darylat8750
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- Jun 20, 2008
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I did a search to no avail. If I missed this please let me know.
I'm hoping to get some hard numbers on the actual, installed weights of various fire wall forward installations. So many of the numbers given by manufactures and engine builders are difficult to compare. One will give numbers with no mags, plugs, harness, oil cooler, induction/carb/FI system and another will include some but not all. At OSH I asked an auto engine converter what the fire wall forward wt was and he gave me a number that was so low it took my breath away. So I said did that include: radiator? NO. Coolant? No. Fuel pump? NO. Prop Gov? NO. I said "Well what is the wt of everything in front of the fire wall?" He said "I don't know." I think what he was really saying is that he was afraid to add it up. Some prop. people include the gov. and some don't. Then you have all the wires, cables ect. Cowling weights vary as well.
So maybe I'm a "Polly Anna" but here is the request. If everyone who has the data for their installation could list every thing they have forward of the fire wall with it's weight we might be able to get enough of a data base to help others with the planning. There is expected to be variations even among identical engine and prop combinations and it will be useful to figure out the differences. In a perfect world we would hook a scale to the top of the engine and unbolt it at the firewall. That will not happen but if everyone who responds would be as accurate as possible and disclose their level of confidence with the number presented that would be appreciated.
I'm hoping to get some hard numbers on the actual, installed weights of various fire wall forward installations. So many of the numbers given by manufactures and engine builders are difficult to compare. One will give numbers with no mags, plugs, harness, oil cooler, induction/carb/FI system and another will include some but not all. At OSH I asked an auto engine converter what the fire wall forward wt was and he gave me a number that was so low it took my breath away. So I said did that include: radiator? NO. Coolant? No. Fuel pump? NO. Prop Gov? NO. I said "Well what is the wt of everything in front of the fire wall?" He said "I don't know." I think what he was really saying is that he was afraid to add it up. Some prop. people include the gov. and some don't. Then you have all the wires, cables ect. Cowling weights vary as well.
So maybe I'm a "Polly Anna" but here is the request. If everyone who has the data for their installation could list every thing they have forward of the fire wall with it's weight we might be able to get enough of a data base to help others with the planning. There is expected to be variations even among identical engine and prop combinations and it will be useful to figure out the differences. In a perfect world we would hook a scale to the top of the engine and unbolt it at the firewall. That will not happen but if everyone who responds would be as accurate as possible and disclose their level of confidence with the number presented that would be appreciated.