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Author Topic: KJ Miller Mods  (Read 138 times)

ShadetreeMotorcycle

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KJ Miller Mods
« on: April 01, 2021, 06:20:04 pm »
My compressor came in the mail today, plugged it in and it Runs strong! But as Wayne said...these Vibrate!... mine walked 12 inches across the table with 30 seconds of run time.
  I was going to just remove the compressor component and discard the rest, but now I think it would be fun to see if I can balance it better. The electric motor is quite high speed.
  The 3rd and 4th photos show the factory counterbalance, I will weigh the piston/rod assembly to see how far the weight is off. The screws on the back wall can be shortened to flush and this will allow clearance if more weight is needed.
  The chalk like powder where the base gasket touches crankcase is about the worst part of this unit,...I suppose condensed water would gather in this spot, should clean up well.

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ShadetreeMotorcycle

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Re: KJ Miller Mods
« Reply #1 on: April 01, 2021, 08:05:51 pm »
Well, she easily came apart this far on the kitchen table...appears to have seen minimal use.
  I am stuck currently at the roll pin holding flywheel on. It's tight. Could easily remove jug but will box it up for work tomorrow where my Good drive pin punches are. Don't want to remove jug(yet) as the piston would be vulnerable to damage in transit to work.

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Alan UK

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Re: KJ Miller Mods
« Reply #2 on: April 02, 2021, 06:35:25 am »
Yours looks to be in very good condition.

Here is mine after a complete strip down and parts washing. Interesting to see that the crank is not shaped on mine.

It's way too easy to lose that little spring when taking it apart!


ShadetreeMotorcycle

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Re: KJ Miller Mods
« Reply #3 on: April 02, 2021, 07:01:59 am »
It's good to see the crank and rod have bronze bushings. That dome head will polish up like chrome.
  Now I have seen yours apart, I believe it is an early variant. I think I may put a little oil cup on my main bearing for fun.
   Thanks for sharing!

Woe is me

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Re: KJ Miller Mods
« Reply #4 on: April 02, 2021, 07:12:35 am »
When I bought mine, everyone I saw had the air come out the side not the top, and the intake was over the
name plate, not facing the motor. Now everyone I see the air is out the top and the intake is pointing towards
the motor under the handle, that mine doesn't have either. The front one is 1968 and the back one is 1966.



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To steam or not to steam, that is the questi,,,,,,Ah shut up and "Steam it, like you mean it."        Tommy.

Alan UK

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Re: KJ Miller Mods
« Reply #5 on: April 02, 2021, 08:00:09 am »
I've been meaning to ask if anyone had a date on these, thanks for the info.

It would seem that there were several different cylinder heads, cylinders and crankcases.

Woe is me

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Re: KJ Miller Mods
« Reply #6 on: April 02, 2021, 08:21:24 am »
I found the dates when I was going through the motors. Take the motor off the base, remove the two screws
holding the bracket on the motor and there it is, month and year. At least for the motor.
To steam or not to steam, that is the questi,,,,,,Ah shut up and "Steam it, like you mean it."        Tommy.

Alan UK

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Re: KJ Miller Mods
« Reply #7 on: April 02, 2021, 10:49:29 am »
Looks like the motors are different on the UK model as there was no markings on the motor casings.

Spent some time on the castings today and they cleaned up really well.

Combination of paint stripper and a brass wire wheel.



komet163b

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Re: KJ Miller Mods
« Reply #8 on: April 02, 2021, 11:46:06 am »
Wow....All in for the repaint parade, but, maybe leave
the dome shiny!

Good Luck,
Wayne


Woe is me

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Re: KJ Miller Mods
« Reply #9 on: April 02, 2021, 06:02:01 pm »
That will be nice Alan, don't forget the primer. Did you wire wheel the piston too?
To steam or not to steam, that is the questi,,,,,,Ah shut up and "Steam it, like you mean it."        Tommy.

txlabman

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Re: KJ Miller Mods
« Reply #10 on: April 02, 2021, 06:33:06 pm »
I guess I am going to have to get on the train and get me one of these. 🤠

Very nice clean up Alan. 

ShadetreeMotorcycle

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Re: KJ Miller Mods
« Reply #11 on: April 02, 2021, 06:39:08 pm »
Allen is ahead of me. I got put on Unlimited overtime this week so it's wrecking my engine time...however I did manage to remove my stubborn roll pin today and get the engine torn down. Just sharing this photo so "we" can see the difference in the model years. I also have not spotted a date on my unit.
    The machine work on the cast iron Cylinder is nice, particular the bore!
    The second photo shows a large flake of metal I pulled off my rod, it was hanging by a thread so I am glad I tore this unit down as if it had let go it could have done damage. It is casting flash that did not get removed.

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Alan UK

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Re: KJ Miller Mods
« Reply #12 on: April 03, 2021, 04:15:11 am »
I would agree, the machining on the castings is very good.

I didn't use the wire wheel on the piston, just some very fine wire wool.

All the parts to be painted will etch primed first.

Charlie, you should definitely get one, they are great machines either as a steam accessory or a stand alone unit.

classixs

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Re: KJ Miller Mods
« Reply #13 on: April 07, 2021, 08:58:41 am »
Any progress yet Ben?
Cheers
Jan
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ShadetreeMotorcycle

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Re: KJ Miller Mods
« Reply #14 on: April 07, 2021, 04:44:14 pm »
Any progress yet Ben?
Sadly No...with my current heavy work employment schedule the last thing I want to do is stay late and work on model engine projects...I should have them caught up in a week or 2 so fun stuff can resume!
  I am not trying at all to keep my unit original, so I have been considering source a nicer looking spoked flywheel as an upgrade.

 

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