X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 1 [X] Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 5.1.4) with ESMTP id 1720891 for flyrotary@lancaironline.net; Thu, 28 Dec 2006 08:41:26 -0500 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=Lehanover@aol.com Received: from Lehanover@aol.com by imo-m28.mx.aol.com (mail_out_v38_r7.6.) id q.d2d.32b6087 (41812) for ; Thu, 28 Dec 2006 08:40:29 -0500 (EST) From: Lehanover@aol.com Message-ID: Date: Thu, 28 Dec 2006 08:40:27 EST Subject: Re: [FlyRotary] Yet another limp home story To: flyrotary@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1167313227" X-Mailer: 9.0 Security Edition for Windows sub 5359 X-Spam-Flag: NO -------------------------------1167313227 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en =20 In a message dated 12/27/2006 11:16:36 P.M. Eastern Standard Time, =20 deltaflyer@prodigy.net writes: When this fuel tank was first constructed in 2001 leftover pieces of =20 fiberglass samples were submerged in fuel to test its long-term effects. Tho= se =20 pieces are still in tact, but that was the old fuel with MTBE. The fuel tank is being used to test the new formulation and it appears that= =20 it is failing.=20 Next project =E2=80=A6 perhaps an aluminum fuel tank. Well back to the drawing board. Jim Maher=20 (Dyke Delta N11XD 13B 4.1 hrs) Is that tank epoxy lined, or some other? =20 Fuel filters are always too big until you need them to work flawlessly,=20 then they are always too small. =20 On the bright side, you are getting good in a cross winds. And look how lea= n=20 a rotary will run and still put out quite a bit of power.=20 =20 This is another vote for Richard Sohn's OMP adaptor. So lube oil is injecte= d=20 as a function of throttle position rather than fuel volume as in premixing,= =20 or pulling oil from the sump. Plus using the correct oil (high quality 2=20 stroke). =20 Years ago at Pocono we were racing a GTU car powered by a rotary (of =20 course). It had Marstec fuel cells stolen from a Lola. That was when the oil= =20 companies started adding alcohol to their fuel. I filled it up with that cra= p and=20 never thought about it.=20 =20 The car went 2 laps and came in. No power. It wouldn't even rev up in =20 neutral. It was down to enough fuel to idle fast, and that was all. Squirtin= g fuel=20 into the carb revved it right up. The 4 suction side fuel filters were =20 plugged with a reddish mud. The fuel cell foam had been dissolved and turned= into=20 slime. End of weekend. =20 That car had 4 pumps. 4 suction side filters, a small collector tank they =20 all fed into and that tank had a metered line that fed excess fuel back to t= he =20 right side cell so the left tank would run out first as it had the fast fill= =20 port in it, and a last chance filter before the carb. The last chance had =20 discolored fuel in it but no solids. Had the suction filters had more media=20= area =20 we may have gone 3 laps. =20 Had it been an airplane, that last few minutes of power from bigger filters= ,=20 might have made a much bigger difference. =20 =20 I would do it with a 33 gallon cell where that 47 is now and a 10 or 12 =20 gallon cell in each stub wing. Even the cheapest street rod cells are bullet= =20 proof and take street fuel well. You can also take out the foam and eliminat= e any=20 problems from future formulation changes, and still have the advantage of a=20= =20 nearly bullet proof container. You can order them with no can, a steel can,=20= or=20 an aluminum can. They are very stiff, and I would use no can at all. There=20 was a repair station in Kentucky years back that would make a cell from you= r=20 drawing, or repair anything you sent them. I forgot the name but it might b= e=20 worth a try to find them.=20 =20 We ground through a right side cell in a Lola at Charlotte by touching the=20 track on the banking. The driver didn't say anything until he smelled fuel.=20= =20 The ATL rep repaired it on the spot by installing an access port where the c= ell =20 was damaged. It was an old Marstec, and when it came back from repair, it wa= s=20 a brand new cell with the Marstec fuel ports and that same repair port =20 reinstalled. If you have a scrap of cell and a picture, they can legally reb= uild =20 the cell for you. It will be pricey however. =20 =20 Lynn E. Hanover =20 -------------------------------1167313227 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Content-Language: en
In a message dated 12/27/2006 11:16:36 P.M. Eastern Standard Time,=20 deltaflyer@prodigy.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>
When this fuel tank was first constructed in 2001 leftover pieces of=20 fiberglass samples were submerged in fuel to test its long-term effects. T= hose=20 pieces are still in tact, but that was the old fuel with MTBE.
The fuel tank is being used to test the new formulation and it appear= s=20 that it is failing.
Next project =E2=80=A6 perhaps an aluminum fuel tank.
Well back to the drawing board.
Jim Maher
(Dyke Delta N11XD 13B 4.1 hrs)
Is that tank epoxy lined, or some other?
 
Fuel filters are always  too big until you need them to work=20 flawlessly, then they are always too small.
 
On the bright side, you are getting good in a cross winds. And look how= =20 lean a rotary will run and still put out quite a bit of power.
 
This is another vote for Richard Sohn's OMP adaptor. So lube oil i= s=20 injected as a function of throttle position rather than fuel volume as in=20 premixing, or pulling oil from the sump. Plus using the correct oil (high=20 quality 2 stroke).
 
Years ago at Pocono we were racing a GTU car powered by a rotary (of=20 course). It had Marstec fuel cells stolen from a Lola. That was when the oil= =20 companies started adding alcohol to their fuel. I filled it up with that cra= p=20 and never thought about it.
 
The car went 2 laps and came in. No power. It wouldn't even rev up in=20 neutral. It was down to enough fuel to idle fast, and that was all. Squirtin= g=20 fuel into the carb revved it right up. The 4 suction side fuel filters were=20 plugged with a reddish mud. The fuel cell foam had been dissolved and turned= =20 into slime. End of weekend.
 
That car had 4 pumps. 4 suction side filters, a small collector tank th= ey=20 all fed into and that tank had a metered line that fed excess fuel back to t= he=20 right side cell so the left tank would run out first as it had the fast fill= =20 port in it, and a last chance filter before the carb. The last chance had=20 discolored fuel in it but no solids. Had the suction filters had more media=20= area=20 we may have gone 3 laps.
 
Had it been an airplane, that last few minutes of power from bigger=20 filters, might have made a much bigger difference.  
 
I would do it with a 33 gallon cell where that 47 is now and a 10 or 12= =20 gallon cell in each stub wing. Even the cheapest street rod cells are bullet= =20 proof and take street fuel well. You can also take out the foam and eliminat= e=20 any problems from future formulation changes, and still have the advantage o= f a=20 nearly bullet proof container. You can order them with no can, a steel can,=20= or=20 an aluminum can. They are very stiff, and I would use no can at all. There w= as a=20 repair station in Kentucky years back that would make a cell from your drawi= ng,=20 or repair anything you sent them. I forgot the name but it might be worth a=20= try=20 to find them.
 
We ground through a right side cell in a Lola at Charlotte by touc= hing=20 the track on the banking. The driver didn't say anything until he smelled fu= el.=20 The ATL rep repaired it on the spot by installing an access port where the c= ell=20 was damaged. It was an old Marstec, and when it came back from repair, it wa= s a=20 brand new cell with the Marstec fuel ports and that same repair port=20 reinstalled. If you have a scrap of cell and a picture, they can legally reb= uild=20 the cell for you. It will be pricey however.  
 
Lynn E. Hanover   
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