KTMonda CR500 450sxf conversion - Page 7

bchunter · 12-01-2012, 07:32 AM

Hey folks. I just had to add in here.

First, jar944, very nice build!!! Good and clean work.

I did a similar thing, but put a KTM engine into a Suzuki frame. It was a 2000 KTM 250 EXC engine and I put it in a 1991 TS 200 frame. I did this when the TS 200 calved on me the second time in one year

So instead of dumping all the $$$ into the anemic TS engine, I put in a KTM engine. The nice thing with this build is that the TS is street legal, so now I have a fully street legal KTM two stroke.

Here is a video of the build that I did:

http://www.youtube.com/watch?v=UxFqySg0L6A

Sorry for hijacking the thread, just wanted to add my build in here as well.

Congrats on the successful build. Again, very nice and clean!!!

backdrifter · 12-08-2012, 11:48 AM

Incredibly cool project, jar944! I did something fairly similar years back with a KTM 550, but rather than swap frames, I just modernized the suspension, body work, and just about everything else. That 550 mill was a beast. I really wish I hadn't parted with that bike now, but such is life. I'm having fun living vicariously through your thread!

Here's a pic of my old girl (let me know if you want me to remove the photo if you find it disruptive).

Thanks for the great read!

jar944 · 12-09-2012, 03:22 PM

Quote:

Originally Posted by backdrifter

Incredibly cool project, jar944! I did something failrly similar years back with a KTM 550, but rather than swap frames, I just modernized the suspension, body work, and just about everything else. That 550 mill was a beast. I really wish I hadn't parted with that bike now, but such is life. I'm having fun living vicariously through your thread!

Here's a pic of my old girl (let me know if you want me to remove the photo if you find it disruptive).

Thanks for the great read!

No need to remove it, the plastic conversion looks fantastic.

backdrifter · 12-10-2012, 07:23 AM

Thanks for the kind words! The plastic conversion certainly made it look modern, but it was the CRF front fork conversion, the custom Ohlins shock, and the balancing, polishing, and porting (my builder estimated 75 hp - I have no idea, but it was too fast for me!) that made it a blast to ride!

Keep up the good work, your bike looks amazing!

jar944 · 12-10-2012, 10:01 AM

Quote:

Originally Posted by backdrifter

Thanks for the kind words! The plastic conversion certainly made it look modern, but it was the CRF front fork conversion, the custom Ohlins shock, and the balancing, polishing, and porting (my builder estimated 75 hp - I have no idea, but it was too fast for me!) that made it a blast to ride!

Keep up the good work, your bike looks amazing!

Cherokee?

nice, I didn't notice the Showas.

edit I knew I'd seen your bike before https://www.youtube.com/watch?v=YharXbUkMZo

you had a build thread in the olde section on KTMtalk correct?

backdrifter · 12-10-2012, 11:53 AM

Quote:

Originally Posted by jar944

Cherokee?

nice, I didn't notice the Showas.

edit I knew I'd seen your bike before https://www.youtube.com/watch?v=YharXbUkMZo

you had a build thread in the olde section on KTMtalk correct?

Ha ha, it's been a LONG time since I heard that name, but yes, that's correct! Do you know Cherokee? What a great guy....

I used to frequent the KTMtalk site quite a bit, and yes, I did a build thread on the bike over there under the same screen name, but unfortunately I later changed something in my Photobucket account and all of the pictures got moved, so the links no longer work.

Did you or do you frequent that site? I miss the site and the bike. Like I said, stupid decision to sell it.

Again, awesome project and it looks like your skills are well above and beyond mine (not too tough). Enjoy riding that beast!

aaronc70 · 01-02-2013, 10:53 AM

Quote:

Originally Posted by jar944

The Oct issue of dirt rider magazine profiles a KTM cr500 hybrid.

Didn't the article say that guy used a KTM 125 2T for his conversion? From looking over your posts (thanks JAR944 for all the great pics and info, BTW), it looks like you recommend only 07/08 450/505 SXF/XCF frames and think any other frame would require a cradle swap modification, correct? I'd like to do one of these myself, but reconfiguring an engine cradle is above my head. If I go for it, I want to make sure I start with a frame that requires minimum modification (ideally only removing and rewelding the engine mounts).

Aaron C.

aaronc70 · 01-02-2013, 06:28 PM

Quote:

Originally Posted by aaronc70

Didn't the article say that guy used a KTM 125 2T for his conversion? From looking over your posts (thanks JAR944 for all the great pics and info, BTW), it looks like you recommend only 07/08 450/505 SXF/XCF frames and think any other frame would require a cradle swap modification, correct? I'd like to do one of these myself, but reconfiguring an engine cradle is above my head. If I go for it, I want to make sure I start with a frame that requires minimum modification (ideally only removing and rewelding the engine mounts).

Aaron C.

I reread that Dirt Rider article, he used a 2010 250SX 2T for the chassis. They didn't get into to details on building it but said it "was surprisingly easy".

jar944 · 01-04-2013, 05:24 AM

Quote:

Originally Posted by aaronc70

I reread that Dirt Rider article, he used a 2010 250SX 2T for the chassis. They didn't get into to details on building it but said it "was surprisingly easy".

i have the article. It's not a 2t frame, or at the very minimum they used a 250sxf cradle. Likely though it's a full 250sxf frame which is a good bit harder to make work than a 450sxf frame. Also its a mix of years/parts. The wheels/hubs/rotors are 05-06

aaronc70 · 01-04-2013, 10:16 AM

Quote:

Originally Posted by jar944

i have the article. It's not a 2t frame, or at the very minimum they used a 250sxf cradle. Likely though it's a full 250sxf frame which is a good bit harder to make work than a 450sxf frame. Also its a mix of years/parts. The wheels/hubs/rotors are 05-06

Well, just took another look at the article and they mention twice the frame being from a 2012 250 SX, but you have the experience here. I'll keep my eye out for a 450SX/XC chassis to keep it simple, thanks again!

jar944 · 01-04-2013, 11:38 AM

Quote:

Originally Posted by aaronc70

Well, just took another look at the article and they mention twice the frame being from a 2012 250 SX, but you have the experience here. I'll keep my eye out for a 450SX/XC chassis to keep it simple, thanks again!

You can see the double bend in the bottom of the cradle in the article pics. That only occurs on the 250sxf

250sx vs 250sxf vs 450sxf

aaronc70 · 01-04-2013, 01:53 PM

[QUOTE=jar944;20394801]You can see the double bend in the bottom of the cradle in the article pics. That only occurs on the 250sxf

OH, OK, got ya, thanks!

aaronc70 · 01-09-2013, 08:11 PM

I know previously you said the 2011/2012 450SXF frames should work just as well as the 07-10 frames. Do you have any idea if the 350 SXF/XCF frames would work as easily or would frame bending, cutting, etc be required? I'm not sure if the 350 motor itself is closer in size to the 450 or 250.

jar944 · 01-10-2013, 10:35 AM

Quote:

Originally Posted by aaronc70

I know previously you said the 2011/2012 450SXF frames should work just as well as the 07-10 frames. Do you have any idea if the 350 SXF/XCF frames would work as easily or would frame bending, cutting, etc be required? I'm not sure if the 350 motor itself is closer in size to the 450 or 250.

I don't know for certain, but I would not expect to fit without some fabrication.

aaronc70 · 01-11-2013, 09:42 AM

Quote:

Originally Posted by jar944

I don't know for certain, but I would not expect to fit without some fabrication.

OK, copy. Thanks again.

12-01-2012, 07:32 AM	#91
bchunter Adventurer Joined: Apr 2010 Location: Smithers, BC Oddometer: 90	KTM engine into a Suzuki frame Hey folks. I just had to add in here. First, jar944, very nice build!!! Good and clean work. I did a similar thing, but put a KTM engine into a Suzuki frame. It was a 2000 KTM 250 EXC engine and I put it in a 1991 TS 200 frame. I did this when the TS 200 calved on me the second time in one year So instead of dumping all the $$$ into the anemic TS engine, I put in a KTM engine. The nice thing with this build is that the TS is street legal, so now I have a fully street legal KTM two stroke. Here is a video of the build that I did: http://www.youtube.com/watch?v=UxFqySg0L6A Sorry for hijacking the thread, just wanted to add my build in here as well. Congrats on the successful build. Again, very nice and clean!!! __________________ TS 250 KSM

12-08-2012, 11:48 AM	#92
backdrifter Wannabe rider Joined: Jan 2005 Location: Belleville, IL Oddometer: 1,308	Incredibly cool project, jar944! I did something fairly similar years back with a KTM 550, but rather than swap frames, I just modernized the suspension, body work, and just about everything else. That 550 mill was a beast. I really wish I hadn't parted with that bike now, but such is life. I'm having fun living vicariously through your thread! Here's a pic of my old girl (let me know if you want me to remove the photo if you find it disruptive). Thanks for the great read! __________________ "We are very good at preparing to live, but not very good at living." -Thich Nhat Hanh 1973 BMW R60/5 backdrifter screwed with this post 12-10-2012 at 07:23 AM

12-10-2012, 07:23 AM	#94
backdrifter Wannabe rider Joined: Jan 2005 Location: Belleville, IL Oddometer: 1,308	Thanks for the kind words! The plastic conversion certainly made it look modern, but it was the CRF front fork conversion, the custom Ohlins shock, and the balancing, polishing, and porting (my builder estimated 75 hp - I have no idea, but it was too fast for me!) that made it a blast to ride! Keep up the good work, your bike looks amazing! __________________ "We are very good at preparing to live, but not very good at living." -Thich Nhat Hanh 1973 BMW R60/5

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: .
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

01-04-2013, 01:53 PM	#102
aaronc70 Gnarly Adventurer Joined: Jul 2007 Location: Knoxville, TN Oddometer: 105	[QUOTE=jar944;20394801]You can see the double bend in the bottom of the cradle in the article pics. That only occurs on the 250sxf OH, OK, got ya, thanks!

01-09-2013, 08:11 PM	#103
aaronc70 Gnarly Adventurer Joined: Jul 2007 Location: Knoxville, TN Oddometer: 105	I know previously you said the 2011/2012 450SXF frames should work just as well as the 07-10 frames. Do you have any idea if the 350 SXF/XCF frames would work as easily or would frame bending, cutting, etc be required? I'm not sure if the 350 motor itself is closer in size to the 450 or 250.