Varg rider considering YZ conversion for less weight

So, recent bikes I've owned:
2016 KTM 500XC-W, cut down for road racing
2019 KTM 150SX, MX'd and sumo'd

That 500 was every bit of 250lbs. The 150SX was about 200lbs ready to rock. You bet I could tell the difference between the two hefting them. Hefting a Stark onto a stand, felt like my 500 with heavy ass ice tires on it. I've also done the same test back to back at the dealer, a current 500EXC beside an EX, the EX was more to heft onto the stand, and that stupid sharp billet hand hold on the Varg doesn't help.

I fully believe the Varg doesn't 'feel' heavy when ridden, the 500 similarly hides it's weight well under way too, but I'm not fantasizing the difference in effort to lift one onto a stand vs the other.
We need a pic of that 500 in road race trim, sounds fun.
 
So, recent bikes I've owned:
2016 KTM 500XC-W, cut down for road racing
2019 KTM 150SX, MX'd and sumo'd

That 500 was every bit of 250lbs. The 150SX was about 200lbs ready to rock. You bet I could tell the difference between the two hefting them. Hefting a Stark onto a stand, felt like my 500 with heavy ass ice tires on it. I've also done the same test back to back at the dealer, a current 500EXC beside an EX, the EX was more to heft onto the stand, and that stupid sharp billet hand hold on the Varg doesn't help.

I fully believe the Varg doesn't 'feel' heavy when ridden, the 500 similarly hides it's weight well under way too, but I'm not fantasizing the difference in effort to lift one onto a stand vs the other.
Interesting. I have an MX-1 I rarely use that hand hold because it is stupid sharp like you say. But since Vargs are weighted toward the battery front it is far easier to steady the bike and use the rear tire to hoist it up on the stand. Easier on the back too since you can use your legs to lift it.

Sort of the same with my older WR450 but that bitch makes the Varg seem like a skinny chick... 😁
 
We need a pic of that 500 in road race trim, sounds fun.
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Basic sumo setup, but road race spring rates instead of MX, rear was 95Nm spring, .5 up front, and little me at 155lbs. For those paying attention, the front end is 06 SMR with 8mm wider width clamps. Still have the forks. Raced on a 1.6mi road course. I had delusions of going sport bikeier, started working on a 'super mono' based on a 2016 250XC with a theory of a BRC 500 down the line:

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Still have the modded R6 clamp setup that'll drop into a KTM frame, but didn't finish it because, I found other, dumber ideas...
 
Interesting. I have an MX-1 I rarely use that hand hold because it is stupid sharp like you say. But since Vargs are weighted toward the battery front it is far easier to steady the bike and use the rear tire to hoist it up on the stand. Easier on the back too since you can use your legs to lift it.

Sort of the same with my older WR450 but that bitch makes the Varg seem like a skinny chick... 😁

My 150 I would do a variation of that, from the right side, lock the front brake, left hand grabbing way back under the fender, and lift and pivot on the front wheel to get onto the stand. I can't pull that off with the larger machines. I've done the rear wheel lift, sometimes get sketchy if the front forks decide today is the day they're going to twist on me.
 
Been lurking a bit and think I want to go down the DIY route to replace my Varg due to it's weight. I think I want to stick with electric after seeing how much more seat time I can get riding a woods loop from my house next to a sub division so instead of going back to gas to lighten it up I might DIY a YZ chassis or similar.

Rolling chassis/donor bike -
If you've gone through this, where did you search for one and how long/hard did you have to look until you found one? What should I expect to pay for a clean chassis (no engine or blown engine)?

E parts -
I've seen the predone conversion kits but if I can save a little money and possibly have a better setup for me then I'd go that route. I have a M.E. background and would be able to design my own mounts/brackets and get them made. I think I just need some help on component selection. It seems everyone uses the same QS138 motor, but there are several controllers and new ones/versions popping up all the time. I'd figure out the battery as a last step but would buy a pre made one. Not interested in battery building. I ride my Varg in 40hp so I figure any of the popular controller/battery setups would be work for me. Would this be a good setup? -

EBMX X9000 controller ($1200)
EBMX harness ($139)
QS138 70h v3 - buy from a US vendor or how much can I save buying overseas like alibaba?
Battery ($2500 to be determined)

So besides the donor bike and some customer mounts, am I looking at roughly $4500?

I love riding the Varg on the OHV trails but I'm starting to think it is too much to handle in tighter woods. Since I started riding a few years ago I pretty much only rode fast and flowy OHV trails where I average 25+mph, sometimes 28mph over a 20 minute loop. At those speeds I think the extra weight helps. It handled fine when I occasionally rode MX too.

Now I'm looking at doing some hare scrambles so I started practicing on those type of trails. Besides needing to practice more, I did drop the bike a few times coming out of muddy rutted turns and eventually threw out my lower back pretty bad when picking the bike up on an awkward muddy uphill section. I have pretty good arm strength but the awkward angle and terrain made me use poor technique picking it up. I pretty much never have to pick it up riding OHV trails. I imagine I'll be picking up the bike a few times in a 90+ minute hare scramble.

Just putting this thread out there to motivate me to find a rolling chassis and get started on this project. If I learn enough from it I will probably build an 85 conversoin for me son whose on a E5 now.
Yamaha is building an electric…they are working with electric motion out of France on some of the tech.
 
View attachment 15820

Basic sumo setup, but road race spring rates instead of MX, rear was 95Nm spring, .5 up front, and little me at 155lbs. For those paying attention, the front end is 06 SMR with 8mm wider width clamps. Still have the forks. Raced on a 1.6mi road course. I had delusions of going sport bikeier, started working on a 'super mono' based on a 2016 250XC with a theory of a BRC 500 down the line:

View attachment 15821

Still have the modded R6 clamp setup that'll drop into a KTM frame, but didn't finish it because, I found other, dumber ideas...
That bike is super cool, any advice on lowering like getting the shock and forks.
 
I've never actually lowered any of my bikes? In fact I tend to end up trying to raise at least one end of them for most racing formats I do? My MT-09 the rear is getting JACKED up. :D The SuperMono experiment is the odd exception due to going to a much shorter front end, but even there, the game was to retain as much working height and swingarm angle as possible post conversion.

Forks can be tweaked internally to reduce their working length, resulting in lowering the front, you can do similar with a shock for a PDS bike, or play with linkage geometry as another option if your bike has a link, but either way you're affecting much more than just ride height when you do so... anti-squat, where you are in the leverage curve, you're removing available travel... I'd avoid lowering if possible myself?
 
View attachment 15820

Basic sumo setup, but road race spring rates instead of MX, rear was 95Nm spring, .5 up front, and little me at 155lbs. For those paying attention, the front end is 06 SMR with 8mm wider width clamps. Still have the forks. Raced on a 1.6mi road course. I had delusions of going sport bikeier, started working on a 'super mono' based on a 2016 250XC with a theory of a BRC 500 down the line:

View attachment 15821

Still have the modded R6 clamp setup that'll drop into a KTM frame, but didn't finish it because, I found other, dumber ideas...
Great pic! And nice setups, looks super fun. I'm guessing a KTM 500 road race bike (not supermoto) would be a rare site on the track. Thanks for posting.
 
It's easily doable to lower the KYB's on the Stark though. The conversions kits do exist and are not even expensive. Not even extra work at regular overhaul.

Lowering is always a compromise, one i luckely never had to make due to being an average Dutch guy (183cm/6ft). But in Hard Enduro it can make a lott of sense since tipping over due to short legs issues can be more of a problem than any of those drawbacks you mention.
 
Great pic! And nice setups, looks super fun. I'm guessing a KTM 500 road race bike (not supermoto) would be a rare site on the track. Thanks for posting.
Road race or sumo, it's the only one I ever encountered. A friend got it as an easy to plate woods/ice bike, then got the itch to road race... given we have a motard class and our rules basically allow singles everywhere, he tossed 17s on and sent it. Ultimately ended up a B bike beside an FS450. He had a crash that shut down his riding for a bit, I bought the bike to use as a all rounder and was surprised to see it didn't give up much to the 450s. It is a touch heavier, more gyro effect so not quite as flickable, but on a 'big' road course it didn't matter as much. Classic short track sumo, it'll hang but require more physicality. The other 'downside' to the 500 is no one has really explored hot rodding that motor setup, so if you're going to chase being at the point end of the competitive stick, you'll have far fewer easy bolt ups to squeeze more power out of it vs a 450.
 
It's easily doable to lower the KYB's on the Stark though. The conversions kits do exist and are not even expensive. Not even extra work at regular overhaul.

Lowering is always a compromise, one i luckely never had to make due to being an average Dutch guy (183cm/6ft). But in Hard Enduro it can make a lott of sense since tipping over due to short legs issues can be more of a problem than any of those drawbacks you mention.
'Hard' enduro at my skill level is that small rock or root in my path these days... :D On the road side, there is changes to technique that allow safe control of a bike when you're not as inseem graced as others, even at 5'10" I try to adopt them as just good riding habits. I can see where it's a different game in the enduro world though, I'm curious if the 7/8's machines will start dominating there as batt life and motor power density improve just due to less bike to get in the way?
 
The OP started his question for Hard Enduro use. That's why i keep bringing it up.
In road racing short legs don't really matter.

On the other hand, the misses does fine at 163cm/5'4 on full size bikes. She could use a bit lower though for Hard Enduro, but she does MX and fast sand Enduro on the same bike, so every bit of travel she can get is welcome.
 
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