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 Fiat SB4 Eldridge (Mefistofele)

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Zbuckster
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Wed 25 Nov 2015, 5:42 pm

I have had that happen to my paint jobs. I was told by other modelers that the reason is not letting the paint gas out before adding clear coat. Not sure if that;s true but I do see how it could be. The SABA guys have mostly been at this a lot longer than me and are pretty sharp.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Wed 25 Nov 2015, 7:01 pm

Speed Racer 65 wrote:
Maybe the Fiat had a leather covered body like the Blower Bentley had a cloth body....

Sounds like a great excuse Mitch!!!

GaryDainton wrote:
These things are sent to try us AL.
Hope they can sort you out with new parts.

I heard back from them today. They say they can supply me with a new main body plus the two bonnet halves, for approx 10 Euros including shipping. The proviso being 'if available'. So I'm just waiting to here back from them.

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Wed 25 Nov 2015, 9:09 pm

Great news, good luck Al.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 3:05 am

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 6:27 pm

On to the heart of the beast, the engine and what a beast of an engine it is!!! It's enormous!!!

6 potter, single ohc and twenty four valves......... very advanced for 1923 or earlier. (The engine is an aero engine)

Here is a mock up:





The kit provides actual metal springs to represent the valve springs BUT they are 3 coils short of the real deal and therefore look a little spindly. May have to look for some alternative, maybe cheap Biro's!!!  (need 24!! LOL) Any other source ideas guys?

The springs are also too shiny, so will need to be dulled down some. Any suggestions other than paint would be most welcome.

You will notice too, that there are no valve stems inside the springs. I'll need to take care of that too. How on Earth, could Italeri miss including those!!

Installing just the one valve spring for this mock up, gave me palpitations in case it was claimed by the carpet monster. Installing valve stems first, should, I hope make it a little safer!

The kit provides the nuts detail marked with a red arrow in this photo but not the ones marked with the yellow arrow.



Anyone know of a source of tiny nuts. Styrene/cast metal etc?  If not I may consider making some from hex styrene rod. The real problem with that is getting them all the same thickness, even with a guillotine!

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Last edited by Skid on Thu 26 Nov 2015, 10:33 pm; edited 1 time in total
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GaryDainton
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 7:39 pm

I can give you a source for 1/24 photo etch nuts Al.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 7:43 pm

Go on then!!!

A big nut in 1:24 can still be a medium nut in 1:12

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 7:45 pm

You'll get loads in a Topic, Ill post it in a few mins. LOL
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 7:53 pm

Scroll down to 4th from bottom. Some great stuff all in 1/24th on here, worth a good look for light lenses, tools etc.

http://www.kitformservices.com/photoetch.html
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 7:58 pm

Not good enough Gary, that took eight minutes!!!

Cheers, off to have a gander now.

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 8:06 pm

Hmmmm................. they look interesting Gary. My only concern would be thickness but then I suppose they could be stacked.

Bookmarked the site.

Ta!!

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 8:36 pm

Very welcome Al, I'll try to be quicker next time.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Thu 26 Nov 2015, 10:19 pm

Al, here's a link to miniature nuts that might be the size you need. If the size works, you'll probabley need to find a vendor who will sell you a small amount. Don't figure you'll need a gross.

http://www.morris01550.com/hex.htm
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 12:39 am

Thanks for that Dave. Got that one book marked too.

Three of the cylinders had quite bad sink marks....



.... one on two sides....



.... and all visible on the finished engine.

Sooooo!!!! out came the Super glue and baking powder!!! LOL.....



....some sanding and they are history!






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RetiredMike
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 3:52 am

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 3:56 am

Could you wind some ultra fine solder around a styrene rod? The real engine looks like the springs are a larger diameter, possibly with a set of inner springs, thus blocking the view of the valve stems.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 11:18 am

Thanks very much for that link Mike but as I would need 24 (three packs) of the M.06 size, £27.00 is a bit too spendy for such a small detail. I'll probably end up making some from hexagonal styrene rod.

Your idea on the springs is a good one but I think I'll try winding along the threads along a suitable size bolt instead. I think it may be easier to get the spacing more consistent.

Thanks for the suggestion.

Again on the springs, I think it probably used single springs. Check this video at 2.20.


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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 11:36 am

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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 4:19 pm

Great video Skid. What a monster!
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 5:05 pm

Sheesh, what an ordeal just to start it up...

I doubt it had double valve springs. As big as all the parts are I doubt it saw an RPM much over 2500.

That one shot in the video reminded me of a story my grandpa used to tell. There was and guy back in his home town that had a model T and when he parked it he put a coffee tin can under it to catch the oil drippings. When he got ready to go he would pour the oil from the can back in the engine and head on his way...

I guess if you can't fix the leak then that's the next best thing.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Fri 27 Nov 2015, 5:30 pm

Al I would try putting the valve springs on with the model in a box of some kind. Then if the spring takes off the box will confine it. Just a thought.
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Sat 28 Nov 2015, 6:14 pm

Speed Racer 65 wrote:

I doubt it had double valve springs. As big as all the parts are I doubt it saw an RPM much over 2500.

Not even that Mitch, Wiki has it at 300 bhp at 1700 rpm.

Zbuckster wrote:
Al I would try putting the valve springs on with the model in a box of some kind. Then if the spring takes off the box will confine it. Just a thought.

And it's a good one Buck for the original kit springs but I think I'm going to make my own.

I wound some 28 gauge beading wire around some 2mm styrene rod. It's JUST not large enough in diameter to fit cleanly over the top shoulder, so I'll probably have to open up the top coil a tad to get it to seat properly.

What do you think guys?


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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Sat 28 Nov 2015, 6:42 pm

You may experience coil bind with that spring Al....

Looks like you went from not enough to too many....
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Sat 28 Nov 2015, 6:43 pm

Oh and CHAIN! I want to see the CHAIN go together!
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PostSubject: Re: Fiat SB4 Eldridge (Mefistofele)   Sat 28 Nov 2015, 6:59 pm

Making the first spring was easy enough, however getting the next 23 to be exactly the same, is not so easy AND very repetitive. And I think most of you know, I HATE repetitive work!!

So I went looking for some ready made springs and came up with these:



2mm ID and 7-10mm long.

And at just £2.59 for 50, they HAVE to be worth a punt!!

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