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Projects Northwest Vintage Dragster Group Build.

Discussion in 'Traditional Hot Rods' started by rottenleonard, Oct 22, 2016.

  1. wuga
    Joined: Sep 21, 2008
    Posts: 356

    wuga
    ALLIANCE MEMBER

    Not to steal this excellent thread, but it has been mentioned twice. At first with the rear end mounts and the pumpkin cover, it was felt that an anti rotation device wasn't necessary, but that all changed in the planning conversation last night. It will be there.

    Warren
     
  2. BowTieBill
    Joined: Apr 10, 2016
    Posts: 4

    BowTieBill

    Any idea when you will be in Spokane?
     
  3. BowTieBill
    Joined: Apr 10, 2016
    Posts: 4

    BowTieBill

    Nothing better than an old Bridgeport! !
     
  4. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    Honestly we haven't given it much thought. We will likely make our shakedown runs in walla walla, and we will be in woodburn on the weekend of the 25th of june (that's my birthday!)

    Is there any rule as to how far the bar that holds the steering wheel needs to be over the drivers knees? The hole that we are going to need to get in and out of is looking a little tight....lol
    20170103_213157.jpg
     
  5. Casual 6
    Joined: May 25, 2008
    Posts: 241

    Casual 6
    Member
    from Great NW

    Woodburn in June sounds like a good goal.

    No rule to my knowledge on the steering wheel placement. I know the first year I ran my car, my steering was just a straight shaft like yours. It was too low, hit my knees and was a pain in general. My fix was to put a u-joint in the shaft, and mounted a pillow block on the knee bar to tilt the steering wheel up. Didn't take too much of a tilt to open up the drivers cockpit.
     
  6. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    Ok i think we will build the roll cage and then finalize the placement of that bar.
     
  7. rooman
    Joined: Sep 20, 2006
    Posts: 4,052

    rooman
    Member

    It just needs to be over the driver's legs so you could move yours forward at least 6" and still be good.

    Roo
     
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  8. Old6rodder
    Joined: Jun 20, 2006
    Posts: 2,487

    Old6rodder
    ALLIANCE MEMBER
    from SoCal
    1. HA/GR owners group

    The knee bar definition I get at Bako is "enough to keep your legs inside when you go greasy side up". Same concept as the arm straps. In our HAMBsters most of our knees'd hit our chest before our ankles cleared the bar (even if my knees COULD make it that far up :rolleyes:), and the techs call it that way.

    I've only seen one guy called on it (and the call was technically wrong in my opinion), but the (young) tech called it as not actually covering his knees in fact, rather than whether they could escape his cage (which they couldn't) in an overturn.

    And in truth, getting in and out of mine became enough of a pita that it was one of several considerations leading me to finally remove the front hoop I'd added, and forego formal NHRA events.
     
  9. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    That all makes good sense, i just wanted to walk the like on accessibility and still be very safe. It would really take the fun out of it if we get someone hurt.
     
  10. Old6rodder
    Joined: Jun 20, 2006
    Posts: 2,487

    Old6rodder
    ALLIANCE MEMBER
    from SoCal
    1. HA/GR owners group

    Yes, the cage designs these days certainly do provide excellent impact protection. No argument there at all. And racing at fully safety staffed events and venues should be fine.

    My own reservation regarding exiting from an upside down (or even partially that way) position in current NHRA cage designs is that your only egress requires a nearly vertical line up, there's no way out to the sides. This renders you trapped in any position blocking that line (as well as adding to such a situation the time it takes for the car to be righted enough for you to be freed).

    I have excellent faith that the emergency crews'll do their best (plus admiration for what they accomplish), and faith in my fire suit, but I have no intention of relying solely on these. It's only my personal preference of course, but as I do race at smaller, and occasionally less safetied venues that's not a situational possibility I choose to place myself in any longer.
     
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  11. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    Tacos, tacos, TACOS!
    20170110_173418.jpg
    Last night we fabbed up a hoop for the front of the seat.

    20170110_185606.jpg

    Then started building the trans tunnel. We wanted the back if the tunnel to be flat to help with getting in and out of the thing.
    Started with this piece as a mockup to get some measurements.
    20170110_191301.jpg
    Then bent up another one with sides,

    20170110_201112.jpg

    The filler panels at the front will be challenging.
    20170110_210722.jpg

    Here is the second attempt, it is starting to show some potential. I think one more try and it will work.
    20170110_210715.jpg

    Meanwhile Randy and Wayne worked up some driveline hoops and and the verticle braces below the rear shoulder hoop.
    The rear driveline hoop will bolt onto the rear axle anti rotation bracket.
    20170110_210734.jpg
     
  12. Old6rodder
    Joined: Jun 20, 2006
    Posts: 2,487

    Old6rodder
    ALLIANCE MEMBER
    from SoCal
    1. HA/GR owners group

    You guys sure do some clean work. :cool:
     
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  13. Crosley
    Joined: Mar 3, 2001
    Posts: 1,035

    Crosley
    Member
    from Aridzona

    Is a transmission shield required by rules? I would suggest a shield since a trans failure with parts coming out of the case , would do lots of damage. Low RPM does not matter.

    I've had transmissions fail on the trans dyno at low RPM. T-400 blew off a section from the top center of the case. I've seen lots of blown apart transmissions in 40 years
     
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  14. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member



    The HP on one of these is relitively low, something coming threw the case just isn't likely.
     
  15. CrkInsp
    Joined: Jul 17, 2006
    Posts: 513

    CrkInsp
    Member
    from B.A. OK

    I have two questions:
    1. How wide is your frame, lower rails?
    2. How far out do you have the fire wall (axle Cl to fire wall)?
    Thanks
     
  16. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    The outside is 30 inches wide, could be 2" narrower,
    Axle to firewall is 47", could be 4" shorter.
     
  17. Crosley
    Joined: Mar 3, 2001
    Posts: 1,035

    Crosley
    Member
    from Aridzona

    Not likely? LOL

    As I posted: In 40+ yrs of automatic transmission work. (I Worked on my first thm400 in the mid 1970s ) I have seen low speed (RPM ) parts failures that tossed parts thru the case. It is RPM where "old parts" fail. You are using a transmission with parts that are decades old & have 100 - 200 k miles on them? It is wise to use a transmission shield.

    Oh, do not toss that trans into neutral after you cross the finish line. You may be eating parts. In neutral & at speed, the driveshaft becomes the input driving power, not the engine. You will over speed the internal parts via the planetary gear set . And even if "low horse power & not likely" the drum may explode
     
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  18. Crosley
    Joined: Mar 3, 2001
    Posts: 1,035

    Crosley
    Member
    from Aridzona

    A low power application with a stock case powerglide that blew up the drum. SFI bell housing & a shield was in use too. I do not want anyone hurt in this sport where safety equipment is available
     

    Attached Files:

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  19. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    I hear you, but I'm betting he had a little more than 225 hp there.
     
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  20. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    Worked on the anti rotation braket last night, after a quick websearch i found a diagram for the 9 inch that had the X and Y coordinates listed for each bolt hole of the housing, what a time saver that was.....thanks Al Gore.
    20170119_133400.jpg

    After plotting the holes in cad i was able to knock out a bracket on the plasma cam that will allow access to the u-joint nuts.
    20170119_151122.jpg
    20170119_151544.jpg

    Then the side gussets with tabs that will mount it to the cross member were cut. The gussets were made from 3/16"
    20170119_192052.jpg
    20170119_192114.jpg

    Next up was welding in some slugs into the bottom of the rear drive line hoop.
    20170119_204726.jpg
    This was to allow mounting onto the rotation bracket, i think it will need to be removable in order to get the driveline out. Unfortunately the bolt heads are hitting on the crossmember sooo that will need a little reworking.
    20170119_210227.jpg
    While I was goofing with that this happened serial number #0002 now we can foul things up twice as fast![
    20170119_212226.jpg
     
  21. Third DodgeBrother
    Joined: Apr 18, 2009
    Posts: 187

    Third DodgeBrother
    Member

    Thanks for the drawing. Your thumb will live forever on the net!
     
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  22. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    That's the kind of fame I'm noted for.
     
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  23. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    They had to suffer threw my cooking last night.
    20170122_122435.jpg
    We pushed on on the trans tunnel, this is were we left off last time
    20170110_210715.jpg
    After some adjustments and the addition of a flange.
    20170124_194400.jpg
    It's amazing how time consuming this crap is, but I'm hoping on the next car we will just be able to hit the cut button on the plasma cam, fold it and install.
    20170124_200257.jpg
    When we tear the car apart for finishing we will replace the screws with solid buck'd rivets.

    Also 002 made some progress last night, we had the safety team on it...
    20170124_192709.jpg
    20170124_210652.jpg
     
  24. DDDenny
    Joined: Feb 6, 2015
    Posts: 13,652

    DDDenny
    Member
    from oregon

    Interesting spelling of Fremont on that poster huh Marty!
     
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  25. southcross2631
    Joined: Jan 20, 2013
    Posts: 3,896

    southcross2631
    Member

    On your bar that goes across to hold your steering. I worked on an alcohol funny car in the 70's and it had pins in both ends of the bar. you could take the pit pin out of one end and fold the steering shaft out of the way The shaft had a joint in it. Made getting in and out a lot easier. Passed tech at Gatornationals , so nhra considered it safe. Saves getting the cherry picker to get your driver in and out.
     
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  26. Old6rodder
    Joined: Jun 20, 2006
    Posts: 2,487

    Old6rodder
    ALLIANCE MEMBER
    from SoCal
    1. HA/GR owners group

    Sounds like an idea. How obvious was that design for emergency crews?
     
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  27. D.N.D.
    Joined: Aug 15, 2012
    Posts: 1,385

    D.N.D.
    Member Emeritus

    You might think about a split tube for your driveshaft guard, and cover the u joints and all

    With this set up nothing can come out and get your stuff if you know what I mean

    That is what they use in v drive boats

    DND
     
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  28. rottenleonard
    Joined: Nov 7, 2008
    Posts: 1,970

    rottenleonard
    Member

    I think we will monkey see monkey do like casual 6's car and have a upper cover inside of the driveline hoops.
    Seat Bars.jpg

    Looks like a good idea especially with how short the driveline will be.

    The first idea we had involved some 5" well casing making a clamshell full coverage thing but it looked pretty farmered up....
     
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  29. old sparks
    Joined: Mar 12, 2012
    Posts: 414

    old sparks
    Member

    4 inch emt ( electrical metallic tubing ) split. available in 10 ft. lengths at a supply house about .030 wall thickness
     
  30. D.N.D.
    Joined: Aug 15, 2012
    Posts: 1,385

    D.N.D.
    Member Emeritus

    I would use something a lot thicker than .030 !!!!!!!!!

    DND
     

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