Asphalt Results 2005

[pro116]

Vector

5/27/05 Wisconsin Iternational Raceway

I finally got the vector out for the first time.Clutching,Gearing,and Jetting is all stock.I have a wahl skid in like nos-pro with a 10 5/8" track.

1st run-60ft didn't show up
1/8 mile et: 7.208
1/8 mph: 90.67
1/4 mile et: 11.69
1/4 mph: 106.11

The race got rained out after the first run.Noiw it's time to start tuning to see what it's got.The sled hook's hard it maybe lift's the ski's 1-2".

 

[turborx1ton]

ran this week end 1st time out need to try to hook up i dont know much about this proline gets out to at 1.55 60 and is almost sidways until half track yaaahoooo. lower the frt more and helped. got down to 9.61@145mph. running17 lbs with rear mount mcx. had 130's and went to 140's and gained 6 tenths how so i ordered bigger. ran 24/38 with 10 tooth. i ordered a clutch kit from jeff today as i had my mountian set up in it from this winter. there is alot more just need to get her tuned up.

 

[NOS-PRO]

Hey everyone - Went to W.I.R. Saturday, and went 2 rounds. I will post results after I pick up my new Diesel truck.

 

[NOS-PRO]

O.K. - W.I.R. 5/28/05
Weather - AWESOME!!!!!! 68 degrees with 30% humidity

1st time run - Tightened track, and set secondary spring to 70%. Tightened rear shock spring to max.
1.480 60ft. - 6.852 1/8mile @ 95.102mph - 11.109 1/4mile @ 112.156mph

2nd time run - same
1.508 60ft. - 6.924 1/8mile @ 95.155mph - 11.244 1/4mile @ 110.205mph

1st round - set secondary spring back to 60% (check out the 1/8mile)
1.471 60ft. - 6.837 1/8mile @ 95.050mph - 11.259 1/4mile @ 96.706mph
(I was way ahead of the other guy,. and didn't want to breakout. This would have been a near 10 second run.) Won 1st round

2nd round - same
1.499 60ft. - 6.867 1/8mile @ 95.333mph - 11.117 1/4mile @ 112.167
lost by .017 - other guy had a little better reaction time.

After all this, I believe I just moved into the 1st position due to others going out early each week.

 

[jtssrx]

NOS-PRO: Terry Why do you think you ET at the 1/8 was lower with a softer secondary?


I have an idea.

 

[NOS-PRO]

Well, I have been trying different percentages, and my home track likes the softer setting, so it don't spin off the line. I was even going to try a 25 top tooth gear, to keep the track from breaking loose.

 

[jtssrx]

A softer setting should make it spin more off the line unless you suck the belt. The softer the spring tension the faster the up-shift and probably more belt squeeze.

What secondary spring are you using? I would lower the engagement if your spinning out of the hole, or try making some suspension changes to get the skid to squat. I'd be looking to drop the 60 foot times into the 1.3's then you'd see some over all drops in your total et's.

You know all this though. Keep up the hard work and enjoy yourself!!!! I really want to see you win the points this year!!!!!!!

 

[BlueByYou2000]

The softer the secondary spring setting, the more prone it becomes to belt slip...BBY

 

[Srxspec]

The softer setting is letting the belt slip through the secondary not allowing it to be as aggressive off the line, hence the 60' times getting better. It also may allow the belt to travel further into the bottom of the secondary on top end, but I don't think that's the case because you weren't running the spring in a stiff setting to begin with.

Terry when it spins does it just spin or is it bucking up? Keep working with your rear skid. On launch you don't want it to "squat" hardly at all in my mind. Anytime spent where the sled isn't moving forward is wasted time. Anytime the suspension "squats" it's moving back and you're wasting time. With the green spring in there you have a pretty soft setting already. In order to drop the 60' times in the 1.3's I think it's going to take a set of Super Tips, they have a more aggressive profile off the start and 60' better than any other weight out there. Just my opinion though. Wish I could get out your way and help ya out for a weekend!

 

[Oak Hill]

Hi Terry,

Load that monster.

Have you tried a lower engagement rpm like was suggested above?

SRXSPEC suggested Super Tips - load that baby.

Terry - try the gearing change you mentioned.

I believe if you lug this monster, it will help eliminate Track Spin and you will go faster. Was planning on going to Milan this Saturday, but I have to work.

 

[BlueByYou2000]

Terry, I have some 40 g Supertips you can use if you want. Let me know...BBY

 

[pro116]

Matt are you coming this Friday?Jeff might also come with 2 turbo's.

 

[jtssrx]

The softer the secondary spring setting, the more prone it becomes to belt slip...BBY

That's not completely true, there comes a point where too much twist causes belt slippage because the secondary can't open because the secondary is just to tight. That will cause the belt to slip. In a drag race torsional twist is useless. It's the side pressure that you want. So you want a longer spring with little to no twist on it. All twist does is give you back shift. backshift is unnecessary. If your having problems with heat in your secondary "Caused by belt slippage" try the same settings with a shallower finish angle on your helix. This will allow the secondary to keep pressure on the belt.

 

[BlueByYou2000]

The softer the secondary spring setting, the more prone it becomes to belt slip...BBY

That's not completely true, there comes a point where too much twist causes belt slippage because the secondary can't open because the secondary is just to tight. That will cause the belt to slip. In a drag race torsional twist is useless. It's the side pressure that you want. So you want a longer spring with little to no twist on it. All twist does is give you back shift. backshift is unnecessary. If your having problems with heat in your secondary "Caused by belt slippage" try the same settings with a shallower finish angle on your helix. This will allow the secondary to keep pressure on the belt.

That goes without saying. Obviously if you twist the hell out of your secondary spring, its going to stay a lower gear ratio and will be more difficult to shift out. But a measly 10 degrees wont react they way you describe...BBY

 

[Srxspec]

In a drag race torsional twist is useless. It's the side pressure that you want. So you want a longer spring with little to no twist on it. All twist does is give you back shift. backshift is unnecessary.

Not necessarily true. If you get on a track with bumps on it or a snow track with loose snow in areas you will want a spring with torsional pressure as well. The torsional twist will keep the sled in the right "gear" when you hit loose snow or a bump going down the track and won't allow the belt to get sucked down into the secondary. The same principal also holds true for your holeshot as well. You still need the right combination of torsional pressure versus side pressure for the correct drag race setup. To say that torsional twist is useless in a drag race would be incorrect.