Go Back  R/C Tech Forums > General Forums > 3D Printing Forum
What Did You Print Today? >

What Did You Print Today?

Like Tree225Likes

What Did You Print Today?

Old 01-05-2022, 04:23 PM
  #256  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

Heres my TPU adventures so far this week.. I designed some TPU corner borders and straight end "caps" for my basement track. .. only 2 walls, 2 tops , 2 bottoms and 10% infill so they are plenty impact absorbing.. I thought about doing the entire thing out of TPU borders, but I figure standard pla is fine for the straights..


two shoes likes this.
2wdMod is offline  
Old 01-05-2022, 06:51 PM
  #257  
Tech Adept
iTrader: (21)
 
two shoes's Avatar
 
Join Date: Dec 2015
Location: Rockies
Posts: 233
Trader Rating: 21 (100%+)
Default

Your settings look dialed!

I'm making progress:


2wdMod likes this.
two shoes is offline  
Old 01-08-2022, 05:48 PM
  #258  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

So today I found a really cool print in place differential model.. so I printed it out and the cage broke when trying to break the gears free, try 2 same result.. the cage was only about 2 mm as designed so we beefed things up to 3x5mm on the vertical portions of the cage. printed it out a few times after my fix and it breaks free great everytime without destroying the model!

and heres a link to the fixed model..
https://www.thingiverse.com/thing:5192592
two shoes likes this.
2wdMod is offline  
Old 01-10-2022, 07:50 PM
  #259  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

today I started scaling up components to make a 1/18 scale version of my 1/24 pan design..

RC10Nick and two shoes like this.
2wdMod is offline  
Old 01-11-2022, 06:41 AM
  #260  
Tech Master
iTrader: (9)
 
RC10Nick's Avatar
 
Join Date: Oct 2010
Posts: 1,528
Trader Rating: 9 (100%+)
Default

Originally Posted by 2wdMod View Post
today I started scaling up components to make a 1/18 scale version of my 1/24 pan design.
YES! This is exactly what I've been thinking about - a small pan car that can fit a 270 or 380 sized motor. Hobbyking has a sensored 270 motor and Rocket RC makes a sensored 380 motor. I think either would be awesome in a small pan car. I can't wait to see more.
2wdMod likes this.
RC10Nick is offline  
Old 01-11-2022, 07:38 AM
  #261  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

Originally Posted by RC10Nick View Post
YES! This is exactly what I've been thinking about - a small pan car that can fit a 270 or 380 sized motor. Hobbyking has a sensored 270 motor and Rocket RC makes a sensored 380 motor. I think either would be awesome in a small pan car. I can't wait to see more.
one of my favorite classes to race has always been 1/12.. so needless to say when the robitronics scalpel 1/18 came out I had to have one.. I loved that thing!! on 4cell I could run it in my basement, on 6 cell I could keep pace with 1/12 stock.. versatile size for sure.. thinking standard 2030 sized mini brushless on 1s for the basement duty, and 2s low kv, like 2500/ 3000, for track duty.
2wdMod is offline  
Old 01-13-2022, 10:06 AM
  #262  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

So I have been testing this prototype gear differential I designed.. This is for the 1/24 pan car and will be translated to the 1/18 pan car.. It functions nice at 1/24 scale .. Once again this is 1/24, not 1/28.. Diff gear is 44T mod .5 pitch.. The rear axle diameter is 3/16" OD and is constructed out of some 3/16 thick wall aluminum tubing which fits 3mm shoulder bolts with a fairly close slip fit.. Close enough that a thin layer of CA on a roughed up shoulder bolt with the head cut off and we have a rear axle that has 3mm threaded ends and smooth shoulder for moving parts to ride on the diff side and the axle "run-out" is very negligible to say the least if you use good quality machine bolts.. This is the same basic method I have been using to "widen" mini-Z ball diffs for all my 1/24 projects for quite a few years.. It works great and I have yet to have an issue with a sleeved and glued axle.. The planetary gear that drives the axle is pressed on using a spacer and nut to draw it into its press fit .. I also add a drop or 2 of CA after roughing the end of the tubing where its pressed into the planetary drive hub.. So far I have run about half a dozen batteries through this gear diff and its just getting smoother with every run as it wears in.. Total materials cost to build this rear axle was about $2.50 for the tubing , shoulder bolts and lock nuts, and 5 grams of plastic.. Also Not pictured is a printed left side drive hub ..

2wdMod is offline  
Old Yesterday, 09:27 AM
  #263  
Tech Elite
iTrader: (42)
 
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,676
Trader Rating: 42 (100%+)
Default

I'm going on day 3 of testing the printed gear diff and still going stroong.. After around 15-20 batteries through it its worn in smooth enough that I don't think it's going to get any better..

2wdMod is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 10 votes, 1.30 average.

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.