LocostUSA.com

Learning how to build Lotus Seven replicas...together!
It is currently May 26, 2020, 2:31 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 20 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: May 21, 2020, 4:35 pm 
Offline
Always Moore!
User avatar

Joined: November 9, 2007, 3:40 pm
Posts: 3988
Location: Pittsburgh, PA
KB58 wrote:
The problem isn't tube fabrication, it's allowing (easier) access to the entire circumference of every tube when welding. If the head of the TIG/MIG can't be maneuvered into position, it's hard to know whether weld strength is sufficient.


The angle is pretty much the same whether it goes to a node or stops 4" away. Round tube makes it even easier since you can get the torch closer to the center.

It is purely to make those tube lengths less critical. You only have to be close enough to do it how they chose to. If you're only building one chassis, make it perfect and have it go to the node.

_________________
-Andrew
Build Log
Youtube


Top
 Profile  
Reply with quote  
PostPosted: May 21, 2020, 5:18 pm 
Offline

Joined: September 22, 2005, 10:29 am
Posts: 466
Again, not meaning to pick on the Goblin. They look WAY safer than most Locosts.


Top
 Profile  
Reply with quote  
PostPosted: May 21, 2020, 8:44 pm 
Offline
User avatar

Joined: July 17, 2008, 9:11 am
Posts: 5425
Location: West Chicago,IL
Since the Goblin is built with round tube, if the diagonals were made to made to point to the intersection, how would they do that? It would require a specific construction order. And possibly not even possible? I don't care to figure that one out. Someone want to?

_________________
Chuck.

“Any suspension will work if you don’t let it.” - Colin Chapman

Visit my ongoing MGB Rustoration log: over HERE

Or my Wankel powered Locost log : over HERE


Top
 Profile  
Reply with quote  
PostPosted: May 21, 2020, 10:48 pm 
Offline
Mid-Engined Maniac

Joined: April 23, 2006, 8:26 pm
Posts: 6043
Location: SoCal
It was described before: one "ear" at each end of the diagonal is cut off, it's slid into position, and the ears welded back on.

_________________
Midlana book: Build this mid-engine Locost!, http://www.midlana.com/
Kimini book: Designing mid-engine cars using FWD drivetrains, http://www.kimini.com/book_info/


Top
 Profile  
Reply with quote  
PostPosted: May 22, 2020, 10:07 am 
Offline
Always Moore!
User avatar

Joined: November 9, 2007, 3:40 pm
Posts: 3988
Location: Pittsburgh, PA
There are two more scenarios:

Often the weld bead that is being covered by the diagonal tube fills most of that space. By the time you round the tips of the ears Kurt described to clear the weld, you can slide them in and there won't be a large gap to fill.

If that fails then it becomes an order of operations - bottom tube first, diagonal second, top tube last.

_________________
-Andrew
Build Log
Youtube


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 20 posts ]  Go to page Previous  1, 2

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
POWERED_BY