Frisco Standard - Casting Project

[CI]

During COVID, I tried to get some Hicks marine engine drawings from the museum out west, but everything was shut down, and they never responded to my emails.

I was able to find some material on a Frisco Standard, and so have been 3D modeling that, with the intent of casting the parts one day.

I saw the new thread on the Hicks model on grabcad, and it reminded me of my Frisco Standard work.

The Frisco Standard uses a side shaft, with 2:1 helical gears.
JasonB has provided me with a nice 3D model for the gears I need.

Rather interesting head and valve design on the Frisco Standard, and perhaps a bit more difficult to make than a Hicks.
I like the Hicks design, but have come to like and appreciate the Frisco Standard design also.

I used Solidworks to play around with some molding options on the head.

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[CI]

Here are the JasonB-designed 2:1 helical gears that I 3D printed.
They mesh and operate flawlessly, and can be 3D printed at any size.
I will probably have to use some sort of investment process to cast these gears.
I am not going to try to cut them from blanks.

It is a bit of a trick to design 2:1 helical gears.
I got close to a viable design in Solidworks, but not close enough for a functional set of gears.
JasonB nailed the gear design.

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[CI]

Here is a print I found online somewhere (can't recall where).

I don't have any go-by Frisco Standard drawings, but did find some original patent drawings on the head, and that has been very useful.
The exact scale of this model is to be determined, but I generally like a 2 inch diameter piston minimum.

Supposedly a very reliable and rugged marine engine, with ignitor ignition (no spark plug).

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[CI]

A video of a nice 5hp Frisco Standard running.
It took me a while to get the valve gear geometry worked out on my 3D model.


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<a href="https://www.youtube.com/watch?v=q7l_Vy9BfG4" target="_blank">http://www.youtube.com/watch?v=q7l_Vy9BfG4</a>

[maury]

CI, this looks like a really fun project. I have a 2 cyl Frisco Standard on my bench being worked on intermittently.

I could probably help you with the 2:1 helical gears. I have a Barber Coleman gear hobber that would make short work of them. I've done several 90 deg 2:1 helical designs for other engines.

maury
Lone Star Engine Works Retired

[Jasonb]

Funny enough I got a Facebook message last night showing a pair of slightly larger gears that had been printed with minimal wall thickness and fill that are going to go off for casting, lost PLA.

I've also been working on a farly similar engine layout, this time a Whitehead. It will be a mix of castings Bed and flywheels), cutting form solid (head) and fabrication (jacket/entablature). I was gifted a pair of suitable gears but do have them drawn out so 3D metal printing could be an  option. Castings may or maynot come before Xmas.

Anyone want to place a bet on which will be completed first

[Sanjay F]

Both the Frisco and Whitehead look amazing - should turn out nicely!

I love the chugging noise of the actual engine running in the video 

[CI]

CI, this looks like a really fun project. I have a 2 cyl Frisco Standard on my bench being worked on intermittently.

I could probably help you with the 2:1 helical gears. I have a Barber Coleman gear hobber that would make short work of them. I've done several 90 deg 2:1 helical designs for other engines.

maury
Lone Star Engine Works Retired

Thanks for the offer Maury, I appreciate that.
I have another design in front of this one, but I hope to be able to restart this design one day.
I think we are close enough that I could actually drive over to your house to visit.
How cool would that be ?
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[CI]

I've also been working on a farly similar engine layout, this time a Whitehead. It will be a mix of castings Bed and flywheels), cutting form solid (head) and fabrication (jacket/entablature). I was gifted a pair of suitable gears but do have them drawn out so 3D metal printing could be an  option. Castings may or maynot come before Xmas.

The Whitehead is a nice looking old-style open crankcase engine.
I like that look.
The cam on the end of the sideshaft is interesting, with its associated rocker arm.
I think lost PLA cast gears would work well if the process is done carefully, and the shrinkage worked out.

The Frisco Standard is not on the front burner right now, but I posted some screencaps of how far I got with it, since that interesting 3D model of the Hicks was posted.

I think some of the variations that can be seen in the head design were an attempt to circumvent patents.
I have a "One Lunger" book, and it stated that two companies in California merged, to avoid a patent war, since their engines were so similar.

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