Go Back  RCU Forums > RC Airplanes > Extreme Speed Prop Planes
Reload this Page >

Seagull Harmon Rocket / TT .61 Pro

Notices
Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Seagull Harmon Rocket / TT .61 Pro

Old 01-26-2009, 10:10 AM
  #1  
Flyboy76
Thread Starter
My Feedback: (14)
 
Flyboy76's Avatar
 
Join Date: Aug 2005
Location: Go Riders Go!!!!!!!, CANADA
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Default Seagull Harmon Rocket / TT .61 Pro

Hello all, first off, i know that this would be a severe stretch to put in this category but i have some ?????? What kind of difference can i expect between a pitts style muffler and a tuned pipe for this combination?? I know that there are many different choices of engines which would have worked better for speed but the wife got me this setup for xmas and i wouldn't dare hurt her feelings by not using it. She's actually checked in on me a couple times while i was working on it to see how it was going.

Thanks in advance

Geoff
Old 01-26-2009, 10:20 AM
  #2  
fcomer84
Senior Member
 
fcomer84's Avatar
 
Join Date: Jan 2006
Location: Alabaster, AL
Posts: 311
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

My one experience with a Pitts-style muffler was a Pro .46 on an Edge 540. I had run the engine on another plane with the stock muffler and it was strong. Same thing with the Pitts - ran great!
Old 01-26-2009, 10:44 AM
  #3  
Flyboy76
Thread Starter
My Feedback: (14)
 
Flyboy76's Avatar
 
Join Date: Aug 2005
Location: Go Riders Go!!!!!!!, CANADA
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

Ya i've had a pitts style on a couple of TT Pro .46's and they ran flawless, i'm just wondering if i will experience much speed gain with a tuned pipe over the pitts.
Old 01-26-2009, 11:30 AM
  #4  
Flyboy Dave
My Feedback: (21)
 
Flyboy Dave's Avatar
 
Join Date: Mar 2002
Location: Pinon Hills, CA
Posts: 13,847
Received 5 Likes on 5 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

....the tuned pipe will give a good boost over the stock muffler, and an
even better boost over a Pitts muffler, any day of the week.

The tuned piped gives a racing look as well, and a better sound.

FBD.
Attached Thumbnails Click image for larger version

Name:	Pn37005.jpg
Views:	30
Size:	152.7 KB
ID:	1119985   Click image for larger version

Name:	Ql33753.jpg
Views:	25
Size:	150.6 KB
ID:	1119986   Click image for larger version

Name:	Ot47732.jpg
Views:	21
Size:	142.0 KB
ID:	1119987  
Old 01-26-2009, 12:08 PM
  #5  
Flyboy76
Thread Starter
My Feedback: (14)
 
Flyboy76's Avatar
 
Join Date: Aug 2005
Location: Go Riders Go!!!!!!!, CANADA
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

Thanks Dave..... how the heck did you get that muffler on with the cowl in place???

Geoff
Old 01-26-2009, 01:12 PM
  #6  
Flyboy Dave
My Feedback: (21)
 
Flyboy Dave's Avatar
 
Join Date: Mar 2002
Location: Pinon Hills, CA
Posts: 13,847
Received 5 Likes on 5 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

....there is just enough room to get a long t-handle allen wrench up past the header
to get the allen bolts in. The header flange is shaped like a triangle, held on with 3
bolts, that's why the cowl cut-out is shaped like it is in pic #2.

When I bolt the header on, the cowl is not screwed on, so I can get enough wiggle
room to help bolt on the header. Then the cowl is screwed into place with several
screws. I dislike Pitts mufflers, I will not use one. I got one with a used engine onece

....I gave it away. They do not help anything, they cause too many problems. []

FBD.
Attached Thumbnails Click image for larger version

Name:	Hf97964.jpg
Views:	18
Size:	52.5 KB
ID:	1120073  
Old 01-26-2009, 02:24 PM
  #7  
Flyboy76
Thread Starter
My Feedback: (14)
 
Flyboy76's Avatar
 
Join Date: Aug 2005
Location: Go Riders Go!!!!!!!, CANADA
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

aaahhh! gotcha after looking at the engine it makes sense. I would not be able to do it that way as my engine has a standard mount where the allen bolts come from the other side into the the muffler.

Geoff[&o]
Old 01-26-2009, 02:25 PM
  #8  
Flyboy76
Thread Starter
My Feedback: (14)
 
Flyboy76's Avatar
 
Join Date: Aug 2005
Location: Go Riders Go!!!!!!!, CANADA
Posts: 642
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

By the way, how does that setup fly on yours??

geoff
Old 01-29-2009, 09:04 PM
  #9  
Flyboy Dave
My Feedback: (21)
 
Flyboy Dave's Avatar
 
Join Date: Mar 2002
Location: Pinon Hills, CA
Posts: 13,847
Received 5 Likes on 5 Posts
Default RE: Seagull Harmon Rocket / TT .61 Pro

....I have not as yet completed that plane.

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 -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.