SJN

Thats neat [sm=thumbs_up.gif]

What do you think of the fuel consumption ?
Is it a fuel guzzler ?

SJN

In a German forum, I found a guy that has the large GeeBee Y and ASP 400 installed.
He uses a 22/10 prop on 10% nitro, and says it is an absolute must to have an onboard glow. He uses a single 7000mi amp batt, and also a servo operated switch for it.
His plane weighs 10,5kg, and balanced perfectly without any deadweight.


Flys and sounds fantastic he says.........just what I want to hear

Kmot

My Feedback: (24)

I can't be sure yet. The first time I ran it, I had the HS needle leaned for normal power, but I was running it at only 4000 rpm on a small prop. At that first run, it consumed 15 ml per minute. Which is amazing economy. The second run, I enrichened the HS needle quite a lot so that it would be using excess fuel and hence excess oil. At that point it went to 59 ml per minute. The third run, I leaned the HS needle slightly, and the fuel consumption dropped back to 21 ml per minute.

All indications so far are that it will not really be a fuel hog. But we can't be sure until it is actually flying a 20-30 pound aircraft!

gdutruy

Hi Guys,

If you want a good heating system for all types of multicylinder engines, you may buy a microsens one. You find this under : www.microsens.at . Unfortuately it's in Austria, but it's really a good system to heat the plug. The one for your radial would be the GLOW5LP. I have myself two of these, one for a five cylinder and one for a seven cylinder, they give me totally satisfaction. You'll find a complete description of how it work's on their website.

Gilles

onecuwldood

My Feedback: (1)

The Saito 325 radial is a 52cc engine so the ASP/Magnum 400 radial would be 65cc. And I've always heard a glow engine has more power than a gasser of the same displacement.
So my guess would be that the 27% Gee Bee Y would be a great match for the ASP 400
I'm in love with the sounds of the radials as well, just don't have the funds to go for it yet. I did want to share a link so you guys could hear some of the big 215cc gas radials
http://www.airworld-usa.com/videopage.htm Check out the Gee Bee R3 and the Sukhoi videos.


Math note for the day...
For converting cc's to cubic inches, the formula is:
:: cc ÷ 16.387 = cubic inches
The formula for converting cubic inches to cc is:
:: cubic inches x 16.387 = cc
As quoted from http://94octane.com/articles/formulas.htm

Kmot

My Feedback: (24)

Can you explain how this is wired to five cylinders? From the photo, I do not see five equal glow plug leads.

gdutruy

Yes, i can explain how it's connected

You have two yellow wires. one is connected to 3 plugs, and the other one to 2 plugs and a compensation resistor. On the electronic side, i'cannot explain how it works.

I fly with this connection and it goes perfectly.

You can read the manuel and find a plan of the connection under: http://www.microsens.at/modellfluge/index.htm select the GLOW5LP in the left frame and you find the same manuel as you get when you buy the device. It explains everything on how to set up the device.

If you have any other questions, I'll be happy to answer.


Gilles

Kmot

My Feedback: (24)

Gilles, thank you. That explains it nicely.

-Tom

PlaneKrazee

My Feedback: (14)

Kmot,

Congrats on the very cool engine!

Sandman Norway

Hi there..

I`m in the process of building a Sist FW-190A8, 1:5 scale.. I have been playing with the idea of using a
radial engine for this bird. I have dry-fitted the OS Sirus engine, and it fits nice under the cowl.
But, the Magnum has aprox 15ccm more volume, and should be a tad stronger than the OS. + Its a lot cheaper :-)

Could any of you, that has this Magnum/ASP engine plase give me the dimesions on max outer diameter, and distance
from firewall to prop mounting flange. It`s impossible to find a drawning of this engine with dimension :-)

Tanks for your help, and greetings from Norway..

Sandman

SJN

Here are the all the dimensions in mm.

http://www.produktinfo.conrad.com/da...SP_FS400AR.pdf

NM2K

My Feedback: (14)

I'm going to ask some stupid questions, so please don't be offended.

What brand is it?

*** My eyes just came into focus close up for long enough to read that it is a Microsens.

Didn't it come with instructions?

*** Don't you love it when the manufacturer assumes that you know their product as well as they do? Musta been an engineer that packaged that product.


Ed Cregger

gdutruy

Instructions are on their website: www.microsens.at

Gilles

Sandman Norway

Thanks for the link for the dimesions. BUT, I cant tell if the lenght of the engine is with or without the mounting flange.
Meaning the piece that is bolted to the firewall.. Could any of you that actuallay have this engine, please be bothered to measure the
lenght from firewall to propdriver..

Would it be possible to hanstart a radial like this..? My FW190 has a spinner that wont survive a hit from the starter :-(

Thanks

Regards

Sandman

SJN

Sandman, it is 159 mm


I have not started mine yet [&:]
So i dont know if it will handstart......or if my electric starter is powerfull enough

gdutruy

It's a radial, it will handstart without any problem and better than a single cylinder engine !

Gilles

Sandman Norway

Thanks for fast reply :-) My only consern by handstarting, would it not accelerate faster from dead start..? Shure would like to get my hand out of the prop-arc fast enogh :-)

I guess I `ll order one... I do have som conserns about this engine in a 27-30lb Warbird. But if it proves reliable with onboard
glow system, it would be great. Nice radial sound on a VERY nice model..

Thanks again..

Sandman

gdutruy

Your welcome,

Nothing to fear, i've four radials and there is no other engine easier to start, as long as you heat the plugs the proper way...

Gilles

Sandman Norway

Hi..

As there was difficult to find info on how well/or bad a Radial engine would work out on a 26-28lb warbird,
I have ordered a ASP -400 65ccm Radial. I guess the only way to find this out, is by trying it out for myself.
As usual on forums like this, there is different opinions. I have been told that this wil work out just fine, and some has said it
is a shure road for disaster... So there is only one way of finding it out, and that is to test it for my self.
I know that this engine is not going to make my FW-190 a speed demon, but that was never my intension. I want something
different from all the other gas engine warbirds. I have a fasination for mechanics (and WWII WB), so I will easy sacrifice
performence for the beuty of mechanical part swinging i harmony :-) Yes, I fly helis too :-)

I`ll do some serious ground testing of this engine. Testing different props and fuel to optimize reliability and performence.
I wil post my results here when I have some data to show.
And if the engine prove to not be unusable in the FW-190, I shure would like to put in the nose of Gee Bee Y :-)

Thaks for listening in..

Beste regards..
Sandman

Kmot

My Feedback: (24)

Really looking forward to your info Sandman!

Kmot

My Feedback: (24)

Sonny, I just pulled my engine apart. I wanted to do an inspection after hearing about some troubles, including this one you posted a year ago. I found one link pin broken, and it would have led to the same disaster as this fellow had. []

First two photos are the ones you posted. Last photo is my engine.

SJN

Hi Tom.

its broken ?
ouch, can you take a picture of the broken pin when it has been taken out please ?
How many minutes has your engine run ?

Kmot

My Feedback: (24)

62 minutes total time so far.

SJN

Sorry for your misfortune, and thanks for the warning.
Ill be chicking mine frequently.

I cant see the damage on yours, but is it the pin at 12 o`clock in your picture that is broken ?
It looks like the only one with wear marks from the C-clip around it.

Kmot

My Feedback: (24)

Yes, 12 o'clock position. It appears to have a "V" shape at the bottom of the link pin. That is where two pieces of the flange broke off.