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Old 04-27-2017, 11:45 PM   #81 (permalink)
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Quote:
Originally Posted by freebeard View Post
That's a lot of work to go to so you don't have to lower your truck 4".
It would cost a whole lot more and be a ton more work to lower the truck 4" than the method I'm using now. At least I can return my truck back to full stock in about an hour. Can't say or do that with a lowered truck.

I'm not sure if I'm the only one using a dropped belly pan system. It looks that way so far...trail blazer!

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Old 04-28-2017, 02:36 AM   #82 (permalink)
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I take your point.

One might say "frontal area, be-dammed."
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Old 04-28-2017, 09:55 AM   #83 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
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Quote:
Originally Posted by freebeard View Post
I take your point.

One might say "frontal area, be-dammed."
Since I dropped the front air dam down, anything else after that would be a wash. The belly pan design I'm using is almost completely flat from the front of the truck to the rear of the truck. It is as low as the lowest point (rear differential and leaf springs).
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Old 04-29-2017, 12:52 PM   #84 (permalink)
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Go Bam go!!!!!!!!!!!!!!!!
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Old 05-01-2017, 06:54 PM   #85 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
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Front wheel spats!




The spats are made from a scrap piece of edging and sandwiched in between the support beams fer the front air dam belly pan and the engine bay belly pan




I will probably have to screw or ziptie them in place just so they don't pop out on their own.
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Old 05-01-2017, 09:16 PM   #86 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 20.99 mpg (US)

BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 23.66 mpg (US)

BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 19.01 mpg (US)

BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 19.68 mpg (US)

BZP T-100 (2013) - '98 Toyota T-100 SR5
90 day: 20.6 mpg (US)

BZP T-100 (2014) - '98 Toyota T-100 SR5
90 day: 21.28 mpg (US)

BZP T-100 (2015) - '98 Toyota T-100 SR5
90 day: 20.56 mpg (US)

BZP T-100 (2016) - '98 Toyota T-100 SR5
90 day: 20.54 mpg (US)

BZP T-100 current (2017) - '98 Toyota T-100 SR5
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Clearance is 3.5" on the left and 3.25" on the right. I think the clearance on the left will drop once I git in the driver's seat.
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Old 05-01-2017, 10:02 PM   #87 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 20.99 mpg (US)

BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 23.66 mpg (US)

BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 19.01 mpg (US)

BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 19.68 mpg (US)

BZP T-100 (2013) - '98 Toyota T-100 SR5
90 day: 20.6 mpg (US)

BZP T-100 (2014) - '98 Toyota T-100 SR5
90 day: 21.28 mpg (US)

BZP T-100 (2015) - '98 Toyota T-100 SR5
90 day: 20.56 mpg (US)

BZP T-100 (2016) - '98 Toyota T-100 SR5
90 day: 20.54 mpg (US)

BZP T-100 current (2017) - '98 Toyota T-100 SR5
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Quote:
Originally Posted by gumby79 View Post
Wow what a ride ....almost 5 years of R&D to this point.
Dam troll glad he went away
In post #18 pic #4
I noticed the doubled up hinges. And was thinking this would have the same effect as a Panhard Bar with too much angle, making it move forward and backward as the suspension cycles putting stress on the fixed front mount.. Causing causing the failure in post#21. In post #25 pic#2 the triple hinges is a nice solution.
Do you have any pictures of the flow visualization patterns on the belly, boat tail?
---
Hears a way not to have to wait for mother nature to make the marks.

Velox Motorsports Diffuser flow Visualization Testing
They used China white clay in water to make the juice .

Was there much of a difference between running the rear diffuser at 2 Vs 10? Or was the angle change to better facilitate the boat tail trailer?

Keep on keeping on. I like the aluminum.
@gumby79
Sorry fer the late reply.

Post 18, piccie #4 was a learning phase on how to address lateral movement and pivoting of the rear diffuser as the rear axle moved.



I believe the hinge that failed at the fastener hole because of the method I used to fasten it to the wooden support. The T-nut eventually gave way which allowed slop to be introduced and straining the hinge leaf.

Post #25, piccie #2 was another attempt to address the requirement fer lateral movement. I'll have to post a piccie of the current revision.


I do not have any flow visualization patterns on the boat tail belly pan. The gap cover wasn't flat or ideal and had enough influences on the flow. It was a rough attempt to understand the next mechanical build.

The change of the adjustable diffuser angle was an attempt to see what difference it would make. I think the angle is currently set fer around 4 degrees. The front of the boat tail trailer was built to best match the clearance required and the approximate exit angle fer the rear diffuser. It was a shot in the dark on how to make them match up at the time with the gap cover. I will have to recalculate the angle and rebuild accordingly if necessary.

It may seem crude fer my builds but most of the time I'm taking a shot at what might work and seeing what the results are. Eventually, I might git it dialed in correctly and I probably wouldn't even know it until I collect enough MPG data or see how the dirt flow analysis turns out.
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Old 05-01-2017, 11:45 PM   #88 (permalink)
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Looks good.

I get the vertical clearance. How does it align with the face of the wheel and tire?
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Old 05-02-2017, 10:47 AM   #89 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 20.99 mpg (US)

BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 23.66 mpg (US)

BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 19.01 mpg (US)

BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 19.68 mpg (US)

BZP T-100 (2013) - '98 Toyota T-100 SR5
90 day: 20.6 mpg (US)

BZP T-100 (2014) - '98 Toyota T-100 SR5
90 day: 21.28 mpg (US)

BZP T-100 (2015) - '98 Toyota T-100 SR5
90 day: 20.56 mpg (US)

BZP T-100 (2016) - '98 Toyota T-100 SR5
90 day: 20.54 mpg (US)

BZP T-100 current (2017) - '98 Toyota T-100 SR5
90 day: 24.78 mpg (US)
Thanks: 2,933
Thanked 1,238 Times in 870 Posts
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Quote:
Originally Posted by freebeard View Post
Looks good.

I get the vertical clearance. How does it align with the face of the wheel and tire?
I'm not sure what you mean by "align". Since I just stuck it on there, it hasn't been tuned/adjusted/aligned fer correct width and placement to the tires yet. The front spats are on there now to see how many issues I might have with it being that low and its position. I'll have to address the width and how close to the outer edge of the air dam/tire the spat will stick out as well as the ultimate shape at a later time. I do know I can't park too close to any of the cement parking stops.

I do have concerns about gitting enough air to the brake rotors...maybe forced air or a mechanized door/flap but I don't want to make the system too overly complicated or dependent on its function. I'll probably install a thermo probe in the brake pads to see how warm they are gitting and how long it takes to cool down.
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Old 05-02-2017, 12:21 PM   #90 (permalink)
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 20.99 mpg (US)

BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 23.66 mpg (US)

BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 19.01 mpg (US)

BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
90 day: 19.68 mpg (US)

BZP T-100 (2013) - '98 Toyota T-100 SR5
90 day: 20.6 mpg (US)

BZP T-100 (2014) - '98 Toyota T-100 SR5
90 day: 21.28 mpg (US)

BZP T-100 (2015) - '98 Toyota T-100 SR5
90 day: 20.56 mpg (US)

BZP T-100 (2016) - '98 Toyota T-100 SR5
90 day: 20.54 mpg (US)

BZP T-100 current (2017) - '98 Toyota T-100 SR5
90 day: 24.78 mpg (US)
Thanks: 2,933
Thanked 1,238 Times in 870 Posts
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Here's the current design of the rear diffuser hangers.

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