RE: Welcome to Club SAITO !    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: SprinklerTech, The Raven
    Search This Thread  
 
Printable Version

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> RE: Welcome to Club SAITO !
Page: <<   < prev  864 865 [866] 867 868 869 870 871 872 873   next >   >>  

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RE: Welcome to Club SAITO ! - 4/17/2012 10:34 PM   
earlwb


 

Posts: 4548
Score: 584
Joined: 8/6/2009
Last Login: 5/22/2013
From: Grapevine, TX, USA
Status: offline 		To remove the crankshafts, I use a short scrap piece of 4x4 hardwood as a anvil. I heat up the crankcase using a Hakko heat shrink tubing gun, and with a, big brass hammer, I tap the crank on out of the engine. Sometimes the bearings pop out sometimes not. I tnen use a 1/4 brass rod with a lip on one end to tap the bearings out (after reheating the crankcase up good again). I need to wear leather gloves for the hot engine too. Putting a nut on the tip of the crankshaft to help protect the threads is a good idea.




_____________________________

Club Saito #722, Sig Kadet Brotherhood #80
AMA # 928076

Hide Signatures

(in reply to Old Fart)
       Post #: 21626

RE: Welcome to Club SAITO ! - 4/17/2012 11:07 PM   
FNQFLYER


 

Posts: 502
Score: 110
Joined: 4/24/2010
Last Login: 5/22/2013
From: Cairns, AUSTRALIA
Status: offline 		Old Fart, yes I have the big hammer and itstill does good service.  As an aside I purchased a JR 9X 11 2 years ago with a 2.4 gig conversion (spectrum) used it at the comp and I won't go back to the others I have been using (A Spectrum DSX7 and a JR 2720) not that they are bad just that the 9x is good with the best of both worlds 36mhz and 2.4 gig.
The Saitos worked well at the comp and by far were the most popular and now if the "idiots" stop leaning them out to excess we might see some real performance and maybe not so many broken ones
IC forever

_____________________________

Club Saito member 710

Hide Signatures

(in reply to earlwb)
       Post #: 21627

RE: Welcome to Club SAITO ! - 4/17/2012 11:10 PM   
earlwb


 

Posts: 4548
Score: 584
Joined: 8/6/2009
Last Login: 5/22/2013
From: Grapevine, TX, USA
Status: offline
quote:

ORIGINAL: Old Fart

You still got that big hammer?



I have a pre-WWII BFBH one myself. Great for when the engine irks me a little. I normally use it to change the wheel bearings out in my Harley though.





_____________________________

Club Saito #722, Sig Kadet Brotherhood #80
AMA # 928076

Hide Signatures

(in reply to Old Fart)
       Post #: 21628

RE: Welcome to Club SAITO ! - 4/19/2012 1:48 PM   
Old Fart


 

Posts: 2064
Score: 158
Joined: 4/27/2008
Last Login: 5/22/2013
From: Perth, AUSTRALIA
Status: offline 		Well i guess it was me that just got hammered.As an aside and with the exchange rate still good i bought a jr9503,stiffer sticks than the old dsx7 and took some getting used to but i did'nt mind that.No expo on the throttle curve for my saito engines when flying so it helps when you want to throttle them up gently while flying.

Do americans indulge in putting big props on small fourstrokes or do they just hold world series competitions for sports that are only conducted over there?

_____________________________

Watch out for the ground eh?

Hide Signatures

(in reply to earlwb)
       Post #: 21629

RE: Welcome to Club SAITO ! - 4/19/2012 2:08 PM   
Hobbsy



Posts: 14571
Score: 650
Joined: 12/2/2001
Last Login: 5/22/2013
From: Colonial Beach, VA, USA
Status: offline 		Is this what you call large, a Bolly 10.5x5 on a Saito .30? It turns at 10,200 on 15% WildCat Premium Extra.


Attachments
Click to see fullsize image.
Click for fullsize


_____________________________

A young man knows the rules and an old man knows the exceptions.

Club Saito member #5

Hide Signatures

(in reply to Old Fart)
       Post #: 21630

RE: Welcome to Club SAITO ! - 4/20/2012 2:20 AM   
Ernie Misner



Posts: 4665
Score: 130
Joined: 7/5/2002
Last Login: 5/22/2013
From: Tacoma, WA, USA
Status: offline 		That's a pretty setup Hobbsy! What type of fuel filter is that with a bowl?

Thanks,

Ernie

Hide Signatures

(in reply to Hobbsy)
       Post #: 21631

RE: Welcome to Club SAITO ! - 4/20/2012 3:04 AM   
johnS555


 

Posts: 32
Score: 100
Joined: 9/1/2002
Last Login: 3/23/2013
From: Las Vegas , NV, USA
Status: offline 		How is the balance with only half of a prop on there ????? .......

or is that an obstical seclusion ???? ( good settup)......

Hide Signatures

(in reply to Hobbsy)
       Post #: 21632

RE: Welcome to Club SAITO ! - 4/20/2012 3:30 AM   
earlwb


 

Posts: 4548
Score: 584
Joined: 8/6/2009
Last Login: 5/22/2013
From: Grapevine, TX, USA
Status: offline
quote:

ORIGINAL: Old Fart

Well i guess it was me that just got hammered.As an aside and with the exchange rate still good i bought a jr9503,stiffer sticks than the old dsx7 and took some getting used to but i did'nt mind that.No expo on the throttle curve for my saito engines when flying so it helps when you want to throttle them up gently while flying.

Do americans indulge in putting big props on small fourstrokes or do they just hold world series competitions for sports that are only conducted over there?



I thought they had some sort of throttle curve you could dial in on the JR TX, not Exponential.

I am inclined to try big props on some two stroke engines too.
Here is my P86 Twin Mustang with two Saito FA-40a engines on it for power. Yes it has lots of power too. it only needs about ten feet of runway to take off of the grass with.



How about a K&B Twister .60 with a 14x6 Master Airscrew prop on it?





_____________________________

Club Saito #722, Sig Kadet Brotherhood #80
AMA # 928076

Hide Signatures

(in reply to Old Fart)
       Post #: 21633

RE: Welcome to Club SAITO ! - 4/20/2012 3:45 AM   
ckreef


 

Posts: 224
Score: 105
Joined: 1/21/2012
Last Login: 5/17/2013
From: Danville, GA, USA
Status: offline 		To make a long story short I think I hydro locked my .91 4s and something broke internally. The glow plug area is ok and after removing the rocker covers the valves are moving like they should but I have no compression what so ever and I'm not sure the piston is moving at all.

Any ideas ?? Is there a disassembly "web link" some one can provide so I don't muck it up when I take it apart to figure out whats broke.

Please help as it was running great 10 mins before this and I am completely bummed


Hide Signatures

(in reply to earlwb)
       Post #: 21634

RE: Welcome to Club SAITO ! - 4/20/2012 5:06 AM   
Ernie Misner



Posts: 4665
Score: 130
Joined: 7/5/2002
Last Login: 5/22/2013
From: Tacoma, WA, USA
Status: offline 		Was the engine inverted and got flooded? That will sometimes snap the crank pin right off. Hopefully some one will have a good link to tearing it down or you can send it to Horizon or other repair services. If you think it might be flooded always see if you can turn it over by hand before hitting it with the starter.

Good luck and keep us posted,

Ernie Misner

Hide Signatures

(in reply to ckreef)
       Post #: 21635

RE: Welcome to Club SAITO ! - 4/20/2012 6:14 AM   
ckreef


 

Posts: 224
Score: 105
Joined: 1/21/2012
Last Login: 5/17/2013
From: Danville, GA, USA
Status: offline
quote:

ORIGINAL: Ernie Misner

Was the engine inverted and got flooded? That will sometimes snap the crank pin right off. Hopefully some one will have a good link to tearing it down or you can send it to Horizon or other repair services. If you think it might be flooded always see if you can turn it over by hand before hitting it with the starter.

Good luck and keep us posted,

Ernie Misner


Yes it's an inverted setup and yes it probably got flooded (my mistake). Unfortunatly I didn't realize the flooded situation before I put the electric starter on it 

Hopefully some one can supply a good link as I would much rather tear it down myself then to send it off. Would just like a little guidance before I proceed.



Hide Signatures

(in reply to Ernie Misner)
       Post #: 21636

RE: Welcome to Club SAITO ! - 4/20/2012 11:07 AM   
SrTelemaster150



Posts: 1428
Score: 229
Joined: 2/7/2012
Last Login: 5/22/2013
From: Brasher Falls, NY, USA
Status: online
quote:

ORIGINAL: ckreef

To make a long story short I think I hydro locked my .91 4s and something broke internally. The glow plug area is ok and after removing the rocker covers the valves are moving like they should but I have no compression what so ever and I'm not sure the piston is moving at all.

Any ideas ?? Is there a disassembly ''web link'' some one can provide so I don't muck it up when I take it apart to figure out whats broke.

Please help as it was running great 10 mins before this and I am completely bummed




Just remove the intake manifold/carb & that will allow you to remove the backplate. You will be able to see the crank/conrod after that.

_____________________________

Club Saito #785 - FA91S CDI, FA150 CDI, FA180 CDI, FA180HC CDI/BBC, FA200TI, FA300TTDP CDI

Hide Signatures

(in reply to ckreef)
       Post #: 21637

RE: Welcome to Club SAITO ! - 4/20/2012 12:45 PM   
earlwb


 

Posts: 4548
Score: 584
Joined: 8/6/2009
Last Login: 5/22/2013
From: Grapevine, TX, USA
Status: offline
quote:

ORIGINAL: ckreef
To make a long story short I think I hydro locked my .91 4s and something broke internally. The glow plug area is ok and after removing the rocker covers the valves are moving like they should but I have no compression what so ever and I'm not sure the piston is moving at all.

Any ideas ?? Is there a disassembly "web link" some one can provide so I don't muck it up when I take it apart to figure out whats broke.
Please help as it was running great 10 mins before this and I am completely bummed


You can easily remove the carb and intake manifold from the back of the engine. That then lets you remove the backplate so you can see inside the crankcase. You can then easily tell if you broke the rod or the piston or the crankshaft or something.




_____________________________

Club Saito #722, Sig Kadet Brotherhood #80
AMA # 928076

Hide Signatures

(in reply to ckreef)
       Post #: 21638

RE: Welcome to Club SAITO ! - 4/20/2012 6:31 PM  1 votes
Ernie Misner



Posts: 4665
Score: 130
Joined: 7/5/2002
Last Login: 5/22/2013
From: Tacoma, WA, USA
Status: offline 		Run a search, this thread and forum, lots of info in the William Robison Complete Notes as well. It is at the top of the Engine Forum. Tearing it down will be fairly straight forwardward but on re-ass'y you will need to time the cam shaft. You will use heat from a propane torch, heat gun, or oven when removing the prop hub, crank and/or bearings. A puller can be used on the prop hub before removing the crank otherwise it can come off after heating and tapping on the front of the crank. When tapping put the nut on the crank threads and use a piece of hard wood and hammer. If the bearings don't come out with the crank you can leave them in unless you want to replace them. If they stay in place but you do want to replace them you'll have to re-heat the case and then with a gloved hand slam the case rear down on a piece of wood or tap them out from the front. On reass'y you can check the cam timing - both valves will be slightly open when at TDC on the intake stroke. Let us know..... try Paul at RC Bearings if needed.

Ernie Misner

Hide Signatures

(in reply to earlwb)
       Post #: 21639

RE: Welcome to Club SAITO ! - 4/21/2012 3:39 PM   
clytle374


 

Posts: 156
Score: 100
Joined: 7/6/2003
Last Login: 5/11/2013
From: Near Princeton, WV, USA
Status: offline 		Here is a picture of the engine I got recently. The seller is stating that this scraping is from tighten the prop nut down which pulled against the bearings and being pulled by the prop. Also that the crank can heat up and expand causing the scraping. Am I crazy? Or is this not normal?

Cory

Also that seems to be fuel staining on the crank and bearings, but why not on the rod and crank like I've always seen?

Attachments
Click to see fullsize image.
Click for fullsize


Hide Signatures

(in reply to Ernie Misner)
       Post #: 21640

RE: Welcome to Club SAITO ! - 4/21/2012 10:02 PM   
radial1951


 

Posts: 184
Score: 105
Joined: 8/3/2009
Last Login: 5/19/2013
From: NSW, AUSTRALIA
Status: offline 		*
Cory, That's a long way from "normal".  What a load of rubbish the seller is feeding you! The crank expanding...

I would think the only way the side of the rod can touch the case is if the rear bearing is completely shot, allowing the crank to move forward. There must also be enough clearance in the piston to allow the rod to float forward with the crank...

The "fuel staining" is RUST. The alloy rod and case won't rust. You may have seen castor oil stains previously.

Regards, RossG
radial1951
_____________

quote:

ORIGINAL: clytle374

Here is a picture of the engine I got recently. The seller is stating that this scraping is from tighten the prop nut down which pulled against the bearings and being pulled by the prop. Also that the crank can heat up and expand causing the scraping. Am I crazy? Or is this not normal?

Cory

Also that seems to be fuel staining on the crank and bearings, but why not on the rod and crank like I've always seen?



Hide Signatures

(in reply to clytle374)
       Post #: 21641

RE: Welcome to Club SAITO ! - 4/22/2012 12:43 AM   
Old Fart


 

Posts: 2064
Score: 158
Joined: 4/27/2008
Last Login: 5/22/2013
From: Perth, AUSTRALIA
Status: offline 		Hi Dave is that a saito fuel filter?
No,thats not what i call large re props.From memory i was running a 10x6 mas on the 30 and it would rip it at full throttle.I usually prop my saitos so that they won't exceed high nines in flight.

My bad earl you were right about the throttle curve but i don't use it yet.The throttle stick has ratchet clicks so i've settled for that.
How far over the recommended max prop size have people tried?.Is it dangerous to overload the engine at lower revs?

_____________________________

Watch out for the ground eh?

Hide Signatures

(in reply to Hobbsy)
       Post #: 21642

RE: Welcome to Club SAITO ! - 4/22/2012 1:50 AM   
Hobbsy



Posts: 14571
Score: 650
Joined: 12/2/2001
Last Login: 5/22/2013
From: Colonial Beach, VA, USA
Status: offline 		It appears that a foriegn object/substance got under the rod, I see plenty of clearance the way it is sitting in the picture.

_____________________________

A young man knows the rules and an old man knows the exceptions.

Club Saito member #5

Hide Signatures

(in reply to clytle374)
       Post #: 21643

RE: Welcome to Club SAITO ! - 4/22/2012 2:06 AM   
clytle374


 

Posts: 156
Score: 100
Joined: 7/6/2003
Last Login: 5/11/2013
From: Near Princeton, WV, USA
Status: offline
quote:

ORIGINAL: Hobbsy

It appears that a foriegn object/substance got under the rod, I see plenty of clearance the way it is sitting in the picture.


There is less than .004"(bites 2 sheets of paper) when you press the rod down with your finger at BDC. It is possible that something something was in there, idk. The seller is now stating that this is normal wear and the 9/10 engines ran for over a year would have this scraping. I've heard all I can take out of him, he is supposed to refund my money.... I'm holding my breath. Anyway I bought a brand new 100 last weekend.

Cory


Hide Signatures

(in reply to Hobbsy)
       Post #: 21644

RE: Welcome to Club SAITO ! - 4/22/2012 2:44 AM   
ckreef


 

Posts: 224
Score: 105
Joined: 1/21/2012
Last Login: 5/17/2013
From: Danville, GA, USA
Status: offline 		I am now totally confused (see above posts)

Saito .91 had no compression (most likely due to inverted and totally flooded). I took the engine off the plane. The carb and intake tube off. Removed the back plate. The crank case was soaked in fuel with a large puddle in there. There was nothing broke that I could see. I cleaned out all the excess fuel and  I tried turning it over (by finger method) . It now appears to have full compression (could barely turn it over w/ finger method) and piston is moving as expeceted with valves moving as expeceted.

Any thoughts on this before I put it back together and try to run it ???

And NO I am not crazy although from my posts above even "Me-Myself-& Irene" think I'm crazy.


Hide Signatures

(in reply to clytle374)
       Post #: 21645

RE: Welcome to Club SAITO ! - 4/22/2012 2:57 AM   
blw



Posts: 7633
Score: 655
Joined: 3/15/2004
Last Login: 5/21/2013
From: Opelika, AL, USA
Status: offline 		Cory, did you buy the engine locally so you could get your money back?

You probably checked compression with the throttle closed the first time.

Edit for grammer

< Message edited by blw -- 4/22/2012 4:19 AM >

_____________________________

The ultimate responsibility of pilots is to fulfill the dreams of the countless millions who can only stare skyward...and wish.

"It doesn''t take but one Auburn man to be a majority" -
Coach Pat Dye

Hide Signatures

(in reply to ckreef)
       Post #: 21646

RE: Welcome to Club SAITO ! - 4/22/2012 3:42 AM   
rexracer


 

Posts: 267
Score: 100
Joined: 1/23/2006
Last Login: 11/5/2012
From: New Milford, CT, USA
Status: offline 		I posted a bunch of props I tested on my .40a one page back. I don't know what you concider large, but I'll probably fly the Beaver I'm building for this engine with a MA-S2 12x6 prop. It turns over 9k static. I bet it would turn a 13x4 MA-S2 at about the same. The 12x6 actually spools up very quickly.

_____________________________

Club Saito member #173

Hide Signatures

(in reply to Old Fart)
       Post #: 21647

RE: Welcome to Club SAITO ! - 4/22/2012 4:26 AM   
ckreef


 

Posts: 224
Score: 105
Joined: 1/21/2012
Last Login: 5/17/2013
From: Danville, GA, USA
Status: offline
quote:

ORIGINAL: blw

You probably checked compression with the throttle closed the first time.



I assume you are posting to me. I don't really recall the trottle position but yes probably closed the 1st time.

Could you please explain so I have a better understanding. My brain must be missing something.





Hide Signatures

(in reply to blw)
       Post #: 21648

RE: Welcome to Club SAITO ! - 4/22/2012 4:30 AM   
clytle374


 

Posts: 156
Score: 100
Joined: 7/6/2003
Last Login: 5/11/2013
From: Near Princeton, WV, USA
Status: offline
quote:

ORIGINAL: blw

Cory, did you buy the engine locally so you could get your money back?
Edit for grammer


The used engine was long distance via paypal. The new one was local.
Cory

Hide Signatures

(in reply to blw)
       Post #: 21649

RE: Welcome to Club SAITO ! - 4/22/2012 4:44 AM   
orthobird


 

Posts: 584
Score: 105
Joined: 12/2/2011
Last Login: 5/21/2013
From: shreveport, LA, USA
Status: offline 		hello
i have a Saito FG 36 
love it
what a beautiful engine.

today i was flying my super decathlon, with an APC 18 x 8 prop
tach read 8000 rpm

does anyone have any experience with another prop i could use to get more speed on this baby?


_____________________________

avoid crashing!!

Hide Signatures

(in reply to clytle374)
       Post #: 21650

Page:   <<   < prev  864 865 [866] 867 868 869 870 871 872 873   next >   >>  
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Glow Engines >> RE: Welcome to Club SAITO !
Page: <<   < prev  864 865 [866] 867 868 869 870 871 872 873   next >   >>  




Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.281RCU1