Community
Search
Notices
Engine Conversions Discuss all aspects of engine conversions in this forum

Who's seen one of these?

Thread Tools
 
Search this Thread
 
Old 01-21-2007 | 01:08 PM
  #1  
Thread Starter
My Feedback: (40)
 
Joined: Dec 2001
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
From: Austin, TX
Default Who's seen one of these?


Do any of the members here recognize or have any background (even anecdotal) with a Roper 70?
This is the first and only one I've seen.

I bought this one years ago online and was severely disappointe to learn that it wasn't really NIB as advertised. Needless to after determining that the seller had disappeared into cyberspace I put it in a box and stored it in my garage for the past several years. Lesson learned...

After reading through the conversions forum I'm thinking this may still have potential as a gas / glow conversion.
The manual indicates it's a 69cc discplacement. It appears to be a reed valve induction under the carb.
It is heavy (my scale only goes to 5 lbs) hence my intention to eliminate the giant coil and flywheel.

Who has some experience with one of these?

Thanks
Attached Thumbnails Click image for larger version

Name:	Xu62854.jpg
Views:	30
Size:	73.3 KB
ID:	603169   Click image for larger version

Name:	Ca80187.jpg
Views:	23
Size:	72.4 KB
ID:	603170   Click image for larger version

Name:	Ca81577.jpg
Views:	26
Size:	56.9 KB
ID:	603171  
Old 01-21-2007 | 02:44 PM
  #2  
Antique's Avatar
Senior Member
My Feedback: (4)
 
Joined: Jul 2002
Posts: 9,825
Likes: 0
Received 1 Like on 1 Post
From: Somewhere, DC
Default RE: Who's seen one of these?

Me..It was called a Big Roper, sold by Gene Horner....I converted at least one about 15 years ago...You haven't seen vibration until you run one of these, the carb needles can't be set with the engine running...The con rod is 2 piece with loose rollers on the big end....
Old 01-21-2007 | 03:31 PM
  #3  
 
Joined: Jan 2002
Posts: 12,957
Received 4 Likes on 4 Posts
From: Hesperia Michigan, MI
Default RE: Who's seen one of these?

Just think how much more it would viabrate if you took that heavy flywheel off. WOW!!! Capt,n
Old 01-21-2007 | 06:30 PM
  #4  
KenLambert's Avatar
My Feedback: (107)
 
Joined: Dec 2001
Posts: 886
Likes: 0
Received 1 Like on 1 Post
From: Augusta i i IL
Default RE: Who's seen one of these?

those were some of my first conversions, I still have one .

I am going home about tuesday( foamcut )
Old 01-21-2007 | 08:33 PM
  #5  
Thread Starter
My Feedback: (40)
 
Joined: Dec 2001
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
From: Austin, TX
Default RE: Who's seen one of these?


Ken,

Any feedback you can provide on the Roper is greatly appreciated.

Thanks
Old 01-21-2007 | 08:36 PM
  #6  
Thread Starter
My Feedback: (40)
 
Joined: Dec 2001
Posts: 178
Likes: 0
Received 0 Likes on 0 Posts
From: Austin, TX
Default RE: Who's seen one of these?


Ralph,

Thanks for that input. Now I know what I'm in for.


captainjohn,

Do you know of any good threads addressing the balancing of the rotating assembly?
I learned how to use a degree wheel to check port timing last week so now it looks like I need to learn more about balancing. I learn more here everyday...

Thanks

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 Off
Pingbacks are Off
Refbacks are On



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.