Notices
Glow Engines Discuss RC glow engines

Welcome to Club SAITO !

Old 08-15-2006, 02:10 AM
  #4201  
Junior Member
 
Join Date: Jun 2006
Location: San Francisco, CA
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

Hi Bill Robison,

Remember back in 7/14 I wrote asking about clicking noises from my .30 when rotated by hand? You were the only one responded.

The clicking came from momentary cam reversals just past lobe peaks, abruptly stopping after taking up excessive backlash in the cam drive gears. It probably is of no consequence when engine is at running speeds. Momentum of the cam shaft should prevent reversals then. The clicking just bothered me. I had to fix it.

Now the problem had been fixed to my satisfaction. I have to put my ear right up to the engine to even hear the very subdued clicks. It took two tries to tighten up the gear mesh sufficiently. A total of .006 inch was removed from the cam box by lapping. I also replaced the rear bearing that was a little rough.

It now feels like a precision piece of machinery, smooth and without the "clackety-clack".

Philip
Old 08-15-2006, 05:02 AM
  #4202  
My Feedback: (102)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes on 25 Posts
Default RE: Welcome to Club SAITO !

The clackity clack is not a problem since at running speeds it would not be doing it.
Old 08-15-2006, 11:51 AM
  #4203  
My Feedback: (24)
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,958
Likes: 0
Received 5 Likes on 5 Posts
Default RE: Welcome to Club SAITO !


ORIGINAL: [email protected]


It now feels like a precision piece of machinery, smooth and without the "clackety-clack".

Philip
Phillip: Nice work. Nothing more satisfying than fixing a problem that 'bugs' you. [sm=thumbup.gif]
Old 08-15-2006, 12:14 PM
  #4204  
Senior Member
 
Join Date: Jun 2006
Location: winnipeg, MB, CANADA
Posts: 950
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

Hob

One other thing I noticed on my test stand; my throttle adjustment wire was pushing the thottle barrel inward, overcoming the internal spring. This was causing the HS to go lean. I wonder if this is causing those lean runs we keep reading about. Just one more thing to be aware of. I now wonder if my plane installation was doing the same thing?
Old 08-15-2006, 12:35 PM
  #4205  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

I've often thought of the poor linkage arangments that push in on the barrel.

Some engines have so little sloop that it makes no difference but others have a lot of slack.
Old 08-15-2006, 03:46 PM
  #4206  
My Feedback: (102)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes on 25 Posts
Default RE: Welcome to Club SAITO !

Here are my two not so indentical twin Saito .30s, the new one came with a prop nut and an eccentric jam nut ala YS. The old one came with the prop nut you see in the picture. The old one also has WRs extra cooling capacity coating on the outside of the cylinder and his, "good for 5 HP" coating on the inside called "Robislick".[8D]

Attached Thumbnails Click image for larger version

Name:	Rp42767.jpg
Views:	48
Size:	72.5 KB
ID:	507830  
Old 08-15-2006, 08:02 PM
  #4207  
blw
My Feedback: (3)
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Welcome to Club SAITO !

The velocity stack for the 72/82 fits the 1.25. The same o ring fits too.
Old 08-15-2006, 08:29 PM
  #4208  
Senior Member
My Feedback: (32)
 
Join Date: Aug 2004
Location: Staten Island, NY
Posts: 432
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

I just purchased a velocity stack for my 125, somebody please tell me how to install it.
Old 08-15-2006, 09:20 PM
  #4209  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

Unbolt the carb... slide the velocity stack over the carb aligning the holes... and re-install.

Most people put a O-ring in between the velocity stack and the carb.
Old 08-15-2006, 09:24 PM
  #4210  
Senior Member
My Feedback: (32)
 
Join Date: Aug 2004
Location: Staten Island, NY
Posts: 432
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

Thank you, sounds easy enough
Old 08-15-2006, 09:24 PM
  #4211  
RVM
Senior Member
 
Join Date: Mar 2006
Location: Sacramento, CA
Posts: 1,977
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

I saw this somewhere before but I can't seem to find it again. What is the ID and OD of the o-ring?


ORIGINAL: w8ye

Unbolt the carb... slide the velocity stack over the carb aligning the holes... and re-install.

Most people put a O-ring in between the velocity stack and the carb.
Old 08-15-2006, 09:54 PM
  #4212  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

I went to the hardware store and bought some the same size as was around the intake manifold where it goes in the carb
Old 08-16-2006, 10:27 AM
  #4213  
My Feedback: (6)
 
JettPilot's Avatar
 
Join Date: Apr 2005
Location: Islamorada, FL
Posts: 1,161
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !


ORIGINAL: Hobbsy

Here are my two not so indentical twin Saito .30s, the new one came with a prop nut and an eccentric jam nut ala YS. The old one came with the prop nut you see in the picture. The old one also has WRs extra cooling capacity coating on the outside of the cylinder and his, "good for 5 HP" coating on the inside called "Robislick".[8D]

Correction, that spinner nut came with a ModelTech Cub on which I had the old .30 mounted inverted.
What are those coatings you are talking about ???? The one looks like a GK cylender on a normal crankcase. How did that happen ? What is the inside coating ?

JettPilot
Old 08-16-2006, 10:33 AM
  #4214  
My Feedback: (24)
 
Kmot's Avatar
 
Join Date: Jun 2003
Location: Northridge, CA
Posts: 10,958
Likes: 0
Received 5 Likes on 5 Posts
Default RE: Welcome to Club SAITO !

lol... that was tongue in cheek Jett. The coating is black paint. The Robislick is probably just WR's boogers.
Old 08-16-2006, 10:47 AM
  #4215  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

I have 3 silver Saito 30's. One I bought used and it had the Saito spinner nut on it like in Hobbsy's picture.

The other two I recently bought new at Hodges Hobbies in Andersonville, GA and they have just a plain hex nut on them. The engines were fress from Horizon.

Never had any trouble with either
Old 08-16-2006, 05:49 PM
  #4216  
My Feedback: (102)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes on 25 Posts
Default RE: Welcome to Club SAITO !

JP, I loaned Bill R. my Saito .30 a few months ago to get himslef prepared for a Saito maintainance Seminar. While he had it he colored the cylinder black, the inside coating thing was just a little fun thrown his way. He ain't got no sense of humor so I'll have to call him and splain it to him.
Old 08-16-2006, 06:02 PM
  #4217  
My Feedback: (102)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes on 25 Posts
Default RE: Welcome to Club SAITO !

MM, the .40a arrived today, great packing job, best in fact. When I saw where the vent fitting is I remembered that the 2.20 has a boss cast into the same spot but no vent. Thanks MM
Attached Thumbnails Click image for larger version

Name:	Ca81020.jpg
Views:	45
Size:	41.8 KB
ID:	508311   Click image for larger version

Name:	Vt57254.jpg
Views:	40
Size:	36.4 KB
ID:	508312   Click image for larger version

Name:	Ki18244.jpg
Views:	40
Size:	70.8 KB
ID:	508313  
Old 08-16-2006, 06:56 PM
  #4218  
My Feedback: (22)
 
Join Date: Sep 2003
Location: Jefferson, MO
Posts: 655
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

Is Saito moving the vent on all of their engines? I would think that this would be a good upgrade for an older engine?
Old 08-16-2006, 07:15 PM
  #4219  
Senior Member
 
Join Date: Mar 2002
Location: Banning, CA
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

New topic, Props.
What is a good range of props for a Saito 65, vintage 1980, but with very low time, maybe 2 hours.
Plus what RPM should I be trying for?
Old 08-16-2006, 07:25 PM
  #4220  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

13 X 6 for the Saito 65. If you don't have room for a 13-6 you could use a 12-7.
[hr]
VENTS

Saito has been inconsistant with their vents. The 50 - 56 size engine were moved to the front.

The 100 came out after the 72 but has a rear vent

etc
Old 08-16-2006, 08:10 PM
  #4221  
blw
My Feedback: (3)
 
blw's Avatar
 
Join Date: Mar 2004
Location: Opelika, AL
Posts: 9,447
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Welcome to Club SAITO !

The 1.25 is a rear vent. Also has the black tag with gold '125' on it.
Old 08-17-2006, 03:15 AM
  #4222  
 
bldrums's Avatar
 
Join Date: Sep 2002
Location: C-Ville, VA
Posts: 512
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

I installed stacks on my .91 and .82 , both engines exhibited less power and obvious lower max rpms even after tweeking them a bit on the test stand. I wonder if the o ring ( from a saito kit ) was causing the problem even though it looked to me like a good fit? Otherwise, I dont know why the difference in performance. After removing the stacks the engines ran a little smoother like originally.

Bill #108
Old 08-17-2006, 06:53 AM
  #4223  
My Feedback: (102)
 
Hobbsy's Avatar
 
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes on 25 Posts
Default RE: Welcome to Club SAITO !

The placing of this vent on the cam housing raises my couriosity. I'm used to seeing about a teaspoon full of oil in the crankcase of the smaller Saitos and about a tablespoon full in the larger ones. I'm going to run the .40a today for about an hour and then pull the backplate to see the oil content. I'll use a Graupner 10.5x6. If I have an 11x5 I'll use it.
Attached Thumbnails Click image for larger version

Name:	Yw67704.jpg
Views:	42
Size:	35.9 KB
ID:	508609  
Old 08-17-2006, 08:06 AM
  #4224  
Senior Member
 
IronCross's Avatar
 
Join Date: Aug 2002
Location: NearBy, AZ
Posts: 2,409
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Welcome to Club SAITO !

Does anyone know what happened to Mr Bill ?... Haven't seen a post by him for some time ??????
Old 08-17-2006, 09:12 AM
  #4225  
My Feedback: (16)
 
w8ye's Avatar
 
Join Date: Dec 2001
Location: Shelby, OH
Posts: 37,576
Received 9 Likes on 9 Posts
Default RE: Welcome to Club SAITO !

I talked to him on the phone Monday. He seemed OK then.

He's sometimes gone from RCU for a few days. He may be on a trip or working on a project?

Thread Tools
Search this Thread

Contact Us - Manage Preferences 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.