Page Comparison

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Research

Car Requirements

Safety Criteria:

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• Head Restraint Lateral & Longitudinal Stability

• Vertical Load Strength of Cushion Frame 

• Seat Ornamentation & Knob Pull-off Strength 

• Actuator Strength in the Direction of Operation

• Seat-back Map Pocket Static Strength Requirements

• Seat-back Torsion Strength

• Jounce Test (Cushion & Back)

• Armrest Strength & Operating Effort

• Latch Catch Spring Test

• Jump Seat Strength

• Fatigue Resistance (seat structural fatigue durability test)

• Vibration Test for Resonance Point Detection

• Thermal Cycle Ageing Test or Creep Test 

How to attach the seat to bottom panel

Whats Needed if attaching a bracket to the panel

• Seat Brackets:
  You will need brackets made specifically for your car. If you’re installing two seats make sure you have one driver’s side bracket and one passenger’s side bracket. They are usually not interchangeable.

• Sliders (optional):
  If we are not sliding the seat forwards and backwards they can be omitted.

• Side Mount Brackets (for side-mount seats only):
  Can determine whether or not your seats are side mount by locating the mounting holes for the bracket. If they are on the sides of the seat, on the outsides of your thighs they are side mount seats. if they are on the bottom or underside of the seat they are bottom mount seats.

• Installation Hardware: At minimum 4 bolts for the seat bracket, 4 nuts and 4 bolts for the sliders (if applicable), and another 4 nuts and 4 bolts for the side mount brackets (if applicable). Depend on seat design

• Socket and Ratchet Set: For the majority of cars all that you’ll need is a few sockets, an extension, and a ratchet. For Japanese cars, the size sockets you’ll need are 14mm and/or 17mm. Depends on seat designs.

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Assemble Your New Seats (bottom mount):

The first thing you should do is attach your seat brackets and (if applicable) sliders to seats.

1. Attach sliders to seat (if applicable): start by setting your seat down, on its side, on a soft surface. Locate the holes at each corner of your sliders (if there is more than one hole per corner, just choose one; you can always adjust it later) and line them up with the four holes on the bottom of the seat. Insert bolts through these holes and tighten them. (If you’re not using sliders, skip this step).

2. Attach seat bracket to sliders: for this step you might have to use the sliding mechanism on your slider to access the holes meant for the seat bracket. Once they’re lined up, slip 4 bolts through them and tighten them down with the corresponding nuts.

 Assemble Your New Seats:

1. Attach side mounts to sliders: line up the holes on each corner of the sliders to the holes on the front and back of the side mounts. Then slide bolts through them and tighten them down.

2. Attach sliders to seat brackets: simply line up the four holes on the sliders with the four holes on the seat bracket and slip the bolts through them. Thread the corresponding nuts onto the bolts you just installed. (If you’re not using sliders, skip this step.)

3. Attach seat to side mounts: slip your new seat in between the side mount brackets and line up the holes on each side of the seat with the holes on the side mount brackets. Then slip 4 bolts through the side mount brackets (2 on each side) and tighten them.

  Install Your New Seat:

1. Attach your factory seat belt buckle to your new seat bracket (if applicable): you may need a new bolt and a nut to install the buckle.

2. Maneuver your new seat into your vehicle: again, be careful to avoid scratching your car with the seat bracket.

3. Plug in electrical connectors: locate the electrical connectors that you unplugged from the factory seat, and connect them to your new seat. If your new seat can’t accommodate any of these connectors, leave them unplugged.

4. Line up the seat bracket: locate the four holes from which you removed the four bolts holding the factory seat in place and line them up with the four holes at the corners of the seat bracket of your new seat.

5. Bolt down the seat: install the original factory bolts in the reverse order of removal. If you’re using sliders, take advantage of them! Slide the seat back to install the front bolts, and then slide it forward to install the rears. Careful not to over tighten them!

6. Check your seating position: make sure that you can position the seat in a way that’s comfortable for you. If it’s not possible, pull the seat out and try mounting the seat using different holes on the brackets and sliders.

NOTE SJ SAID CHASSIS TEAM WILL TAKE OVER ADHESIVE USED TO ADHERE SEATS TO BOTTOM PANEL SO WE WILL USE GLUE

https://www.braumracing.com/universal-seat-installation-guide/

Risk/Unknowns Identification

What are the major technical risks or unknowns associated with this project?

Prompts for areas of investigation include regulation risks (i.e. headlight brightness doesn’t meet regs), mechanical risks (i.e headlight melting from high temperature), manufacturing/assembly risks (i.e how does headlight mount to aero body?)

Risk/Unknown Mitigation Concepting

What can we do to mitigate these aforementioned risks/unknowns?

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Risk/Unknown

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Order of Importance

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Mitigation

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How to Test

Stackable Seats - how stable will it be when being attatched but must also be able to remove to meet height and vision regs for people of various heights

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1

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Use velcro to attach and detach stackable seats

Using 3M Velcro - seems to be the best option/strongest

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Calculations

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Seat Overheating - Prevent overheating

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3

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Ensure materials allow mesh to circulate

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Thermal study in solidworks

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Seat Mounting/Adhesives - How will the seats be attatched? Last years seats have mounting brackets (have research on it above). Chassis team is looking into an adhesive to attach the seat to the bottom panel

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1

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Use an adhesive

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Seat Structure - Will the seat backing be strong enough to provide support when breaks are slammed, accident etc.

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1

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Strong back skeleton

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Ballast bag compartment placement - placed in a safe space where it is secured and close to the passengers. Must have easy access for switching

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1

make the enclosure able to open and close and create a slot on or near each seat so it is secure and removable 

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Head rest - Test clearance and adjustable for helmet and no helmet

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2

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Ensure head rest is adjustable for heights of all drivers with and without a helmet and ensure clearance. Not really any way to mitigate

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3M Dual lock recosable fastener for seat

https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Dual-Lock-Reclosable-Fastener-SJ3541/?N=5002385+3293242271&rt=rud

Data sheet/ Typical Performance https://multimedia.3m.com/mws/media/1591570O/3m-dual-lock-reclosable-fastener-sj3542.pdf

Model SJ3541

• Black, interlocking mushroom-shaped heads (400 stem density per square inch) provide strong, reliable and durable fastening that can be opened and closed multiple times

• Mates with Type 170 and Type 250 stem densities to provide different strength combinations

• Synthetic rubber-based adhesive bonds well to a variety of substrates including low surface energy plastics such as polyethylene and polypropylene

• Strong fastener secures with an audible snap, verifying closure

• An alternative to screws and bolts, this hidden fastener provides a snug fit and smooth aesthetic appearance

• Features good temperature resistance of 120°F (49°C)

• Best suited for indoor use

3M™ Dual Lock™ Reclosable Fastener SJ3541 is the easy and clear alternative to traditional fastening methods, such as screws, nuts or bolts. It is designed to deliver a durable, reclosable fastening solution (which can be opened and closed multiple times) which bonds to a variety of substrates including many plastics and low surface energy materials.

Specifications

Seat Calculations

Ballast Calculations

Strap we are using https://www.canadiantire.ca/en/pdp/light-duty-lashing-straps-1-in-x-12-ft-2-pk-0402701p.html?rrec=true#spc

Bolster Update : Using straps for bolster instead of velcro. Max Newtons is 1471 which is 150kg which is below the 204kg max so it is safe

Seat and Bolster Test Bench - What is needed

1. Chassis needs to be installed

   1. maybe bottom panels

   2. maybe doors (the more parts of the car installed, the better)

   3. the more things installed the more parts we can try and fix for comfort (ex doors arent necessary but would help with overall comfort)

2. Construct bolsters and Seats out of wood

   1. general shape does not need to have exact curvature

   2. head part so we can see comfort with helmet

   3. make stackable seat separately and test comfort

   4. same for bolsters

   5. can get fabrics and cushions samples to test comfort

Questions to ask people testing

1. Rate comfort of cushions

2. Seat design, stackable seat overall comfort of seat and bolsters

3. Suggestions for how it can be modified/changed and proceed with those changes

Fabrics

• Doesnt need waterproof coating being used for catamaran cover

Material options

• PVC Fabric

  • lower end

  • uglier asthetic

  • Not very confortable

  • cheaper

• Nylon Fabric

  • universal seat fabric

  • Durable and Cheap

• Vinyl Fabric

  • Easy to clean

  • Nice asthetic (gives leather astheitic without being faux leather)

  • Durable and good quality

  • Comfortable

  • Good for a seat cover

  • Comes in wide range of colours