[ShakenNstirred]

Hi
I have a naked bird and I'm wondering how much weight has been saved over the stock bike.

The 4 in 2 exhaust replaced with 4in1 stainless Yoshi
No linked brakes
No stock fairing/headlight/clocks.
The frontend may be heavier as it Busa upside-down forks.
Busa wheels.

 

[XXGUY]

Roll it onto a scale and weigh it. Plenty of places have tariff scales. Then look up stock specs for a bird.

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[ShakenNstirred]

Not seen anywhere in the UK that would let you do that. years ago id have done it at work,
but the scales are now airside at the airport so can't get the bike there anymore.

 

[woodwizard]

Got a scrap metal dealer local or a VOSA site, they might let you use their weigh-bridge.

 

[XXGUY]

Roll it onto a scale and weigh it. Plenty of places have tariff scales. Then look up stock specs for a bird.

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Oh, we have granaries that semi trucks come in loaded with grain. They have scales. The state police along the interstate highway systems have scales to weigh the trucks to ensure that they are not overloaded. Stuff like that...?

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[XXGUY]

A quick Google search for weigh Bridges

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[cbrpaul]

simple
take the dry weight spec ( about 230 kg )
and then weight all the bits you removed and subtract
the fairing and fittings will loose you about 12-13 kg and the heavy silencers about 14 kg each plus what you put on

 

[TheDuck]

Try your municipal dump, they have weighbridges to weigh trade vehicles (i.e. don't go in the public entrance go in the trade entrance)

When I was checking the mass of Duck I went to my local dump and they refused to let me use the weighbridge. So I went back on another day, rode in, parked on the weighbridge and looked at the reading myself through the window. Then asked the operator what their opening times were and then 'by the way what is my bike weighing?' and the operator confirmed the reading I had already seen. :smilebig:

There is also another version (that I was confirming by using the weighbridge)

1. Confirm wife is out and not due to return in the next few minutes.

2. Go to bathroom and get the scales.

3. Lift front end and put scales under front wheel.

4. Place a piece of timber of the same height as the scales under the rear wheel.

5. Take reading.

6. Repeat procedure for rear wheel.

7. Add the two readings together.


The bathroom scales method is very useful if you want to work out the weight distribution F/R of your bike.

 

[Aussie Dave]

:evilaugh:....... all good ideas....... keep in mind the wet weight of the BB is around 260kg in stock trim.... the linked brakes I have been told weigh about 10kgs due to all the hoses and metal parts. So you must have removed approx 50kgs but added a few in replacement bits....... I'd throw a dart and guess your BB is in the 230kg class now...... how does it feel? Like a postie bike? :thumb: Surely the local waste station can give you a reading (with a freshly filled tank?), then all you need do is step on the digital bathroom scales as soon as you get off the bike, and subtract your helmeted jacketed gloved booted mass........ :eyebrows:.

Not sure about the error rates for small mass vehicles..... scales might be designed to work for 1.5 tonne vehicles, so a 230kg bike might not read as accurately as a car (position on the ramp may affect the reading too).

 

[rc46]

Rough estimate would be around 40lbs total loss. The exhaust is around 20 of that.

 

[ShakenNstirred]

Forgot to update this thread.
It was 226kg with an almost full tank.

FB_IMG_1650029355485.jpg

• ShakenNstirred
• 5 mo ago

20220424_171204~5.jpg

• ShakenNstirred
• 9 mo ago

 

[Jetfire]

Great!, was going to mention Landscape for rock and gravel have scales they can help us with also.
My biggest savings after battery switch out, center stand removal, and rear end remodel shave, was the Apro titanium full exhaust including can came to 11 lbs or 5 kg. 😎 The rest from larger bolt switch to titanium.

 

[TheDuck]

I got sucked into the weight saving hole when I was building the supercharged Bird. It took a lot of effort to get down to 200kg.
Short standard sidestand and far longer (and stronger) titanium sidestand to cater for the +11mm at the rear end.

 

[fizzy]

I got sucked into the weight saving hole when I was building the supercharged Bird. It took a lot of effort to get down to 200kg.
Short standard sidestand and far longer (and stronger) titanium sidestand to cater for the +11mm at the rear end. View attachment 134766 View attachment 134767

How much did that 124g (4.4 oz) saving cost? If you don't mind my asking.

 

[TheDuck]

How much did that 124g (4.4 oz) saving cost? If you don't mind my asking.

No idea but there was a lot of machining to make the ends. The Ti just came from my stock.
The weight saving was actually far more than indicated since the standard one wasn't long enough by a long way and would have needed a large steel insert to be welded in.

That said weight saving can become an addiction.

 

[Jetfire]

For Christmas I got (myself) Ti Banjo Bolts front, rear, and master cyl! "Somebody Stop Me" NOT

 

[XXGUY]

For Christmas I got (myself) Ti Banjo Bolts front, rear, and master cyl! "Somebody Stop Me" NOT

Hahahaha,
For Christmas I bought two digital, ratcheting flex head Snap On torque wrenches( 1/2" and 1/4".... Somebody stop me! Not... hahaha so then I bought a Milwaukee screw gun... I really do need help...
Last year for Christmas I bought the 3/8" drive torque wrench... it's all Beestoy's fault... I saw them in his garage and fell in love with them.

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[beestoys]

Hahahaha,
For Christmas I bought two digital, ratcheting flex head Snap On torque wrenches( 1/2" and 1/4". Last year for Christmas I bought the 3/8" drive torque wrench... it's all Beestoy's fault... I saw them in his garage and fell in love with them.

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Hey leave me outta this!