Author Topic: Machine works 1/4 Porsche boxer engine  (Read 527 times)

Offline kpnuts

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Machine works 1/4 Porsche boxer engine
« on: March 18, 2022, 06:01:23 AM »
Hi all I got this today its actually a Franzis kit released under licence at a 3/4  the price of a Franzis kit, yes the instructions are not as glossy and there are no beautiful pics of the engine, and yes the box is not all luxury and flashy but the rest of the kit is exactly what you get from Franzis.

First thing I will have to deal with are those god awful carburettors.

I have masked the engine in half (as I intend to do it half see through and half not) we have a machine at work which will add a cast effect to the half that is not going to be see through. The metalizing technique I use need the parts to have a metallic appearance so to get that on the top of the pistons I use my mini lathe and just hold a file over the part whilst it's on (you could do the same with a dremel)













Offline Old Wombat

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Re: Machine works 1/4 Porsche boxer engine
« Reply #1 on: March 18, 2022, 01:47:12 PM »
 :smiley:
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline raafif

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Re: Machine works 1/4 Porsche boxer engine
« Reply #2 on: March 19, 2022, 07:04:29 AM »
Interesting ! but a 1/24th scale Tamiya one is good enough for me.

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #3 on: March 20, 2022, 07:38:43 PM »
So here is the next update.

Thought I would fill that crankshaft (hope that doesn't bite me later its very heavy now.







This is how they would have you assemble the pistons and con rods.



A bit of a problem getting rid of the seam lines like that.

I drilled out one half of the piston with a 4.5mm drill(same size as the gudgeon pins) so I can now glue both halves together and insert the gudgeon pin as would happen on the real thing.



Cleaned up and painted the con rods.





And all installed.




Hell of a lot of play in those pistons, could do with some piston rings (not included with the kit)

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #4 on: March 21, 2022, 03:10:53 AM »
So here is a little update (a trial fit really)








And a trial run.


So here is a little update (a trial fit really)








And a trial run.

https://youtu.be/Z3tnHghHazU

Offline Old Wombat

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Re: Machine works 1/4 Porsche boxer engine
« Reply #5 on: March 21, 2022, 10:28:21 PM »
You going to fix the floppy pistons? ???
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #6 on: March 24, 2022, 04:46:47 AM »
Hi all more work on the boxer engine (definitely have do do something with those jokes of carbs)







https://youtu.be/yGNK8xUldsw

Offline Old Wombat

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Re: Machine works 1/4 Porsche boxer engine
« Reply #7 on: March 24, 2022, 07:47:00 AM »
It's a shame, really; they go to all the trouble of creating this highly detailed engine then just ... give up ... in the final stretch.  Sad! :icon_crap:
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #8 on: March 28, 2022, 03:26:17 AM »
OK so this is how the carbs should look





Here is my start on them, I know loads more detail needed.



Offline Old Wombat

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Re: Machine works 1/4 Porsche boxer engine
« Reply #9 on: March 28, 2022, 08:50:25 AM »
Massive improvement given what was supplied with the kit! :smiley: :smiley:
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #10 on: April 06, 2022, 03:05:28 AM »
OK so more work on the carbs (I know they look a bit granular atm I will work on improving that.



Offline Old Wombat

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Re: Machine works 1/4 Porsche boxer engine
« Reply #11 on: April 06, 2022, 05:16:04 PM »
No point in polishing a turd until it's the right shape! ;)
"This is the Captain. We have a little problem with our engine sequence, so we may experience some slight turbulence and, ah, explode."

Offline kpnuts

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Re: Machine works 1/4 Porsche boxer engine
« Reply #12 on: May 21, 2022, 03:48:32 AM »
Work restarts on the carbs.