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JH282
05-31-2010, 7:51 PM
Hi guys... so weight reduction was always a big deal to me when I was building street cars, not so much with bikes, but I'm slowly tearing the bike apart and putting stock parts I'm taking off on a scale just to see how much weight's coming off. I was wondering if any XS650 owners would be interested in checking out the numbers, or if I'd just be wasting my time posting???

convergecult
05-31-2010, 8:28 PM
Interesting as horsepower to weight ratios can make a huge difference. Let us know what you come up with...

Ember
06-01-2010, 12:04 AM
I'm interested in seeing your results. I am also going to be ripping into mine, but I never thought to weigh all the crap I will be taking off. Don't forget to weigh the parts you add to the bike as well.

sure
06-01-2010, 5:15 PM
I can't remember what a stock one weighed when we did it but all of our builds weigh around 300-325 lbs.
www.ardcorechoppers.com

viz
06-01-2010, 5:19 PM
It looks like depending on the model anywhere from about 400-470 pounds. Early ones being a bit lighter. Damn nice weight reduction from what SURE said they weighed in at.

philbey
06-03-2010, 11:25 PM
The thing about power to weight with a bike as well, remember that the rider could easily be 1/3 of the total weight!

It might be easier to shave 15kg off the old beer gut than try shave that same amount off the bike hhaha.!

metricmofo
06-06-2010, 1:12 AM
not the beer! the beer!


http://3.bp.blogspot.com/_1MwqlCPmQ8I/TAgpZqZ2qOI/AAAAAAAAC8s/nYnZ0JYhEN8/s1600/freedom-or-death-motorbike-bash_liberty.jpg (http://bikernetmetricnews.blogspot.com/p/freedom-or-death-motorbike-bash.html)

anybody who wants to talk about metric bikes will find a lot of experienced dudes to talk with at the bash. look for chris (aka limey) especially. he's a master.

JH282
06-09-2010, 6:44 PM
Ok, so here are some numbers in no particular order... All parts are off an 81 XS special.

- Tail Light w/ bulb, mounting bolts, pig tail = 1 LBS 7 OZ
- Horn w/ bracket = 14 OZ
- Stock Mirror = 13 OZ Each
- Bar switch assembly w/ screws LH side = 10 OZ
- Helmet lock w/ mounting bolt = 7 OZ
- Rear turn signals w/ mounting hardware = 10 OZ Each
- Front turn signals w/ hardware = 13 OZ Each
- Frame reflectors w/ screws = 4 OZ Both
- Shock reflectors w/ screws = 3 OZ Both
- Pass foot pegs = 10 OZ Each
- Chain guard = 1 LBS 11 OZ
- Highway foot bar w/ hardware = 4 LBS 5 OZ
- Rear fender w/ tag light = 3 LBS 8 OZ
- Front fender = 4 LBS 1 OZ
- Seat = 9 LBS 8 OZ
- Bar behind seat = 3 LBS 13 OZ
- Luggage rack = 8 LBS 11 OZ
- Battery = 8 LBS 8 OZ
- Stash box that sits under battery = 3 OZ
- Tach & speedometer w/ bracket & cables = 3 LBS 6 OZ
- Indicator box that sits between tach & speedo = 4 OZ

Doesn't seem like much, but the small shit deffenitely adds up. I've already shaved off about 40 pounds off my bike. I'm sure when I hard tail it this winter it won't be too hard to take off about 100 pounds.

philbey
06-10-2010, 9:38 PM
10kg total for passenger footpegs! That's crazy!

JH282
06-21-2010, 12:43 PM
Couple more #s
- Stock BS34 carbs = 3 LBS 15 OZ
- Stock airbox with filters = 2 LBS 14 OZ
- Plastic side covers = 13OZ

Rabbit
06-21-2010, 1:05 PM
Not sure if it'd make much difference if you shave off 100lbs, but maybe. I know from drag cars, 100lbs lost gets you about 1/10th of a second in the 1/4mile. HP to weight would be improved, but not sure if in the end it is really gonna make a huge difference to focus on weight.

JH282
07-01-2010, 8:17 PM
I'm not really focussing on weight. I'm not building a race bike, just documenting. But like you said, better power to weight ratio won't hurt. Better gas mileage and a more nimble bike is a plus in my book too.

- Throttle housing & switch assembly = 8 OZ
- Center stand = 3 LBS 2 OZ

Ember
07-01-2010, 8:48 PM
Any weight reduction will help me with loading and unloading these things off our truck.

JH282
07-10-2010, 11:02 PM
- Stock exhaust system = 22 LBS 6 OZ !
Chop those fucking pipes!

Punkskalar
07-11-2010, 12:12 AM
Any weight reduction will help me with loading and unloading these things off our truck.

Or when you have to stuff an XS into the trunk of a honda civic.... Just ask JH282 about that one... Light bike = Easier to stuff into trunk without disassembly!

Lonnie
07-20-2010, 9:40 AM
interesting thread. one of the things I like about mine is how light it is. like riding a small dirtbike. just guessing, but mine can't weigh more than a few hundred pounds.

Storminsteve
08-30-2016, 8:11 AM
Sorry, i know im coming in to this thread 6 years later.lol.i have been trying to find an actual number for weight on a completed xs 650 with TC bros hartail. But reading this thread, i can say this, when i was carpooling every other week, One week i was alone, the other week with 200 lbs passenger in a Cavelier. made the difference of : Just me 100$ per week in gas, and with my 200# passenger 60$ per week. weight is huge.