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Old 08-29-2021, 05:03 PM
  #51101  
the Wasp
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I still have my 100 Twin I got in a traded with Dave, and now my 100GK. and I still have my 115 that my friend Garry gave me a good price on. I the 82 that Dave and Capt sent me I gave to Mike OKC. and I have the 91 Capt and Dave sent me. they sure will not be sold

thank you guys !!!
Jim
Old 08-29-2021, 05:41 PM
  #51102  
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hey guys, I think I know how to fix that seat on the 91.

to make a tool to cut the seat on the lathe, turn down some drill rod with a step on it, the small end will fit deeply into the intake port from the inside of the cylinder, and the step will have the correct angle cut in it for the seat. then (carefully) use course valve grinding compound to cut the seat, then once the seat is cut use a fine compound to hone the seat smooth.

my problems are.
1) I have turned drill rod on my lathe before, but it was pretty hard on my lathe.
2) I really do not have the correct cutter for this job.
3) even if I knew the correct degree of angle I need for the seat I don't think I can cut it accurately on the drill rod with the lathe.

Jim

Last edited by the Wasp; 08-29-2021 at 05:44 PM.
Old 08-29-2021, 07:11 PM
  #51103  
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Jim,
Lapping is not a good means to cut that seat adequately. A real, formed cutter is a better bet. For a one shot cutter on aluminum plain carbon steel would suffice. The angle of the cutter face should be very accurately cut, and a pilot bore provided on center and true. Piloting on the guide bore is your best bet. The actual cutting flutes could be milled, ground or even hand filed and finished by hand with a slip stone. You may want to visit a cutter sharpening shop and get some quotes or suggestions. Often the work can be had for a six pack of good brew. Consider as well a second cutter to at least level the top of the seat ring for a two angle job.
Old 08-29-2021, 08:40 PM
  #51104  
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Originally Posted by Jesse Open
Jim,
Lapping is not a good means to cut that seat adequately. A real, formed cutter is a better bet. For a one shot cutter on aluminum plain carbon steel would suffice. The angle of the cutter face should be very accurately cut, and a pilot bore provided on center and true. Piloting on the guide bore is your best bet. The actual cutting flutes could be milled, ground or even hand filed and finished by hand with a slip stone. You may want to visit a cutter sharpening shop and get some quotes or suggestions. Often the work can be had for a six pack of good brew. Consider as well a second cutter to at least level the top of the seat ring for a two angle job.
I understand that. but I don't have access to all that, there are no shops like that around here for hundreds of miles that I know of

Jim

Last edited by the Wasp; 08-29-2021 at 09:05 PM.
Old 08-30-2021, 04:30 AM
  #51105  
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Hey guys did you see this:

https://www.rcgroups.com/forums/show...i-Head-Rare%21
Old 08-30-2021, 04:33 AM
  #51106  
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Originally Posted by the Wasp
I understand that. but I don't have access to all that, there are no shops like that around here for hundreds of miles that I know of

Jim
I hear you, get a bit spoiled being raised in an industrial area, working with the stuff daily for years. I did describe earlier making a cutter from an old valve using hand tools.
Most likely a lot easier in any event to simply hunt down a good cylinder.
I will keep an eye out for one,
In the mean time I do have a spare FA-100

Old 08-30-2021, 07:54 AM
  #51107  
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Originally Posted by FlyerInOKC
Not bad. I have no need for it though unfortunately. Having a hard enough time just getting the ones I have on planes. And just today I discovered that I am on call the week of the SIG fly in and may not be able to go. What a bummer.
Old 08-30-2021, 08:00 AM
  #51108  
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That really sucks!
Old 08-30-2021, 12:15 PM
  #51109  
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Originally Posted by acdii
That reminds me, need to find out if he is going to the fly in next month. I am still trying to figure out how to get both trailers over there, one to the camp site, the other to the field.
He talked yesterday as if he were going to Sig Fest.
Old 08-30-2021, 12:41 PM
  #51110  
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Originally Posted by modeltronics
Dave, I’m glad you like the 56 I sent you. I wish I would have had some time to disassemble it and run it through the ultrasonic cleaner before I sent it to you. I am interested to know where you get the HY props. I still have some original Bolly props here and like them very much.

The FA 40-a left the PO at 11:52, E-mail with Track # sent. A rear facing vent will follow.

The one I send will be aluminum.

Like this but the FA 40-a is on the cam box.

Last edited by 1200SportsterRider; 08-30-2021 at 12:46 PM.
Old 08-30-2021, 01:08 PM
  #51111  
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Originally Posted by 1200SportsterRider
He talked yesterday as if he were going to Sig Fest.
I usually text him, so will do that later once I find someone to swap weeks with for On Call.
Old 08-30-2021, 02:57 PM
  #51112  
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Pedro is getting an FA-40! A good match for that plane you mentioned.
Old 08-30-2021, 03:33 PM
  #51113  
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Dave, as an alternative to the screw in threaded hosebarb; You can simply turn one on your lathe without the threads. Sweat soldered in place it makes a leak tite, compact joint. Yhe price is right too,
Of course there are places where the two piece is the way to go; like when you have no room to swing the one piece into place



Last edited by Jesse Open; 08-30-2021 at 05:21 PM.
Old 08-30-2021, 04:56 PM
  #51114  
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Hi guys
yes I plan to go to Sig. I believe I am part of the planning and set up crew.
I need to get down and talk to the guys. And gals.
also need to figure out how to get my planes down there myself.

also Dave is right I have a few engines that I have received and tried for that I will not sell.
But with that said I have a pile of engine’s that I have purchased over the years and I probably won’t sell them either.
Old 08-30-2021, 05:10 PM
  #51115  
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What, can't fit them in your Mustang? How far are you from the field?
Old 08-30-2021, 05:43 PM
  #51116  
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Lol
the rascal doesn’t fit in the van
and the trailer is shot and fall stuff
Old 08-30-2021, 06:14 PM
  #51117  
the Wasp
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Originally Posted by Jesse Open
I hear you, get a bit spoiled being raised in an industrial area, working with the stuff daily for years. I did describe earlier making a cutter from an old valve using hand tools.
Most likely a lot easier in any event to simply hunt down a good cylinder.
I will keep an eye out for one,
In the mean time I do have a spare FA-100

LOL LOL LOL LOL I don't need a 3rd one LOL LOL

Jim
Old 08-30-2021, 07:04 PM
  #51118  
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LYIAO


Just sold my #3 FA-91S (cheap) for partially the same reason, two are already too many !
Would have given it to the right person. Didn't know you were looking for one till after it was gone.

Do you still want the 91 cylinder?

LOL





Last edited by Jesse Open; 08-30-2021 at 07:26 PM.
Old 08-30-2021, 08:15 PM
  #51119  
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Originally Posted by Jesse Open
LYIAO
Just sold my #3 FA-91S (cheap) for partially the same reason, two are already too many !
Would have given it to the right person. Didn't know you were looking for one till after it was gone.

Do you still want the 91 cylinder?
LOL
yes I do, the engine I have is all rebuilt. but that cylinder is all messed up. but I can't see you taking a good engine apart just for me

Jim
Old 08-31-2021, 01:57 AM
  #51120  
1200SportsterRider
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Thanks Gary, I have plenty of .125" brass tubing. The brass is showy too.
Old 08-31-2021, 02:36 AM
  #51121  
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Dave
I can't wait to get the little 40. Traking looks like I will have it Friday. I hope to run it on the bench on Saturday.
Old 08-31-2021, 02:41 AM
  #51122  
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It could stand another 30 minutes of break in.
Old 08-31-2021, 04:00 AM
  #51123  
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Yep Dave, the 1/8 brass works great You can even sweat a short ring of 1/8" ID tube on top if you want a retention barb.



Jim, I will be looking for the .91 cylinder for your engine. Too bad the still in production and very similar 182 cylinder wont work!
Old 08-31-2021, 05:12 PM
  #51124  
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Originally Posted by Jesse Open
Yep Dave, the 1/8 brass works great You can even sweat a short ring of 1/8" ID tube on top if you want a retention barb.

Jim, I will be looking for the .91 cylinder for your engine. Too bad the still in production and very similar 182 cylinder wont work!

yeah I thought about the 182 cylinder back a couple weeks for a moment. thanks for helping ! I sent the Capt a PM, but I think he is working vary hard or he would be posting more.

Jim
Old 08-31-2021, 05:27 PM
  #51125  
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Garry, I was going to post a wanted post on RCG for a cylinder after I heard from Capt, if you find one have them send it to me (if they will). then I will send you a check. again, thanks for helping !

Jim

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