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Old 04-08-2019, 03:59 AM
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Hobbsy
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Saito 65 fuel inlet early carb, 5 x .5 thread.


Saito 65 fuel inlet assembly, complete, early carb.
When screwing this onto the carb body, be aware that it can be screwed in too far and run into the carb barrel blocking the fuel flow and possibly pushing the barrel through the snap ring on the lever side.
Old 04-08-2019, 04:17 AM
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Kind of unique one-of-a-kind thing.
Old 04-08-2019, 04:19 AM
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I just realized why I like this thread so much. We all have the old fashion idea of if something breaks we fix it. We don't use it, abuse it, throw it away like the younger generation of today.
Old 04-08-2019, 04:23 AM
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Probably the same o ring groove. May have to resistance "braze" the silver soldered fuel connection. Hard to do with even the jewelers torch but should work well on the big soldering transformer with a pair of carbon rods.

Originally Posted by Glowgeek
"There's no replacement for displacement"
Yep, Thats why in AMA racing, Harley was allowed to run their 750cc engines against 500cc Britbikes in the early 1950s

Last edited by Jesse Open; 04-08-2019 at 04:41 AM.
Old 04-08-2019, 04:37 AM
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Originally Posted by Jesse Open
May have to resistance "braze" the silver soldered fuel connection. Hard to do with even the jewelers torch but should work well on the big soldering transformer with a pair of carbon rods.
This right here ^^^^^^^ is why I like this thread. I learn something new most every day. Had to google "resistance soldering" to see what it was all about. Pretty nice science for delicate work. No doubt Gary fab'd his own RSU....lol

Last edited by Glowgeek; 04-08-2019 at 04:39 AM.
Old 04-08-2019, 04:52 AM
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Originally Posted by Jesse Open
Probably the same o ring groove. May have to resistance "braze" the silver soldered fuel connection. Hard to do with even the jewelers torch but should work well on the big soldering transformer with a pair of carbon rods.


Yep, Thats why in AMA racing, Harley was allowed to run their 750cc engines against 500cc Britbikes in the early 1950s
Considering that the K models were flatheads and the Brits were OHV the extra displacement was understandable.

Once the Sportsters went o OHV the game changed.

Soon they were all running 750 "V" twins with chain drive on 1 mile dirt flat tracks..

Last edited by SrTelemaster150; 04-08-2019 at 04:57 AM.
Old 04-08-2019, 04:56 AM
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These pieces were assembled by resistance brazing with hard silver solder.
Old 04-08-2019, 05:23 AM
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Originally Posted by Rudolph Hart
About the same if it just crawls off the runway and cruises through the wait awhile bushes/trees,it's always the first section that you find on a recovery mission just kidding.Bruce you should have got two small wire tools,one has a flat blade screwdriver tip for the hsn and the other is threaded for the choke.Tuning one is very different to our fa engines.
Nope no such creature in the bag of tools. Just the valve adjusting wrench, feeler gauge, spark plug socket and 4 allen wrenches. Only other items were the bolts, T-nuts and lock washers for the firewall mount. Guess I will contact Horizon on this.
Old 04-08-2019, 05:24 AM
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The needle assemble had no O-ring on the early carb, it does now but there is no groove for it, the O-ring just ended up inside the needle clip. I probably wasted it. Those resistance solder machines are expensive. I put fake Swak on the threads.
Old 04-08-2019, 05:43 AM
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Originally Posted by Jesse Open


These pieces were assembled by resistance brazing with hard silver solder.
What material specs did you use for the brass pipes? I don't need pressure taps, but think it would look cool with brass exhausts.
Old 04-08-2019, 05:43 AM
  #40011  
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Dave,
Thanks for the info, Ill see it if and when he sends it.
The resistance solder machine I use is just a big transformer with multiple taps. I make up carbons as needed. Paid all of $35 for it at a local flea market. Just about any low volt/ high amperage transformer will do if used with a 15 amp variac on the primary. Just have to know what it takes and where to look.
I get the carbon blocks as scrap leftovers from a local EDM guy that I used to build machinery as a "side job" for.

Originally Posted by SrTelemaster150
Considering that the K models were flatheads and the Brits were OHV the extra displacement was understandable.

Once the Sportsters went o OHV the game changed.

Soon they were all running 750 "V" twins with chain drive on 1 mile dirt flat tracks..
That is the point.
In that case, a superior engine design more than replaced the displacement. It has been going on ever since then. BTW, The 750 Harleys were still often beaten by 650cc BSA and Triumph riders as well
Old 04-08-2019, 05:49 AM
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Question on props. When completed I will be using a 16x8x3 biela prop on the FG-30. Before that though what would be the equivalent 2 blade prop in size for the same amount of resistance. 17x6 or 18x6? It will be a while before I get the actual props, going to wait until after the first flight.
Old 04-08-2019, 05:51 AM
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Originally Posted by Jesse Open


These pieces were assembled by resistance brazing with hard silver solder.
Jesse,

You are a true craftsman. That is some fine work. Never knew such an old Saito carb existed so its be amazing if you can get it going again.
Old 04-08-2019, 05:54 AM
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The prop range for the FG 30 is fairly broad: Prop Range:15 x 8 - 18 x 6

The early carb is unusual in a couple of ways, it has angled spray bar for one.
Old 04-08-2019, 05:54 AM
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While on a trip to Denver a couple of days ago I stopped by a BMW motorcycle shop to check out some bikes. I made the mistake of demo riding the new 1250 GS. Wow! That boxer engine. Now I want one.
Old 04-08-2019, 07:47 AM
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Gary, the Saito 50/56 baloney muffler should arrive today.
Old 04-08-2019, 08:03 AM
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Originally Posted by acdii
Question on props. When completed I will be using a 16x8x3 biela prop on the FG-30. Before that though what would be the equivalent 2 blade prop in size for the same amount of resistance. 17x6 or 18x6? It will be a while before I get the actual props, going to wait until after the first flight.
When I used 3 bladers for my warbirds I followed the general rule of going down 1" in diameter when moving from 2 blade to 3 blade props. It was fairly close sometimes but as always it depended a lot on who manufactured the props. There are some load factor formulas to be found with a little searching.
Old 04-08-2019, 09:39 AM
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Originally Posted by Rudolph Hart
About the same if it just crawls off the runway and cruises through the wait awhile bushes/trees,it's always the first section that you find on a recovery mission just kidding.Bruce you should have got two small wire tools,one has a flat blade screwdriver tip for the hsn and the other is threaded for the choke.Tuning one is very different to our fa engines.

Jim i went for a ride on the duke last sunday with two mates,one on a ktm 1290 v-twin and the other on a stroker harley with a lot of ground clearance and sticky race rubber.It may sound funny,but as a group we like to go 'slow around corners' harley hunting (well,i spose you would call them victims) and it was a sunny afternoon up in the hills.Our first targets appear and a pizza van whizzes past in the opposite direction.I was already smiling but then i remembered your pizza post and started to giggle in my helmet,there's no way you can drive or ride fast like that,so you got cursed over a beer later cause the harley rider creamed me.
LOL you laughing about my reply at 110MPH, just too funny,
you got to stay focus man at 110

Jim

Last edited by the Wasp; 04-08-2019 at 04:10 PM.
Old 04-08-2019, 10:09 AM
  #40019  
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Originally Posted by Jesse Open
Probably the same o ring groove. May have to resistance "braze" the silver soldered fuel connection. Hard to do with even the s torch but should work well on the big soldering transformer with a pair of carbon rods.


Yep, Thats why in AMA racing, Harley was allowed to run their 750cc engines against 500cc Britbikes in the early 1950s

my brother's old friend is a jeweler, I can see myself now in his shop, " Hi Tim, remember me ? I'm Tom's brother, can you solder this for me, it's for the Carb on my plane, but don't use gold" LOL

Jim
Old 04-08-2019, 10:23 AM
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Gary, I sent you a PM, thanks

Jim
Saito Engines, the name fits
Old 04-08-2019, 10:39 AM
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the Wasp
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Originally Posted by Jesse Open


These pieces were assembled by resistance brazing with hard silver solder.

Gary, I agree that's a cool looking pipe, but is there a reason why the pressure feed is so long ??

Jim
Old 04-08-2019, 10:45 AM
  #40022  
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Hmm I just remembered that I might have a Slimline PITTS for the 180. I will have to dig it up and see if it fits the 30.
Old 04-08-2019, 02:36 PM
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This should work also tossing the spray bar.


Saito 120/150 spray bar
This may be a possibility from the Saito 150 parts list.

Last edited by Hobbsy; 04-08-2019 at 02:46 PM. Reason: Add picture
Old 04-08-2019, 02:43 PM
  #40024  
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Originally Posted by the Wasp
Gary, I agree that's a cool looking pipe, but is there a reason why the pressure feed is so long ??

Jim

Because it is far easier to cut than add on to.
I wanted enough to make a bend as well.
Old 04-08-2019, 02:44 PM
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Originally Posted by Hobbsy


Saito 120/150 spray bar
This may be a possibility from the Saito 150 parts list.
Already picked one up. Part of the plan.Have the 65 NVA on hand as well but ordered another earlier today.
Not too worried, an easy fix whatever direction.

Here ya go, got it handled. He is sending the carb. His engine should be running by the weekend.

Last edited by Jesse Open; 04-08-2019 at 03:18 PM.

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