Go Back  RCU Forums > RC Airplanes > ARF or RTF
Reload this Page >

Tower Hobby .75 engine

Notices
ARF or RTF Discuss ARF (Almost Ready to Fly) radio control airplanes here.

Tower Hobby .75 engine

Old 06-29-2020, 06:23 PM
  #26  
opjose
 
opjose's Avatar
 
Join Date: Nov 2005
Location: Poolesville, MD
Posts: 12,605
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by motoman326 View Post
Old thread but I hope it gets revived....I found one of these in a collection but I need a muffler extension for my biplane. Anybody know what is the OS equivalent?
Thanks
John
If so I don't believe there is an O.S. equivalent. I tried looking for those years ago and found nothing that matches up with the O.S. engines.

The Tower engines were made by the same company that made them for GMS so I often used their stuff or substituted Pitts style GMS mufflers or made my own extension. Someone with a mini mill could knock one out for you.

In your case you want exactly the same spacing as the GMS .76 engines.
Old 06-30-2020, 06:23 PM
  #27  
speedracerntrixie
My Feedback: (29)
 
speedracerntrixie's Avatar
 
Join Date: Jun 2010
Location: Happy Valley, Oregon
Posts: 7,620
Received 41 Likes on 39 Posts
Default

John, can you measure the holes on your muffler center to center. I was working on a project and thought I would need an extension and fabricated a couple. One fits OS .61 FSR and the other OS .61 SF. Both are about 1/2" thick, if either would work I would be more then happy to mail it to you.
Old 06-30-2020, 08:41 PM
  #28  
opjose
 
opjose's Avatar
 
Join Date: Nov 2005
Location: Poolesville, MD
Posts: 12,605
Likes: 0
Received 0 Likes on 0 Posts
Default

Also note you'll need the exhaust hole rectangle dimensions as it is no where near the same size as the O.S. engines.



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


Thread Tools
Search this Thread

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

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.