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Old 05-19-2018, 06:41 AM
  #36526  
Hobbsy
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I just asked them when they will be available, we'll see if I get an answer..
Old 05-19-2018, 07:08 AM
  #36527  
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I'll get one of those for sure, I just put some money aside for it.
Old 05-19-2018, 11:14 AM
  #36528  
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Morris Mini Motors in England makes one nearly identical and they are available. I think price is pretty good too. Do a search at their website for “test stand “

https://www.morrisminimotors.com/mor...tand-blue.html


Very simple to make as well

Last edited by Jesse Open; 05-19-2018 at 04:48 PM.
Old 05-20-2018, 03:45 AM
  #36529  
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Saito .62-b on Sig Four Star


Waiting on 10 oz Roto Flow
I took some time off from building to assemble this Sig Four Star, the .62-b is just broken in.
Old 05-20-2018, 04:59 AM
  #36530  
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Is that a 4 Star 40?
Old 05-20-2018, 05:45 AM
  #36531  
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I need to get around to finishing mine. Have to see if a 4.8v pack will work better with the MPI servos, they chatter with the Life. Also have to give it a once over to make sure it is ready for it's maiden. Has a Saito 91 on it.
Old 05-20-2018, 06:48 AM
  #36532  
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So yours must be a 4 Star 60?

Was it kit built or the ARF version?

Daves looks like a 40 size. Maybe he will tell us more.
Old 05-20-2018, 06:58 AM
  #36533  
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Kit built 60 with Retracts.
Old 05-20-2018, 09:13 AM
  #36534  
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A real beauty! Bet it looks slick with the gear up
Old 05-20-2018, 10:38 AM
  #36535  
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Photos

Here you go guys, photos of my drill and tap job, note how low the hole is drilled, I wanted it a bit low so the Inside Edge would help keep oil away from the Nipple when the Crank Gear is flinging oil upward, the Case is thick enough so the Nipple is flush on the inside of the Case,
the Case will be spray cleaned one last time before I mount the Cam Housing, note my trick in how I will hold the Crank at TDC when mounting the Cam Housing,

BTW, as I said long a go this engine has never been started, and it's manual refers it to a 2004 Version, so the engine was built around that time, yet, when I took the engine apart the Cam Housing Gasket and the Back Plate Gasket were not damage when the parts were separated, I think the Gaskets could be reused, but I have new ones to use, I will save the old ones for a while, that's very impressive for an engine that has set for some 14 years

Jim

Last edited by the Wasp; 05-20-2018 at 10:45 AM.
Old 05-20-2018, 10:39 AM
  #36536  
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They call it a Four Star 54, Sig must sell some junk engine that is a 54. The engine range is stated as .46 to .54. A .62 ought to do it.
Old 05-20-2018, 10:43 AM
  #36537  
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Jim, is the picture reversed or is the vent on the wrong side for 90 degree mounting, Thanks, Dave

PS, what is letter designation on the right lug, thanks again.
For those who like their wheels to be round and perfect, the Kavan wheels are perfect.

https://sigmfg.com/collections/acces...tandard-wheels

Last edited by Hobbsy; 05-20-2018 at 10:48 AM.
Old 05-20-2018, 10:56 AM
  #36538  
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oops, BTW, note how the digital camera shows how the engine and oil pics up tiny peaces of the paper towel, well I have 2 NIP non fraying cloth rags I will be using tomorrow when spraying off and putting the engine together, slick huu

Jim
Old 05-20-2018, 10:57 AM
  #36539  
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Dave, it's on the same side as the 100Ti

it will be mounted upside down

Jim

Last edited by the Wasp; 05-20-2018 at 10:59 AM.
Old 05-20-2018, 10:59 AM
  #36540  
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the Letter is a D

Jim
Old 05-20-2018, 11:02 AM
  #36541  
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And, Jim, don't forget Happy Harry's, Handy, Dandy Saito cam tool.
Attached Thumbnails Click image for larger version

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Last edited by Hobbsy; 05-20-2018 at 11:20 AM.
Old 05-20-2018, 11:21 AM
  #36542  
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Dave, here's my Cam Alignment Tool, I made it myself, it took a while, my Dial Calipers are broke, so it was a cut and fit, cut and fit deal, if you look close you may see that it is covered with packaging tap, so it wont scratch the Tappet Boars

Jim
Old 05-20-2018, 11:23 AM
  #36543  
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boy the digital camera really shows the scratches on the stove top

Jim
Old 05-20-2018, 11:26 AM
  #36544  
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Originally Posted by the Wasp
mg/www.rcuniverse.com-vbulletin/1500x2000/20180520_140143_resized_dcef37de13ac0dceb62162fb66 37c4611e9be350.jpg[/IMG]



Jim
You can eliminate the rod for holding the crank at TDC by just looping the rubber band around the bottom of the case..


Last edited by SrTelemaster150; 05-20-2018 at 11:28 AM.
Old 05-20-2018, 11:32 AM
  #36545  
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Originally Posted by the Wasp



Jim
Just imaging the increased lubrication of the bearings and valve train if you put an outlet check valve in that hole and an inlet check valve in the back plate. Not to mention improved evacuation of condensation from the case due to positive crankcase ventilation..

I would have placed it on the other side for better drainage when mounted horizontally to the starboard side.




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Old 05-20-2018, 11:38 AM
  #36546  
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Originally Posted by the Wasp


Dave, here's my Cam Alignment Tool, I made it myself, it took a while, my Dial Calipers are broke, so it was a cut and fit, cut and fit deal, if you look close you may see that it is covered with packaging tap, so it wont scratch the Tappet Boars

Jim
A 2mm Allan key slide into an inner piece of Sullivan Golden Rod is what I use.



Old 05-20-2018, 12:25 PM
  #36547  
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You can eliminate the rod for holding the crank at TDC by just looping the rubber band around the bottom of the case..
hey, that's even slicker LOL

Just imaging the increased lubrication of the bearings and valve train if you put an outlet check valve in that hole and an inlet check valve in the back plate. Not to mention improved evacuation of condensation from the case due to positive crankcase ventilation
LOL it never stops in this hobby, maybe I will try that

Jim
Old 05-20-2018, 12:37 PM
  #36548  
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I would have placed it on the other side for better drainage when mounted horizontally to the starboard side.
you know I went back and forth back in forth in where to place it, at first I wanted to place it where Bill Robison mounted his (on the top of the cam housing), but I could not find a photo of his, then I remembered the 100Ti and just liked it because the Cam would get a lot of oil being below the nipple when the engine is upside down, and the crank gear would not throw oil directly at the nipple because that edge is inside the case, ether way it will be better than on the back
Old 05-20-2018, 05:07 PM
  #36549  
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Originally Posted by the Wasp
you know I went back and forth back in forth in where to place it, at first I wanted to place it where Bill Robison mounted his (on the top of the cam housing), but I could not find a photo of his, then I remembered the 100Ti and just liked it because the Cam would get a lot of oil being below the nipple when the engine is upside down, and the crank gear would not throw oil directly at the nipple because that edge is inside the case, ether way it will be better than on the back

I think you did fine. I position similarly. Not trying to expel so much oil I actually prefer the older style housings as they give more options. If you have spare housings you can swap as needed. At the end of the day you can hold the plane with the vent low, spin the engine and expel the stale engine lube. Tip the other way to introduce ARO and further flush the cam box and bearings. Other folks have other methods, this happens to be my preferred method.

While the dual dual check system is positive the passive venting seems adequate when places well
Due to blow/by pressure, the average case pressure tends to remain positive.

A couple of tool pics pics as well. The obligatory pin type timing tool for small Saito along with another. The plate tool fits the spur gear teeth on big block Saitos This takes the place of the pin tool which is not usable with the big block engines.



Originally Posted by Hobbsy
They call it a Four Star 54, Sig must sell some junk engine that is a 54. The engine range is stated as .46 to .54. A .62 ought to do it.
Dave,
I think the main reason for the "54" designation is to set the Four Star 54 ARF apart from the Four Star 40 builder's kit. I built my first Four Star 40 almost 20 years ago. At first it was a bit plain vanilla with the Saito .50 but really came to life with the YS .53! Darn nice Sunday flier.
That one whetted my appetite for the Four Star 60 version. I initially had a Saito .91 on that one but later went to the YS .91AC . I now have the real Four Star 60 ready to go on the board; The Venture 60 by Bruce Tharpe. For old time's sake, it will be sporting a YS.

Last edited by Jesse Open; 05-21-2018 at 04:14 AM.
Old 05-21-2018, 05:59 AM
  #36550  
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A few more, it is all ready to maiden.





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