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Old 04-25-2018, 01:35 PM
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The 125 still smokes in the midrange, it's about a half turn rich on the LS needle.I'll get to that on a warmer less rainy day.
Saito 125 milliamp readings with CH Ignition 6 volt. The milliamp meter goes to 350 ma at 9,150 on the APC 16x6 and down to 200 at the 1,790 idle. The engine is uncannily smooth at all rpm except 3,500 where it's a we bit shaky, probably the LS needle. Ammeter roughly follows the tach up and down.
Old 04-25-2018, 03:01 PM
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Whats the overall weight of that with battery? That would be ideal for my P-51. Does it double time on fuel?
Old 04-25-2018, 04:18 PM
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I will weigh those components tomorrow, the battery is a 5 cell, 1,600 ma Hydra Max by Hobbico. The fuel saving is about 10% according to Dan.
Old 04-25-2018, 05:23 PM
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AC, I just realized, kinda slow like, that you're thinking gasoline fuel but I was running my regular Wildcat 10% full synthetic. Sorry I didn't pick up on that sooner.
Old 04-25-2018, 05:58 PM
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Originally Posted by Hobbsy



The 125 still smokes in the midrange, it's about a half turn rich on the LS needle.I'll get to that on a warmer less rainy day.
Saito 125 milliamp readings with CH Ignition 6 volt. The milliamp meter goes to 350 ma at 9,150 on the APC 16x6 and down to 200 at the 1,790 idle. The engine is uncannily smooth at all rpm except 3,500 where it's a we bit shaky, probably the LS needle. Ammeter roughly follows the tach up and down.
Thanks Dave, very close to the numbers that I gave in the OBG thread last week. There is a good reason the ammeter follows the RPM. More sparks in a given unit of time take more energy to make. It all comes down to (watts x time) You pay the bill by the size of the energy source needed,

BTW, I weighed the Saito CDI with cabling and a 5 cell, 2500 mah NiMH pack at 8 ounces not including the opto isolated kill switch which doesn't really weigh a lot anyhow.

BTW, in the case of OBG I usually use a much colder plug. This allows you to lean the engine out a bit and can help save a measurable amount of fuel. Since the plug is lit at idle (only at idle or just above idle) you no longer need the hot plug. You can also trim the nitro with OBG.

For the most part , with smaller planes; I still prefer to leave all that weight on the ground.I have in the past USED (quite a bit in the early 1980s) and no doubt will again use CDI systems. Mostly for the larger planes and floater type.
Mostly for the tinker factor .
Old 04-25-2018, 07:52 PM
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BTW, in the case of OBG I usually use a much colder plug.
hmmm, now that's an interesting thing to know

now what about that prop, why does it look chromed, is it just an optical illusion, or a photo illusion ?? LOL

Jim
Old 04-26-2018, 12:51 AM
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The apc prop performance in flight does make them look like this jim,the wooden one's and some of the ugly plastic graupners sometimes combust without warning.
Old 04-26-2018, 01:05 AM
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Originally Posted by Hobbsy

Yep, they are pretty weak, mine will only lift the front wheel in 1st gear and bump it up for a few feet in second and hold it at the upper suspension limit in 3rd.
Dave you have a quirky sense of humour.Since 1985 i've been straightening harley frames that are accident damaged in a hydraulic frame straightening jig with the engine in situ.Once the bike is taken out of the jig and reassembled i HAVE (sob) to test ride it and sign off on it for the insurance company and the customer.Generally speaking,if you wish to wheelie any model harley that requires some outstanding abuse of throttle/clutch/gearbox and drivetrain,not to mention the huge thump when the front wheel comes down and hits the road,sometimes all that weight blows fork seals.

Jesse that was a good read re the cold plugs and OBG i guess you can stand down and rest easy over the search and rescue mission but don't put the trumpy back in the shed yet...i think dave is mixing his meds up before going for a ride sometimes

Last edited by Rudolph Hart; 04-26-2018 at 01:11 AM.
Old 04-26-2018, 01:28 AM
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Originally Posted by the Wasp
hmmm, now that's an interesting thing to know

now what about that prop, why does it look chromed, is it just an optical illusion, or a photo illusion ?? LOL

Jim
No illusion. The prop is chromed.

After seeing that Bozo doing a wheelie on a Harley I am starting to wonder. Better leave the bike home when doing a search-rescue for Dave. Iíll take the wrecker with a stretcher rig instead.
Old 04-26-2018, 02:52 AM
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I plan on running the 100 today with the unit marked 4.8 volts.

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Old 04-26-2018, 03:37 AM
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Originally Posted by Jesse Open


No illusion. The prop is chromed.

After seeing that Bozo doing a wheelie on a Harley I am starting to wonder. Better leave the bike home when doing a search-rescue for Dave. Iíll take the wrecker with a stretcher rig instead.
Just in time jesse that stretcher rig should do him a power of good can't you see he's just fading away on 4.8 volts when he knows dang well he should be on six.

ps here's some good reasons to drag that stretcher thru aussie with dave on it mate...some out in the desert artwork and an outback roadhouse sign.If you read between the lines the snakes whizz in there to eat the green tree frogs that like damp spaces and the frogs go in to eat the cockroaches and so it goes on down the chain,you can see it's a pretty violent place
Old 04-26-2018, 03:42 AM
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Old 04-26-2018, 06:35 AM
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Originally Posted by Hobbsy
AC, I just realized, kinda slow like, that you're thinking gasoline fuel but I was running my regular Wildcat 10% full synthetic. Sorry I didn't pick up on that sooner.
RE the 125 in the Stang, that one would be Glow, Wildcat 15% 2&4, and SIG 4S 15%. It would be one of the only ones I would convert to CDI due to what it is installed in. When I get tot he B-17 and B-29 those may be either the FG, or a converted glow to CDI and glow.
Old 04-26-2018, 08:26 AM
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an interesting find on a new Saito part here


so guys, I found this that makes me wonder if you Saito guys knew about it ?
well when I knew I was going to move my breather nipple from the back to the front I ordered some parts, one was a new nipple just to have in case (<no joking LOL) (PT# SAI6519),


well the new nipple is made slightly different, the hole at it's tip is smaller than it is in the middle,, I have to think this would keep more oil in the case,

so did any one notice this before ??

BTW, (today) the 100, 125 and 150 use the same nipple

Jim

Last edited by the Wasp; 04-26-2018 at 08:39 AM.
Old 04-26-2018, 08:29 AM
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and now the site is screwing up again, some of what I typed is not there, I will see if I can edit

Jim
Old 04-26-2018, 08:32 AM
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wow, it wont let me post the part number,,

well the part number is "SAI6519"

BTW, I have never had this problem on any other site

Jim
Old 04-26-2018, 08:41 AM
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and here it did not show my post, so I reposted it, and then of course after I reposted it the post showed up,, crazy

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Old 04-26-2018, 08:48 AM
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No illusion. The prop is chromed.
well that would be cool if it was, like on my older TX,, but that plastic chrome stuff gets bridle over time, specially if fuel droplets set on it

Jim
Old 04-26-2018, 08:51 AM
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Originally Posted by the Wasp
well that would be cool if it was, like on my older TX,, but that plastic chrome stuff gets bridle over time, specially if fuel droplets set on it

Jim
It would be downright dangerous if I actually flew the plane with it That is an old display prop. I just used it for fitting the spinner as it was all I had handy.

But, yes it really is vacuum chrome metalized.
Like all of the ancient transmitters that I use!

Last edited by Jesse Open; 04-26-2018 at 08:53 AM.
Old 04-26-2018, 09:53 AM
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Saito 62b vent


Left is Saito 56, next is FA 40a, bck is 1980's 80 and right is the latest 125 with the smallest vent. It may be a clue that the two newest engines have the small vents. The engine by itself is a brand new unrun 62b, again a small vent
Old 04-26-2018, 10:01 AM
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MA at idle

I just,put 12 oz of fuel through the Saito 100 with a CH Ignition marked for 4.8 volts and powered by a 4.8 volt HydraMax pack. It of course uses more current than the 6 volt unit using 250 ma at idle and going to 400 ma at 5,500. It may be higher but that's the meters limit.

Last edited by Hobbsy; 04-26-2018 at 10:04 AM.
Old 04-26-2018, 11:35 AM
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Dave,
I can send you an analog meter that reads 1000 ma full scale.

This is one of my favorite vent relocation points for Saito engines I make little 90 degree elbows to keep things tight


Last edited by Jesse Open; 04-26-2018 at 11:43 AM.
Old 04-26-2018, 11:39 AM
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Lower voltage, higher current, makes sense. Higher the voltage, the less current needed. How long did the 12 ounce last?
Old 04-26-2018, 03:38 PM
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That looks good Gary, very practical in pointing the vent in a better direction

AC, that 12 oz ran it for about 25 minutes but I wasn't pushing it.
Old 04-26-2018, 03:51 PM
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That's good, usually I'm down in 15.

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