"1/2 A" & "1/8 A" airplanes These are the small ones...more popular now than ever.

Need help with Sure start engine mount.

Reply
Old 04-19-2009, 05:36 PM
  #1
LONGREDDOG
Thread Starter
 
Join Date: Dec 2006
Location: Converse, TX
Posts: 8
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Need help with Sure start engine mount.

I purchased the plastic engine mount for a sure start .049, from "Bay". It came with six screws , two of them are about 7/8" long , two are about 5/8" in. and two are about 3/8". I can't figure out which ones go where. The two middle size ones look like the are the right length for the engine backplate and mount, the other ones are either too short or too long.
The screws that look like they are correct are black, the other ones are chrome.
Thanks in advance for any help . I 'm trying to get back into some 1/2 A controlline stuff after about thirty years!
This fourm is great, i've been able to catch up on a lot of things that I had fogotten by reading the past postings.
Thanks again! Ed.
LONGREDDOG is offline  
Reply With Quote
Old 04-19-2009, 07:54 PM
  #2
build light
 
build light's Avatar
 
Join Date: Nov 2005
Location: Crete, NE
Posts: 2,246
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Ed, thanks for posting!

I sure don't know all the answers but here is how I think it should go. The shortest screws go in the mount by itself as shown in this picture I have doctored for you.
The longest screws go at the far end as shown.
The black screws I would put in the middle.

Not sure why three different lengths are supplied or why they have two different platings.

If anyone else can help, I am sure they will post.

Robert
Attached Thumbnails
Click image for larger version

Name:	Cz79919.jpg
Views:	13
Size:	26.9 KB
ID:	1183592  
build light is offline  
Reply With Quote
Old 04-19-2009, 08:08 PM
  #3
LONGREDDOG
Thread Starter
 
Join Date: Dec 2006
Location: Converse, TX
Posts: 8
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Thanks for your picture, I'll try it out tomorow. I also don't understand why the extra two screws were in the package.
Once again thanks for the info. Ed.
LONGREDDOG is offline  
Reply With Quote
Old 04-19-2009, 08:42 PM
  #4
build light
 
build light's Avatar
 
Join Date: Nov 2005
Location: Crete, NE
Posts: 2,246
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Actually they would be for the middle two holes in the mount. If you were to follow what I said and only used the four shiny screws in the locations marked you would wind up with only two screws holding the engine to the mount. You really need four.
That is why there are six screws.

Hope to see what you are bulding soon.

Robert
build light is offline  
Reply With Quote
Old 04-19-2009, 10:08 PM
  #5
SGC
 
Join Date: Dec 2004
Location: OAKEYQueensland, AUSTRALIA
Posts: 1,328
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

From my veiw of the picture, the black(mid length) screws hold the mount to the firewall, the longest hold both the motor and mount to the firewall , the short hold the motor to the mount , ie 4 shiney screws on the backplate 2 dark screws on the mount.
this gives the option of reveing the whole assy from the firewall or just the motor from the mount.
Stewart
SGC is offline  
Reply With Quote
Old 04-20-2009, 02:05 PM
  #6
gcb
 
Join Date: Oct 2002
Location: Port Ewen, NY
Posts: 3,440
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

It's only a guess but I think your mount is meant to be used with a RTF where the mount fits in a groove on the plane and the sides of the fuselage are screwed to the mount with the two upper screws. That leaves the other four positions to screw the engine to the mount.

It is easy to mount the engine using wood spacers, or if necessary remove the choke tube and the engine backplate can be mounted directly to the firewall. If you do this, remember that the choke tube also supplies protection tor the needle valve.

George
gcb is online now  
Reply With Quote
Old 04-20-2009, 04:47 PM
  #7
NEW222
 
Join Date: Sep 2004
Location: OAKBANK, MB, CANADA
Posts: 349
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

As I look at this picture taken, the screws in that picture are definately not for attaching the engine block to the mount. They look like more of a coarse screw, not a machine screw. Just my observation from the picture. If they are indeed 2-56 threaded screws, please disregard what I just said.
NEW222 is offline  
Reply With Quote
Old 04-20-2009, 05:06 PM
  #8
LONGREDDOG
Thread Starter
 
Join Date: Dec 2006
Location: Converse, TX
Posts: 8
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Thanks to everyone for the ideas! All the screws have the coarse thead, and both the engine backplate and the mount are not threaded, so it seems that the screws are suposed to go through the backplate without grabing hold. The screws do grab and hold to the engine mount. Ed.
LONGREDDOG is offline  
Reply With Quote
Old 04-20-2009, 05:31 PM
  #9
Big Al-RCU
 
Big Al-RCU's Avatar
 
Join Date: Feb 2003
Location: Slidell, LA
Posts: 501
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.


Quote:
ORIGINAL: LONGREDDOG

Thanks to everyone for the ideas! All the screws have the coarse thead, and both the engine backplate and the mount are not threaded, so it seems that the screws are suposed to go through the backplate without grabing hold. The screws do grab and hold to the engine mount. Ed.
Ed, PM me your mail address and I'll send you some customized wooden spacer mounts.
Al
Big Al-RCU is offline  
Reply With Quote
Old 04-22-2009, 09:17 PM
  #10
lildiesel
 
lildiesel's Avatar
 
Join Date: Nov 2005
Location: Cincinnati, OH
Posts: 754
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Could you upload pictures or a drawing of your mount? I'd like to make one to try for myself since its time to put my delrin backplate mount engines onto something besides Brodak C/L kits or the 1x2 "test stand" I clamp into my Workmate.

Quote:
ORIGINAL: Big Al-RCU

Ed, PM me your mail address and I'll send you some customized wooden spacer mounts.
Al
lildiesel is offline  
Reply With Quote
Old 04-23-2009, 05:08 PM
  #11
Big Al-RCU
 
Big Al-RCU's Avatar
 
Join Date: Feb 2003
Location: Slidell, LA
Posts: 501
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.


Quote:
ORIGINAL: lildiesel

Could you upload pictures or a drawing of your mount? I'd like to make one to try for myself since its time to put my delrin backplate mount engines onto something besides Brodak C/L kits or the 1x2 "test stand" I clamp into my Workmate.

Quote:
ORIGINAL: Big Al-RCU

Ed, PM me your mail address and I'll send you some customized wooden spacer mounts.
Al
It’s just a wooden spacer to allow the SS to be flush mounted to the firewall. Some use spacers, others use alum tubing stand-offs, etc. To me, the spacer seems a bit more solid.

A few years ago, I made some, both for my own use and also as a learning exercise on a CNC Sherline mill. (It’s cheaper and safer to practice on wood than metal, at least for me.)

Recently, after a period of non-use, new software and some hardware mods, I needed to get back up to speed with the mill. So I dug out the spacer dwg, tweaked it and made some practice runs. I ended up with a half-dozen configurations and a bunch more parts than I will ever use. Once set-up, the mill only takes a few minutes each and does a far better job than I could do by hand.

The offer stands, as long as they last, I will gladly send a couple to anyone on the forum that asks.

Al
Attached Thumbnails
Click image for larger version

Name:	Vt57295.jpg
Views:	19
Size:	27.8 KB
ID:	1185996   Click image for larger version

Name:	Dy79642.jpg
Views:	18
Size:	19.3 KB
ID:	1185997  
Big Al-RCU is offline  
Reply With Quote
Old 04-23-2009, 07:09 PM
  #12
ptulmer
 
ptulmer's Avatar
 
Join Date: Apr 2003
Location: Brunswick, GA
Posts: 4,867
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Wow Big Al! That last one looks really great! You guys go to a lot of trouble just to keep the choke tube. Is it really that handy for flip-starting?
ptulmer is offline  
Reply With Quote
Old 04-23-2009, 07:52 PM
  #13
gcb
 
Join Date: Oct 2002
Location: Port Ewen, NY
Posts: 3,440
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.


Quote:
ORIGINAL: ptulmer

Wow Big Al! That last one looks really great! You guys go to a lot of trouble just to keep the choke tube. Is it really that handy for flip-starting?
Various versions of the Sure Start were made before the choke tube was added. You can run off an exhaust prime or two to get fuel up to the engine. The choke tube just makes it easier. Though I have not tried it, there is probably a limit of how far the prime will draw.

Note that the choke tube also supplies support for the needle valve. Previous versions had shorter needle valves.

George
Attached Thumbnails
Click image for larger version

Name:	He97348.jpg
Views:	18
Size:	34.0 KB
ID:	1186104  
gcb is online now  
Reply With Quote
Old 04-23-2009, 08:33 PM
  #14
lildiesel
 
lildiesel's Avatar
 
Join Date: Nov 2005
Location: Cincinnati, OH
Posts: 754
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

Those wooden mounts look great. I could see using the beefiest of them as the basis for a "break away" engine mount in a semi profile plane like Cox did in the PT 19 trainer. Of course, I'll be making it with a coping saw and my Dremel drill press instead a machining it.
lildiesel is offline  
Reply With Quote
Old 04-23-2009, 08:49 PM
  #15
lildiesel
 
lildiesel's Avatar
 
Join Date: Nov 2005
Location: Cincinnati, OH
Posts: 754
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.

What's your plug of choice for running that Charlie's RC Goodies head? I used to run a Fox plug, but haven't used it in ages.


Quote:
ORIGINAL: gcb

Note that the choke tube also supplies support for the needle valve. Previous versions had shorter needle valves.

George
lildiesel is offline  
Reply With Quote
Old 04-24-2009, 12:10 AM
  #16
Big Al-RCU
 
Big Al-RCU's Avatar
 
Join Date: Feb 2003
Location: Slidell, LA
Posts: 501
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.


Quote:
ORIGINAL: ptulmer

Wow Big Al! That last one looks really great! You guys go to a lot of trouble just to keep the choke tube. Is it really that handy for flip-starting?
In all honesty, I've not run a SS with the choke tube. Gee, I didn't say that I USED these spacers, I just made them! Actually, it started as a learning exercise on my CNC Sherline mill and then they turned out too pretty to just let go to waste.
al
Big Al-RCU is offline  
Reply With Quote
Old 04-24-2009, 07:24 PM
  #17
gcb
 
Join Date: Oct 2002
Location: Port Ewen, NY
Posts: 3,440
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Need help with Sure start engine mount.


Quote:
ORIGINAL: lildiesel
What's your plug of choice for running that Charlie's RC Goodies head? I used to run a Fox plug, but haven't used it in ages.
I got that engine along with some other goodies. Didn't know about the head. I thought it was home made. Have not run it yet.

George
gcb is online now  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 08:21 AM.