HI all, has anyone tried a different turbine fuel pump for there Ram 500, if so, what pump did you use.
Rcpete

Have not yet tried any but my original RAM 500 pump. I would try Carlos at RTI for a replacement pump if necessary. However, I do fly my RAM 500 with its original pump, doing manual starts using an Eco FADEC, Hall sensor & thermocouple from Wren, with a 5 cell 1100 ma NiMH pack for the pump. If/when my original pump goes, I would ask Wren and suspect they could recommend one of the fuel pumps they use with the same FADEC for the MW-54. Not sure their pumps would work with the RAM ECU. Bob Price might know.

Hi Pete,
I recently ordered a replacement fuel pump for my Ram 500 from Modellbau USA. What they sent me is a Hausl ZP28028. The pump seems to work fine on my test stand. I noticed that it did not have an EMI filter attached to the back of the motor so I am afraid to fly it in my plane fearing radio interference problems. Hausl sells their pumps with and without EMI filters. The correct one would be a ZP28028F. I called Alberto at Modellbau USA and he tells me that the EMI filter is not needed, and that he has been flying his for several years without one.

Personally I think it would be foolish not to have one since most of the EMI is generated by that motor, my old RAM pump has an EMI filter attached and so does all of the competetion that I am aware of, and any electric flier motors come with EMI filters or capacitors on the motors. So I bought and installed one on my new pump and am now ready to put it in my plane.

You can get the pump from several sources;
http://www.modelltechnik.at/eindex.htm
http://www.modellbau-usa.com/catalog...sort=2a&page=3
http://www.nades.net/products.htm
http://www.wrenturbines.co.uk/accessories.php#cat3

Joe

Ltaway,
From Wren's website (link above) the ZF28028F pump appears to be what Wren uses.

Joe

So, I'm thinking you might want to evaluate the [link=http://shopping.netsuite.com/s.nl/c.ACCT103531/sc.2/.f]Flight Works[/link] pumps. Their drive voltage reqts should fall within the output control voltage range of most ECUs . . . My 2¢ worth. [sm=sunsmiley.gif]

Mike

I called Flight Works about 6 months ago looking for a fuel pump for the RAM 500. They told me they did not make one at that time for the RAM 500 but were working on one that would work. I haven't checked back to see if it is available now or not. I believe they told me that the RAM 500 pump was a lower voltage pump.

OK, question Guys...

I got a replacement pump for my Ram 500 (FTE T-500, if it makes a difference). My pump is the Haüsl ZP30020S...is this going to be a problem, since it's not the ZP28028 listed above. Haven't tried starting it yet, still working on the plane.

Thanks, Mark

Mark,
I suggest that you call either Carlos at RTI or Bob Price to see if that pump will work OK.
The ZP28028 is for turbines up to 80N and it puts out 300 ml/min.
The ZP30020S is for turbines up to 170N and it puts out 650 ml/min.

It looks like the ZP30020S puts out twice what is needed. The ECU may be capable of adjusting to run it at a lower duty cycle. Also if you read my post above you should get one with an EMI filter, or add one to the pump you have. The specs are on Hausl's web site
http://www.modelltechnik.at/eindex.htm

Joe