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Old 12-11-2011, 10:42 PM   #76 (permalink)
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We went with a tank in the cab for similar reasons. First being to get the COG down. Second being to trade the potential straight line handling benefits of a rear mounted tank for the turning and crawling benefit of having that weight forward.

The trend in U4 seems to move toward a traditional desert biased car with it's large and heavy rear tank. This is much more evident this year than last. Seems great if you are running a 250-300+ mile desert race and you get lucky enough to need no pits. But even 40 gal of fuel will take you 200 miles if you get only 5mpg. That's more than plenty for every u4 race even if you never pit for anything. (and that's unlikely). And 40 gal gas weighs 320 lbs. 320lbs doesn't mean as much in the desert as it does trying to lift that sack of sloshing mass in the rocks.
I suppose most teams are putting these massive tanks in for potential other desert races because I doubt many teams are going to fill these big tanks all the way up when rocks are on the menu.
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Old 12-11-2011, 11:51 PM   #77 (permalink)
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So, 40 gallons is where we are at..
At 7lbs per gallon that's 280 lbs plus the weight of the cell. I guess that's not too much more than an average co-driver, seat, etc. It's probably about 100lbs more than having me in the right seat though
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Old 12-12-2011, 12:09 AM   #78 (permalink)
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I think Jason was going just as fast-or faster- when he lost some wieght in that same place last year for the second lap I wonder if he noticed a handling difference?

BTW the car and front end parts look great. I can't wait to see how this car comes together...Literally
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Old 12-12-2011, 07:33 AM   #79 (permalink)
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I'm glad there is someone out there with a since of humor!
Cool build! I enjoyed the humor and can't wait to see JS kick some ass with this car.
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Old 12-12-2011, 08:19 AM   #80 (permalink)
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Great weekend of progress! Thanks Trout, you are one talented mofo.
Tim/Dallas Lund, those uppers arms went together like big kid Lego's, jigs are working sweet

Adam, the tank looks great. Love the size! And the tube work is very well thought out, I'm loving the chassis.

On the tank: I always heard fuel was closer to 6.5lbs per gallon but with foam/pumps/bladder and mounts I'm sure we are heavier than my 170lbs + gear at a full fuel load. My thought on the fuel load/weight is that you should calculate the weight and tune the car at a half full load, so really only 20 gallons. In theory, you are closer to the half full/empty amount more often if you start full and run to near empty.

Laproscopic: My last car was 2.1 MPG at full tilt, however race mileage varies greatly depending on traffic, dust and of course once you are in the lead how you drive....keep pushing or dial it back. 5 MPG is possible if you are not pushing hard. Good points tho...thanks. BTW, most Gieser TT have about a 70 gallon tank and they pit at <140, that's not really very far in a long race. I just dream of only stopping once for fuel and having a perfect race someday where I don't need to pit or get out and wrench...we'll see if that ever happens
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Old 12-12-2011, 08:46 AM   #81 (permalink)
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Weight of gas depends on the grade. Average for pump fuel would be about 6.25 lbs per gal. for standard and 6.35 lbs per for premium.

Av gas is a little lighter at 6-6.10 lbs per gallon.





Just saying....
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Old 12-12-2011, 11:30 AM   #82 (permalink)
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Weight of gas depends on the grade. Average for pump fuel would be about 6.25 lbs per gal. for standard and 6.35 lbs per for premium.

Av gas is a little lighter at 6-6.10 lbs per gallon.





Just saying....

Knew somebody was gonna f it up with numbers and facts and stuff...

Everything looks sweet! Can't wait to see this beast in action!
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Old 12-12-2011, 11:45 AM   #83 (permalink)
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Tom gave me the run down on this at IMIS this past week. You all are gonna get me divorced. Its bad enough the kids arent going to college at this point.

Looks great Jason. Looking forward to catching up at the race.
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Old 12-12-2011, 02:35 PM   #84 (permalink)
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So does Dana know that you have her stool out in the shop? Cool to see the progress Saturday night
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Old 12-12-2011, 04:13 PM   #85 (permalink)
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Maybe you guys can build the driver seat on a slide so that as the fuel is used the driver's seat could slide towards the center to keep the weight even.
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Old 12-12-2011, 04:21 PM   #86 (permalink)
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Maybe you guys can build the driver seat on a slide so that as the fuel is used the driver's seat could slide towards the center to keep the weight even.
I know your joking. Or you just smoke more pot than me.
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Old 12-12-2011, 07:18 PM   #87 (permalink)
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Worked on the fuel cell tray today, and also did some welding around the chassis.



Oil tank came in. Finding places for all this junk is tough!

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Old 12-12-2011, 07:19 PM   #88 (permalink)
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pic's

I like the arms, pic's of hubs ?
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Old 12-12-2011, 07:41 PM   #89 (permalink)
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will I get to see this thing ripping down Front St. when its done?
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Old 12-12-2011, 08:36 PM   #90 (permalink)
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will I get to see this thing ripping down Front St. when its done?
You can come over to Ft Worth and watch it rip up and down the stockyards! Then come bail me out of jail
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Old 12-12-2011, 08:58 PM   #91 (permalink)
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You can come over to Ft Worth and watch it rip up and down the stockyards! Then come bail me out of jail
Oh come on, what're you going to do with an IFS rig in Texas! This thing better live in Cali, atleast part time.
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Old 12-12-2011, 10:03 PM   #92 (permalink)
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Tingle away. Im going home to sleep now
I am suprised the tig welder was big enough for the job....its not very big for a shop at a house lol
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Old 12-12-2011, 10:08 PM   #93 (permalink)
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I am suprised the tig welder was big enough for the job....its not very big for a shop at a house lol
Not sure if Jason is using the same tig as before, but that little tig is a quality machine... Jason could always lay killer tig welds with it... I'm sure Trout didn't have any issues.... he is a pro.

Looks killer Jay.
Can't wait to borrow it for LCQ
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Old 12-12-2011, 10:16 PM   #94 (permalink)
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Not sure if Jason is using the same tig as before, but that little tig is a quality machine... Jason could always lay killer tig welds with it... I'm sure Trout didn't have any issues.... he is a pro.

Looks killer Jay.
Can't wait to borrow it for LCQ
Yes I have seen the welds first hand from the little tig. He got something a bit bigger. Jason I know Im not much help but if I can give you a hand let me know
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Old 12-12-2011, 10:27 PM   #95 (permalink)
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2 gal tank?
3 stage pumP?
What oil pan did u go with?

Looking great.
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Old 12-12-2011, 11:17 PM   #96 (permalink)
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I can't wait to go for a test drive in it - Looking sweet - Jess
whens that gunna be? id love to come film it up there.
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Old 12-13-2011, 05:37 AM   #97 (permalink)
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2 gal tank?
3 stage pumP?
What oil pan did u go with?

Looking great.
Yes, 2 gallon tank. All GM oil pump and pan, straight from GM performance.
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Old 12-13-2011, 07:17 AM   #98 (permalink)
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So all factory gm. In retrospect this seems like the way to go. Setting up my ls motor with aftermarket dry sump stuff has been an expensive and time consuming learning curve. By the time u dry sump a crate ls3 you could have baught an ls7. ls7 crate all the way
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Old 12-13-2011, 09:00 AM   #99 (permalink)
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whens that gunna be? id love to come film it up there.
Yesterday, sweet ride for sure!
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Old 12-13-2011, 10:20 AM   #100 (permalink)
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He has a Lincoln 375 Tig now
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