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Post by Patrick on Oct 28, 2017 15:29:21 GMT -5
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Post by indy on Oct 28, 2017 19:29:20 GMT -5
Looks good, Patrick. Is this a four or eight cylinder? Was just surprised to see eight pipes on an F2 car. But I’m usually in the dark about what powered F2 cars in the 60s.
Jordan
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Post by racerbrown on Oct 28, 2017 20:27:35 GMT -5
cool stuff here! good timing for a Frankenstein engine.  duane |
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Post by Patrick on Oct 28, 2017 21:07:12 GMT -5
Looks good, Patrick. Is this a four or eight cylinder? Was just surprised to see eight pipes on an F2 car. But I’m usually in the dark about what powered F2 cars in the 60s. Jordan An interesting engine this BMW! It's a 4 with 8 intakes and 8 exhausts! Patrick |
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Post by drums01 on Oct 30, 2017 18:33:24 GMT -5
This is interesting; looking good so far.....
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Post by indy on Nov 1, 2017 9:57:58 GMT -5
An interesting engine this BMW! It's a 4 with 8 intakes and 8 exhausts! Patrick Wow, that is interesting. I love variations like this to make something stand out even more than usual. Jordan |
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Post by flashman on Nov 1, 2017 12:37:58 GMT -5
Another fascinating WIP, Patrick!
What size solder do you use for this and other similar projects? Other WIP's I see often don't mention the size solder they use when scratchbuilding headers. I know, many people just say "use whatever size looks right", but when I'm looking at the spools of solder in the hardware store, I haven't a clue which size "looks right". Can you give us the size(s) you tend to use, as a guide for us?
Thanks,
Cameron
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Post by Patrick on Dec 14, 2017 13:59:50 GMT -5
Well, the dark time(winter depression) is here again and haven't been able to work on any projects. The front suspension attachment points seem to be a 3/8" too short. So a redesign is in order. I'll be back on it again soon. I know some of you understand.
Patrick
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Post by dustymojave on Jan 1, 2018 1:08:27 GMT -5
Issues such as this are why I ensure ALL fabrication is completed before throwing paint around. Works that way in the full scale world of race cars too. I have many times had difficulties with clients who wanted to paint the race car before it's built. The car is looking good though.
How much of a bell housing do you have between the back of the block and the front of the differential case? That could account for much of your short fall. That bellhousing would be forward of the rear diaphragm
For the size of solder to use, most engines use exhaust primary tubes (the ones that connect to the exhaust ports of the cylinder head{s}) that are from 1.5" to 2" diameter. Say a 63 Lotus Ford Indy car with a 255ci V8, the headers were 1.5". A Can Am McLaren Mk8 with a big block Chevy or a 410-450ci aluminum block small block Chevy in a 1980s or later Sprint car, the headers would be 2" diameter. A VW midget of the 1980s with a 2-liter engine or a 1960s Chevy small block Chevy or Ford V8 would have 1.75" headers. This 1.6l 4 cylinder would probably have 1.5" headers. They MIGHT have been 1-1/4" to 1-3/8" as it's a 4-valve per cylinder engine with separate ports on opposite sides of the head.
Since 1" = 25.4mm, inch dimensions in 1/24 or 1/25 scale come close to 1" = 1mm in scale. Not exact, but for many purposes, it comes close. 1/4" = .010" = 1/4 or 0.25mm
So... Say you want 1.5" header tubes. You would need 1.5mm or 1/16" diameter solder. For 2" headers, you need 2mm solder. 1/8" makes 3" so that's more than a little overboard for the primary tubes. You can work out whatever you need in between those and based on what sizes of solder you can find.
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Post by flashman on Jan 2, 2018 11:19:29 GMT -5
dusty, Thanks much for the great header/solder size info. That's exactly what I was hoping for!  Cameron |
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