06-10-2018, 09:31 PM
So, pile-o-scraps bender made the flat bracket into this:
Solid starting point geometry-wise, but too discouraging to the 313 CFM of air trying to cruise through.
Easy enough fix, you know the drill . . .
Holes have big-ass chamfers on both sides to help 'em invite the air to maintain course and speed. Also added 2 mounting bolt holes in the bottom tab.
And a little softening with a stripping wheel on a 4-1/2" angle grinder to smooth all edges and make the bracket aerodynam-ish
Blue paint of course, and recessed the pins from the connector and made 'em into a two-prong plug for use with female spade terminals.
The connector that came on the SPAL fan is an OEM connector for . . . :dunno: something I don't own
Here's a detail of how the fan bracket mounts to the compressor mounting plate.
Extra length of mounting tab with unneeded factory hole was cut off (bolt would've hit brake line underneath).
This gives you an idea of the vertical placement with respect to the OBA compressor (currently a Viair 400C).
And here's an aerial view showing you where it's moving air from and to.
RESULTS: FAAAHHHRRRKIN' OSSUM! The fan absolutely kicks ass.
Today, from compressor off at zero PSI, I aired up 4 37s from 8 - 30 PSI in 17 minutes. EDIT - NOTE: filled to 30 PSI hot, tires were 26.5 - 27 PSI cold the next morning (just as expected).
30 PSI was for easy early-morning math, I usually air up to 31.5 hot to arrive at 28 cold.
I think cooling the compressor shaved a minute or 2 off each tire, and I know I got nowhere near the thermal protection shutoff on the compressor (no horrific time-suck = a time-saver any day).
This project was horribly frustrating mid-project, but the payoff made it all worthwhile. Fawk yeah!
Unless some weird problem arises that I've not anticipated, I'm calling the OBA fan project a slam-dunk, kick-ass win! :D
06-11-2018, 09:25 AM
geberhard
BAD ass recycling and the fan mount looks billet great!!
06-11-2018, 11:36 AM
mille657
This build is awesome from start to now! You've given me several ideas for my Jeep that I plan on accomplishing in the near future. Thanks for
sharing so much information
06-11-2018, 08:54 PM
geberhard said:
BAD ass recycling and the fan mount looks billet great!!
Thanks Gui!
It makes my day to find a volunteer in my scrap pile with "unrecognized potential" - makes me feel like an arteest .
If I could sling bullshit as well as I can a 4-1/2" angle grinder, I'd skip the paint and sell shit like that to hipsters as "repurposed", "upcylced", "industrial", or maybe even "steampunk" art for ~$300, instead of bolting it on my Jeep as a ~$10 bracket that I have . . . :dunno: . . . too many hours into
mille657 said:
This build is awesome from start to now! You've given me several ideas for my Jeep that I plan on accomplishing in the near future. Thanks for sharing so much information
Thanks mille657!
Glad you found some inspiration. If you have any questions, feel free to ask.
I'm running out of bullshit to type about in this thread, so help is always appreciated :D
06-12-2018, 05:34 AM
j3ff3ry_j33p
The fan and bracket have renewed my optimism - at least fir today - due to the ingenuity, Ex.
Extremely interesting , useful and typically brilliant.
That is how this Jeep thing is supposed to be done.
I’m being serious. I just think that last update about the fan is the tits, bud.
[USER][/USER]
, ftw!
:jeep:
06-12-2018, 01:28 PM
j3ff3ry_j33p said:
The fan and bracket have renewed my optimism - at least fir today - due to the ingenuity, Ex.
Extremely interesting , useful and typically brilliant.
That is how this Jeep thing is supposed to be done.
I’m being serious. I just think that last update about the fan is the tits, bud.
, ftw!
:jeep:
Thanks j3ff3ry!
I've been meaning to do the OBA fan for awhile now, and an upcoming trip lit the fire under my ass.
I was bummed when the hang-from-hood solution didn't work out, but now I'm happy it didn't - I wouldn't change a thing about this setup :D
Considering how I like to second-guess my work and redo shit when I find room for improvement, "don't fuck with it" is a great project status
06-12-2018, 01:55 PM
Texas_Jester
too cool, nice job, the whole thread is awesome, but that's the tits right there! :)
06-12-2018, 07:23 PM
Texas_Jester said:
too cool, nice job, the whole thread is awesome, but that's the tits right there! :|
Thanks Texas_Jester!
For a modification that seriously blows, I'm pretty happy with it