KTMonda CR500 450sxf conversion

[jar944]

I should have it wrapped up this weekend, still have a bunch of little things to do.

[anonny]

How does the KTM can work on the expansion chamber?

[jar944]

Originally Posted by anonny

How does the KTM can work on the expansion chamber?

great once you increase the all the tubing and baffle from 25mm to 32mm.

[ssregal39]

that is a sweet project. can't wait for a ride report.

[sportrider]

Awesome build! I would love to see that thing go.

[Rocket_Rookie]

Looks great.. Wow..

I'm jealous.

[jar944]

Just some pics of the cdi placement, coolant block off for the head, and carb fitment.

[wfopete]

Shhhhh!

Do you hear that?

That motor is beggining for a new flat slide carb and some V Force Reeds!

[jar944]

Originally Posted by wfopete

Shhhhh!

Do you hear that?

That motor is beggining for a new flat slide carb and some V Force Reeds!

Ha that's a 39.5mm PWK in the pic. If it gets anything it will be a rad valve so I can change the carb angle to match the air boot perfectly.

[yzmaico]

Is that one panel with the slight blue tint an Acerbis?

I ended up going with all UFO plastics on my '09 KTM, for that bright white color.

Can't wait for a ride report!!!! Beautiful work

[jar944]

Originally Posted by yzmaico

Is that one panel with the slight blue tint an Acerbis?

I ended up going with all UFO plastics on my '09 KTM, for that bright white color.

Can't wait for a ride report!!!! Beautiful work

The side panel / airbox is OEM

[jar944]

I wasnt happy with the exhaust mounting and routing so i decided to fix it

tweaked silencer



way more clearance


rear pipe mount


The pipe is cut back to the cone and the flange and rear mount welded



exhaust complete


compelted head stays


It's Done. the only custom parts are the frame mounts, head stay and the exhaust and even that isn't much work

also with this conversion I can pull the carb with everything in place (unlike the AF's)

[dzrtracin]

NICE job. My CR500AF is still my favorite bike to ride. ENJOY!

RIDE ON!

[jar944]

I got the magura installed.. much better. now to get the decomp done.

I took it for it's first real ride finally today. about 30 miles of rock infested trail.

Firstly, the suspension is not even close for rocks, but i knew that going in to today I just slapped a spare 08 250sxf shock and stock 450sxf front end.

Happily even with the susp it wasn't bad in the rocks, I ended up feeling better after that run than I have on any of my other bikes.

On to the handling. It doesn't any lighter pushing it around the garage or lifting it than my RFS hybrids or 450sxf (and it shouldn't since it weighs as much) however when moving it feels lighter and more flickable.

Power wise.. what can i say it's a 500cc 2t. People fear them, honestly though after spending some time on it I have no idea why? It's a smooth power that IMHO is very easy to ride. It has instant off idle Tq, way more than my TR570 w/ a 806 cam (and i thought that was torquey) that builds quickly and signs off early. It feels strange revving it out but on the plus side you don't need to if you don't want. Vibration is noticeable above 1/2 throttle, not horrible though.

I found myself going too fast into some corners w/o realizing how much speed I was carrying, it's deceptive speed. Burp the throttle and you move faster and faster.

All in all once I sort out the suspension I think this may be my favorite new bike. sure it has down sides but overall i think the KTMCR5 is a good combo.

[Leo.G]

Great build!

Could you please post a little video showing how the bike does?

It seems to be a really nice and powerful combo the one you've made...

I think that maybe people is scared of the 500cc 2t because they don't know how to control all that power in the throttle...
For me it's all a question of practise and confidence in the bike, and also a lot of respect to it..

That's all for now
Thanks for showing it to us!
Greetings from Argentina!