Re: Launch opinion... videos...
[Re: dart_73_br]
#2438581
01/21/18 08:02 PM
01/21/18 08:02 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
Joined: Sep 2014
Posts: 4,457
Washington
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You need a two step. You need more RPM on launch. Front looks like it's doesn't have enough travel. In the dark it's hard to see the tire but it looks like you need more rebound dampening.
What clutch are you using.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2438608
01/21/18 08:41 PM
01/21/18 08:41 PM
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Joined: Jan 2003
Posts: 19,355 Las Vegas
Al_Alguire
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I Live Here
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Hard to tell much at all really to me. I see a ton of wheelspeed is about it, well and a lot of hopping. I noticed you start your burnout in the water, or well behind it with no smoke really at all. So I wonder one if you have an issue with water in the wheelwells Two tires are really not getting any heat at all if all the burouts are similar to that one. Three is the track prepped at all?
So here are some questions for you. What tire is on the car? DO you have a linelock? If you do what gear are you trying to do your burnout in? MOre info on the car like powerplant rear gear etc..
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Launch opinion... videos...
[Re: Al_Alguire]
#2438617
01/21/18 08:54 PM
01/21/18 08:54 PM
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Joined: Aug 2005
Posts: 637 Sao Paulo, Brazil
dart_73_br
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Thanks for the answers. Here more info:
318ci ~300hp on it. 4.88 gears. 3speed column shift.3300lbs Car. 28x9x15 old slick Hoosiers. E100 fuel. Ceramic clutch. Launching on 3000rpm. Have option to enable two step of needed. Prepped track.
Next race will be different as I installed some progressive dry nitrous.150 shot going from 3000 50% - 5000 100%.
But still want to hear your opinion on the launch. Thanks.
Last edited by dart_73_br; 01/21/18 09:02 PM.
1973 Brasilian Dart E100, boosted 390"
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2438652
01/21/18 09:40 PM
01/21/18 09:40 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
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Posts: 4,457
Washington
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Thanks for the answers. Here more info:
318ci ~300hp on it. 4.88 gears. 3speed column shift.3300lbs Car. 28x9x15 old slick Hoosiers. E100 fuel. Ceramic clutch. Launching on 3000rpm. Have option to enable two step of needed. Prepped track.
Next race will be different as I installed some progressive dry nitrous.150 shot going from 3000 50% - 5000 100%.
But still want to hear your opinion on the launch. Thanks. Use the two step. You need to over rev the engine for the ROm drop on the three speed. What clutch and what shocks?
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Launch opinion... videos...
[Re: madscientist]
#2438663
01/21/18 09:48 PM
01/21/18 09:48 PM
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Joined: Aug 2005
Posts: 637 Sao Paulo, Brazil
dart_73_br
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Use the two step. You need to over rev the engine for the ROm drop on the three speed.
You mean I ned to launch at a higher RPM ? i.e 4000rpm? ant his will drop to 3500 RPM? What clutch and what shocks? Both are local brands.... single ceramic clutch. Shocks doesn't has adjustments. I think I need to upgrade to double adjustment ones right for having control over that bounce?
Last edited by dart_73_br; 01/21/18 09:50 PM.
1973 Brasilian Dart E100, boosted 390"
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2438682
01/21/18 10:06 PM
01/21/18 10:06 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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master
Joined: Sep 2014
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Washington
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Use the two step. You need to over rev the engine for the ROm drop on the three speed.
You mean I ned to launch at a higher RPM ? i.e 4000rpm? ant his will drop to 3500 RPM? What clutch and what shocks? Both are local brands.... single ceramic clutch. Shocks doesn't has adjustments. I think I need to upgrade to double adjustment ones right for having control over that bounce? IMO it needs to come out at a higher RPM. You could use double adjustable shocks. The clutch is what's going to be hard to control. You also need to shift at a higher RPM because the spits are so big between the gears.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2438777
01/22/18 12:02 AM
01/22/18 12:02 AM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
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master
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Charlotte, North Carolina
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You need a better burn out, and higher launch rpm. Try 3,500, then 4,000. What weight flywheel did you put in. If you already have a 30 lb. wheel, a rag disc will help soften the impact and let the engine stay at a slightly higher rpm. You don't have enough engine to require a ceramic clutch. I'm guessing once you get the launch rpm right, you will find out that you need the higher ladder bar setting. I didn't notice any real separation.
[image][/image]
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Re: Launch opinion... videos...
[Re: sgcuda]
#2438793
01/22/18 12:36 AM
01/22/18 12:36 AM
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Joined: Nov 2005
Posts: 690 New Hampshire, USA
oldiron
mopar
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mopar
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New Hampshire, USA
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Yes, it looks like it could use line lock (really bad), tires, shocks, and need some clutch slip. If the pressure plate is non-adjustable you might look at something like this: http://clutchtamer.com/
66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge New New Best: 10.56 @129 68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up https://www.youtube.com/watch?v=T4jDLKwd9Gs
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Re: Launch opinion... videos...
[Re: sgcuda]
#2439223
01/22/18 09:53 PM
01/22/18 09:53 PM
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Joined: Aug 2005
Posts: 637 Sao Paulo, Brazil
dart_73_br
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I didn't notice any real separation. Is it good to have the body separation? Heard that with ladder bars the car won't squat right?
1973 Brasilian Dart E100, boosted 390"
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2439252
01/22/18 11:11 PM
01/22/18 11:11 PM
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Joined: Jul 2004
Posts: 19,317 State of confusion
Thumperdart
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I Live Here
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It looks like the rear bounced, spun and pulled to the right in the 1st video...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2439428
01/23/18 07:49 AM
01/23/18 07:49 AM
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Joined: Oct 2015
Posts: 192 GravataĆ, RS, Brazil
360tripleblack77
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Hey Fernando, watching your videos looks like that shock rebound is too loose. Rear shocks can't keep tires planted at ground and that's causing tire bouncing. Maybe ceramic clutch can be another factor for cause this. As you said that you are using old tires, I would start changing tires for brand new tires like 28x10 or 28x10.5.
Good luck and keep us informed!
'77 Brazilian Dodge Charger R/T - Street Car Footbrake, Pump Gas, SB Mopar 360" N/A 3300lbs, Leaf Spring + Assassin Bars Best 1/8 mile ET 1.50 60' / 4.31 330' / 6.73@102.54mph
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Re: Launch opinion... videos...
[Re: 360tripleblack77]
#2439436
01/23/18 09:02 AM
01/23/18 09:02 AM
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Joined: Aug 2005
Posts: 637 Sao Paulo, Brazil
dart_73_br
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OP
mopar
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Hey Fernando, watching your videos looks like that shock rebound is too loose. Rear shocks can't keep tires planted at ground and that's causing tire bouncing. Maybe ceramic clutch can be another factor for cause this. As you said that you are using old tires, I would start changing tires for brand new tires like 28x10 or 28x10.5.
Good luck and keep us informed!
Hello Diego, yes, looks like there are some consensus here. I need new tires 28x10.5 and some work with the rear shocks to solve that bounce. Additionally will work to change that 3speed to an automatic transmission. Loosing to much time between gear changes with this transmission.... Thanks for all imput guys! Will keep you informed on next passes...
1973 Brasilian Dart E100, boosted 390"
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2439442
01/23/18 09:54 AM
01/23/18 09:54 AM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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Hey Fernando, watching your videos looks like that shock rebound is too loose. Rear shocks can't keep tires planted at ground and that's causing tire bouncing. Maybe ceramic clutch can be another factor for cause this. As you said that you are using old tires, I would start changing tires for brand new tires like 28x10 or 28x10.5.
Good luck and keep us informed!
Hello Diego, yes, looks like there are some consensus here. I need new tires 28x10.5 and some work with the rear shocks to solve that bounce. Additionally will work to change that 3speed to an automatic transmission. Loosing to much time between gear changes with this transmission.... Thanks for all imput guys! Will keep you informed on next passes... A quicker change out would be upgrading to a 4 speed. You don't need a high dollar Hemi box. A normal 23 spline will be good for what you are trying to accomplish. Will probably bolt right in, too. I would have the gears and sliders slick shifted, or possibly lugged at Liberty to make your shifts quicker.
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Re: Launch opinion... videos...
[Re: dart_73_br]
#2439505
01/23/18 01:14 PM
01/23/18 01:14 PM
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Joined: Oct 2014
Posts: 103 Washington
weedburner
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member
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Washington
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Hello Diego, yes, looks like there are some consensus here. I need new tires 28x10.5 and some work with the rear shocks to solve that bounce. Additionally will work to change that 3speed to an automatic transmission. Loosing to much time between gear changes with this transmission....
Thanks for all imput guys! Will keep you informed on next passes... The root of your problem is clutch control. Hard hitting clutches require more shock control to prevent a bounce. If you soften the hit of that clutch, there's a good chance that you won't need you won't need new shocks or new tires. Add something like the ClutchTamer to control that hit and you will want to upgrade to a 4spd instead of an automatic.
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