Beyond The Sprues

Current and Finished Projects => Physical Models => Land => Topic started by: kpnuts on March 18, 2022, 06:01:23 AM

Title: Machine works 1/4 Porsche boxer engine
Post by: kpnuts 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)

(https://i.ibb.co/fv5NwLF/IMG-0174.jpg)

(https://i.ibb.co/zfy99cc/IMG-0171.jpg)

(https://i.ibb.co/grq8sfK/IMG-0188.jpg)
(https://i.ibb.co/pzkhRSf/IMG-0187.jpg)
(https://i.ibb.co/DtV9N4q/IMG-0186.jpg)
(https://i.ibb.co/SdrrYtK/IMG-0185.jpg)
(https://i.ibb.co/DRwmhNc/IMG-0183.jpg)
(https://i.ibb.co/KwyQWkC/IMG-0184.jpg)
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: Old Wombat on March 18, 2022, 01:47:12 PM: :smiley:
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: raafif on March 19, 2022, 07:04:29 AM: Interesting ! but a 1/24th scale Tamiya one is good enough for me.
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts 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.

(https://i.ibb.co/0XrRHsb/IMG-0172.jpg)

(https://i.ibb.co/DfsdXpW/IMG-0241.jpg)

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

(https://i.ibb.co/TYWCLkL/IMG-0246.jpg)

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.

(https://i.ibb.co/H77zJnT/IMG-0247.jpg)

Cleaned up and painted the con rods.

(https://i.ibb.co/PjkDT4m/IMG-0240.jpg)

(https://i.ibb.co/jf5j39x/IMG-0242.jpg)

And all installed.

(https://i.ibb.co/SRF10Sv/IMG-0244.jpg)
(https://i.ibb.co/LQWdHxL/IMG-0243.jpg)

Hell of a lot of play in those pistons, could do with some piston rings (not included with the kit)
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts on March 21, 2022, 03:10:53 AM: So here is a little update (a trial fit really)

(https://i.ibb.co/MP332Lt/IMG-0270.jpg)
(https://i.ibb.co/ZHZnVmF/IMG-0269.jpg)
(https://i.ibb.co/Vt7jLWf/IMG-0268.jpg)
(https://i.ibb.co/c1LNLr3/IMG-0267.jpg)
(https://i.ibb.co/QjSyLnG/IMG-0266.jpg)
(https://i.ibb.co/FWfzTfP/IMG-0264.jpg)

And a trial run.

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

(https://i.ibb.co/MP332Lt/IMG-0270.jpg)
(https://i.ibb.co/ZHZnVmF/IMG-0269.jpg)
(https://i.ibb.co/Vt7jLWf/IMG-0268.jpg)
(https://i.ibb.co/c1LNLr3/IMG-0267.jpg)
(https://i.ibb.co/QjSyLnG/IMG-0266.jpg)
(https://i.ibb.co/FWfzTfP/IMG-0264.jpg)

And a trial run.

https://youtu.be/Z3tnHghHazU
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: Old Wombat on March 21, 2022, 10:28:21 PM: You going to fix the floppy pistons? ???
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts 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://i.ibb.co/qDZktzQ/IMG-0303.jpg)
(https://i.ibb.co/NtyX6KB/IMG-0302.jpg)
(https://i.ibb.co/L8skRbS/IMG-0301.jpg)
(https://i.ibb.co/SQnVVG0/IMG-0300.jpg)
(https://i.ibb.co/N28sNBn/IMG-0298.jpg)

https://youtu.be/yGNK8xUldsw
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: Old Wombat 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:
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts on March 28, 2022, 03:26:17 AM: OK so this is how the carbs should look

(https://i.ibb.co/hRtcQTZ/IMG-0325.jpg)
(https://i.ibb.co/vzt2fRX/IMG-0326.jpg)
(https://i.ibb.co/1zYxs13/IMG-0327.jpg)

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

(https://i.ibb.co/SDSVfn2/IMG-0348.jpg)
(https://i.ibb.co/1n921Kr/IMG-0349.jpg)
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: Old Wombat on March 28, 2022, 08:50:25 AM: Massive improvement given what was supplied with the kit! :smiley: :smiley:
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts 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.

(https://i.ibb.co/p0gVvgL/IMG-0367.jpg)
(https://i.ibb.co/x5G5xq7/IMG-0368.jpg)
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: Old Wombat on April 06, 2022, 05:16:04 PM: No point in polishing a turd until it's the right shape! ;)
Title: Re: Machine works 1/4 Porsche boxer engine
Post by: kpnuts on May 21, 2022, 03:48:32 AM: Work restarts on the carbs.
(https://i.ibb.co/b704fxy/IMG-0781.jpg)
(https://i.ibb.co/7bDr4Ng/IMG-0779.jpg)
(https://i.ibb.co/4jRFRmW/IMG-0780.jpg)