Author Topic: Flat twin 60cc  (Read 4397 times)

Offline glorfindel

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Re: Flat twin 60cc
« Reply #30 on: April 30, 2021, 07:30:20 PM »
Cam shaft and linkrod are done.

I have to make a fixture to finish the  MasterRod.

Rings are cut to size and waiting for heat threatment.

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Offline glorfindel

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Re: Flat twin 60cc
« Reply #31 on: July 30, 2021, 05:04:36 PM »
Hi there!!!

Here is where i am.

Almost finished the Flat twin, minus the valves. The cnc that i use to make them was crashed(students can be hard on machines lol!!) so, i'll have to wait t'ill september.

I'm working on the "Boxer"  configuration of my flat engine.

I never made a one piece crank and i never made a 2 pieces conrods. So that will be fun!!

Any tricks about one piece crank??

Finally, im slowly gathering infos about Wankel engine, wich probably will be my next project after the Boxer.

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Offline Roger B

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Re: Flat twin 60cc
« Reply #32 on: July 30, 2021, 07:07:43 PM »
I am strictly hand machines and tend to use a Keats angle plate for making one piece crankshafts. One build is here:

https://www.modelenginemaker.com/index.php/topic,7883.240.html
Best regards

Roger

Offline Roger B

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Re: Flat twin 60cc
« Reply #33 on: July 30, 2021, 07:12:23 PM »
The 180° version is here:

https://www.modelenginemaker.com/index.php/topic,7883.0.html

I'm enjoying all the CNC work, it's something I need to look into one day  :headscratch:
Best regards

Roger

Offline glorfindel

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Re: Flat twin 60cc
« Reply #34 on: July 31, 2021, 01:01:33 AM »
I am strictly hand machines and tend to use a Keats angle plate for making one piece crankshafts. One build is here:

https://www.modelenginemaker.com/index.php/topic,7883.240.html
The 180° version is here:

https://www.modelenginemaker.com/index.php/topic,7883.0.html

I'm enjoying all the CNC work, it's something I need to look into one day  :headscratch:
Thx for the links!!!

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Offline glorfindel

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Re: Flat twin 60cc
« Reply #35 on: November 10, 2021, 04:07:52 PM »
It should fire tomorrow!!!!

Putted a small prop for cooling and the support system is ready!!

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Offline Admiral_dk

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Re: Flat twin 60cc
« Reply #36 on: November 10, 2021, 07:27:09 PM »
Looks great - so we hope that you will have success starting and running it  :cheers:

Per

Offline Roger B

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Re: Flat twin 60cc
« Reply #37 on: November 10, 2021, 07:34:59 PM »
I eagerly await the video  :)  :)  :)
Best regards

Roger

Offline eccentric

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Re: Flat twin 60cc
« Reply #38 on: November 10, 2021, 11:12:23 PM »
Wow, she is a beauty!  Great job.

Offline Art K

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Re: Flat twin 60cc
« Reply #39 on: November 12, 2021, 02:31:07 AM »
Looks very good! I have been contemplating a flat twin version of my Val engine. The benefit of the two throw crank on it is balance, less vibration. Up to this point I've only made single cylinder engines. I have tried to avoid built up cranks. I couldn't do that with Val but minimized the amount of pieces. It does have an overhung crank like your flat twin. I look forward to hearing it run!
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline glorfindel

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Re: Flat twin 60cc
« Reply #40 on: November 12, 2021, 04:47:33 PM »
Update!!

It didnt start! Lol!!!

I have compression (a lot), fuel and fire....

So i think my timing is off or something like that, or carburator setup....

I "unplugged" one cylinder 'cause the drill was barely able to swing both cylinders lol!!

It suck, my other engines fired up first time, this one will need some work!!



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« Last Edit: November 12, 2021, 10:29:15 PM by glorfindel »