The KaTaMaki 650 ADV project (KTM LC4 gets a twin engine swap)

[cooneyr]

Good stuff LukasM. I'm watching this thread with interest. I've always thought there was space in the market for a reasonably priced DR650/640A sized bike with a twin i.e. Webber Rally Twin but much much cheaper. I'm about to sell my XTZ750 (Super Tenere) cause I've just brought a 04 950 Adv S (I cart my wife around a lot now days). The parallel twin motor in the XTZ750 is really nice - great torque for climbing hills and mucking around in mud/snow etc but also really good for longer trips. For one up riding though the XTZ750 is too heavy and the ergonoics are old school (as it everything on it) - great tourer though.

After having put 10,000 kms on the XTZ750 I'm a firm believer in having the air box or at least the air intake up above the engine behind the headset. The filters stay cleaner much much longer i.e. the air is cleaner than if the intake us under the seat like the DR650's is (I had a DR650 before the XTZ). I recon the 660 Rally tanks and air box above the motor is a good move. Acuatlly this whole build is an awesome idea.

Good luck, I'm watching with interest.
R

[LukasM]

Originally Posted by cooneyr

Good stuff LukasM. I'm watching this thread with interest. I've always thought there was space in the market for a reasonably priced DR650/640A sized bike with a twin i.e. Webber Rally Twin but much much cheaper. I'm about to sell my XTZ750 (Super Tenere) cause I've just brought a 04 950 Adv S (I cart my wife around a lot now days). The parallel twin motor in the XTZ750 is really nice - great torque for climbing hills and mucking around in mud/snow etc but also really good for longer trips. For one up riding though the XTZ750 is too heavy and the ergonoics are old school (as it everything on it) - great tourer though.

After having put 10,000 kms on the XTZ750 I'm a firm believer in having the air box or at least the air intake up above the engine behind the headset. The filters stay cleaner much much longer i.e. the air is cleaner than if the intake us under the seat like the DR650's is (I had a DR650 before the XTZ). I recon the 660 Rally tanks and air box above the motor is a good move. Acuatlly this whole build is an awesome idea.

Good luck, I'm watching with interest.
R

Thanks for the feedback R. I have to admit that I never even tried out the Super Ténéré, in fact after testing a friends Transalp a long time ago I didn't really consider a parallel twin engine bike again. While they are obviously much nicer for touring than a single, all the offerings here in Europe would pretty much suck once you got in the dirt.

The F800GS is definitely a step in the right direction, but I think I can get the same advantages on the road without excessive complexity (CAN-bus etc), the BMW price tag, and still come in about 50lbs lighter. But for 2 up touring the KTM 950 would definitely be my choice as well, I am sure you will have a ton of fun on her.

Just have to hope that I'll be able to find a used 660 Rally airbox, they are too expensive from the dealer. Or maybe make up my own out of composites....

[clapped_r6]

[LukasM]

Originally Posted by clapped_r6

Mind reader?

I just arrived back in Austria an hour ago and had an early Christmas with a bunch of boxes with bike parts waiting for me! Gotta get up in 6 hours for a meeting but I'll post some pictures tomorrow.

Hopefully I'll also find some time to work on the bike in the next few days, but it's not too likely as I have to prepare for a 3 week motorcycle adventure through Brazil next week. Life sucks!

[Aussie Steve]

Question.

I just realised the LC8 has chain on opposite side to the LC4. As I understand the late 640 and 950 share the same rear suspension and rear wheel (apart from width).

Will the 950 swingarm fit the 640?

[clintnz]

Originally Posted by Aussie Steve

Question.

I just realised the LC8 has chain on opposite side to the LC4. As I understand the late 640 and 950 share the same rear suspension and rear wheel (apart from width).

Will the 950 swingarm fit the 640?

No. The 950/990 have the linkage-less PDS setup, totally different to the good ol' pro-link on the 640.

Cool project Lukas BTW!

Cheers
Clint

[Aussie Steve]

Thanks Clintz.

So in truth the late 640/950 shares front forks, front wheel, front brakes and rear shock spring size only.

[NordieBoy]

Another option maybe...

[clapped_r6]

[dylandr]

????????

Where is everyone... whats happened to this thread?

[LukasM]

I have been riding across Brazil the last few weeks. Was having a blast until my engine (Honda NX4 Falcon) blew up in the middle of a 13 km long bridge, at night, alone, in Rio the Janeiro. Awesome.

Got lots of inspirations on features to make the Katamaki a great travel bike, though, once I return and find some time to work on it.

Here are the 660 Rally tanks (about 48 liters total capacity) I will be using:




Even though I am not sure yet what color scheme I will go with in the end, the seller offered to refinish them for little money so I went with KTM orange for now.



They all have this unpainted stripe so the fuel level can easily be seen:




I also found this 660 Rally seat to go with them. It has a pretty cool history, P.G. Lundmark finished the Dakar in 6th and 11th place on it:

[NordieBoy]

Looking good.

[overlandr]

Saw two graphs of 690 vs ER6N dyno comparison charts. The ER6N had a much wider flatter torque curve whereas the 690 ws more peaky and narrower meaning less flexible - not so much low - mid range grunt.

[LukasM]

Do you remember where you saw those dyno charts? I would be interested in taking a look.

Thanks!

[LC8TY]

Great stuff Lukas

Can I ask you for a small favor?

Please

What is the overall dimensions of the ER-6n engine, ie hieght, length, width?

The mounting points aren't important at the moment as the frame can be modified to suit.

I'm thinking about fitting the engine to a aluminium framed YZ450f