Modifications and Adding Lightness

Discussion in 'Honda Hybrids' started by Sunin, Mar 4, 2009.

  1. Sunin

    Sunin Well-Known Member

    The highway is 65mph. I tend to do about 55-60 as the end of it goes down to 55 anyways so I waste less energy getting up an additional 5-10mph.

    My only alternate route takes me over some very hilly terrain. I know my MPG on that 30mph road is less than that of the 55-60mph stretch. There are two large hills that just eat my MPG.

    I will have to check the alignment and the spark plugs.

    Oh and I noticed some goof ball overfilled the engine with oil so I need to get that fixed this weekend!

    Sigh... uneducated people assuming 4quarters no matter the car...

    I travel very often with a passenger thus the desire to go to full on race seats that weight around 9lbs versus what I expect is a 35lb seat in the car now. I will look for blake's posts and see if I can gleem some Insight. Oh man that was a really bad joke!
  2. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Too bad about the alternates. :(

    Something else that you should consider is time of day for your routes. Finding the right time for a route is important -- sometimes a section that is nearly impassable at one time is the perfect hypermiling route at a different time.
  3. Sunin

    Sunin Well-Known Member

    Traffic overall is very light here in Siouxland. The only slow downs I generally have are traffic lights which appear to be on no set pattern, and cars occassionally cutting me off.

    Even at 60mpg I am very happy with the car. Will I keep trying yes. I bet my malibu gets avg 20mpg between the city / highway mileage, so 1/3 the fuel cost and pollution!
  4. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Light traffic is a good thing!

    Lights can be dealt with. You may need to hang back a little so that other cars trigger them for you. Keep watching the traffic at the lights and you should be able to determine a ballpark change interval when a car arrives at a red. I use this quite often on the lights along my routes and can generally figure out about how long the light will still be red (or will stay green if cross traffic appears). It may take some time to get a good handle on it.
  5. Sunin

    Sunin Well-Known Member

    Out of curiousity what do you all think losing 300 lbs of weight would do to my MPG?

    I was thinking 15%. I just want to know how aggressive I should get. This will be a several year project, but I have the following already in sight:

    1. Seats
    2. Battery
    3. Remove side mirrors (Checked laws and it is allowed) Install Nascar style 180 mirror
    4. Remove sun visors - Keep sun glasses in car
    5. Remove carpet
    6. Remove CD Changer in Trunk
    7. Considering removing rear speakers
    8. Begin Aero mods - Goal is to not alter the look of the car
    9. I run without an antennae - I'm thinking of integrating a jack for my iphone.
    10. Remove the rear winshield washer - motor and all - Plus wiring harness

    I hope to be about 35-40lbs lighter by the end of the weekend.

    Thank you all for the help! :)
  6. Chuck

    Chuck just the messenger

    A kill switch would be up there
  7. Sunin

    Sunin Well-Known Member

    So you kill the car while you do the glide phase?
  8. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Yes, and it is doable in a CVT (in Neutral!!) as well.

    I rode along with someone in an '06 CVT Insight the last time I was in Milwaukee to give instructions. In traffic and over reasonably hilly terrain he managed upper 80's -- and that was the first time he'd ever done that sort of driving. I had him coasting with the engine off in several places. The temperature was in the 50s and honestly, he wasn't paying as much attention to what he was doing as I would have liked. That car could have been in the upper 90's with just a little more work, and that was with the two of us in it (stock with the exception of the aftermarket stereo he'd installed).

    This is something that requires a lot of experience to do safely -- you have to know how your vehicle reacts and how long it takes to get the engine started again. If you decide to try this, do it in an empty parking lot and test how many full presses of the brake pedal it takes to deplete the vacuum power assist. It should take in the 3-5 press range. You can still use the brakes after this but there won't be any assist and you should be prepared for the extra pressure that requires. You'll still have power steering because that is electric, but you have to remember that everything is running on the small 12V instead of the large 144V battery behind your seat. This can be an issue if you have your headlights on.
  9. Sunin

    Sunin Well-Known Member

    So 300 lbs later: I used Miata weights, but reduced them a bit.

    Spare Tire 15.5 Lbs
    Storage Box 4.5 Lbs
    Owner's Manuals 1.5 Lbs
    Rear Cargo Mat and Net 7.5 Lbs
    Rear Carpet 4.5 Lbs
    Full Carpet Rip Out & Polish 40 Lbs
    Seats 52 Lbs
    Remove A/C 20 Lbs
    Remove Rear Speakers 10 Lbs
    Remove Rear Wiper blade and motor 5 Lbs
    Remove CD Juke Box 5 Lbs
    Remove Airbags 15 Lbs
    Remove Visors 5 Lbs
    Upgrade Brakes 10 Lbs
    Remove floor mats 5 Lbs
    Remove tie-down hooks 8 Lbs
    Remove excess metal in trunk 2 Lbs
    Remove Excess Bolt Lengths 20 Lbs
    Remove Door Panels 20 Lbs
    Remove Dash 40 Lbs
    Remove Center Console 5 Lbs
    Remove Antifreeze overflow bottle 5 Lbs
    Battery Swap 10 Lbs

    Adds up to 310lbs. Now what was the curb weight of the 2006 CVT?

    Add in another 10lbs of me losing weight... hehehehe :) Crap forgot remove side mirrors and related wiring 10 Lbs.

    Also looking at the engine there are excess plastics and crud I can remove. That could be a few more Lbs.
  10. JusBringIt

    JusBringIt Be Inspired

    Umm...I'm not so sure about removing those airbags, I would not recommend it.

    Do you really think there is 20lbs of excess bolt lengths??

    Do you have a rear defrost?

    The door problems probably wont weight that much.

    Other than that, good luck with the weight reduction.
  11. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    I agree on the airbags -- not worth it at all.

    Are you seriously wanting to drive something showing bare (and sometimes sharp!) metal inside?
  12. Sunin

    Sunin Well-Known Member

    I will only remove air bags if I put in race seats + 5 point harness. The airbags will not reach you if you have 5 point harnesses generally.

    Yes I do have rear defrost, thus the wiper blade is a bit useless.

    Door panels may not weight that much, but those are Miata weights, so as I do removals I'll weight them. All of the weights are estimates at this point, besides the wheel, cargo mats, and owner's manual etc. I removed and weighed those last night.

    Still no guesses on what 300 lbs of weight reduction will mean in MPG savings?
  13. Sunin

    Sunin Well-Known Member

    I will dremel/sand smooth all bare metal to ensure smooth. I've seen a miata with it, it gave it an industrial look. Something I am still rolling around in my head. I'm not 100% sure yet. I figured start with Seats and Battery, Visor, Mirrors and see what impact that has.
  14. JusBringIt

    JusBringIt Be Inspired

    That would probably give you a 10-15% increase depending on the torque produced at the various rpms.
  15. Shiba3420

    Shiba3420 Well-Known Member

    You might want to consider how that would look to a police officer...I car nearly stripped on the inside with a racing seat & 5 point harness, but being driven like the last thing you want is a speeding ticket....think they might be asking you questions for quite a while.

    You might consider option 2....get a motorbike, everything you mentioned is stripped along with 2 wheels, and entire exterior and quite a bit more.
  16. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Well, stock your car weighs 1975lbs. Mine weighs in at 1881lbs. (Both are equipped with AC). The non-AC MT version tips the scales at 1850lbs, though most of the FE gains attributable to that deletion have to do with losing the belt.

    We can't compare directly because your vehicle doesn't have lean burn, but I can tell you what adding weight to my car did on a highway trip. Last summer I drove from Coon Rapids (just north of Minneapolis) to Elkhart IN with a passenger and a full hatch. I averaged 52mph and went through a couple of traffic jams as well as some city congestion along the way. My average over that distance was 100.1mpg and I estimate I had about 250lbs of extra weight (besides the driver) in the car.

    The last time I drove to the cabin north of my residence (130mi one way) I had my wife in the car and easily over 150lbs in the hatch (so something close to 300lbs total). That was mostly highway with some city congestion, same average speed, and I averaged 98.3mpg for the round trip. The temp was in the high 50's.

    By myself, both of those would have been in the low 100 range (105mpg or so?). That should give you some idea what the weight difference will do on the highway in terms of percentages. Do remember that weight hurts you worse around town because there are a lot more momentum changes than out on the highway.
  17. worthywads

    worthywads Don't Feel Like Satan, I am to AAA

    Welcome from a former Siouxlander.

    I'm originally from LaCrosse WI, but I lived at 2310 S. Clinton in Morningside from 1989-1997, working for "The Beef".

    Have a couple Cheese Charlies at the Miles for me.:D
  18. lightfoot

    lightfoot Reformed speeder

    Glass is heavy. Maybe remove the side and rear glass and replace it with plastic sheeting held on with duct tape?

    Or remove the rear hatch altogether and cover the opening with plastic sheeting?
  19. msirach

    msirach Well-Known Member

    If you are going that far, yank the AC off too! I think I remember somebody saying there was 30 to 40lbs with it.

    Imagine the weight saved by removing the REAR HATCH! Glass is heavy!

  20. lightfoot

    lightfoot Reformed speeder

    I can't help thinking about:
    (1) Sealing up all the openings, filling the cabin with helium, and breathing through a mask and tube going to the outside. Problem is when you open the door you'd lose all the helium, and how to refill without carrying along a heavy tank?
    (2) Removing the body entirely, but unfortunately too many things are bolted to it.

    Maybe some sort of inflatable aero body, inflated with helium?

Share This Page