[DIYguy]

Originally Posted by John Metric

?????
The top fuelers can do it with about 6000ftlbs of torque at about 7000rpm and a 3.23 rear end&35" tire and they ride the clutch all the way down until the tires grow and speed increases to finally reach 1:1.

I don't see any 5000ftlbs to 6000ftlb at 7000rpm motors on the horizon in the proper weight range.
Until somebody has a motor that gets full torque nearly the length of the 1/4 mile in a single gear I will be using gears.

I hear some of these GE's can do it but nobody releases any data showing 2000 amps all the way down the track, so I am dubious.
My 155mph Texas Mile drag run is as close to full amps all the way for 35 seconds is the closest thing I have seen to that.

Ya, that's why I said "may". I tend to be more on the side of gears also . . that's why I am going with two even tho I have a 13" motor and the ability to deliver 3000 amps. . for some period of time. Of course there are plenty who will tell you this absolutely (as you know). Vehicle weight, motor characteristics, battery HP/voltage level etc etc. all goes into it.

[DanGT86]

Wow! Love seeing builds like this! Any estimates on total race weight? Does lenco not offer any overdrive ratios? Seems like you guys favor Gv units. Seems like it would be easier if it were all lenco modules unless OD ones don't exist. Im in no way qualified to tell you that you are doing anything wrong. Seeing the GV units just made me wonder about that. Does the 2nd Gv overdrive the already overdriven output of the 1st (compounding the OD) or are they 2 different ratios that will be used one at a time? Cool build! Can't wait to see this one run!

[John Metric]

Originally Posted by DanGT86

Wow! Love seeing builds like this! Any estimates on total race weight? Does lenco not offer any overdrive ratios? Seems like you guys favor Gv units. Seems like it would be easier if it were all lenco modules unless OD ones don't exist. Im in no way qualified to tell you that you are doing anything wrong. Seeing the GV units just made me wonder about that. Does the 2nd Gv overdrive the already overdriven output of the 1st (compounding the OD) or are they 2 different ratios that will be used one at a time? Cool build! Can't wait to see this one run!

Heavier than Black Current Lighter than DC Plasma. Not sure yet(don't want to give it away yet). A lot more steel in the rear to take some real torque. DC Plasma is a 28 spline CV Shaft system, this is 3-4 times beefier than that.

Lenco does not make a shiftable overdrive and Up til about a week ago, I had called Lenco several times and they have said no fixed overdrive units either only reducers.
I have just found someone there that said they think they can run their reducer backwards with custom female spline couplers. I am waiting to hear on a final price. The idea would be permanent overdrive and all lenco reducers like a normal transmission.

The photoshop picture above I would target 1.56:1, 1:1, 1:0.78, 1:0.60
1:0.50 overdrive on front would be 3, 1.5, 1.25, 1

[DanGT86]

That's clever. So once you get the overdrive input with the custom reducer any further gear choices don't require custom work.

I was amazed that the 28 spline ford rear held together in DC Plasma with CV joints. Good thing its a pretty light car.

[John Metric]

Originally Posted by DanGT86

That's clever. So once you get the overdrive input with the custom reducer any further gear choices don't require custom work.
I was amazed that the 28 spline ford rear held together in DC Plasma with CV joints. Good thing its a pretty light car.

I had DC Plasma engineered to the scary edge of MOT specs on nearly every driveline part. 150lb Battery too. It was a neat project.

Assault n Battery is going to be another technical "what are the limits" kind of build. We are shooting for first car to 150mph in the 1/4 and maybe 200mph in the one mile, also first car to deploy a parachute, maybe 125mph in the 1/8th and a couple other milestones. Couple of sponsors that want to be part of that would be nice.

[DIYguy]

Originally Posted by John Metric

I had DC Plasma engineered to the scary edge of MOT specs on nearly every driveline part. 150lb Battery too. It was a neat project.

Assault n Battery is going to be another technical "what are the limits" kind of build. We are shooting for first car to 150mph in the 1/4 and maybe 200mph in the one mile, also first car to deploy a parachute, maybe 125mph in the 1/8th and a couple other milestones. Couple of sponsors that want to be part of that would be nice.

Sounds exciting. So, what are your plans for controller(s), motor(s), battery?

Edit' I see the comment on two warp 9's.

[John Metric]

Originally Posted by DIYguy

Sounds exciting. So, what are your plans for controller(s), motor(s), battery?
Edit' I see the comment on two warp 9's.

Netgain/Zilla/LiPo
More to follow

[Dustin_mud]

Yeah I would love some info on the batt pack, guys are giving me the want to race again....maybe after my crawler build

[John Metric]

Originally Posted by Dustin_mud

Yeah I would love some info on the batt pack, guys are giving me the want to race again....maybe after my crawler build

I call my line of LiPo packs "LiPo Seduction"
They are RC car batteries massively paralleled and series"ed".
I currently run a 90S6P arrangement that makes about 800 peak battery horsepower. You can see a bunch of photos on my facebook page.

[John Metric]

I was just thinking the photoshop is actually a five speed.
1.56:1
1.56*.78 = 1.22:1
1.00:1
0.78:1
0.78*.78 = 0.608:1