RE: ASP/MAGNUM FS400AR Rebuild/Overhaul  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Page: <<   < prev  1 [2] 3   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 3:30:35 AM   
Kimhoff



Posts: 377
Joined: 9/19/2003
From: Jefferson, MO, USA
Status: offline 		What do you mean by blueprinting?

_____________________________

Saito Club Member 162

(in reply to Kmot)
       Post #: 26

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 4:35:14 AM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		"Blueprinting" an engine is a term that refers to rebuilding the engine to the tightest clearances and tolerances called out for in the spec's of the engine.

_____________________________

Ahhh......screw it!

(in reply to Kimhoff)
       Post #: 27

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 7:42:07 PM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		I took another look at the engine and found the timing marks. I am golden!

Cam and reduction gears timed:







Timing punch marks:













And the controversial 'crack':





_____________________________

Ahhh......screw it!

(in reply to Kmot)
       Post #: 28

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 7:48:54 PM   
Flyboy Dave



Posts: 13175
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: offline 		....are you going to balance the pistons and rods ?

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to Kmot)
       Post #: 29

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 8:33:11 PM   
SJN



Posts: 4226
Joined: 9/28/2002
From: Copenhagen, DENMARK
Status: offline 		Great pics.

I think ill take mine apart again and do a detailed inspection the the pins.

I just bought an onlboard glow module for mine.
8 terminals, max 15 amps Its just operated by a on/off switch, or mixed into the radio on teh throttle chanel if i want...

Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

Sonnich Johannesen

(in reply to Flyboy Dave)
       Post #: 30

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 11:30:58 PM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline
quote:

ORIGINAL: Flyboy Dave

....are you going to balance the pistons and rods ?

I'm going to check the weights, yes. Don't know if I will do anything about it though, because trying to balance the counterweight afterwards might be tough without a slug. And I'm not really into making a jig and everything in order to do the job.

Unless you have one I can borrow.

_____________________________

Ahhh......screw it!

(in reply to Flyboy Dave)
       Post #: 31

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/21/2007 11:47:23 PM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		The engine is now almost completely disassembled. Some things of note:

The master rod needle bearing is made in Germany:



The main rear bearing is an NSK made in Japan:



The front main bearing is no name, but is a rubber sealed 6000RS:



The master rod capture bolt is left hand thread:



Some miscellaneous photos for anyone keeping a reference file:













This is a stand I made to keep the cylinders, pistons and rods, and linkpins organized:





The cylinders have a permanent liner, that is pinned. The steel liner then slides into it, and is keyed on the pin:





To be contined...

_____________________________

Ahhh......screw it!

(in reply to Kmot)
       Post #: 32

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/22/2007 10:41:22 PM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		The cam drum is an assembly of several parts. They are timed and fortunately they have punch marks as well so the assembly can be taken apart and put back together again without worry. The cams are also ID'd as to whether intake or exhaust.











The intake cam lobes show signs of wear already, which I find bothersome.





The crankshaft has a small pit in it which I shall stone clean, as well as a couple of scratches from the prop driver that was probably assembled with some tiny pieces of grit inside it.



Lastly, the crank pin is not what you would call 'micro-polished'.





_____________________________

Ahhh......screw it!

(in reply to Kmot)
       Post #: 33

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/23/2007 12:36:25 AM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		The crank has been serviced. I stoned the pit out and then polished all the journals using a variety of abrasive cloth and sandpaper.





Looking a lot better!





_____________________________

Ahhh......screw it!

(in reply to Kmot)
       Post #: 34

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/23/2007 1:19:36 AM   
Flyboy Dave



Posts: 13175
Joined: 3/20/2002
From: San Bernardino County, CA, USA
Status: offline 		I see the gobs of used crocus cloth....good man.

Did you order the link pins ?

_____________________________

An engineer says.... "That won''t work".
A mechanic says..."Oh yeah, watch this".
"Old Age, and Treachery will overcome youth and skill".
Revver Bro #4.

(in reply to Kmot)
       Post #: 35

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/23/2007 4:41:19 AM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		I have sent my wish list to Just Engines in the UK to check on availability and pricing.

Crocus cloth. When I was employed, that stuff used to follow me home.

Now that tiny 1" x 3" piece is all I have left. I slice it into thin strips and use it sparingly. I need to find a cheap source for some more of it.

_____________________________

Ahhh......screw it!

(in reply to Flyboy Dave)
       Post #: 36

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/23/2007 7:57:27 AM   
Motorboy



Posts: 1617
Joined: 2/7/2004
From: Bergen, NORWAY
Status: online
quote:

ORIGINAL: Kmot

I have sent my wish list to Just Engines in the UK to check on availability and pricing.



Hope Santa Claus will come to you with spareparts as gift.


_____________________________

Jens Eirik
All landings are just controlled crashes!

(in reply to Kmot)
       Post #: 37

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/24/2007 12:38:14 AM   
pe reivers



Posts: 2248
Joined: 1/23/2002
From: Arcen, , NETHERLANDS
Status: offline 		Great thread!
I have one of the prototypes, but did not have any documentation. The manual in the link was half Dutch (my native tongue) half German. Thanks guys.
My engine came apart easily. The bearings in mine are all no-names and only seemed fit for demo-running, so I have not run it extensively yet. If I have to get it in running order, Kmot's pictures will be a great help. One of those future projects I suppose.

Best Seasons greetings to y'all,

_____________________________

Pe, MVVS, MTW, Mejzlik. www.mvvs.nl
There is sanctuary in analisys.

(in reply to Motorboy)
       Post #: 38

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/24/2007 2:48:41 AM   
Kmot



Posts: 7246
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline
quote:

ORIGINAL: pe reivers

Great thread!

If I have to get it in running order, Kmot's pictures will be a great help.



Thank you, Pe! This is the reason I am doing the thread, so that others with this engine will be able to save the photos for their own documentation as well as see how it is made and what to do to overhaul it.



_____________________________

Ahhh......screw it!

(in reply to pe reivers)
       Post #: 39

RE: ASP/MAGNUM FS400AR Rebuild/Overhaul - 12/28/2007 5:11:23 PM