RAM setup questions
07-15-2002, 02:21 AM
#1
Thread Starter
My Feedback: (10)
Join Date: Feb 2002
Location: Elizabeth City,
NC
Posts: 387
Likes: 0
Received 0 Likes
on
0 Posts
RAM setup questions
Just getting everything together for my 750 air start. Has 0 time on it. First turbine for me.
1. For bench runs, can I just use one tank without a UAT? Maybe something like a soda bottle?
2. For the oil tank that the manual says to setup, do I need this if I am mixing oil with the fuel. If I dont need it, what do I do with the line going to the turbine?
3. Fuel... can I use JP8 without reprogramming the ECU?
4. Oil... can I use Mobil Jet 254? Its a turbine oil that we use on our helos.
5. Maybe I missed this one in the manul, but what type and size battery would you guys reccommend for the ECU?
Thanks for any help.... cant wait to wake up the neighbors!!!!!
1. For bench runs, can I just use one tank without a UAT? Maybe something like a soda bottle?
2. For the oil tank that the manual says to setup, do I need this if I am mixing oil with the fuel. If I dont need it, what do I do with the line going to the turbine?
3. Fuel... can I use JP8 without reprogramming the ECU?
4. Oil... can I use Mobil Jet 254? Its a turbine oil that we use on our helos.
5. Maybe I missed this one in the manul, but what type and size battery would you guys reccommend for the ECU?
Thanks for any help.... cant wait to wake up the neighbors!!!!!
07-15-2002, 02:37 AM
#2
My Feedback: (1)
Ram 750
You need to find out for sure if yours is one that is fitted for separate fuel and oil or designed for mixed fuel!
They are not interchangable. If it is separate then hook oil to oil tank and fuel to fuel tank. Be sure that you are filtering your fuel multiple times. On the mixed version you should tee the oil and fuel lines together behind the engine cover.
I have only run Jet-A. I have run both the separate system for fuel and oil and mixed, I actually preferred seperate one best.
One tank is fine for bench test.
As far as battery size 1400 is a good size. But if you need the weight for balance...Use larger capacity.
They are not interchangable. If it is separate then hook oil to oil tank and fuel to fuel tank. Be sure that you are filtering your fuel multiple times. On the mixed version you should tee the oil and fuel lines together behind the engine cover.
I have only run Jet-A. I have run both the separate system for fuel and oil and mixed, I actually preferred seperate one best.
One tank is fine for bench test.
As far as battery size 1400 is a good size. But if you need the weight for balance...Use larger capacity.
07-15-2002, 02:50 AM
#4
My Feedback: (1)
RAM setup questions
Other then if the Turbine is an F model is all I remember as I am currently only flying AMT engines. I don't think by looking at the outside you can tell. You may have to send in to Ram to know for sure, as I believe it would have to viewed from the inside to tell.
07-15-2002, 03:49 AM
#6
My Feedback: (6)
RAM setup questions
Paper, take off the spun aluminum cap on the front of the turbine. There should be three screws, 120 degrees aprt, holding it on. You will see where the air, propane, oil, & fuel lines enter the engine through Festo fittings. If there is only three lines entering (air, propane & fuel) then you have an "F" model and you need to mix 1 quart of turbine oil with 5 gallons of kero. You will see that the fuel line actually "tees off" with a Festo "tee" and goes into two separate Festo fittings. One is the path that fuel takes, and the other is lubrication to the bearings. If you have an older engine that requires separate oil, then there will be 4 lines running in. Hope this helps. Also try going to the turbine help forum. Albert from RAM is there, but I think he said that he will be travelling this week or something and may not be available for a while.
PS. use anything clean that kero will not dissolve for a test stand tank. I once had to use a mayonaise jar!!!
PS. use anything clean that kero will not dissolve for a test stand tank. I once had to use a mayonaise jar!!!
07-15-2002, 03:53 AM
#7
My Feedback: (6)
RAM setup questions
No NO NO! If it is an "F" model (as in RAM 750F), the "F" means that it has the fuel mod meaning that you MUST mix 1 quart of turbine oil with 5 gallons of kerosene. DO NOT ATTEMPT TO USE THE SEPARATE OIL TANK!!!!! As for the oil you wanted to use, you need to ask Albert. Exxon 2380 is always good for most turbines.
07-15-2002, 04:03 AM
#8
Thread Starter
My Feedback: (10)
Join Date: Feb 2002
Location: Elizabeth City,
NC
Posts: 387
Likes: 0
Received 0 Likes
on
0 Posts
RAM setup questions
Did RAM forget to take this part out of their manual? As for the line going to the turbine, what do I do with it? How can I plug it off, or do I need to?
07-15-2002, 04:18 AM
#10
My Feedback: (6)
RAM setup questions
Oops, you are correct. I forgot about CP (compressor pressure), the feedback to the ECU. You should have five connections on the very front of the engine, under the cap, but only four lines going in (because the fule "Tees" off) on an "F" version. See if you have the "Tee". If so, its an "F" model and you absolutely MUST mix oil into the fuel.
07-15-2002, 04:23 AM
#11
My Feedback: (6)
Join Date: May 2002
Location: Miramar, FL
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
RAM setup questions
Hello Paperairplane; If you have a 750 with out the F then you need to run the separate oil tank. Look at the engine from the front with the plug at the 12 o'clock position. The fitting to the right of the plug is the fuel. The one to the left of the plug is the oil and should go to the oil tank. If the fuel and oil fittings are teed together then it is a 750F and the F would be engraved on the serial # under the front cover. The next line to the left of the oil is the compressor bleed air line. this line goes to the pressure fitting on the ECU and MUST BE TEED OFF TO THE OIL TANK. this is how you pump the oil into the bearings. If you don't pressurize the oil tank you will dis-troy the engine on the first run. The last two lines are the start air and propane. Good luck (Albert from RAM)
