Topic: 2 x 2 kit voor KTM EXC

[member]

Zojuist gespot op ebay een systeem voor voorwielaandrijving: http://cgi.ebay.nl/2-WHEEL-DRIVE-KIT-KTM-450-SXF-EXC-SMR-CHRISTINI-AWD-2WD-/300590805953?pt=UK_Motorcycles&hash=item45fc9bb3c1#ht_3820wt_1139



Aan deze foto te zien toegepast bij supermotard. Van Yamaha ken ik dit wel. Is 1 (of 2?) jaar in de Dakar toegepast toen een stille dood gestorven?



! In welke situaties zouden de nadelen zoals de zwaardere voorkant (+ onafgeveerd gewicht) opwegen tegen de voordelen?

De rest van de info even gekopieerd aangezien dat over een dag over 4 zeker weg is:

2010 model Two wheel drive kit available for sale to fit KTM models 450 sxf exc smr and possibly others by checking with the manufacturer. Years 07-11
Bought new last year from Christini AWD in the USA and only done 13 hours use.
Powder coated KTM orange as can be seen and includes the carbon fibre tank in the pictures, also included is an oversize plastic tank suitable for enduro's.
Two drive hubs included so you can have two front wheels.

This is an awesome piece of engineering and works really good in all terrains, lots more information can be found at www.christinichristinichristini.com

The forks shown are not included in this sale but can be available by seperate negotiation, what you will get is the fork bottoms that will replace your existing ones.
There is a handlebar mounted lever so you can disengage the system if required.
Spare gearing include so you can alter the drive ratio fron 40% through to 100%.

This kit cost me in excess of £5000 so heres a chance to grab yourself a bargain, you will receive the whole frame, ancillary items,owners manual and spares kit to fully convert your KTM motorcycle into 2wd.

This is not a frame exchange service as christini offers hence you are not having to wait the 6 weeks for production and associated postal and duty costs.

Delivery available worldwide by courier at same cost to me.

Please no timewasters or silly questions/offers etc.

More information from the manufacturer below: -

Christini's patented mechanical All Wheel Drive system delivers power from the motorcycle transmission to the front wheel through a series of chains and shafts. There is no energy-robbing hydraulics involved.
The lightweight all-mechanical system works similar to that of AWD systems found on four wheeled vehicles. The AWD system (powering the front wheel) is driven at a slightly lower rate than the rear wheel (approximately 80%). Under optimum traction conditions, the rear wheel is actually driving faster than the front AWD system. One-way clutches within the front hub allow the front wheel to freewheel under these conditions. At this point, the AWD system is effectively passive. Though the front AWD system is turning, it is not actually transferring power to the front wheel. When the rear wheel loses traction, the drive ratio, relative to your forward speed, changes. The AWD system engages, transferring power to the front wheel until traction is reestablished at the rear wheel.

The way the front system works is like pedaling a bicycle down hill. You are pedaling, but because of gravity (acting like the rear drive) the bike is traveling faster than you are delivering power. When you get to the bottom of the hill and slow down (similar to what happens when the rear wheel spins), you will begin to power the bike again.

An added benefit of AWD is that the front wheel does not want to wash out. When a front end tucks, the wheel stalls, stops turning, and begins to push. With the AWD system, as soon as the wheel begins to stall, power is delivered to the front wheel, forcing it to turn. With the front wheel under power, it is nearly impossible to wash out the front end.


How It Works
Power runs via chain from the secondary countershaft sprocket up to a gearbox located on the frame.



Power is converted to a drive shaft running under the tank to the modified steering head.



Counter rotating bevel gears located within the head tube transfer power to the lower triple clamp.



The lower triple clamp contains a small chain and sprocket system that drives two counter-rotating drive shafts.



The specially coated drive shafts are telescopic and incorporate linear ball spline bearings. They are counter rotating to eliminate torque effect. They run the length of the fork to the front hub.



The Christini AWD front hub is equipped with one-way clutches allowing the wheel to transfer power when needed, and freewheel when not in use.

[member]

Ik ken dit systeem wel van beeldmateriaal van de Erzberg Rodeo en de Red Bull Romaniacs.

[member]

wat een wijriving ten nadele van je motorvermogen
Heel veel onderdelen
en stuk zwaarder
en waarvoor? omdat je iets beter een duin op kan rijden?

Andere kant gahaaaaf dat er techneuten zijn die dit mogelijk maken

[member]

leuk, maar dat hydraulische systeem van Yamaha WR was lichter....

dit ziet er leuk en goed uit...
maar of het opweegt tegen de gigantische wrijving...

misschien iets voor een 2-cilinder?
met zo'n 100 pk, lever je minstens 20 paarden in om dit aan te drijven (_{ruwe schatting})

wel grappig..
en ik hoop dat die secundaire aandrijfketting goed beschermt is.. want als die ketting eraf vliegt..
hoop ik dat je kloten op dezelfde plek blijven zitten...... 

[member]

Ik ken dit systeem wel van beeldmateriaal van de Erzberg Rodeo en de Red Bull Romaniacs.

Mooie scene is inderdaad dat een topper loopt te kloten op een van die vele zware secties en dat zo'n cristini-ktm er echt voorbij vliegt.