Testing with TD GPS/Dragy

[DMCTurbo]

Hit 2 season goals I set for myself today.

1st was 130mph in 1320 with me on the seat and 2nd was 140mph top speed.

 

[KnappAttack]

@Fleecer suspected I was slipping the XS 825 belt with 82gr in the primary so I tightened my secondary to 6-2 and my rpm dropped to 82-8400 rpm. A sure sign that he was correct. I kept pulling weight all day and the sled kept getting faster.

Clutching ended as follows;

Dalton black bronze primary spring
Dalton DTYA1s at 76grams
Dalton black orange at 6-2
Stock 35 helix
XS 825
290 pump gas tune

I knew something wasn't right with you running 82G in the primary. Is that a version #1 B/O as well? If it is, I'd switch to a V2 B/O. V1 is just not enough side pressure and too weak.

I have to run a V2 up at 90 wrap on hi-torque rollers to keep slippage at bay in the secondary. Or use a Cat Dalton white or Purple/Lime. at 9-1 to 9-3 even 0-1. It takes a bit of spring pressure to hold the belt in the secondary on these bigger tunes.

Congrats on hitting your goals.

 

[Sledroll]

Hit 2 season goals I set for myself today.

1st was 130mph in 1320 with me on the seat and 2nd was 140mph top speed.

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So were you also able to out run your bud on the blue winder ?
The ice must have been ideal , in addition to the clutching changes ?

 

[DMCTurbo]

So were you also able to out run your bud on the blue winder ?
The ice must have been ideal , in addition to the clutching changes ?

We drag raced 3000 feet and we were 1/2 a ski apart. It's crazy how close our 2 sleds are. Totally different clutching between the 2 sleds. My buddy's speedo was reading 145 mph and my dragy read 140mph.

 

[DMCTurbo]

I knew something wasn't right with you running 82G in the primary. Is that a version #1 B/O as well? If it is, I'd switch to a V2 B/O. V1 is just not enough side pressure and too weak.

I have to run a V2 up at 90 wrap on hi-torque rollers to keep slippage at bay in the secondary. Or use a Cat Dalton white or Purple/Lime. at 9-1 to 9-3 even 0-1. It takes a bit of spring pressure to hold the belt in the secondary on these bigger tunes.

Congrats on hitting your goals.

Yes you were right when you said something was off. I will invest in the new version spring for next year. Thanks for the advice over the years. Much appreciated.

 

[DMCTurbo]

 

[sledding rocks]

congratulations on these speeds , have u tried max 19 or 20 ?

 

[Crossfire12]

We drag raced 3000 feet and we were 1/2 a ski apart. It's crazy how close our 2 sleds are. Totally different clutching between the 2 sleds. My buddy's speedo was reading 145 mph and my dragy read 140mph.

It’s all in gearing, we’re the gears the same?

 

[DMCTurbo]

congratulations on these speeds , have u tried max 19 or 20 ?

Thank you. I haven't tried Max 20 yet. I'm still running the stock pump so I don't have Max 19.

 

[DMCTurbo]

It’s all in gearing, we’re the gears the same?

Same gears I think.

 

[sledding rocks]

Thank you. I haven't tried Max 20 yet. I'm still running the stock pump so I don't have Max 19.

to run max 20 safely on 94 long distance u would need pump and fuel reg set at 48 psi , alittle more extra hp . lol , the 22/37 gearing is a great combo for speeds , these same setup were seeing also over the 140 mph mark with Tapp clutching and stock secondary ,

 

[DMCTurbo]

to run max 20 safely on 94 long distance u would need pump and fuel reg set at 48 psi , alittle more extra hp . lol , the 22/37 gearing is a great combo for speeds , these same setup were seeing also over the 140 mph mark with Tapp clutching and stock secondary ,

Max spool 17 is such a great safe tune I think I'm just going to stay with it. I've seen what can happen when you keep pushing more and more boost.

 

[Doc Harley]

Great read, DMC.... congratulations

 

[DMCTurbo]

Great read, DMC.... congratulations

Thanks. Have come along way over the years.

TikTok - Make Your Day

 

[NYTurbo]

If your going to be running 3000 feet WOT I’d put a bigger pump in it to be on the safe side.