Lightening the 570?

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T

TomTom

Joined
Nov 11, 2012
Messages
599
Location
Sweden
Im thinking of lightening the 570 70-degree bike.
It is currently pretty much a stock race bike with no lights on it, it only needs a few litres of fuel to do the racing Im into, any easy/reasonable ideas guys?
Not looking to go crazy here but if someone has ideas or have weighed parts, yeah you get what Im after, Id be most thankful!
 
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I been thinking the same, but it's not easy unless you go mental and pay money for titanium and carbon parts... The easiest is to buy a lithium battery and to not top up the tank. Maybe it's possible to build a more simple subframe of alu-rods?
 
Most modern bikes are pretty light. To lose any appreciable amount of weight would take tons of money. Battery, eliminate lights if not needed is the first thing i think of. Wheels and hubs can save a decent amount of unsuspened weight. Lightweight suspension component, but very expensive. Used to be able to get carbeb fiber plastic parts, again big money.
 
The fuel tank is pretty complex right? As in a lot of surface area to volume?

LiFePO4 batteries are cool.

Lighter seat pan and foam? Have heard something about that.

Cut down the plastics for a few hundred grams?
 
I think the subframe could be lighter but will take a lot of time and a handy welder/mechanic to build something nice that works, if you can do it yourself maybe not that expensive and save maybe one or 2 kg the battery I changed to lithium and saved over a kg but some have problems with lithium battery in colder conditions;)
Some tyres are also lighter/heavyr than others also cheap way of saving weight.

Expensive ways to save weight change as many bolts/nuts/axles etc for titanium lightweight suspension (air schock)
Lighter tubeless wheels carbon fiber etc...
The 570 just is NOT a light bike the engine ways over 3kg more than the "old" 627 engine and it's build more complex because of the 70° design and fuel injection ;)
 
Thanks for the ideas gentlemen! Think Ill have to improve my riding skills instead, dont you hate when that happens :(:D

I cant change wheels or tires unfortunately as you need spoked wheels and tires are just one classified kind.
Funny how deceiving brain is, on my scale the Berg is 3kg heavier than the KTM, feels like a lot more.
 
Is the 450ktm a more narrow bike between the legs? the 570 is still pretty wide for a "dirtbike" compared to a berg 650 it is smaller (wider tank on 650) but compared to crf 450 the berg feels a bit fat:).
 
HusaBELGfs570 said:
Is the 450ktm a more narrow bike between the legs? the 570 is still pretty wide for a "dirtbike" compared to a berg 650 it is smaller (wider tank on 650) but compared to crf 450 the berg feels a bit fat:).
Click to expand...

Oh, I have no idea really, its when pushing the bikes around in the garage the berg feels heavier, once riding I cant feel any difference.
The KTM is easier to get on top of the tank when going round a tree at trails riding as the seat is more straight and tank is lower and the Berg is better suited for the ice riding as its really neutral and stable sliding and no need to climb up the front end of the seat. So Im happy with what the bikes do for each type of riding.

For the coming season I wanted to make sure the bike works, and it does, so I ripped it apart and dynoed it again to the same power is there. tried the stacks and NO upside, lucky my friends did them :)
 
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Random thoughts:

Tubeless? Tubliss or tape+silicone?

Lighter rims - there is a difference. Lightweight rimlocks, if you use them.

Titanium springs? Idk.

Stiffer suspension in springs or valving. Makes it feel lighter because it's wallowing less.

And - Is the stock muffler heavy?
 
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Hey torist!

Almost suggested the obvious tape thing than it snapped his wheels have screwed...:D

TomTom I already made a lightening topic but unfortunetaly not much to do on a reasonable price except the battery.:furious:
 
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image_zpsu5pajf9g.jpeg

Very difficult to get any weight reductions on modern bikes , because the factories have really put a lot of thought into lightening components as much as possible . A lithium battery is the first and most effective option , but I also found recently that an Ohlins spring can save some weight , because it is about 25mm shorter and a much closer fit on the shock body . It doesn't leave much available preload adjustment thread though . An Akropovic titanium exhaust system will be a fair bit lighter than the stock exhaust . Also I think that the last year of Husaberg models used aluminium spokes in the wheels , saving about 500 grams I read somewhere . The shock spring and wheels save weight in good places , because the less unsprung weight makes the suspension work better .
 
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Inflate the tyres with helium!

At the end of the day, it would be more effective to shift some weight lower if possible.

If you know someone handy with a TIG it wouldn't be out of the question to knock up a subframe that would allow you to run a small tank lower enabling the main tank to be removed. It may also allow the fuel pump and electrics to be mounted lower. Run an FX loom?
 
a stock 627 engine vs a stock 570 engine is not 7 kg difference 3 maybe 4 at most...
Cases and crank are heavy'r and the fact you can't split the cylinder from a 650 engine without completely removing / dismantling the engine is also lighter but I prefer the 570 design.

the 650 is very light for 650 bike 570 is just average I read that a ohlins schock is almost a kg lighter than stock but expensive...
Would like to know the weight difference of just a spring probably not even 200 grams?

My suspension guy told me that for my weight a 84/250 spring would be perfect for supermoto (currently running 80/250) works fine to but if the ohlins is lighter it's another reason to swap:p
But ohlins springs use different numbers/nm don't know what spring type would be equal to a wp 84/250 spring???
 
husabelg have you weighed a 570?

stock 628 engine 27kgs (no e starter needed)

stock 570 with required estarter **** is very close to 34kgs

spring difference for ohlins is where most of the weight reduction is, close to 1kg
 
Yes I have put my completely stock 570 engine on the scale before rebuild (without starter).
But cant remember exact weight I think it was around 31 kg...
I might get a ohlins spring for my schock.
My engine now weighs more than before rebuild manual cct is a bit more weight and carillo Rod and piston also ad about 80 grams.
And I am currently running steel sprocket and one of the heavyst 520 chains available (ek zzz) and added steering stabilizer/handguards/crash protection so my 570 is fat:p
I do have lithium battery and complete fmf system but I think that only drops the weight a good 2kg...
 
forgot to mention my carbon fiber alpina wheels equals - 2.7 kilo's!!!

But my front wheel tubeless system started to fail and now I have to run a inner tube in the front wheel don't know the weight of a tube probably close to 500grams?

My new wheelset will not be carbon alpina because I owned them for 4 years now and the first 3 they where great but now I have the feeling they are falling apart:rolleyes:
(will send them for rebuild next year not to alpina because they can not repair them)

Last tyre change another piece of carbon broke of when the tyre was sliding over the rim (didn't even aplly much force)
I never had this happen in the 1st 3 years.
My new wheelset I will order soon(alpina alu) will have cushdrive to so probably around the same weight of stock tubeless supermoto wheels:eek:
 
Havent checked the forum as I was a on 'pikey' vacation with the duc in the back of my van just going round riding and camping.

Interesting posts!
I reckon the 570 isnt that light agreed, and I never thought it would be.
itll need some serious reconfig to be light. Im not going there as I cant have anything but the spoke wheels and everyone races on the exact same tires. Light battery in the summer is all zzz.
What the 570 brings that I like is high speed stability, of course it could be lighter and still do that, good thread, keep it up!

Took it for a spin yesterday on a friends gravel road, I feel fortunate doing this after work on a tuesday :)

https://youtu.be/8_PX02sdufM

Edit: Road is closed off at both ends and people in the houses know we do it and wont come out onto the road, they like to watch though -> good people!
 
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Cool nice upshifts so fast with qs:cool: I suck at upshifts I am slow and my ****** up left ankle doesnt help either (had a serieous injury 8 years ago and since than the movement/strength in my left ankle is limited).
On track it happens a lot I want to shift up and I am still in same gear:rolleyes:
On race bike this never happens because of reverse shifting:cool: only downshifts I **** up sometimes:D
 

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