mike early

I imagine the smaller engines can handle higher RPMs better than the larger ones, but I like a 10x8 or 10x9 on my .40. On acrobatic planes a 11x5 or 6 is good.

mike early

One day I am going to try the larger revolver with a saito 100...or 115-125..

Can you show me a closeup photo of that radio hanger? We set our radios down on our tables and sometimes the bind plug gets pushed in...

lopflyers

My Feedback: (12)

Its nothing fancy, just two hooks and you hang the radio by the handles. Its very handy especially to tune the engine hands free.
The 100 pull the Revolver just fine, not too fast and really good for landing. I guess those with the need for speed can use a larger faster engine

jeffie8696

In the near future Iwill try some different props, I just love to experiment. Ihave a 10X8 Scimitar Icould try out but Iwas thinking maybe a 10X7 MA wood also.
It flew so darn well on the current setup I was totally impressed.

Cougar429

My Feedback: (3)

Maidened Rare Bear yesterday and the 125 only needed slight HS needle tweaking. Considering the temp was pushing 95F I'm not surprised. Ran it on the rich side and the only wood prop I had was a 13/8. I know, bottom end of the range[&o].

Motor behaved well and pulled that 13lb sled with authority.

Mike, Our club has similar starting/run up benches and the radio hangars are simply bent alloy plates.

Hobbsy

My Feedback: (102)

Cougar429, I'm gussing that the 429 is a referrence to the FE Ford engine, did you know that in 1960 Ford made a 302. we had one on our farm in a 1960 Ford C600 dumptruck. The engine was a Lincoln Y block and came in these sizes.

279 3.562 in (90.5 mm) 3.500 in (88.9 mm) 152 hp (113 kW) 246 lb·ft (334 N·m) 1954 Ford heavy duty trucks
302 3.625 in (92.1 mm) 3.660 in (93.0 mm) 196 hp (146 kW) 1955-1963 Ford heavy duty trucks
317 3.800 in (96.5 mm) 3.500 in (88.9 mm) 160–205 hp (120–153 kW) 284–305 lb·ft (385–414 N·m) 1952-1954 Lincoln and Ford HD trucks
332 3.800 in (96.5 mm) 3.660 in (93.0 mm) 212 hp (158 kW) 1955-1963 Ford heavy duty trucks
341 3.940 in (100.1 mm) 3.500 in (88.9 mm) 225 hp (168 kW) 332 lb·ft (450 N·m) 1955 Lincoln
368 4.000 in (101.6 mm) 3.660 in (93.0 mm) 285–300 hp (213–220 kW) 402–415 lb·ft (545–563 N·m) 1956-1957 Lincoln and Mercury


PS I'll remove this post after you see it.

Hobbsy

My Feedback: (102)

Mike, I don't know if you were following my efforts to install a C&H ignition on my old High Compression Saito 1.50.

It runs and runs very well, I did manage to kick the prop oloose once when I got it too, I guess at 15.6 to 1 compression it can self ignite without a glow plug wne lean.

Top rpm with Mejzlik 16x8 is 8,950 that's about 150 rpm better than glow at 15%.
Picture #1 shows running about 6,000 rpm
Picture #2, shows Perry pump which I did not use. I did use a Cline regulator, I worried that the Perry would drown the plug.
Picture #3 shows serious bulge in stiff walled Sullivan tank, the fire hose nozzle muffler makes serious pressure.
Picture #4 shows tight spacing, could not install TurboHeader, yet. I gotta cypher on that a while. With the timing at 30 degrees BTC I am pleased.
Picture #5 show prop.
Idl is 1,700 with no hint of quitting.
Fuel==WildCat 15% 2/4 with ful synthetic.

Cougar429

My Feedback: (3)

Hobbsy, you're correct. In one career I owned a shop and stuffed a 429 Interceptor into my 75 Cougar when the stock 400 slug died. Considering I've had a Lamborghini to 190 MPH and test driven a real Cobra, (yes, it will do 0-100 and back to 0 in less than 10 seconds if you can tolerate it) the Cougar was lots of fun to drive if you kept it under 110 MPH. I pegged the speedo on it several times and estimate approx 155 MPH top speed. Hard to tell as it still had some left to give there.

p.s. Along with the Cobra the Pantera was a hoot to drive. Both were pretty uncivilized machines compared to today. My dream machine is the modern version of Eleanor featured in the latest "Gone in 60 Seconds".

Anyway, would like the best prop options for the 125 in both 2 and 3-blade versions. I have a Graupner 14-7 3-blade. Still looking for a matching 3.5" spinner.

SrTelemaster150

I too gained 150 RPM over glow ignition when I ran my (standard compression) FA150 on C&H ignition. I got 7700 W/a Dynathrust 18X8 on glow, 7850 W/the same prop on EI W/23% longer run on the same fuel load. 15% Cool Power fuel. (no castor)

spaceworm

Hi Dave. How do you tell if your FA-150 is the Hi Comp version? I tried hand starting a new FA-150 of a friend and it almost cut through a heavy leather glove trying to get to my fingers.[]

Happy Independence Day tomorrow. Several of us are getting together at the FARCC field tomorrow; come on up if you can. I may not stay through the full heat of the afternoon though[]

Hobbsy

My Feedback: (102)

Richard, my 1.50 was bought in either 1991 or 1992, my daughter got it for me for Christmas, it was among the first 1.50s shipped to dealers, in my case that is Apex Hobbies in south west Va. Tazewell to be exact. They had black cases with chrome rocker covers like some of the `1.20s of the time.

Hobbsy

My Feedback: (102)

SR, I just got another pleasant surprise, I've always said that the high compression 1.50 and .80 would run as well on 5% fuel as on 10 or 15%. I just ran the 1.50 on WildCat 5% Premium Extra/ 18% 80/20 blend to which I had added 2.6 oz of castor. it turned the Mezlick 16x8 at 8,850 on that fuel. There was another different component, I was running the more modern cast muffler this time but I don't think there is a performance gain from that. An unused fuel tank makes a handy iignition and battery box.

SrTelemaster150

I was wondering what sort of characteristics that short manifold has compared to the (stock) long updraft manifold.

SrTelemaster150

Once you see the advantages in user friendliness & fuel economy you'll soon be wanting to convert all of your Saitos to EI. At least the ones .91 & larger. Not to mention about 5% more HP.

SrTelemaster150

BTW, I use a Perry (oscilating) pump on my EI FA150 W/no problems. I like to mount the fuel tank over the CG & the Perry pump allows that W/O issues.

SrTelemaster150

What is your initial timing advance setting? I use 28* BTDC. Have you tried advancing the timing beyond 28* BTDC? On E85 I gained 300 RPM by advancing the timing to 35* BTDC but I have not experimented W/more timing on glow fuel W/the FA150. My 300TTDP seemed to like 28* just as well as more advanced settings so I left it @ 28* when running the 15% Cool Power.

I think the lack of nitro in the E85 mix accounted for the improved performance W/more timing advance. You might be able to get the same power out of the lower nitro fuel W/more ignition timing advance.

FNQFLYER

Like the comments about the cars.  My moments of madness included a Ford Zephyr with a fuel injected 289 Ford up front, with jag drive line and an FX Holden wioth A9X front end and a wrong way 396 Chev up front through a 2 speed C$ (I think).
My current ride is a fully homogulated Datsun 260Z that I guard (read hide) here in FNQ from my sons and daughter.
Re the 150 is that the twin plug version.  I had one of those and a twin plug 120 that I swapped for a G500 ST plus numerous go faster bits and an OS40P BIG mistake. 

Hobbsy

My Feedback: (102)

My 1.50 is a single plug, I considered a two plug cylinder when I ham fisted the intake threaded boss right off the head. I could have gotten a right cylinder like the 3.00 twin plug. I do have the carb mount for the 3.00 right cylinder. It does not fit my 1.50 cylinder though.

FNQFLYER

question, why (apart from running in) do people use wooden props on big Saitos.  The fly wheel effect you get from the heavier composites aid starting and generally ensure more efficient and less fuel burning (I used that term rather than economical) engine runs.  In Texaco (O/t) it ensures every drop of fuel is used in this fuel allocation event.
I have used wooden props (in the old days) to run in Rossis, method goes like this start engine, peak out (not throttle in those days) then jam a metal rod into prop arc, if engine survives (maybe 1 in 100 doesn't) you have a fully de stressed engine ready to race.  Before you go off rubbishing this look back in Aeromodeller (late 60's and mid 70's editions) and it shows the Italians doing this for their pylon racers.
Mind you I didn't do it to many times I had more respect for my wallet in those days 

FNQFLYER

Query again, I have a need for some more 65's (don't like swapping engines between planes that I am flying.  Any body have any they don't want???
Or am I dreaming I have 2 and have a requirement for at least 3 more

Hobbsy

My Feedback: (102)

Here is a shot of the carb mount for the right carb on the 3.00 twin DP, it won't work on the 1.50 cylinder because the 16mm threads and the 3.00 carb adapter has 14mm. To be more accurate the the 3.00 one takes a 14mm wrench and the 1.50 one takes a 17mm wrench. The bore size in them is the same.

Hobbsy

My Feedback: (102)

SR, the initial tinig is at 30 degrees BTC and the short carb mount did not alter the performance at all.

SrTelemaster150

Here's my 26 MPG, 4200# "Redneck Mercedes" doing some passes.

1st, some N/A passes:

[youtube]http://www.youtube.com/watch?v=T-Sbz2Etl_A[/youtube]



Here's a pass W/a 125 shot of nitrous that ran out just before then traps. It was a 5.7 powered LX record at the time.

[youtube]http://www.youtube.com/watch?v=KhG0KlXEOnU[/youtube]

Hobbsy

My Feedback: (102)

Tomorrow I'm going to run it with this Desert Aircraft 18x6 I bought years ago for my Quadra 35. Its drilled for a six bolt hub but will work fine.

Cougar429

My Feedback: (3)

Not sure about wooden props only for break in. I opted for that one till I learned the ground handling on Rare Bear. As with all tall legged taildraggers it has a tendency to nose over at the slightest opportunity and wood props are more forgiving.

This proved to be the case as it went over several times before finally getting airborne and again when trying to turn it back downwind after landing. Quite the walk to go get it!

Here's the vid. Takeoff was interesting as it requires far less control throws than expected and it lept off the ground before I thought to raise the tail.

For some reason it will not let me direct link.

http://www.youtube.com/watch?v=CAMpv...ature=youtu.be