If you made it according to the print it will not fit properly. The 3,75" dim needs to be approx 4,06", will have the dimension verified during this week.
David's Monocoque Build
- Thread starter David Deschamps
- Start date
JimmyMac
Lifetime Supporter
David
Well done and I look forward to your Monday morning posts.
Good advice above. ^
2033 and it's closure piece are one of the the last two assemblies to fit because the final location will depend upon your door striker height so I would not worry about the precision 0.06" for now. (The door striker height depends upon your fibreglass fit )
I would treat this as a trial fit job for later on, before you box up the B-pillar.
We did the same thing.
Same 3.75" piece in 2009
Well done and I look forward to your Monday morning posts.
Good advice above. ^
2033 and it's closure piece are one of the the last two assemblies to fit because the final location will depend upon your door striker height so I would not worry about the precision 0.06" for now. (The door striker height depends upon your fibreglass fit )
I would treat this as a trial fit job for later on, before you box up the B-pillar.
We did the same thing.
Same 3.75" piece in 2009
I appreciate the advice guys, its a long build so things are bound to change as new information arises and I'm not afraid of remaking parts. Keep the advice coming.
You need to make a small cutout for the fuelcell flange on the rh one. Probably best to do it when assembling. Can put out the dimension for the cutout if you want it.
That would depend on if you are doing a road car with the battery in the left rear, or if your doing a race car or early prototype, that had fuel cell flanges on both of the sill tops?
Or have I miss understood the statement about the cut out?
I think the drawing is in GT40 Uncovered, if I remember correctly.
Ryan
I'll do the cutout closer to assembly time , it's easier to cut out than put back. Dimensions for the cutout would be appreciated.
I would have to check the bill to be sure but off hand 1018, no heat on 2087-8 or 2051-2.
Thanks David.
From the internet....
https://kobelcosteel.com/bs970-specifications-india.html
https://www.atlassteels.com.au/documents/7-EngineeringSteelBar.pdf
Grade 1018 is not in AS 1443. Composition limits listed are according to ASTM A29.
Its been a long time since I last sat in a materials class and its not an area id stake any credentials on, but my understanding is that the carbon and Manganese are what typically effects strength, the quantities of the other elements are related to workability, weldability and machining conditions.
1018 looks like it should work quite well.
I'm going to have to ask the local suppliers what it is exactly that they have, as its not listed on their web site.
Cheers.
Ryan
From the internet....
https://kobelcosteel.com/bs970-specifications-india.html
| BS970 - 1955 SPECIFICATIONS | |||||||||
| Grade | C | Mn | Si | Cr | Ni | Mo | S | P | Others |
| EN1A | 0.07/0.15 | 0.80/1.20 | 0.10 M | 0.20/0.30 | 0.07 | ||||
| EN1B | 0.07/0.15 | 1.00/1.40 | 0.10 M | 0.30/0.60 | 0.06 | ||||
| EN1AL | 0.07/0.15 | 0.80/1.20 | 0.10 M | 0.20/0.30 | 0.07 | Pb-0.15/0.35 | |||
| EN2 | 0.20 M | 0.80 M | 0.06 | 0.06 | |||||
| EN2A | 0.12 M | 0.50 M | 0.05 | 0.05 | |||||
| EN2A/1 | 0.10 M | 0.50 M | 0.04 | 0.04 | |||||
| EN2B | 0.15 M | 0.50 M | 0.05 | 0.05 |
https://www.atlassteels.com.au/documents/7-EngineeringSteelBar.pdf
Grade 1018 is not in AS 1443. Composition limits listed are according to ASTM A29.
| Grade | C | Si | Mn |
| S | Pb | |
| 1018 Min | 0.15 | - | 0.60 | - | - | - | |
| 1018 Max | 0.20 | 0.35 | 0.90 | 0.040 | 0.050 | - |
Its been a long time since I last sat in a materials class and its not an area id stake any credentials on, but my understanding is that the carbon and Manganese are what typically effects strength, the quantities of the other elements are related to workability, weldability and machining conditions.
1018 looks like it should work quite well.
I'm going to have to ask the local suppliers what it is exactly that they have, as its not listed on their web site.
Cheers.
Ryan
I am not used to AISI qualities but seems like 1018 has a higher yield than the en2b. Not a bad feature but requires more violence when forming.
The en2b quality is by todays measures one of the lowest qualities of construction steel.
In european standards it is similar to S235.
The en2b quality is by todays measures one of the lowest qualities of construction steel.
In european standards it is similar to S235.
The 20ga 1018 forms very well and works good with MDF , 18ga is good with MDF to a point. When making a hammerform you need to consider any sharp radius that may need some help from the torch and make a steel hammerform.
Neil
Supporter
If you can find that in an "aluminum killed" or "silicon killed" grade, use it. These have good forming and drawing characteristics.
I'm looking for a clean copy of GT40/1/2443 rear widow frame and GT40/1/2549 glass.
Davidmgbv8
Supporter
Hi David,
Adam from Llama Bite has made a very good window unit. Rather than reinvent the wheel you may want to contact him.
Adam from Llama Bite has made a very good window unit. Rather than reinvent the wheel you may want to contact him.
