BMI's DB12R
12-27-2008, 03:03 PM
#6528
I collected a complete set of aluminum screws and compared them with the weight of steel screws that come with the 12R kit. Net savings...12 grams. Less than 1/12 ounce. Titanium will save a little weight from the steel but will still be heavier than the aluminum screws.
12-27-2008, 08:43 PM
#6530
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I collected a complete set of aluminum screws and compared them with the weight of steel screws that come with the 12R kit. Net savings...12 grams. Less than 1/12 ounce. Titanium will save a little weight from the steel but will still be heavier than the aluminum screws.
I did the same, but with a few of each screws and extrapolated out... the weight savings wasnt worth the headache of stripped and busted screws.
12-27-2008, 10:14 PM
#6531
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Gotta question. I'm well aware of how silly small of a tire I can run on the DB12RR, but how small is too small? Seems like the rears go below 1.700 things start to get a little unpredictable.
12-27-2008, 10:32 PM
#6532
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Hey Chris,
The smallest I ran mine where 1.58" to 1.60 front to about a 1.68 rear On my car. My car ran fine, you just have to let the traction soak in a little longer. A larger Dia tire will hold traction longer than a smaller Dia tire.
I just think you went too heavy in the dampner tubes.
The smallest I ran mine where 1.58" to 1.60 front to about a 1.68 rear On my car. My car ran fine, you just have to let the traction soak in a little longer. A larger Dia tire will hold traction longer than a smaller Dia tire.
I just think you went too heavy in the dampner tubes.I did mine with 400 grit sandpaper. Just sanded enough to dull the sharp edge of the chassis down. At first glance, it doesn't look like much, but you can feel the difference with the tip of your finger.
Gotta question. I'm well aware of how silly small of a tire I can run on the DB12RR, but how small is too small? Seems like the rears go below 1.700 things start to get a little unpredictable.
Gotta question. I'm well aware of how silly small of a tire I can run on the DB12RR, but how small is too small? Seems like the rears go below 1.700 things start to get a little unpredictable.
12-28-2008, 07:53 AM
#6533
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I'll try letting them soak longer. Gotta mount up a new set for next week any way. These things r worn out ( maybe 1.62?)
See you at the track.
See you at the track.
12-28-2008, 09:58 AM
#6534
flex plates
What does mounting the "flex plates" using the longer position (12rr car) as opposed to the standard position (12r car). How will this effect the handling of the car.
I updated my 12r to the 12rr version
I updated my 12r to the 12rr version
12-28-2008, 10:39 AM
#6535
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Hey Twin 1 Kevin,
The Longer Flex Plates mellows the car out they work great on high bite tracks.
Hope this helps.
Mike
The Longer Flex Plates mellows the car out they work great on high bite tracks.
Hope this helps.
Mike
12-28-2008, 11:14 AM
#6536
Thanks Mike.
12-28-2008, 01:08 PM
#6538
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So I truly busted the first parts on my DB12RR today.
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
Last edited by Clegg; 12-28-2008 at 01:31 PM.
12-28-2008, 02:58 PM
#6539
So I truly busted the first parts on my DB12RR today.
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
12-28-2008, 03:41 PM
#6540
So I truly busted the first parts on my DB12RR today.
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
THe track I race at has a long sweeper after a 50+ ft straight. We are running 17.5/4 cell. I was running fast lap times for the first qualifier and lost composure (either I did or the car did) and hit the far wall in the sweeper pretty hard, snapping both flex plates.
So I figured "oh well - live and learn" So I went and replaced the busted flex plates since I had a spare set.
Went back out for the second heat - once again setting fast laps for the day (improved on my earlier fast lap by .2 sec)... and this time to pass someone who was hugging the line but was far slower than me around the sweeper I went inside and just barely nicked the inside corner and it cause the car to lose ballance and head into the same wall as before - this time it not only snapped both flex plates but also popped the pivot off in the center of the chassis. No other damage - but my day was over as I am out of flex plates.
The weird thing is.. this track has been setup like this for 3 weeks and I have run 3 weekends now, and a bunch of practice and never busted a part before... just a bad luck day. (and just starting to realize how expensive the flex plates are)
An order has been placed at BMI - now all I can do is hope they come in soon
HTH