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Author Topic: Introduction  (Read 8076 times)

pd

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Re: Introduction
« Reply #15 on: February 04, 2013, 11:26:43 AM »
My motor is an M motor and has the internal crankshaft rotary valve .
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Mike Sal

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Re: Introduction
« Reply #16 on: February 04, 2013, 05:21:27 PM »
Pete, I've never seen an M motor with the rotary valve barrel on the crankshaft.  I can't believe there is any room in the crankcase for the valve barrel.

According to the article written by Hilliker & Knapp (in '92) the crankcase was changed for the M series by making more room for the counterweight, changing the shape where the crank bearings ride, and making the case I.D. match the port hole in the crankshaft.

Any chance you've got some pictures of it while it was apart?
Mike Sal
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pd

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Re: Introduction
« Reply #17 on: February 04, 2013, 08:43:49 PM »
Maybe I can be a bit more clear .

My crank shaft is bored and ported . The counter weight has a hole in it's 'center' about 5/8 - 3/4" . The shaft is bored as far as the carb inlet tunnel and there is a port bored in the side of the shaft ( 90° ) to accept the incoming fuel / air . That port is a bit smaller than the inlet tunnel , if I recall correctly .

My crank shaft is very similar to the one pictured , but some of the dimensions seem a little different , probably due to the picture being an artists rendition .

« Last Edit: February 04, 2013, 08:45:48 PM by pd »
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Mike Sal

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Re: Introduction
« Reply #18 on: February 04, 2013, 09:10:54 PM »
Pete, yes, this is what it should look like.  The earlier motors had an additional "collar" that fit onto the crank & acted as the valve.
Mike Sal
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pd

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Re: Introduction
« Reply #19 on: February 05, 2013, 08:37:59 AM »
That's interesting , Mike . I'd like to see that setup .
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Mike Sal

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Re: Introduction
« Reply #20 on: February 05, 2013, 10:19:57 AM »
Pete, go to page 3 of the "manuals & such" section & open the "1947 manual" that Rick posted.  There is a good factory photo type exploded view of the motor, showing the rotary valve.

(this is another shameless example of how easy it is to find Simplex info when it's put in the right categories.....) :)
Mike Sal
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admin

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Re: Introduction
« Reply #21 on: February 05, 2013, 10:28:44 AM »
Quote from: Mike Sal on February 05, 2013, 10:19:57 AM
Pete, go to page 3 of the "manuals & such" section & open the "1947 manual" that Rick posted.  There is a good factory photo type exploded view of the motor, showing the rotary valve.

(this is another shameless example of how easy it is to find Simplex info when it's put in the right categories.....) :)
Mike Sal

Mike, I am going to attempt to organize some of this info when I get some free time.
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Rick

pd

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Re: Introduction
« Reply #22 on: February 05, 2013, 10:40:12 AM »
"when I get some free time."

How many years before you retire Rick . ;)

Mike , I see they used tapered roller bearings . I wonder why they went away from that . Maybe a $ saving move ?

Anyway , that is an interesting design for the rotary valve . Thanks for pointing that out . :)
« Last Edit: February 05, 2013, 10:46:29 AM by pd »
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admin

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Re: Introduction
« Reply #23 on: February 05, 2013, 10:43:36 AM »
Quote from: pd on February 05, 2013, 10:40:12 AM
"when I get some free time."

How many years before you retire Rick . ;)

Well, I'm thinking 7 more years, but the FAA will kick me out the door in 2022 if I don't leave before then!!
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Rick

Mike Sal

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Re: Introduction
« Reply #24 on: February 05, 2013, 11:02:01 AM »
My original plan was to kick back in 5 years (at 62), but since the whole job change thing happened, it spooked me a little & we'll just have to see (although other than loosing a week's vacation, the job change has been good financially).  Maybe Sonya will finally hit the lucky lottery.....
Mike Sal
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pd

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Re: Introduction
« Reply #25 on: February 05, 2013, 08:11:58 PM »
 I 'officially' retired last year at 62 . Unofficially about 10 years before .

Both you guys are getting kinda 'short' . ::)

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admin

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Re: Introduction
« Reply #26 on: February 05, 2013, 08:13:52 PM »
Quote from: pd on February 05, 2013, 08:11:58 PM
I 'officially' retired last year at 62 . Unofficially about 10 years before .

Both you guys are getting kinda 'short' . ::)



That's what they women tell me!!  LOL
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Rick

pd

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Re: Introduction
« Reply #27 on: February 05, 2013, 08:54:35 PM »
 :-X ;D
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Dominic DiMarko

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Re: Introduction
« Reply #28 on: February 08, 2013, 08:55:16 PM »
Talked to Wayne this week. Nice guy! Gave him the list of everything that I need. I'm hoping that he'll be able to locate that one last item. I don't know what the total is yet, but I'm sure it's not going to be cheap. I've waited a long time to get to this project and I'm giving myself the rest of the year to complete it. It would be nice if there was someone nearby to walk me through it, but there isn't, so that's why I'm giving myself a year. I do have a '48 manual though, and that should help a lot. Just one question, Which of the following three would be correct for my '49? Just a one piece muffler can with a short exhaust pipe or a long double exhaust pipe, or a long single exhaust pipe? Again, this is a '49 "K" motor.
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Mike Sal

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Re: Introduction
« Reply #29 on: February 09, 2013, 07:20:18 PM »
That's a good question.  My guess is both short and long pipes were available (I think there's a brochure picture showing a bike with short pipe).
Mike Sal
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