1. Welcome to the new SAOCA website. Already a member? Simply click Log In/Sign Up up and to the right and use your same username and password from the old site. If you've forgotten your password, please send an email to membership@sunbeamalpine.org for assistance.

    If you're new here, click Log In/Sign Up and enter your information. We'll approve your account as quickly as possible, typically in about 24 hours. If it takes longer, you were probably caught in our spam/scam filter.

    Enjoy.

    Dismiss Notice

Now I'm in for it.

Discussion in 'Modified Alpine' started by Aladin Sane, Nov 18, 2019.

  1. Barry

    Barry Platinum Level Sponsor

    Doug Jennings told me that the "sagging" problem with front suspension crossmembers was only an issue with Tigers (and Algers). According to Doug, the combination of the notches to accommodate the steering rack (loss of beam strength) and the increased engine weight of the Tigers resulted in the center of the crossmember slowly bending to the point that camber could not be properly adjusted. His approach to preventing the problem was to add reinforcement plates in key locations and to fully weld the seams in the crossmember (rather than stitch welds). He did not reveal how he repaired a crossmember that had already sagged.

    I am pretty sure that Joels comment "Start with the fwd. Spring mounts" referred to the front mounts for the rear suspension leaf springs which take all of the forward thrust loads during acceleration, at least half of the lateral loads during cornering and carry about half of the rear vertical loads. IMO, they are marginal for a "stock" Alpine, much less for a V8 Alpine.
     
  2. PROCRAFT

    PROCRAFT Donation Time

    Leaf spring mounts Is what I referred to and re welding the cross member is a given they crack everyware fulcrum pin pads,shock towers, upper shock mounts and sometimes where they bolt to the chassis, it doesn't take much to find the cracks. And as far as the leaf spring mts go it's a s...t job from the factory ad to how it's done there relying on spot welds and not much more to hold.it all together I put a horizontal doubler on mine on addition to welding up all the layers of sheet metal.
     
    Last edited: Nov 20, 2019
  3. Aladin Sane

    Aladin Sane Gold Level Sponsor

    Great discussion and I will put my mig welder to good use to make sure these areas are beefed up.

    I will continue to look to the collective wisdom of the forum to help me along with this project.
     
    Last edited: Nov 20, 2019
  4. Aladin Sane

    Aladin Sane Gold Level Sponsor

    Seller has confirmed that steering is by MGB rack as suggested by an observant poster here. Thanks
     
  5. 260Alpine

    260Alpine Silver Level Sponsor

    Could you get a picture of the steering rack install?
     
  6. Aladin Sane

    Aladin Sane Gold Level Sponsor

    I dont have the car in hand yet. When I do I will.
     
  7. 260Alpine

    260Alpine Silver Level Sponsor

    Thanks!
     
  8. PROCRAFT

    PROCRAFT Donation Time

    Barry. Exactly and if you had the floors off in that area you'd see what a really bad job is!
     
  9. PROCRAFT

    PROCRAFT Donation Time

    When I used a Midget rack and the B Arms I turned the body of the rack and machined pillow blocks for mounting ,I mounted the rack just like a Tiger.
     
  10. Aladin Sane

    Aladin Sane Gold Level Sponsor

    What are the groups thoughts on roll bars? I will want to add three point seat belts and being way to tall for this car to begin with at 6' 8", I think I would like the higher mounting position that a roll bar would give, plus, I may want to take it to a track day from time to time. Doing a little googling, it looks like Autopower is the most readily available option. What else have people done?
     
  11. PROCRAFT

    PROCRAFT Donation Time

    Build your own.
     
  12. Aladin Sane

    Aladin Sane Gold Level Sponsor

    My welding skills can make a weld pretty enough for reinforcing spring mounting plates under the car, the highest most visible part of the car, maybe not.
     
  13. PROCRAFT

    PROCRAFT Donation Time

    Probably what I should have said was I don't think much of the bars on the market most of if not all lean back. Not sure how that helps if you on your head, the one we built for the Tiger was verticle and followed the contour or the top bows and braced forward in addition to the rear gives a place for the passenger to hang on
    I'm taking the rear axle out of this car now to change the gear, I'll post a pic of the spring mounts to view
     
    Last edited: Nov 23, 2019
  14. PROCRAFT

    PROCRAFT Donation Time

    These are a little grainy but you get the idea this is all layered sheet metal that is
    spot welded together there is a small doubler that I'd also an afterthought that's welded to the chassis x frame trying to make up for the mistake that you can't see! There is a mod that some one sells to beef this up my opinion it's just a bandaid on a heart attack so to speak I just put a horizontal gusset on the one side and weld the whole deal up.
     
    Last edited: Nov 23, 2019
  15. PROCRAFT

    PROCRAFT Donation Time

  16. Aladin Sane

    Aladin Sane Gold Level Sponsor

    Thanks for the pics of the spring mount work.
     
  17. Ashfried

    Ashfried Silver Level Sponsor

  18. Aladin Sane

    Aladin Sane Gold Level Sponsor

    That is a good looking bar, but how does it mount? I doubt it would meet tech inspection for track day.
     
  19. Alpine 1789

    Alpine 1789 SAOCA President Diamond Level Sponsor

    The Mini roll bar looks like a really good option, if an effective way to mount it can be worked out!

    As a long time owner of a roll bar, I would like to weigh in on a couple of aspects of them. The first and most important it to remember that it will probably do nothing to protect you (at best) in a rollover. The windshield frame wouldn't provide any protection, so the damage line would be between the front of the car and the top of the roll bar, which almost certainly includes your head. I installed my roll bar because I wanted head restraints and that seemed like the best way to get them. (The other option, which I will probably go with on my V6, is aftermarket seats with head rests built in.). The other thing I like about a roll bar is that I think it would provide some protection in a T-bone crash, although I certainly could be wrong about that.

    One more thing for consideration: I had planned on buying an Autopower bar, since that seemed to be about the only option at the time. Their local representative was near my office and I paid them a visit. The guy did race prep on cars and told me he could make a custom bar for about the same price as the Autopower. I went that route and we sized it to just barely fit under the convertible top. We then installed a cross bar that is far sturdier than the one Autopower uses and I made head restraints that attached to the bar with muffler clamps. I looked to see if I could find a good photo of mine; this is the best I can do at the moment:

    IMG_1079.JPG IMG_1080.JPG
     
    Last edited: Aug 3, 2020
  20. Aladin Sane

    Aladin Sane Gold Level Sponsor

    I am thinking it would be a good idea to get a service manual for this car. Since the car is in pieces, I may want a guide for putting it back together. I see several after market ones as well as the factory workshop manual. Which one would any of you recomend?
     

Share This Page