A Ram750 Plus Air Start with 18 volt blower?
#26
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RE: A Ram750 Plus Air Start with 18 volt blower?
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I think for an external engine setup like the hotspot or kangaroo jets it would be OK to use a blower. But for an internal engine setup. the blower would have to be too close to the compressor to be effective and god forbid the compressor stop turning during startup the fuel pump will still pumps fuel to the stall burning engine. Its very dangerous.
I think for an external engine setup like the hotspot or kangaroo jets it would be OK to use a blower. But for an internal engine setup. the blower would have to be too close to the compressor to be effective and god forbid the compressor stop turning during startup the fuel pump will still pumps fuel to the stall burning engine. Its very dangerous.
I have seen and started AMT's with blowers dozens of times and it works quite well, is easy if you know how to start the turbine in the first place, and does NOT produce wet starts on any that I have seen or done. The only two variables are will the blower spin the turbine to a high enough RPM, and will the propane delivery system being used keep the propane mixture rich enough to stay lit until the kero starts (if it can't, the propane will simply blow out because of the somewhat higher airflow and the start sequence just halts - no excess (or any) kero in the engine).
I agree with the others that the most straight-forward way to start the turbine is with an external air source, especially for someone new to turbines, but I'd bet that someone familiar with starting an air start turbine could start a RAM with a blower quite easily.
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RE: A Ram750 Plus Air Start with 18 volt blower?
Sorry, but this is spoken like a man who doesn't know what he's talking about. You should perhaps stick to talking about what you know about - whatever that may be. The ECU WILL NOT pump fuel into the engine unless the RPM is high enough to start AND the EGT indicates that the propane is still burning. If EITHER of these measurments go below limits, the ECU shuts off the fuel pump, and as Tom mentioned above, if you're using a blower, and you get a wet start (which is not any more likely than starting with air) it will simply blow the flames out the tailpipe until the small bit of fuel that was spilt is consumed.
You should perhaps stick to talking about what you know about - whatever that may be
Steve you are doing the right thing getting your scuba tank.
#28
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RE: A Ram750 Plus Air Start with 18 volt blower?
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We all knows what a ECU suppose to do. But thats not the case some time with the Electrodynamics ECU. Starting a turbine by blowing air into the inlet of a jet is not the same as blowing it directly in front the engine itself.
We all knows what a ECU suppose to do. But thats not the case some time with the Electrodynamics ECU. Starting a turbine by blowing air into the inlet of a jet is not the same as blowing it directly in front the engine itself.
I know what i'm taking about do you???
Steve you are doing the right thing getting your scuba tank.
Steve you are doing the right thing getting your scuba tank.
#29
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RE: A Ram750 Plus Air Start with 18 volt blower?
Why don't you show us what you '"knows" by 'splaning us to the difference? The ECU has NO IDEA how the turbine is being spun, only what RPM it is turning and what the EGT is. If both are within limits - which can be easily done with a proper blower - the engine will start fine.
If i'm correct Steve is using the C/P pressure controlled ECU. I ("knows") this because I was once a proud owner of a AIR START RAM 1000 and 750 engine. This does not happen all the time but every so often during a fail start, the fuel pump will still continue to pump fuel into the hot engine before timing out. Unplug the ecu battery pack and you will be OK. I used everything possible to start my engine (keyboard duster, shop vacuum, home vacuum cleaner, "been there, done that" before getting the airtank. The problem with using low air pressure to start a engine is after ignition the engine RPM sometimes slows because of high temperature (NOT ENOUGH RPM TO COOL ENGINE DURING STARTUP). This causes the engine's RPM to slow down because of excessive heat on the BEARING causing the engine to stop turning.
Before the fuel pump time out, your jet is on fire.
#30
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RE: A Ram750 Plus Air Start with 18 volt blower?
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[snip]
I used everything possible to start my engine (keyboard duster, shop vacuum, home vacuum cleaner, "been there, done that" before getting the airtank. The problem with using low air pressure to start a engine is after ignition the engine RPM sometimes slows because of high temperature (NOT ENOUGH RPM TO COOL ENGINE DURING STARTUP). This causes the engine's RPM to slow down because of excessive heat on the BEARING causing the engine to stop turning.
Before the fuel pump time out, your jet is on fire.
[snip]
I used everything possible to start my engine (keyboard duster, shop vacuum, home vacuum cleaner, "been there, done that" before getting the airtank. The problem with using low air pressure to start a engine is after ignition the engine RPM sometimes slows because of high temperature (NOT ENOUGH RPM TO COOL ENGINE DURING STARTUP). This causes the engine's RPM to slow down because of excessive heat on the BEARING causing the engine to stop turning.
Before the fuel pump time out, your jet is on fire.
Bob
#31
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RE: A Ram750 Plus Air Start with 18 volt blower?
Steve,
Just send the RAM to me and get proper auto-start. Stop causing trouble.
BTW, I will pay for shipping,[sm=lol.gif]
Mark M.
Just send the RAM to me and get proper auto-start. Stop causing trouble.
BTW, I will pay for shipping,[sm=lol.gif]
Mark M.
#32
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RE: A Ram750 Plus Air Start with 18 volt blower?
Mark
LOL Good one man!! I love Christmas & I am totally in the holiday spirit but I'm not feeling quite that generous !! Never hurts to ask tho huh? LOL
I got my Pony Scuba tanks today so I 'll be all set for the maiden after the holidays,wish me luck [8D]
Merry Xmas guys!!!
Steve
LOL Good one man!! I love Christmas & I am totally in the holiday spirit but I'm not feeling quite that generous !! Never hurts to ask tho huh? LOL
I got my Pony Scuba tanks today so I 'll be all set for the maiden after the holidays,wish me luck [8D]
Merry Xmas guys!!!
Steve