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Old 12-05-2012, 09:43 PM   #121 (permalink)
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You could file/rough up the shaft to increase the surface area of the bond.

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Old 12-05-2012, 09:50 PM   #122 (permalink)
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+ 1

Maybe some epoxy instead? J B weld? Shouldn't take much. Thanks for posting frequent pics.
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Old 12-06-2012, 07:34 AM   #123 (permalink)
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Roughing up the shaft certainly wouldn't hurt at all.

I thought about using JB weld. I thought it might be too brittle to hang onto the coroplast over time. But, if its pushed into the square of the coroplast cavity that might work perfectly. I think I'll give it a shot. Thanks.
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Old 12-06-2012, 08:36 PM   #124 (permalink)
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I took both aforementioned suggestions. I cut out the silicon with an exacto knife and pulled the rods out. I took some 80 grit sandpaper to them to rough them up. Then I mixed up some JB weld and started smooshing it into the grooves. The JB weld was thinner than my expired silicon so it actually packed in there real good. I don't think I'll have any problems with it now. Thanks guys.

Here are a few pics:



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Old 12-07-2012, 07:46 AM   #125 (permalink)
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I can't wait to see it working. When you're planning first testing session?
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Old 12-07-2012, 09:23 AM   #126 (permalink)
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I hope to have it bench tested this weekend.
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Old 12-07-2012, 12:46 PM   #127 (permalink)
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Quote:
Originally Posted by Daox View Post
I hope to have it bench tested this weekend.
What kind of "threshholds" do you think you'll use?

OPEN @ slow speeds, when ambient air is warm?
CLOSED @ high spees
OPEN when water-temp gets high (what temp)?

CLOSED @ slow speeds (to speed warm-up)
OPEN only when water-temp gets high.

I'm curious.
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Old 12-07-2012, 01:24 PM   #128 (permalink)
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The programming will be almost entirely based off of engine coolant temperature (I'll also open it up when the A/C is turned on). I don't see a need to have ambient temperature or vehicle speed effect things.

I plan on having it closed all the time until engine coolant hits around 200F / 93C. This should be well above the thermostat temp (so radiator is fully saturated at 200F) and still below the coolant fan turn on temperature. This will utilize the radiator only at the maximum delta temperature which allows greater cooling efficiency so that the time the grill block is open can be minimized. I'll shut the grill block when the coolant temp falls back down to around 190F / 88C which should be just above the thermostat opening temperature. If I find that this is cycling things too much I'll adjust it so that the block closes say... 15 seconds after the coolant temp hits 190F to give some time to cool down the radiator.
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Old 12-07-2012, 06:24 PM   #129 (permalink)
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JB Weld

It has been said,that if you peel the duct tape back on Earth's equator,you'll find that the two hemispheres are held together with J B Weld.
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Old 12-09-2012, 09:13 PM   #130 (permalink)
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Very cool! Please keep us updated!

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