Weight Reduction
 

Is there someone who knows about weight reductoin stages: 1 , 2 , 3 ?
I have take off some parts (back mudguard-light, mirrors, back hand bars)
but is more I can take off?

The weight is in the frame / forks / rear swing arm. i took my bike greenlaning last summer and got the courage to do some small jumps and all the time the bike wanted to land with the front wheel first, as it is very top heavy. never again... the experience almost scared me permanently.

You can remove the rear foot rest and hangers ,but the biggest weight saving will be when you change the standard exhausts.

Yeap, I change the exhaust and the air filter and put the PC III.
I realy need -10kg but how?
I'm thinking of removing the Air Box and puting a filter..... any ideas?

anybody thinking of going to a gym or running at dawn

He HE HE, your right there ! lay off the pies,thats the biggest weight saving you can make.:happy1:

I have removed my pillion pegs and was surprised at how heavy each of them are at about 3 Kilos!!! so take them both off and its another 6 Kilos of weight off the bike. :pottytrain2:

DELAYED ACTION IN THE CAPTMOTO HOUSEHOLD.:laughing11:

And about time too.

What is the pillion peg?

Your back passengers's foot pegs assembly.

Power to weight ratio
 

Getting that weight off, what does it do for us.

XT660, 173kgs to 48HP = 0,2774 HP Per 1KG

I you remove 10KGs in weight it will be the same gain as adding 2.7HP to the motor.

By removing a few things this is what you gain.

Rear foot mounts X2 complete with X4 bolts.= 1.300 grams

Hand grab rails X2, bolts X4 = 0.600 grams

Tool kit. = 0.900 grams

Total =2.800 grams

Your gain is 0.77HP just with these easily removed items. Get more weight off & more the gain.

You can get greater weight reduction by removing the STD cans & fitting after market ones. In this mod you gain HP & weight reduction, a big plus.

Once the weight is reduced, say 10kgs to 163kgs & your power is increased to 50HP with the cans fitted. Your power to weight ratio is now 0.3067HP to 1KG, that's about a 10% gain.

A KTM 640LC Motard has a power to weight ratio of 0.3355HP to 1 KG. We would need to shed another 14kgs to get the same power to weight ratio.

Or you could ride with half a tank of fuel! Should be good for a few kg's :)

Yes you could, but that would be 173kgs + half a tank of fuel. About 180kgs.

The bike's not going anywhere without it :)

I know what you mean, my bike does go better with a half tank of fuel.

With my lardy arse I don't think it really makes that much of a difference to be honest - I like to think my weight improves the sprung/unsprung ratio, and acts as plyable armour in an off. LOL

ballast? :angel7:

Guys, i took off my number plate to save weight, you should see how fast i can get the beast past speed cameras now! massive difference! hehehehehehe:005: just kidding, it's a good idea though

and if you so want to reduce a weight try to change a rear swinging arm,the new one is aluminium,but if you re not pleased with bike buy a new one,another one. the fact is that you can do a small changes on bike but if you try to loose some 10 kgs on bike you can do it but the bike will not be for road use anymore....but on some drastic changes you cant count on.:glasses7:

I could be wrong ,but didnt someone say the 2007 model XTX was some 7kilos heavier than the old bike .

If you want a light motard...go for the Husaberg, KTM EXC 525 or a Husky...:slywink:

yeap the 2007 XTX is heavier!! don't know how many kg, but heavier!
come on ..... why they did that?
170+ kg needs more hp

Weight Problem
 

Yep,

That's what the Yamaha site shows....

NeilSmiff

You forgot one thing - the driver.
If a driver weights 90kg than your "power gain" would be only 1.9HP and not 2.7 !

I thing i have to loose some weight...

Falling in the 'cuddly' weight devision would that mean I am experiencing negative power gain or power loss if you'd prefer? :confused5:

That's it. This is my last pie for the day!:naka:

At last... I thought no-one would spot that :laughing7:

... & remember that you ain't changing the horsepower at all anyway... just the power to weight ratio. I know you're just talking figuratively but you should be talkin ratios not HP. To say it's like having 50hp is incorrect... it's like having 48hp on a lighter bike... all the things that make up your drag are goin to be the same.

My weight as a rider is 73 kilos. But the fact is that I always keep 50 more kilos of candybars in my pockets :woo:

ok now seriously. Putting aftermarket (conciderably lighter) cans, there's more of a weight ratio moved from rear to front; right?
So, apart from gaining some HP --or weight to HP ratio--, isn't the stability or at least the handling of the bike changing? If so, the good or the bad way? Just being curious. Kev ,Freez... it's your call I suppose.

Yes ,.My bike with after market cans and some other mods made and some weight loss from the rear end conversion, my bike has more power but the top speed wobble has increaced. I thought if we could shed somehow some weight from the front end, that the front end would behave its self at top speed. Maybe even the weight out slightly. (dont no realy). Can anyone suggest how to loose alittle weight at the front end without spending shed loads of money? Or should i put a roll of lead under the seat to level it out.

You have probably already done but just in case the tool kit aint the lightest.
And by removing the starter motor . . .the bike loses a few kilos and the more bump starts you do the more weight you lose !!!! lol !!:002:

This is the biggest and most noticeable weight saving I have made:
http://www.off-the-road.de/xt660_end...mmer.html?&L=1

Thanks for that advice steve , I did remove the the starter motor , but got fed up bumping it, And got a sore arse so ive put it back on now and cant really notice the weight increace. Ive tried removing the handle bars but found it alittle hard to steer at speed , so ill just keep saving up for them machini wheels. That should do the job. See you soon mate.