Model Engine Maker

Engines => From Plans => Topic started by: Shiroth on December 13, 2018, 09:52:17 PM

Title: G Britnell's Fordillac
Post by: Shiroth on December 13, 2018, 09:52:17 PM
So for a little while now I have been Drawing up the fordillac in 3d, and printing it out to cast it. There have been many failed drawing, printings and printed molds.
But I will share what I have so far as it will be quite a long process. Fairly difficult for a beginner such as myself, but I enjoy the challenge.

my 3d drawings all put together. I did end up making my own alterations to it.
(https://cdn.discordapp.com/attachments/501235146729717772/522884531586334731/block1.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/522884570119536640/block2.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/522883778180415488/print2.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/522883913907961856/print4.jpg)


My first attempt at the molds, was planned to be split in half and use cores. In theory it would and could work. but as I recently discovered, the cores have the potential to move during pouring and are a bit questionable to align properly. so I ended up rethinking my methods and doing some alternative researching and planning. After looking at some pictures of the Challenger castings, I had to think about why it was cast in the way that it was. (cut into layers) I believe I have the solution to it and why it was done the way it was. 0 internal cores required. My printings for the new molds just finished earlier today and requires some sanding and working to make them functional.
I intend to use old engines for the castings.

Some pictures of the "abandoned" casting attempts. (I only ever got as far as making molds, cores and assembling the mold before I abandoned it)

(https://cdn.discordapp.com/attachments/501235146729717772/522883774808064004/casting3.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/522883767040344065/cast1.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/522883769611321347/cast2.jpg)


Might not be the easiest or standard way to go about it, but I am learning and enjoying the process.

Title: Re: G Britnell's Fordillac
Post by: steamer on December 13, 2018, 10:59:05 PM
I Like it!   Keep it coming!

Dave
Title: Re: G Britnell's Fordillac
Post by: Steamer5 on December 14, 2018, 07:26:33 AM
Ohhhh this looks like itís going to be fun!

Right onto the  :popcorn: grower & see if I can get another field

Cheers Kerrin
Title: Re: G Britnell's Fordillac
Post by: Ye-Ole Steam Dude on December 14, 2018, 07:40:41 AM
Very interesting project and will fun to follow.

Have a great day,
Thomas
Title: Re: G Britnell's Fordillac
Post by: fumopuc on December 14, 2018, 03:07:42 PM
Very nice, may be I should contact DHL and ask them for their freight rate from Canada to Germany.
Title: Re: G Britnell's Fordillac
Post by: Shiroth on December 14, 2018, 06:14:27 PM
Very nice, may be I should contact DHL and ask them for there freight rate from Canada to Germany.

Why is that?
Title: Re: G Britnell's Fordillac
Post by: Roger B on December 14, 2018, 06:34:37 PM
I think that Achim fancies a set of castings  :)  :stir:

This looks interesting although 3D printing is totally outside my experience (I can do small cars for children though)  :ThumbsUp:
Title: Re: G Britnell's Fordillac
Post by: Shiroth on December 14, 2018, 06:45:33 PM
I think that Achim fancies a set of castings  :)  :stir:

This looks interesting although 3D printing is totally outside my experience (I can do small cars for children though)  :ThumbsUp:

Ah, if that is the case and it does end up working out, I would have to work out some kind of deal with George if he is interested as they are his plans.

3d printing isn't very hard at all, id say that the cad is much harder then printing. the printing is a lot of trouble shooting minor things 99% of the time.
once its setup the way that works best for you, there is minor messing around with it. mostly just re leveling the bed.
Title: Re: G Britnell's Fordillac
Post by: Art K on December 14, 2018, 11:29:43 PM
I have to admit that this sounds like an interesting project. I will be watching along.
Art
Title: Re: G Britnell's Fordillac
Post by: Shiroth on December 15, 2018, 10:54:35 PM
I have the parts sanded a fair amount, I am sure they would release now without too much trouble. there are 5 total different pieces to the molds and I am in the process now of making some frames similar to the test frame in the picture, only a bit larger. then all the sections should align nicely.

The section that is in the frame is a flip able part that makes up 6 of the 10 slices of the block.

Once I have the frames printed out I will have to center the sections in each of the frames. all pinned together.

There are some holes in the sections I will have to fill, due to a lack of editing in cad. (laziness)

Wife doesn't understand what I am doing and I think she is getting tired of hearing about it, so I will bother you guys with it instead  ;D

(https://cdn.discordapp.com/attachments/501235146729717772/523630396223520769/New_molds.jpg)
Title: Re: G Britnell's Fordillac
Post by: stevehuckss396 on December 15, 2018, 11:56:53 PM

Wife doesn't understand what I am doing and I think she is getting tired of hearing about it, so I will bother you guys with it instead  ;D

(https://cdn.discordapp.com/attachments/501235146729717772/523630396223520769/New_molds.jpg)

Glad you did. I find this interesting. Thanks for posting.
Title: Re: G Britnell's Fordillac
Post by: Johnmcc69 on December 16, 2018, 12:57:47 AM
Nice work! I find this interesting as well. Such a nice little engine.
 What is the scale/size of the engine?

 John
Title: Re: G Britnell's Fordillac
Post by: Shiroth on December 16, 2018, 01:06:01 AM
Nice work! I find this interesting as well. Such a nice little engine.
 What is the scale/size of the engine?

 John

The block is about 7" long and just under 5.5" wide.
Actual scaled size, I am not 100% on but I think it is 1/3
Title: Re: G Britnell's Fordillac
Post by: stevehuckss396 on December 16, 2018, 02:23:10 AM
I think it's 3/10. Little bit smaller than 1/3rd but I could be wrong.
Title: Re: G Britnell's Fordillac
Post by: Shiroth on December 19, 2018, 10:12:15 PM
Small update, Printing is taking a little time. Around 7 hours for each frame half.

Nearing the end of the "framing" and onto the assembly of the frames and molds. they will need to be pinned together and some need to be pinned to some flat sheeting. I have officially run out of grey and had to get into the white filament for the last set of frames. Was saving the white for some lithophane pictures. but I think I could spare some for the frames  :D

(https://cdn.discordapp.com/attachments/501235146729717772/525070891856691210/Printing.jpg)

Ignore the scratches and marks on the bed, they are the results of some "murphy" moments.

(https://cdn.discordapp.com/attachments/501235146729717772/525070849276117002/Molds_1.jpg)
Title: Re: G Britnell's Fordillac
Post by: Shiroth on January 03, 2019, 01:09:49 AM
After many different attempts at the second method, all resulting in failure no mater how long and carefully I attempted, they all broke. So I am currently rethinking my method. I may attempt a retry of my first attempt but with a few changes.

All the failures are making me more determined to get this to work and having to rethink my strategy.
I will get this to work!

And each failure is enjoyable so it is not a complete loss
Title: Re: G Britnell's Fordillac
Post by: Admiral_dk on January 03, 2019, 01:27:26 PM
When you even enjoy the failures, everything must be great  ;)
or at least easier to overcome.

Best wishes

Per
Title: Re: G Britnell's Fordillac
Post by: Shiroth on January 07, 2019, 12:00:59 AM
When you even enjoy the failures, everything must be great  ;)
or at least easier to overcome.

Best wishes

Per

Worst parts are the moments of having to wait for something.
Like right now, I ran out of CO2 and had to go buy a larger tank, the paintball tank wasn't cutting it. So now I get to wait on a new regulator before I can continue.
hopeful for this coming weekend I might have something, or something else learned. either way something will happen ;D
Title: Re: G Britnell's Fordillac
Post by: Shiroth on January 10, 2019, 10:24:57 PM
Update!!

I managed to make all my cores and get them all glued together all pretty like, then noticed after my glue dried that my top half of my mold dried out and was quite crumbly. coulda shoulda poured it righ then and delt with it, but I didn't and ended up trying to break out the dry stuff and repair it.

the repaired part work great but the rest got all buggered up. so it required a rebuild of the top half. unfortunately the cores were all glued into the other half.

so learning what not to do, I decided to make the top half withough the bottom section to align it, it turned out good, but the complete alignment failed miserably, though I couldent see in the assembled mold I went for it anyway just to see what would happen.

the results were a failure, but I was pretty positive on that before hand.

(https://cdn.discordapp.com/attachments/501235146729717772/533045554314346517/1.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533045540733190144/2.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533045543790968834/3.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533045546768662545/4.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533045547481825281/5.jpg)

I did not bother to clean it up too great as it was a failure. I think I will keep it around for a bit..
The top half was not aligned properly. turns out that this block is fairly complex to cast for a beginner, but I will continue to work on it.

for now I might just cast the block solid and at least get my project moving.
Title: Re: G Britnell's Fordillac
Post by: Shiroth on January 12, 2019, 04:10:20 AM
Thought I would share another fail.

This time the finish turned out better, and the core material came out a lot easier.
I changed the core sand out and went with a different way of assembling the mold. it worked much smoother and let me make sure it all lined up better.

This time around I went with a smaller feeder and there was a slight volcano effect with a ton of air pockets.
I am fairly happy with the results this time around. though I will have to make some modifications to my water jacket cores, even lined up properly it leaves the wall very thin.
so with some adjustments to that for my next go at it, I hope to at least solve my giant hole problem.

The air pocket explosion is probably due to my smaller feeder and the rate at which I poured.
I feel as though some progress has been made in the quest to pour the block successfully.

(https://cdn.discordapp.com/attachments/501235146729717772/533493922257829898/6.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533493923780493324/7.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533493926720569344/8.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533493930810146826/9.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/533493934601797633/10.jpg)

Any suggestions are more then welcome
Title: Re: G Britnell's Fordillac
Post by: Shiroth on January 31, 2019, 11:04:37 PM
It has been a long 2 weeks now waiting... I ordered some new sand last Tuesday and didn't hear anything for 8 days, upon calling them to check the status of the shipment, it turns out that they had not even process or shipped my order.

I received and email yesterday that it has been shipped and was due to arrive today. unfortunately it hasn't. the waiting game continues...

With the extra time to reflect on the most recent try, I have noticed that the cores float in the aluminum.

My 4 crank cores are about 3/16" too short to properly hold everything in place, so they float up to the top that 3/16" allowing the water jacket cores to float outward closer to the sides. effectively making the walls thinner and more likely to fail.

I have printed out new crank core molds and awaiting the sand.

The last core sand I used is quite brittle. bentonite and moisture in the mix make it harder to work, but much easier to remove from the casting.

So if all goes to plan, I should have more pictures and maybe more learned this weekend.
Title: Re: G Britnell's Fordillac
Post by: RMO on February 01, 2019, 04:12:33 AM
This is fun to watch, keep it up!
Title: Re: G Britnell's Fordillac
Post by: Shiroth on February 02, 2019, 12:13:19 AM
This is fun to watch, keep it up!

Thanks, though it seems as though murphy is after me. this weekend appears to be a bust as UPS has decided to pull a "Canada post" in terms of delivery speeds.
I really wish I had picked it up myself on the 22nd when I ordered it. it is turning into a nightmare just to get something from 1.5 hours away.

 :Mad: :Mad: :Mad:


EDIT.. Got the sand today, 13 days after I had ordered it. then it turns out they sent me the wrong sand.
If I didn't have this bad luck, I wouldn't have any luck at all
 :wallbang: :wallbang: :wallbang: :wallbang: :wallbang: :wallbang: :wallbang:
Title: Re: G Britnell's Fordillac
Post by: Shiroth on February 08, 2019, 03:00:06 AM
Back at it!!

New sand makes great cores. This attempt was almost useable!!
it just decided not to fill in completely.

Cores and Core Molds.
(https://cdn.discordapp.com/attachments/501235146729717772/543261340966453268/1.jpg)

Looked like a winner at the time.
(https://cdn.discordapp.com/attachments/501235146729717772/543261343697076224/2.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/543261348210016256/3.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/543261351351549963/4.jpg)

(https://cdn.discordapp.com/attachments/501235146729717772/543261355126423553/5.jpg)

This try was far from perfect, I could live with some of the broken sand parts.
each attempt is a little time consuming. often very hit and miss on making the mold, too many times it would break and I would have to redo it.

Seems to get closer and closer to success with every pour!
The finish is not too pretty, but I think it adds character.

It has been a rough and frustrating 2 weeks.
Back on track now