1974 Kammback-Grandmas Drag Car

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Re: 1974 Kammback-Grandmas Drag Car

Postby Grandmasvega » Sat Jan 07, 2017 6:18 pm

spencerforhire wrote:Decent delay box, but if you bought it used, check all the outputs thoroughly when you first hook it up. The internal relays can be damaged from improper wiring or components(shorted out trans brake solenoids are common). I scored the nearly new damaged Mega 450 I use in my drag car as a straight swap for my ancient Dedenbear RTD-7. Trans brake output was fried, but they have an extra relay on board designated SFO(selectable function output) that can be configured as trans brake. Someday I will take it apart and solder in a new $5 relay to make it fully operational again.


Good to know. Ill check it with a multimeter monday. I was going to buy a 450 then I saw this one on ebay after I already bought an old dedenbar. Can you setthe sfo to engage a half second after the transbrake? Like if I wanted to set the sfo to contol the nitrous so it would delay it a half second after the brake releases to give the tire some time to recover.
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Re: 1974 Kammback-Grandmas Drag Car

Postby spencerforhire » Sun Jan 08, 2017 8:26 am

400 is a little different from the 450; I will let you decrypt the instructions-
http://www.racedigitaldelay.com/pdfs/in ... 300400.pdf
There are so many ways to configure the outputs, I'm sure you will find something that works. With these boxes, your imagination is the only thing that limits what you can make them do.
My old RTD-7 served me well for 4 seasons,but it was a "one trick pony"; Now I have the Mega450 control everything- trans brake, throttle stop, shift RPM, plus it does RPM logging. Once I get around to replacing the one bad relay, I will also have starting line control(activates the throttle stop while the trans brake is on). But NHRA doesn't allow a tach input to a delay box in Super Gas, so I lose the shift and data log when I go to a Divisional event. Apparently, there is a way to modify a delay box to act as a traction control(by limiting throttle opening), which is not allowed.
The "fleet"-
77 Vega Estate wagon- project(someday)will have TPI305/T-5, S-10 spindles/axles
72 Vega HB Drag Car -383/'Glide/9"(9.35@146.19)(5.94@117.28 1/8th)
76 Vega GT- 400/4spd/9" retired from active duty(rusty)
03 Silverado 2WD ex.cab (work truck/parts hauler)
04 Silverado 2WD ex.cab (retired)
06 Haulin' 20ft enclosed car transporter
93 Suburban- 350/4L60(retired)
00 Saturn SW2- wife's car
01 Saturn SC2- younger son's project
00 Saturn SL2- daughter's car
98 Saturn SW2- spare
and 3 more Saturn "parts cars"
Note- the very act of listing all of these has made me realize I have some kind of problem.....

Visit http://www.spencerforhire.ca
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1972 Chevrolet Vega Hatchback

Re: 1974 Kammback-Grandmas Drag Car

Postby Grandmasvega » Sun Jan 08, 2017 11:57 pm

spencerforhire wrote:400 is a little different from the 450; I will let you decrypt the instructions-
http://www.racedigitaldelay.com/pdfs/in ... 300400.pdf
There are so many ways to configure the outputs, I'm sure you will find something that works. With these boxes, your imagination is the only thing that limits what you can make them do.
My old RTD-7 served me well for 4 seasons,but it was a "one trick pony"; Now I have the Mega450 control everything- trans brake, throttle stop, shift RPM, plus it does RPM logging. Once I get around to replacing the one bad relay, I will also have starting line control(activates the throttle stop while the trans brake is on). But NHRA doesn't allow a tach input to a delay box in Super Gas, so I lose the shift and data log when I go to a Divisional event. Apparently, there is a way to modify a delay box to act as a traction control(by limiting throttle opening), which is not allowed.


From what I understand the two are very similar. Main reason I went with the mega box was for the shift control. Ive read the instructions thoroughly but still am not sure if I can use one of the throttle stop channels to delay nitrous or maybe the other output youre talking about on a slightly longer delay. The 400 also rpm logs. From what I understand the main difference from 400 to 450 was backlit keys and a few creature comforts.
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Re: 1974 Kammback-Grandmas Drag Car

Postby Grandmasvega » Tue Jan 10, 2017 1:02 am

Couple of boxes showed up at my door today. :D
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Re: 1974 Kammback-Grandmas Drag Car

Postby 6D9 » Tue Jan 10, 2017 2:25 am

Grandmasvega wrote:Couple of boxes showed up at my door today. :D
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Awesome man! Bet you are stoked
72 Vega GT...406 sbc..TH700R4...3.42 gear...235/60/15 MT DR's....11.54 at 118.6..Dad's car
72 Vega GT...4cyl..4 speed..all stock
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Re: 1974 Kammback-Grandmas Drag Car

Postby Grandmasvega » Tue Jan 10, 2017 4:26 pm

6D9 wrote:
Grandmasvega wrote:Couple of boxes showed up at my door today. :D
rps20170109_205445.jpg

rps20170109_205555.jpg


Awesome man! Bet you are stoked


Beyond stoked. Lol. Nicest rear end I've ever owned. Been busy at work so cant wait to bolt it all together. Not going to paint it until I get it mounted. Wrinkle black. Debating on whether to mount calipers on front or back of axle.
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Re: 1974 Kammback-Grandmas Drag Car

Postby Grandmasvega » Wed Jan 11, 2017 1:47 am

Not too happy with how the pads dont sit all the way on the rotors, but overall, this thing is tits!
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Re: 1974 Kammback-Grandmas Drag Car

Postby Smiley » Tue Feb 14, 2017 1:26 am

Monzamouse now offers raised 3 hole upper control arm brackets ! :th:

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