SPE 40cc
09-06-2007 | 03:40 PM
#101
RE: SPE 40cc
Hi Dave
Great to hear from you!! Zac still loves his Komet and the P47 is flying again. Was going to the electric fly in at Coolum this week end but its been canceled as the field is under water!
haven't fired it up yet as I am still building the Extra 260. There is a thread on this site on the build of the 260 with mentions to the SPE:
http://www.rcuniverse.com/forum/m_56...tm.htm#6308362
I bought a JXF 20x10 prop for it from PA and just need to buy a 3" spinner. Bought a 18x10 Zinger but was told to use it for stirring paint![&o]
I did buy a velocity stack for it as well.
Be interested to see how you go with the engine.
What are you mounting it in?
Great to hear from you!! Zac still loves his Komet and the P47 is flying again. Was going to the electric fly in at Coolum this week end but its been canceled as the field is under water!
haven't fired it up yet as I am still building the Extra 260. There is a thread on this site on the build of the 260 with mentions to the SPE:
http://www.rcuniverse.com/forum/m_56...tm.htm#6308362
I bought a JXF 20x10 prop for it from PA and just need to buy a 3" spinner. Bought a 18x10 Zinger but was told to use it for stirring paint![&o]
I did buy a velocity stack for it as well.
Be interested to see how you go with the engine.
What are you mounting it in?
09-06-2007 | 03:54 PM
#102
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From: Palm Harbor, FL
RE: SPE 40cc
best spinners and prices in the USA are from Valley View RC. www.valleyviewrc.com I have never had one fail or bend but have had two tru turns go south on me. tru turn is too flimsey.
09-06-2007 | 04:48 PM
#104
RE: SPE 40cc
Many thanks Phil!
I just sent an email to Valley View for a quote on shipping.
Interesting news about True Turn as I see them on most of the Comp ARFs at our club. Precision Aerobatics have a meal spinner as well here in Australia but are out of stock.
What fuel mixture did you use for break in?
I just sent an email to Valley View for a quote on shipping.
Interesting news about True Turn as I see them on most of the Comp ARFs at our club. Precision Aerobatics have a meal spinner as well here in Australia but are out of stock.
What fuel mixture did you use for break in?
09-06-2007 | 05:09 PM
#105
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From: Palm Harbor, FL
RE: SPE 40cc
fuel mix to start was 32 to 1. in the US that is 4oz to i gallon. after 3 gallons I will switch to amsoil 50 to 1. I must say that at 32 to 1 there is absolutly NO smoke or residue left on the plane. I use Mercury outboard engine oil that can be mixed as low as 100 to 1 in an oil injected outboard engine. Come to think of it I may not switch. Why fix what isn't broke. Here are some pics of the engine and plane.
09-06-2007 | 07:21 PM
#107
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From: campbell,
CA
RE: SPE 40cc
Quick question does anyones 40 vibrate?? mine seems to excessivley if it gets below about 2000 rpms. the motor is brand new, using the stock melody ign, 19x10 prop(balanced). any ideas????
09-07-2007 | 12:07 AM
#112
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From: campbell,
CA
RE: SPE 40cc
That's a nice vid!!! tons of power, this extra i'm building should only be in the 10 lb range. Even with the heavier airplane what kind of run times do get and what size fuel tank are you running??? I'm pretty sure this has a 12oz tank.
09-07-2007 | 02:41 AM
#114
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From: Kota KinabaluSabah, MALAYSIA
RE: SPE 40cc
ORIGINAL: pianori
I figured you guys would want to see this one. It is my Extra 300, at 15 lbs, with an SPE 40 modified. It has lots of power, you can see it at :[link]http://www.youtube.com/watch?v=Q5p5WOvCHBk[/link]
I figured you guys would want to see this one. It is my Extra 300, at 15 lbs, with an SPE 40 modified. It has lots of power, you can see it at :[link]http://www.youtube.com/watch?v=Q5p5WOvCHBk[/link]
09-07-2007 | 10:37 AM
#115
Senior Member
My Feedback: (2)
RE: SPE 40cc
This is what was done to the engine:
Increased compression (copper gasket), walbro carburetor, enlarged intake, modified muffler, changed spark plug & gaped right, balanced crank shaft, changed ignition. Prop run is a MA scimitar 20 X 8
Increased compression (copper gasket), walbro carburetor, enlarged intake, modified muffler, changed spark plug & gaped right, balanced crank shaft, changed ignition. Prop run is a MA scimitar 20 X 8
09-07-2007 | 11:34 AM
#116
My Feedback: (2)
RE: SPE 40cc
ORIGINAL: RoysterDW
Hi Dave
Great to hear from you!! Zac still loves his Komet and the P47 is flying again. Was going to the electric fly in at Coolum this week end but its been canceled as the field is under water!
haven't fired it up yet as I am still building the Extra 260. There is a thread on this site on the build of the 260 with mentions to the SPE:
http://www.rcuniverse.com/forum/m_56...tm.htm#6308362
I bought a JXF 20x10 prop for it from PA and just need to buy a 3" spinner. Bought a 18x10 Zinger but was told to use it for stirring paint![&o]
I did buy a velocity stack for it as well.
Be interested to see how you go with the engine.
What are you mounting it in?
Hi Dave
Great to hear from you!! Zac still loves his Komet and the P47 is flying again. Was going to the electric fly in at Coolum this week end but its been canceled as the field is under water!
haven't fired it up yet as I am still building the Extra 260. There is a thread on this site on the build of the 260 with mentions to the SPE:
http://www.rcuniverse.com/forum/m_56...tm.htm#6308362
I bought a JXF 20x10 prop for it from PA and just need to buy a 3" spinner. Bought a 18x10 Zinger but was told to use it for stirring paint![&o]
I did buy a velocity stack for it as well.
Be interested to see how you go with the engine.
What are you mounting it in?
I'm thinking of getting the "rear dump pitts muffler" from BCMA but they are out of stock according to the web page...
Mine is going into this:
http://www.rcuniverse.com/forum/m_5869761/tm.htm
It's a pretty full on kit bash....
Thanks
Dave
09-07-2007 | 12:30 PM
#117
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From: Palm Harbor, FL
RE: SPE 40cc
here is a velocith stack I made so it could be installed AFTER the cowling was installed. they come in various sizes with screw threads. they are usually free. you can paint to match like I did for my gold colored cowling
09-08-2007 | 05:02 AM
#118
RE: SPE 40cc
I bought my velocity stack from Tower Hobbies for about 7.99 US ( I think) made by Great Planes.
I dont have a servo on the choke which I dont think is needed. Besides with the 40cc you dont want go adding weight to the nose as it is.
The GP velocity stack polishes up real nice [8D]
I dont have a servo on the choke which I dont think is needed. Besides with the 40cc you dont want go adding weight to the nose as it is.
The GP velocity stack polishes up real nice [8D]
09-09-2007 | 10:48 PM
#119
RE: SPE 40cc
Can someone walk me through the fuel and 2 stroke oil mixing? I don't quite understand the ratios [&:]
I gather I'll need some kind of measuring cup/bottle.
I have bought a 5lt fuel can and some Motul 880T oil, how many mil per litre of fuel do I mix?
I gather I'll need some kind of measuring cup/bottle.
I have bought a 5lt fuel can and some Motul 880T oil, how many mil per litre of fuel do I mix?
09-10-2007 | 08:18 AM
#121
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From: Palm Harbor, FL
RE: SPE 40cc
first you determine the mixture. for break in you want 32 to 1. 1 litre is 33.8 us ounces. in that case I would put .114 litre to each litre of gasoline. so in your 5 litre can you would put .568 litre of oil. in the us we put 4 oz in a gallon
09-10-2007 | 03:29 PM
#122
RE: SPE 40cc
This is what I was told:
30:1 = 166ml to 5lt
40:1 = 125ml to 5lt
50:1 = 100ml to 5lt
Also was told that I should run mineral oil for the first 5lt of fuel to run-in the engine??
I asked PeakModel and they said to run the synthetic would be fine.
30:1 = 166ml to 5lt
40:1 = 125ml to 5lt
50:1 = 100ml to 5lt
Also was told that I should run mineral oil for the first 5lt of fuel to run-in the engine??
I asked PeakModel and they said to run the synthetic would be fine.
09-10-2007 | 05:03 PM
#123
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From: Palm Harbor, FL
RE: SPE 40cc
I have a little cup that says 30ml equals 1 oz. there for I would put 120ml in a us gallon for 32 to 1. there are 128oz in a gal and that is 4.55 litres so 132ml would be 32 to 1 for break in or even 140 for the first 5 litre can. the US importer specifies chain saw oil. 166 seems rich but better than lean
09-10-2007 | 05:36 PM
#124
RE: SPE 40cc
Thanks Phil
I guess I should go out and buy a measuring cup/bottle. The mineral oil idea came from someone who owns Desert Aircraft engines and he does that with every engine.
I gather it wouldnt hurt to run the mineral oil first up and its fairly cheap so, why not.
Monkey see, monkey do
I guess I should go out and buy a measuring cup/bottle. The mineral oil idea came from someone who owns Desert Aircraft engines and he does that with every engine.
I gather it wouldnt hurt to run the mineral oil first up and its fairly cheap so, why not.
Monkey see, monkey do
09-11-2007 | 02:10 AM
#125
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From: Kota KinabaluSabah, MALAYSIA
RE: SPE 40cc
I dont spend a cent on this measuring apparatus as I am using an used cough drop plastic bottle from the clinic, that has gradations in the 10 ml interval. It measures 100 ml when full. Very handy indeed.
