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Everything posted by Dunelover

  1. Dunelover

    Shock Preference for Mid Engine V-8 Car

    I suggest you talk to Mark at Mark's Sandtrans in Forrest Grove. He set up my Smith 2 seater
  2. Dunelover

    F11 topcoat

    Had my RV ceramic coated. expensive but looks amazing
  3. Dunelover

    Pbs cable shifter

    I hear they are available again from Rancho.
  4. Dunelover

    So glad this genius is our Govenor

    Do you really think a refinery wants to shut down and lose money?
  5. Dunelover

    So glad this genius is our Govenor

    Last factor, Supply and Demand......
  6. Dunelover

    Megasand trans styles

    3 speed + Reverse?
  7. Dunelover

    Two Seat Sandcar Length

    Joe Fab Sand Squirt?
  8. The A/C compressor in my diesel MH seized up solid. So I want to take it somewhere that does honest work at a fair price and most importantly can accommodate large Motorhomes in Orange County. Access to the compressor is simple as well as the dryer and hose connections. Rick
  9. Dunelover

    Dash A/C in DP MH Seized - Where to go in OC

    Thanks for the feedback!
  10. Dunelover

    Joke of the day

  11. Dunelover

    Ball Bearing Billet shifter for PBS and S4 S4D

    Thanks for the clarification, makes sense. I was told at the time I could buy either. I went with the Haggert based on others who said it worked much better than my old Mendi.
  12. Dunelover


    What # Sweet Steering Servo do most people use. My application is for a Black Widow and my steering is a little too heavy for my taste
  13. Dunelover


    Well.... I didn't know so I went with HONDO's recommendation. (over a year ago). Maybe a little "firm" for dunning but feels good on a run to Duner's Dinner at 70-80
  14. Dunelover

    Ball Bearing Billet shifter for PBS and S4 S4D

    Gee I wonder why Weddle just sent me and I installed their shifter with a spring in it. Also I did switch the reverse lever to the right side.
  15. Dunelover

    Any buggy guys going to be down there this week?

    2/27-3/5or+ pad 3 or 5
  16. Dunelover

    Relay info

    The Relay/fuse package was not cheap, but everything in it was top quality, The EATON block, the relays, the top quality XLPE wiring. I know (from experience) I would have spent more time putting the block together than my time is worth. All the wire in the harnesses supplied had plenty of length (3ft ea). Rather than just splicing in the wires into my harness I ran all the relay wires, trigger wires and fused connectors to their termination points; Disassembling all the weather-pak connectors and shit canning the old wires https://www.ebay.com/itm/Universal-Waterproof-Relay-Fuse-Distribution-Box-Cooper-Bussmann-w-Ground-Block/181979463677?hash=item2a5ed23ffd:g:4S4AAOSw-kdXxEi4:sc:USPSPriority!92845!US!-1:rk:1:pf:0
  17. Dunelover

    Relay info

    Funny I just went thru the same thing. I had the best correct waterproof bosch relays but the connectors themselves were the problem. The trigger wire from the computer failed and the fuel pump would not run. We made a jumper in the dunes and continued the ride. The next day the trigger wire to one of the fans failed on the ride to Duners Diner. What I suspect is the harness was built with little or no flexibility. My decision was to replace it all nd eliminate future potential problems. I bought this pre-wired waterproof relay/fuse setup off ebay. I had done one of these bare before on another car and it takes a long time to wire them from scratch. I wasn't going to go thru that again. This waterproof set-up has 5 / 30amp relays with fuses and 5 additional fused circuits for your choice . I ran all new trigger wires to the ECU, and re-wired all new to the Oil cooler fans, Right Fan, Center Fan and Fuel pump (left fan comes on at start-up with the separate 30 second delay relay under the dash). I used one of the fuses for the fuel gauge sender /gauge. The remaining circuit is still available for future use. Took about three afternoons but everything is now sleeved & shrink wrap sealed . I expect no more problems and I still have additional circuits available for future uses. NOTE: This picture is without the cover. DL
  18. Dunelover

    Anyone Have An Amazing Mattress?

    We ordered one of these. Should be arriving soon. Made prefect sense to me to be able to customize. https://reverie.com/products/mattresses
  19. Dunelover

    Grade 8 or Grade 5 bolts

    Mark’s Standard Handbook for Mechanical Engineers lists Grade 5 fasteners as 120 ksi fasteners. This means the tensile strength is 120,000 lbs per square inch. It also lists Grade 8’s as 150 ksi fasteners meaning the tensile strength is 150,000 lbs per square inch. Also, the ultimate shear strength of a fastener is typically about 60% of its ultimate tension strength. So given a certain diameter (cross-sectional area) and strength rating, someone can figure out how much load that fastener can carry in both tension and shear. Let’s look at an example of where grade 5 and grade 8 bolts are subjected to single shear loads (winch plate reference). Using a .250-inch diameter grade 8 fastener gives you the following shear capability: A = Cross-sectional area of the fastener size (since bolt bodies/shanks have circular cross-sections, use area of a circle) = Pi x r2 where R (radius) = .250/2 = .125, therefore A = Pi x (.125)2 = .0491 square inches (in2) Capability in shear = 91,000 lbs / in2 x .0491 in2 = 4468 lbs Using the same .250-inch diameter grade 5 fastener results in the following: Capability in shear = 75,000 lbs / in2 x .0491 in2 = 3683 lbs That’s a difference of over 750 lbs or over 1/3 ton. In this example you can clearly see that using a grade 8 fastener has a superior advantage over the grade 5. Therefore the result is if someone is using grade 5 bolts in a shear application like the winch plate example, they will fail almost 800 lbs earlier. There’s an argument that grade 8’s are more brittle than grade 5’s and that’s why you shouldn’t use them. Well, first you need to understand what the term “brittle” really means. Brittleness in bolts is defined as failure at stresses apparently below the strength of the bolt material with little or no evidence of plastic deformation. Typically, fasteners are not brittle below 180 ksi ultimate tensile strength. Grade 5’s have an ultimate tensile strength of 120 ksi and a grade 8 fastener has an ultimate tensile strength of 150 ksi. This is why brittle is a relative term. Nearly all fasteners are considered ductile except some made from PH 15-6 Mo, 17-4 PH and 17-7 PH. Going back to the D-ring on the face of the bumper example, you would want to know its tensile carrying capability. Calculating the tensile capability is not as easy as shear since the thinnest portion of the bolt is at the minor diameter of the threads (bottom of the thread “V”). So you need to know the nominal minor diameter of that particular fastener. That’s where military specification MIL-S-8879C comes in. It is titled “Screw threads, controlled radius root with increased minor diameter, general specification for”. It lists that and a lot more for almost all possible fasteners. MIL-S-8879C lists the nominal minor diameter of a .2500-28-UNF at .2065 inches. We can now calculate the A (area) of the cross-section: A = Pi x r2 = Pi x (.2065/2)2 = .03349 in2 Grade 8 bolt capability in yield (stretch) = 130,000 lbs / in2 x .03349 in2 = 4354 lbs minimum Grade 8 bolt capability in tension (failure) = 150,000 lbs / in2 x .03349 in2 = 5024 lbs minimum Grade 5 bolt capability in yield (stretch) = 92,000 lbs / in2 x .03349 in2 = 3081 lbs minimum Grade 5 bolt capability in tension (failure) = 120,000 lbs / in2 x .03349 in2 = 4019 lbs minimum Again, you can see that the grade 8 will support over 1000 lbs more or a 1/2-ton more. But there’s something more important to note. The grade 5 fastener has already reached its ultimate load and FAILED BEFORE the grade 8 starts to yield or stretch. Therefore, the argument that you should not use grade 8’s because they are more brittle than grade 5’s is not a true statement in most applications. Toughness is an important feature of a fastener. It is the opposite of brittleness and gives you an idea of how it will handle abuse without being damaged and eventually weakening the fastener or can cause fatigue to appear much earlier than normal. One way to “measure” toughness is by looking at the hardness rating of a fastener. The higher the number (Brinell, Rockwell …) the harder the material is and the tougher it is to damage. According to Marks’ Standard Handbook for Mechanical Engineers, Grade 5’s typically have a core Rockwell hardness of C25-C34 whereas a grade 8 typically has a core Rockwell hardness of C33-C39. Based on this, grade 8’s are tougher than grade 5’s. Fatigue usually doesn’t play a big part in grade 8 or grade 5 fasteners since most steels are good for 2 million to 10 million cycles. Far more than you will ever winch or pull on. Here is a quick point about fastener fatigue. Almost all fastener fatigue failures are the result of improper (almost always too low) torque. Too low a torque will cause the fastener to pick up more load more often and eventually cycle it to failure. Therefore, you want to make sure you torque your fasteners to the appropriate level using a torque wrench and make sure to torque dry, clean threads.
  20. Dunelover

    Stanley vidmar cabinet ( like a lista )

  21. I've had these guys do work for me. in San Clemente http://www.rincontrucks.com/
  22. Dunelover

    What did you get yourself for Christmas?

    just a little bling...
  23. Dunelover

    How to handle breakages deep in the dunes?

    XX on vice grips. Used them many times for "get home repairs"
  24. Dunelover

    2015 F250 Super Duty Powerstroke 4x4

    I've seen this truck It's super clean.

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