New To TT!! ...and 1:120 scale GP35

A bit more progress...

Postby sd80mac » Tue Oct 05, 2010 10:11 pm

A bit more progress. Most of the major shaping is done on the body. Filling in the details is what takes so long. (I knew this would be an intense endeavour!)
Attachments
TT_GP35c.jpg
TT_GP35e.jpg
TT_GP35d.jpg
TT_GP35f.jpg
sd80mac
 
Posts: 138
Joined: Mon Sep 27, 2010 4:55 am

Re: New To TT!! ...and potential 1:120 scale products

Postby ConducTTor » Tue Oct 05, 2010 11:03 pm

Looking very good. And yeah, the details are time consuming..........
What people think: "liberals/conservatives are ruining my country"
What the powerful know: divide and conquer
User avatar
ConducTTor
Site Admin
 
Posts: 8291
Images: 13
Joined: Sat May 23, 2009 4:52 pm
Location: Atlanta GA USA

Re: New To TT!! ...and potential 1:120 scale products

Postby AstroGoat760 » Tue Oct 05, 2010 11:06 pm

ConducTTor wrote:Looking very good. And yeah, the details are time consuming..........


As they say "The Devil is in the Details....."

Looks good so far.
Course Set, Speed - Maximum Warp, PUNCH IT!
User avatar
AstroGoat760
 
Posts: 3155
Images: 0
Joined: Fri Jul 24, 2009 8:07 pm
Location: Bowdon, Georgia, USA

Re: New To TT!! ...and 1:120 scale GP35

Postby sd80mac » Tue Jan 18, 2011 7:36 pm

Too bad I didn't win the other half of the $380million last week or this project would have been done along with quite a few others! Anyhow, I added a bit more detail to the drawing for your perusal. I had originally planned to etch the ALL grilles, but I have since decided to limit the etchings to the fan grilles and blades, steps, handrail stanchions, and maybe the inertial grille.

As far as a mechanism, I was thinking of using 14:1 gear ratio which seems to be the concensus of what HO-scale locomotive manufacturers are utilizing. I been looking at the selection of 10mm and 12mm motors and flywheels from OSO/NWSL as a possible source, and as far as the gearing and gear case I do have some ideas, but don't want to tip my hand just yet. Wheels will most likely come from a ready source, such as the P:87 ones from OSO/NSWL.

Couplers...I know some of you mentioned using the HOn3 Kadees, and others mentioned their wish for a Sergent-style TT coupler. I was looking on the Sergent website and saw this page http://www.sergentengineering.com/HOn3.htm comparing the Kadee 713/714 to the EN87. I also looked at the N-scale McHenry coupler. It may be a tad smaller than scale, but then again, the jump from 1:160 to 1:120 is only a factor of 1.333333e or enlarged by 133.33%, so it could work. I'm just curious about the shank length. Also, I was thinking of making the coupler buffer a separate part and include it as part of a scale coupler box assembly.

Here are updated pictures of the ongoing drawing:
Attachments
TT_GP35.jpg
TT_GP35a.jpg
TT_GP35b.jpg
TT_GP35c.jpg
TT_GP35d.jpg
sd80mac
 
Posts: 138
Joined: Mon Sep 27, 2010 4:55 am

Re: New To TT!! ...and 1:120 scale GP35

Postby sd80mac » Tue Jan 18, 2011 7:41 pm

Two More shots...
Attachments
TT_GP35e.jpg
TT_GP35f.jpg
sd80mac
 
Posts: 138
Joined: Mon Sep 27, 2010 4:55 am

Re: New To TT!! ...and 1:120 scale GP35

Postby ConducTTor » Tue Jan 18, 2011 9:48 pm

It's looking very good. It appears from the site you linked to that the two different couplers will work with each other so that's great. I would design the mounting area to accommodate both.
What people think: "liberals/conservatives are ruining my country"
What the powerful know: divide and conquer
User avatar
ConducTTor
Site Admin
 
Posts: 8291
Images: 13
Joined: Sat May 23, 2009 4:52 pm
Location: Atlanta GA USA

Re: New To TT!! ...and 1:120 scale GP35

Postby CSD » Wed Jan 19, 2011 1:51 am

Looks good, man. The detail looks very fine; I take it you're not going the Shapeways route.
Mark
//S
User avatar
CSD
 
Posts: 2269
Joined: Thu Sep 10, 2009 1:31 pm
Location: St. Albert, Alberta, Canada

Re: New To TT!! ...and 1:120 scale GP35

Postby sd80mac » Wed Jan 19, 2011 2:09 am

Not unless they start offering the high resolution wax printing they have been hinting around. I think I'm going the cast resin route for the shell, etchings for added detail, and cnc or investment cast frame with zamac if I can get the tolerances I need at a reasonable price. I might get quote on injection molding just to see where this would fall price-wise.
CSD wrote:Looks good, man. The detail looks very fine; I take it you're not going the Shapeways route.
Last edited by sd80mac on Thu Mar 31, 2011 6:42 pm, edited 1 time in total.
sd80mac
 
Posts: 138
Joined: Mon Sep 27, 2010 4:55 am

Re: New To TT!! ...and 1:120 scale GP35

Postby scaro » Thu Jan 20, 2011 7:49 pm

very nice work on that shell.
scaro
 

Re: New To TT!! ...and 1:120 scale GP35

Postby scaro » Thu Mar 31, 2011 10:16 am

just realised that it's a phase 1 GP35 ... would be handy ... the ACL ordered a bunch of phase 1s, first customer, in fact, and they interchanged with the G&F (though didn't offer them that much business).

ben
scaro
 

PreviousNext

Return to Prototypes / Models

Who is online

Users browsing this forum: No registered users and 1 guest