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Author Topic: Simplex 45-47 H Motor Build  (Read 21669 times)

ndian22

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Re: Simplex 45-47 H Motor Build
« Reply #15 on: August 21, 2016, 02:16:45 PM »
Really nice progress!  Rick C.
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Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #16 on: August 22, 2016, 04:55:06 PM »
Hi Guys,

Question: I think that the right hand grip but is it a throttle. That would make it a forward (clockwise rotation)? If it is on the left then it would be a throttle back. Not really sure on that. I have a 1945 manual that states that the throttle is on the right? What do you guys know/think?
Thanks,
Dave C
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Ricks

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Re: Simplex 45-47 H Motor Build
« Reply #17 on: August 22, 2016, 05:02:06 PM »
Throttle on right, compression release on left.  The throttle works just like every other motorcycle out there, twist back to open, roll forward to close.
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Rick

Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #18 on: August 22, 2016, 05:20:26 PM »
Rick,

On my twist grips the cam is cut in the same direction. Making the identical so when I assemble them the right moves away from the center of the bars (lengthening the cable) when twisted forward not back toward the rider. The left is the opposite, toward the rider lengthens the cable.
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kartjockey

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Re: Simplex 45-47 H Motor Build
« Reply #19 on: August 22, 2016, 05:48:50 PM »
how interesting.....eh Rick S.!
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Ricks

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Re: Simplex 45-47 H Motor Build
« Reply #20 on: August 22, 2016, 06:18:58 PM »
Quote from: kartjockey on August 22, 2016, 05:48:50 PM
how interesting.....eh Rick S.!

 Tom, did you ever turn yours around on the carburetor mount?

Read the 1947 Manual posted,  in the operation section, it states how the throttle works..  I stand with Wayne that you have the throttle cable swivel on the wrong side.
« Last Edit: August 22, 2016, 06:26:38 PM by RickS »
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Rick

kartjockey

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Re: Simplex 45-47 H Motor Build
« Reply #21 on: August 22, 2016, 06:59:19 PM »
Dave C. is your throttle cable a solid wire or a braided cable.?   
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Ricks

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Re: Simplex 45-47 H Motor Build
« Reply #22 on: August 22, 2016, 08:48:43 PM »
Here is the section from the manual.
« Last Edit: August 22, 2016, 08:51:08 PM by RickS »
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Rick

Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #23 on: August 23, 2016, 01:50:13 AM »
Both the pressure relief and the throttle are braided.
Rick thanks for grabbing that section from the manual. I did see that last night. Sorry I didn't respond last night. I start my day pretty early.
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Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #24 on: August 23, 2016, 01:57:25 AM »
Does anyone know if the cam surfaces should be cut in the opposite direction on each twist grip? If they are then I have two left hand grips. If not I can't see a different way to assembly them. The pin that retains the outer cable is closest to the end of the bar and is captured by the twist grip itself and the cam pin is retained by the slip collar that slides over the twist grip closer to center of the bars.
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Ricks

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Re: Simplex 45-47 H Motor Build
« Reply #25 on: August 23, 2016, 05:08:32 AM »
Quote from: cocina_Simplex_47 on August 23, 2016, 01:57:25 AM
Does anyone know if the cam surfaces should be cut in the opposite direction on each twist grip? If they are then I have two left hand grips. If not I can't see a different way to assembly them. The pin that retains the outer cable is closest to the end of the bar and is captured by the twist grip itself and the cam pin is retained by the slip collar that slides over the twist grip closer to center of the bars.

KartJockey and I had this discussion with Wayne at Portland several years ago.  I seem to remember the cable swivel on the carburetor needs to be turned to the other side.  The cable should pull the carburetor open, not push.  I don't have an early bike with the MS carburetor, so I can not just go look.
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Rick

pd

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Re: Simplex 45-47 H Motor Build
« Reply #26 on: August 23, 2016, 05:23:11 AM »
Logically , if the right and left tubes are regulated alike and both roll back to open , the slots have to be cut in opposite directions .

Pete . :)
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Ricks

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Re: Simplex 45-47 H Motor Build
« Reply #27 on: August 23, 2016, 06:15:56 AM »
Dave, just to clarify, when you twist the throttle in the normal direction, does the cable get shorter?
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Rick

Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #28 on: August 23, 2016, 08:57:45 AM »
Pete,
I agree.

Rick,
To answer your question, when you turn it in the normal direction the twist grip moves toward the goose neck making the cable shorter.

I have not attempted to connect the cable to the carburetor yet. I just going on the logic that the cable should move away from the goose neck, making the cable longer.
If this isn't clear I can take a quick little video of the movement. Or if you are on a iPhone we could facetime...
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Cocina_47

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Re: Simplex 45-47 H Motor Build
« Reply #29 on: August 23, 2016, 03:55:03 PM »
Here is the video. Let's see if this works.
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