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RAM500, different pump, help.
Hi guys,
Had a great flying day with my RAM500 last week but then some problems began sneaking up on me, had 7 full flights of approximately 5-6 minutes each when on the 7th flight i had a flame out, did manage to bring her home safe but when trying to start the turbine on the ground it would puff at mid range and flame out again. thought it was a clogged needle, i took the turbine apart and cleaned the manifold with carb clean spray and some high pressure solvents. all needles were fine and the turbine was re assembled. when starting it up again, it would do the same as before, just puffing as coughing at mid range. we (I3DM - Lior and I) replaced the pump to the flightworks 200b fuel pump and the turbine started fine and went all the way up to max RPM - 150K there was a problem of a very hot start and i had to decrease the the START PW from 88 to 55 in order for the turbine to start smoother. now, when throwing the throttle from idle to full, the turbine would spit flames and the EGT gets very high, a pure indication of too much fuel delivered to the turbine. when advancing the throttle stick slowly, no problem there. the original pump had max PW of approximately 580 and the flightworks pump have a max PW of approx. 380 what should i do in order to avoid this problem? there is no option to change the ramp time on the ECU's parameters. thanks for the help. Ravivos. |
RE: RAM500, different pump, help.
Ravivos:
When you re-installed the fuel ring, did you check that the needles all had the same angle and were in the same position on the vaporizer tubes? if your needles are definitely free of clogging, it could very well be needle alignment, fuel has to shoot out the needles against the vaporizer tube wall, not straight into the tubes... |
RE: RAM500, different pump, help.
Hi Ruizmilton
yes, i assembled the needles exactly as they were, in the correct angle. they are all at approximately 45 degrees and each one of the needles is placed inside a tube pointing to its wall. |
RE: RAM500, different pump, help.
Hi Ravivos!
I hope you can solve the problem soon, And be present at The jet meeting this weekend. |
RE: RAM500, different pump, help.
As you had to reduce the start PW I think it's safe to say the Flightworks is delivering more fuel than the old RAM one was. If you have everything right inside (which it sounds like you have) then as you say the Acceleration needs reducing. There must be a way of adjusting that although it might not be a setting the user can access. If you can't sort it then changing the ECU to a Gaspar Fadec would work well.
Jason |
RE: RAM500, different pump, help.
Amir - sure trying to solve the problem as fast as i can, really dont want to miss our desert jet meet.
Jason - i know i can program Gaspar's FADEC for the turbine to work flawlessly but there are two things that holding me back on it - time and money :) The RAM's ECU is great and i know that the ramping parameter can be changed using some kind of special super-duper secret menu hidden inside it, just need to know how to access it. Thanks. |
RE: RAM500, different pump, help.
What version ECU do you have? Second you could program a throttle curve in your radio. Then again you could be having an internal fuel leak. Take the casing off and look between the fuel connector and lube connector while pumping fuel into the fuel line. If there is no leak press 1-2 then 3 and back to 2 then go to # 23 and reduce than # or call Carlos or Bob price :)
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RE: RAM500, different pump, help.
ORIGINAL: basimpsn What version ECU do you have? Second you could program a throttle curve in your radio. Then again you could be having an internal fuel leak. Take the casing off and look between the fuel connector and lube connector while pumping fuel into the fuel line. If there is no leak press 1-2 then 3 and back to 2 then go to # 23 and reduce than # or call Carlos or Bob price :) |
RE: RAM500, different pump, help.
Hi basimpsn,
i have the CO3 version. i manage to hack my way into the CO3 factory settings and changed the relevant parameter (110) and now the turbine works perfectly. thanks. Ravivos. |
RE: RAM500, different pump, help.
ORIGINAL: RCISFUN ORIGINAL: basimpsn What version ECU do you have? Second you could program a throttle curve in your radio. Then again you could be having an internal fuel leak. Take the casing off and look between the fuel connector and lube connector while pumping fuel into the fuel line. If there is no leak press 1-2 then 3 and back to 2 then go to # 23 and reduce than # or call Carlos or Bob price :) Hi basimpsn, i have the CO3 version. i manage to hack my way into the CO3 factory settings and changed the relevant parameter (110) and now the turbine works perfectly. thanks. Ravivos. |
RE: RAM500, different pump, help.
All is well in the RAM world again....;)
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RE: RAM500, different pump, help.
ORIGINAL: basimpsn ORIGINAL: RCISFUN ORIGINAL: basimpsn What version ECU do you have? Second you could program a throttle curve in your radio. Then again you could be having an internal fuel leak. Take the casing off and look between the fuel connector and lube connector while pumping fuel into the fuel line. If there is no leak press 1-2 then 3 and back to 2 then go to # 23 and reduce than # or call Carlos or Bob price :) Hi basimpsn, i have the CO3 version. i manage to hack my way into the CO3 factory settings and changed the relevant parameter (110) and now the turbine works perfectly. thanks. Ravivos. thanks |
RE: RAM500, different pump, help.
Isn't it amazing how some of these old ones keep going. I have R500 #138 with something well above 1000 cycles now. Running it with an Eco FADEC and doing manual starts: just finally replaced the original fuel pump.
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RE: RAM500, different pump, help.
Ravivos' RAM 500 runs like a champ now - actually much better than it ever did now spinning @ 155K !!
Ravivos - tell these guys how she runs.. :D |
RE: RAM500, different pump, help.
1 Attachment(s)
ORIGINAL: i3dm Ravivos' RAM 500 runs like a champ now - actually much better than it ever did now spinning @ 155K !! Ravivos - tell these guys how she runs.. :D |
RE: RAM500, different pump, help.
Hahaha... good one Amir !
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RE: RAM500, different pump, help.
well, after lots of fiddling with the turbine, cleaning the clogged needles, replacing the pump, changing the mid ramp time ... now she runs great.
took her out to our desert jet meet over Ein-Yahav (Israel), burnt approximately 22 liters of fuel over a total of 16 flights. except of one burnt glow plug, she performed outstanding!. even had a chance racing a fellow jet pilot with the same plane as mine (Converted Falcon120) with a P-60 as a burner... it was pure fun to fly with him and the RAM doesnt fall back from the P-60 at all. during high speed low passes , during vertical climbs - both planes were on the dime. thank you Lior for the time spent helping me bringing her up to par. Magnificent. Ravivos. |
RE: RAM500, different pump, help.
My pleasure my friend - any time. it was a wonderful expirience.
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RE: RAM500, different pump, help.
I am looking for some parts for a RAM 500 and got the impression you might be able to help me. If so please PM me.
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RE: RAM500, different pump, help.
For RAM 500 parts i would contact Carlos at: www.rtiturbines.com
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RE: RAM500, different pump, help.
Hi Sidgates.
Sorry if you got the wrong impression but i only have access to the parts that are bolted on my RAM500 [8D]. As I3DM wrote, if you need any parts you can contact Carlos at RTI, he sure is a stand-up guy and you will probably get whatever you are looking for from him. I can only offer ideas and thoughts based on my experience with my RAMs. Ravivos. |
RE: RAM500, different pump, help.
i am also in the happy world of RAM500:D
all of my 3!!! running with 160k and performing perfect. F86-Liebetrau Me163-DW L39-Schreiner-Savex Uwe |
RE: RAM500, different pump, help.
My parts inquiry was mainly to "basimpsn". I am looking for used nose cover, starter housing and standoffs for the RAM 500 to convert old style starter to new style. I have the new bendix and starter motor all ready.
Thanks for the replies. |
RE: RAM500, different pump, help.
ORIGINAL: sidgates My parts inquiry was mainly to ''basimpsn''. I am looking for used nose cover, starter housing and standoffs for the RAM 500 to convert old style starter to new style. I have the new bendix and starter motor all ready. Thanks for the replies. i.e. - the old lock have a different shape - more of a flathead shape. comparing to the new one which is significantly pointier. i have both new and old starters on two different RAMs and they are not interchangeable. |
RE: RAM500, different pump, help.
ORIGINAL: Ravivos ORIGINAL: sidgates My parts inquiry was mainly to ''basimpsn''. I am looking for used nose cover, starter housing and standoffs for the RAM 500 to convert old style starter to new style. I have the new bendix and starter motor all ready. Thanks for the replies. i.e. - the old lock have a different shape - more of a flathead shape. comparing to the new one which is significantly pointier. i have both new and old starters on two different RAMs and they are not interchangeable. |
RE: RAM500, different pump, help.
Hi Guys, I am new to this turbine thing not new to rc just turbines here's my thing; i have a Ram 1000 that runs great, i picked up a Ram 500 from a friend well after replacing the pump and set out my ECU to Bob Price i got his latest ECU for the Ram 500 after putting eveything back in my plane and fired it up i noticed FLAMES out the back after ramping i throttle up to full throttle and puff a cloud of smoke,i started it up again and advanced the throttle slower to about half eveything seems OK i am afraid to go to full power, my question is i do not think the flames are normal what should i do??[:o]
Thanks Pat Lasercut USA |
RE: RAM500, different pump, help.
1 Attachment(s)
I have the new nut for the larger bendix. I built a hand held wand starter (see pictures My wand starter worked on the bench at home for several starts. My goal was to reduce the airborne weight as much as possible by using the wand starter and off board propane tank.
The original shroud around the bendix is a very loose fit and that is the way I made my first wand. The problem comes when you forget to have the wand starter on the engine, you shut the engine down and it starts through the cool down phase with out the wand starter on the engine. Because of the loose fit and the mass of the large bendix it tends to whip and can even bend the motor shaft. This week I built a new shroud around the motor with a very tight fit. Now the problem is I haven't been able to get a good enough alignment of the bendix in my wand starter and it binds when it extends to turn the compressor on start up. I finally decided to accept the weight penalty of the on board starter but I need the new nose cone, the starter housing and the mounting standoffs the fit the large bendix and the matching nut. I thought some one might have the parts I need from a scrapped engine. New parts to do the conversion back to on board start are very expensive. I have started the engine just hand holding the starter motor with the bendix installed but I don't feel comfortable with my hand that close to the engine when it lights the propane. See pictures below. The fod screen is hinged and flips down in place after the engine starts. |
RE: RAM500, different pump, help.
ORIGINAL: sidgates I have the new nut for the larger bendix. I built a hand held wand starter (see pictures My wand starter worked on the bench at home for several starts. My goal was to reduce the airborne weight as much as possible by using the wand starter and off board propane tank. The original shroud around the bendix is a very loose fit and that is the way I made my first wand. The problem comes when you forget to have the wand starter on the engine, you shut the engine down and it starts through the cool down phase with out the wand starter on the engine. Because of the loose fit and the mass of the large bendix it tends to whip and can even bend the motor shaft. This week I built a new shroud around the motor with a very tight fit. Now the problem is I haven't been able to get a good enough alignment of the bendix in my wand starter and it binds when it extends to turn the compressor on start up. I finally decided to accept the weight penalty of the on board starter but I need the new nose cone, the starter housing and the mounting standoffs the fit the large bendix and the matching nut. I thought some one might have the parts I need from a scrapped engine. New parts to do the conversion back to on board start are very expensive. I have started the engine just hand holding the starter motor with the bendix installed but I don't feel comfortable with my hand that close to the engine when it lights the propane. See pictures below. The fod screen is hinged and flips down in place after the engine starts. |
RE: RAM500, different pump, help.
would any one have the old style starter motor and housing willing to sell if anyone does could you please shoot me a pm , thanks
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RE: RAM500, different pump, help.
Anyone have a combustion chamber and fuel rail for a 500?
Thanks Frank |
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