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wcurtis(at)core.com
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 Posted: Tue Oct 03, 2006 3:58 pm Post subject: MVP-50 Fuel Flow Transducer |
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The EI FT-60 Fuel Flow Transducer, while a different form factor than the FloScan, is electrically compatible with the FloScan. EI went with their own design to reduce cost and because they thought they could improve it. One of the improvement was a "straight thru" flow design. In the FloScan, supposedly the fuel has to do a 90 degree turn to exit. As to them not wanted it mounted "rigid", I'm not sure what the logic is here. Both units have an internal impeller and would be equally susceptible to any vibration. In my Cardinal I've have the EI Fuel Flow instrument with the original FloScan transducer mounted rigidly to the firewall, though the lines to it are flexible. It is mounted just after the main fuel line outlet from the firewall, before the mechanical fuel pump and NOT adjacent to the spider. Since I was already an EI customer, I ordered one of their new transducers "real cheap" telling them it was a spare for the FlowScan. It was actually for the RV-10. I talked to EI at length at OSH and it WILL be mounted Not sure who you spoke to at EI but unless I hear it from Mac Speed, it's not gospel. Also not sure what to make of the "push-pull" stuff, but in the world of fluid dynamics, flow is flow. The EI FT-60 (Red Cube) Fuel Flow Transducer, while a different form factor than the FloScan, is electrically compatible with the FloScan. EI went with their own design they said, to reduce cost and because they thought they could improve it. One of the improvement was a "straight thru" flow design. In the FloScan, supposedly the fuel has to do a 90 degree turn to exit. As to them not wanted it mounted "rigid", I'm not sure what the logic is here. Both units have an internal impeller and would be equally susceptible to any vibration. In my Cardinal I've have the EI Fuel Flow instrument with the original FloScan transducer mounted rigidly to the firewall, though the lines to it are flexible. It is mounted just after the main fuel line outlet from the firewall, before the mechanical fuel pump and NOT adjacent to the spider. Not sure who you spoke to at EI but unless I hear it from Mac Speed, I have to take it with a grain of salt. Also, not sure what to make of the "push-pull" stuff, but in the world of fluid dynamics, flow is flow weather it is “push” or “pulled”—you are measuring flow not pressure. Reading the install manual for the FT-60 it only mentions that the fuel line out from the transducer NOT drop down and that the wires should NOT be pointing down. It also cautions that the transducer “should NOT be installed next to the exhaust system.. Excessive heat can damage the system.” Now if you are placing it “before the fuel goes into the divider”, even below the engine this is a high temperature environment—you may want to check with them again and inquire why they are contradicting their documentation. Since I was already an EI customer, I ordered one of their new transducers "at a really good price" telling them it was a spare for the FlowScan. It is actually for the RV-10 to be used with the Grand Rapid EIS. I talked to EI at length at OSH and they did not mention any of the “push-pull”, rigid mounting or any of these issues. I modified the FloScan mount to accept the new EI transducer and I’ll let you know how it works out. Nothing in the documentation contradicts locating it in the tunnel. >If anyone is going to use the MVP-50 from Electronis Intl like I am, you might >save yourself some time and NOT install the fuel-flow transducer bracket in the tunnel. > EI does NOT use the FlowScan transducer. They use their own that they designed. >They do not want it mounted "rigid." They want it mounted on a flex line >just before the fuel goes into the divider. They told me they reason for that >is that they want fuel "PUSHED" into the Transducer and not possibly "PULLED" >by the engine fuel pump. > >Zack > >-------- >RV8 #80125 >RV10 # 40512 William Curtis http://wcurtis.nerv10.com/ [quote][b]
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GRANSCOTT(at)aol.com
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| Posted: Wed Oct 04, 2006 3:20 am Post subject: MVP-50 Fuel Flow Transducer |
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In a message dated 10/3/2006 8:01:09 PM Eastern Standard Time, wcurtis(at)core.com writes:
| Quote: | | I ordered one of their new transducers "at a really good price" telling them it was a spare for the FlowScan. It is actually for the RV-10 to be used with the Grand Rapid EIS. |
Not trying to be judgemental, but a "little" lie about a product's intention to get a lower price? I guess there are some things we don't need to know.
P
[quote][b]
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