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Old 10-30-2014, 02:48 PM   #281
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And yet, seeing reports of these being ran in miatas successfully (alternator output 55-65 amps AFAIK)
The alternator largely powers spark/lights/ecu/things that don't exist on track cars. There should be a protection circuit in the battery that limits the current to 10A.
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Old 10-30-2014, 03:09 PM   #282
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There is control logic in every LiFePO cell.
The charge limit would mean no alt belt squeal after startup (when a Lead battery takes all it can get).

Having a min weight to meet, I prefer as heavy battery as possible .
Or stock with 20lb xtra lead in the bottom of the tray.
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Old 10-30-2014, 05:24 PM   #283
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I made a quick battery tray out of scrap. This is temporary but it only adds 100 grams.



It would be really easy to make a silicone mold of the area where the battery fits and then do a composite tray off of that. Some day.
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Old 10-30-2014, 09:11 PM   #284
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Having a min weight to meet, I prefer as heavy battery as possible .
Or stock with 20lb xtra lead in the bottom of the tray.
I've reached the same point. I bought my ballistic 12-cell last year while I was gutting and caging the car and trying to drop weight. I didn't have time to install the battery before my first event, where I found out that all my weight reduction efforts were too successful and I was almost 100 pounds underweight. I'm about to just put the ballistic in my DD so that it doesn't go to waste.
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Old 10-31-2014, 02:42 AM   #285
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Miata Challenge super mod weight restriction is 2000 lbs with driver. I have a ways to go..

Now branching into other TT's, all of which are unrestricted weight, and in the process I'll almost certainly bump to Unlimited in Miata Challenge, where it is also unrestricted

Agreed that if you need weight, the back right corner is a decent place to have it though.

-Ryan
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Old 10-31-2014, 02:51 PM   #286
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Agreed that if you need weight, the back right corner is a decent place to have it though.

-Ryan
Really? I thought consensus opinion was that all optional weight should be placed low and within the wheelbase to minimize polar moment. Only drag cars weight up rr corner.
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Old 10-31-2014, 03:17 PM   #287
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When mine were a bit heavier 20lb lead in the battery tray I got 50/50 F/R and L/R, not only a 50.0 cross.
The benefits of 50/50 (mass balance) can always be argued, but why not .
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Old 10-31-2014, 03:51 PM   #288
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When mine were a bit heavier 20lb lead in the battery tray I got 50/50 F/R and L/R, not only a 50.0 cross.
The benefits of 50/50 (mass balance) can always be argued, but why not .
I think I remember reading somewhere that there was a restriction on the thickness of the footing places for a cage in spec miata because some guys where using 1" thick steel plates in the right trunk footing in order to get better balance.
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Old 10-31-2014, 03:55 PM   #289
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You just need to sneak some tungsten into your cage tubes. Good luck protesting that.
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Old 11-04-2014, 06:16 PM   #290
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back to the lights....
I wonder if these would work. Seem small enough and takes an H7 bulb.

My Hella Lights :: FF 75
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Old 11-04-2014, 09:43 PM   #291
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They actually look pretty good for my purposes. i measured and looks like they will fit right it. first things first ill hack up some ebay clear blinker housings and see what i can make work for the blinker part of this.

Last edited by Twibs415; 11-04-2014 at 09:56 PM.
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Old 11-04-2014, 10:18 PM   #292
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They actually look pretty good for my purposes. i measured and looks like they will fit right it. first things first ill hack up some ebay clear blinker housings and see what i can make work for the blinker part of this.
.

Looks like summit sells some universal 1157 bulb holders for fairly cheap too. Could probably mount these on a peice of aluminum next to the headlight.

http://m.summitracing.com/parts/pco-5451pt
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Old 11-04-2014, 10:51 PM   #293
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I wonder if these would work. Seem small enough and takes an H7 bulb.

My Hella Lights :: FF 75
I have those as fogs. The light output is disappointing. I'm gonna try and retrofit projectors into clear turn signal housings one of these days.
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Old 11-04-2014, 11:27 PM   #294
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I have those as fogs. The light output is disappointing. I'm gonna try and retrofit projectors into clear turn signal housings one of these days.
Do you have the fog version or the driving version? I think there is more than one. I stumbled onto these looking at 93-97 Camaro headlight retrofits and it seems these are supposed to perform better than factory sealed beam headlights, at least on those cars.

I also found these at a considerably higher price point, but I would like to find out more about them. Sounds like it's an HID projector in a Delrin housing.

http://www.blackbirdlighting.com/camaro93-97.php

Sorry I can't hyperlink it, I'm on my phone....
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Old 11-04-2014, 11:29 PM   #295
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The driving version. I would go with those other ones. Those look sweet. I'm gonna look into those.
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Old 11-04-2014, 11:41 PM   #296
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Yeah I emailed them earlier to see if they offer any kind of universal kits. Hopefully cheaper than the plug and play version.
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Old 11-04-2014, 11:42 PM   #297
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Yeah I emailed them earlier to see if they offer any kind of universal kits. Hopefully cheaper than the plug and play version.
Might be cheaper to do your own retrofit.
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Old 11-05-2014, 12:17 AM   #298
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Output cant be worse than stock na headlights... Again back on track. This is a track car thread and light output is not crucial it just needs to be legal and put some light on the road for my way to and from the track at night. If i wanted high light output on a track car it would be a light bar.
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Old 11-05-2014, 12:18 AM   #299
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Output cant be worse than stock na headlights... Again back on track. This is a track car thread and light output is not crucial it just needs to be legal and put some light on the road for my way to and from the track at night. If i wanted high light output on a track car it would be a light bar.
Totally forgot where we were. Those hella driving lights would be fine for occasional driving.

Something like
this this
might fit too.
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Old 11-05-2014, 01:11 AM   #300
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Totally forgot where we were. Those hella driving lights would be fine for occasional driving.

Something like this might fit too.


its lame to watch but they dont seem that bad to be honest. probably better than oem lights and for the price its hard to beat i think
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