griff851
I just whipped out the old bath room scales and did a dry weight check. How does 154Kg (340lbs) sound.
Griff
stafford
If it's you, did the machine say "one at a time please!".
If it's the bike , sounds nice and skinny.
Eus_Daniel
Did you put the engine in the bike? 154kg is...is...very good 😯
henk
thats real light,i only get 157kg out of my SS.
what did you all do to get it to that weight?
henk!!!
griff851
henk wrotethats real light,i only get 157kg out of my SS.
what did you all do to get it to that weight?
henk!!!
Just Aluminum and Carbon, hollow axles etc. I did use bathroom scales so a kg either side I guess.
Griff
Mr.R
WOW Griff,
That sounds incredibly light to me that's Corse style weight, although that's probably wet?
Have you still got the original Brembo 3 spoke wheels fitted?
Small battery? If so what one?
Hollow axles? Where did you find a hollow front axle did you have one made?
Steve R
griff851
Hi Steve, dry weight doesn't have a battery,eng oil and rad coolant included. I thought Corse was around 145kg.
Yes standard wheels fitted, headlight indicators etc. The hollow axles came with the original 1990 851 set up. Just one of those box of bits builds I guess.
I can see how lightening holes in eng bits and track set up, mag wheels etc could shave it down further.
I still have to fit my DP rearsets and lighter front wheel, so I will get slightly lighter still, but I'm yet to add my steering dampener, and oil cooler.
Griff
Mr.R
Hi Griff,
Over here dry weight includes the battery but without the acid/de-ironised water.
In the case of my bike using a Hawker Odyssey battery, the lack of water wouldn't make a tinkers cuss of difference.
Steve R
griff851
I don't know about over there, I just goggled dry weight, and read the wilkopedia burst.
Griff
Mr.R
Hi Griff,
Just googled the points that you've given...
So I could subtract the weight of the complete battery, that would take between 15-20lbs off of the over all weight, I'm thinking that that's almost cheating here! 😉
I think a fairer (more realistic weight) whould include the battery, oil, coolant and a full tank of petrol/gas, although over here the wet weight 'only' includes 1 UK gallon of fuel which's of course heavier than a US Gallon...
As in a real street or track weight.
Fuel her up, fill the coolant system, fill the motor with oil, fit the battery complete with acid/water and please let me/us know the real weight of your bike mate.
If she comes in at around 400 lbs she'll be fucking light for a slightly modified road bike IMHO.
Steve R
Henrik
griff851 wroteI just whipped out the old bath room scales and did a dry weight check. How does 154Kg (340lbs) sound.
Griff
Sounds like you missed to put the bathroom scale under the other wheel and add the weights.
Brgds
Henrik
griff851
Ok 5.35kg for battery, 1 UK gallon=4.5 ltr x 0.737(sg)=3.31kg, 2.9ltr x1.1(sg)=3.19 for coolant, 3.5ltrx 0.89 (sg)=3.11kg
154
+3.19
+3.31
+3.11
+5.35
=168.96kg
=372.49 lbs
How about that then?
This reminds me of doing all up take off weights for a loaded Tornado back in the war. 20,000kg of fuel of fuel 4x 1000lbs bombs, 4 sidewinder missiles, 2 aircrew, 1 radar and a partridge in a pear tree!
When will the world and you foreigners realize the world needs to be standardized!😁
Griff
Mr.R
Hi Griff,
That sounds impressive.
I know that you've got a carbon tank, is the fairing and seat unit also in carbon?
Is the front fairing mount in alloy?
I've shaved a fair bit off of my 851/916, it's still got it's steel tank but the rest of the bodywork is all carbon/kevlar, I've still to fit the 3 piece carbon airbox and carbon runners, which will save a bit over the plastic airbox and the lightened steel fairing mount (I've lost a couple of lbs off of those parts).
With a fair amount of Ti'/lightened S/steel fasteners, mag outer engine covers, alloy flywheel/clutch/belt pullies, alloy subframe , lightweight discs/sprockets/chain, no fan and header tank, etc.
But I'd be amazed if it scaled anywhere near as light as the 400 lbs mark.
My bathroom scales were out by 3kgs over at 80 kgs, a fact that I learned (after giving up the booze 😯 on my recent diet to shead the last 3 kgs) when I hopped on the Quacks calibrated scales...Bugger!😡
Still personally losing over 50 lbs of lard helped the old nails speed somewhat.
You've got me thinking about bunging the old nail on a calibrated weighbridge now mate.
Steve R
spike
i used to use the local scrapyard weigh bridge ( q jokes about scrapyards ) they are quite keen on weight they hate to give too much away and there scales/ bridge isnt too far out
spike
Mr.R
Hi Spike,
I'd thought of the local scrap yard as the owners a member of a large off road motorcyling family the Flashman's, his bother Colin runs a small bike shop now, but back in the days of the World of Sport satuday afternoon scrambles series on the TV in the 60's he was quite a star, along with Nick Palmer, Robbie Blake (who actually won the championship) and a few others they made up 'The Cornish Mafia' a handy group of international licence holders, who mostly still race today as Vet's in the pre 65 MotoX events across Europe.
Robbie (Mr Blake no please call me Rob) and Colin do my MOT's they're both slightly deaf these days...
It must have been all those years of racing bikes long before silencing, like Goldies, Matchless, CCM, Maico, Greeves, Bultaco's etc.
Steve R
griff851
Do not get me wrong guys, we are talking about bathroom scales here, I am well aware of this. So 155-6kg is not out of the question as so rightly pointed out.
My ethos is steel is the enemy of speed. Alloy subframes front and rear, alloy clipons, Alloy brackets, GP1 front calipers, Kevlar brake and clutch lines, hollow axles. Carbon tank, 3 piece airbox, undertray, hugger and front mudguard,and rear indicator mounts, terg cans. Alloy fuel line where I can, small late model fuel pump, unifilters. Light weight rear adjustable suspension rocker arm.. 748 cooling circuit.....ah that's about it. Flywheel, con rods, oil pump drive, alternator rotor, Alloy clutch basket, selector drum, clutch cover and primary cover in the engine dept.
Griff
