microsoft edge works fine for me, but firefox has issues.

iirc you have to include the "https"  with the (s) to get it to come up.

let me know if you continue to have issues

bob g

Listeroid Engines / Re: Valve stem oil usage?
« on: July 03, 2022, 06:30:06 PM »
what are you using for an air cleaner?  if paper, maybe clogged with fine powder causing a vacuum on the intake?

just asking...

bob g

Listeroid Engines / Re: My fix for Listeroid light flicker
« on: July 02, 2022, 03:53:44 PM »
most of the appliances, tv's and such have switch mode power supplies that can take in a wide variety of voltages. they then rectify, chop up and transform to some higher voltage, transform and rectify to whatever voltage(s) their design calls for,  so unless the incoming waveform is outside what they have designed to accept, they do a good job of making it work for their uses.

if i had an issue with flicker, i might consider strapping on an alternator, and a battery, and then feed a small inverter, large enough to cover my lighting and sensitive to flicker loads.

or i might use a step down transformer to bring the st head voltage down to something in the 12 or 24volt nominal range (rectified) and feed that into an inverter to output to my flicker sensitive loads.

another option would be to see if i could feed the st power into a ups such as an old apc unit, the output of which is steady clean pure sine wave that could certainly power any flicker sensitive loads.

all of these options have their level of complication, and their attendant loss of efficiency, but some are good enough to consider.  taking a 10% hit in efficiency on relative light loads, such as lighting might not really be much to be concerned with?  certainly less than taking the same 10% hit on heavier loads?

i mean i wouldn't think of trying to do such a system for motor loads, or resistive loads, that generally have no issues with flicker.

all this based on my wanting or having to use a single cylinder and st head,

if i were to design a unit based on the flicker issues, i might start with a clean sheet approach and maybe start out with a different approach to the problem all together.

bob g

Other Slow Speed Diesels / Re: Hatz E79 - Shop manual
« on: June 02, 2022, 11:28:18 PM »
are you using the hand crank?

if so, try to crank the engine without the compression release, you should have a hell of a time getting it to crank over
that would tell me you have adequate compression

also just because the injector appears to be putting out a decent spray pattern, it may not be doing so when pushing against compression, you might need to increase the injector spring tension a bit.

does the engine put out smoke while you are trying to start it?  if it is putting out smoke you are likely getting enough fuel, but it might not be atomized and increasing the injector spring pressure a bit will help.

the right way to check the injector of course is to take it to an injection shop and have them test and set the pressure that it pops off at.

i also agree that you might well do better to get a pulley mounted and spin the engine up using another engine, sometimes you just need the added rpm to get it to light up the first time.

very hard to diagnose this sort of thing from a keyboard/puter screen

bob g

great video, instills confidence doesn't it?

imagine building an engine up off the floor, a concrete floor at that, that actually looks like it is swept with some

"ok, let's go"

my favorite quote

bob g

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