Yerfdog Spiderbox 420cc Predator

My yerfdog spiderbox heavily modified.

[@stevejette2329]

Beautiful job !!! So often, amateurs graduated from the Ray Charles College of Automotive Knowledge. Like the Yerf Dog we just bought. Yours is beautiful.

[@justinsauer5682]

@@stevejette2329 thanks!

[@scottcountryman6090]

It’s videos like this that make KZbin unique. Love your voice you sound like Batman and tough AF! Love your stuff!

[@justinsauer5682]

Thanks!

[@gavinsmith7224]

This is like go kart ASMR. Putting this in my nightly routine.

[@scottcountryman6090]

That thing is awesome. You’re talented

[@samsgarage1716]

Looks amazing.I can’t wait to finish mine.

[@jorgegonzales878]

I love those seats and the ignition key

[@jasonz7788]

Super awesome build!! Thanks for sharing sir

[@justinsauer5682]

Thanks!

[@jorgegonzales878]

Super nice kart. Can't wait to see it with the lights

[@armandovalencia9417]

Very clean modification

[@davebourdon3258]

Awesome Job! Now I want to upgrade mine.

[@justinsauer5682]

Thanks!

[@wrenchandrip]

sick build man

[@brianswelding]

Looks good, nice work 👍

[@jfabworks2986]

I love the build man im waiting on some parts for my crewcab yerfdog and i put 12 inch atv wheels on my kart and it push them pretty good

[@bonezcuztomz7703]

Great build

[@jasoncaribou9530]

Great stuff , excellent video

[@justinsauer5682]

Thanks!

[@ryanbruce2678]

Very nice ride!

[@menayazzie7765]

Very nice. I have a Yerfdog also. Only have a predator 212 on it now. Looks great. Very clean

[@valentinortiz6936]

Your engine really performance well? I got the predator 212 and can’t move my spiderbox

[@menayazzie7765]

@@valentinortiz6936 Don't have the Yerfdog anymore. From what I remember, I installed a torque converter and totally change the Yerfdog.

[@loswny]

Beautiful 😍

[@ripper1480]

This think is BAD ASSSSS

[@skulltaz2872]

Looks good

[@Hititharderitllwork]

What rear hubs did you use to match the spiderbox pattern? I just saw your other video that you swapped to 4 on 4 hubs. Thanks for posting your build.

[@max27dy17]

Hey quick question I been trying to find some tie rods to go with the rack and pinion but I’m having a hard time finding them. I was wondering if you knew where I could get some at ? Thank you

[@justinsauer5682]

@@max27dy17 I would try these guys bdxperformance.com/products/tie-rod-end-for-yerf-dog-gx150-1pc-1 they are out of stock. call them I know they order from China and their shipments are always off schedule. BMI karts. first places I would check.

[@richardhatt6541]

Very nice

[@cmoney5135]

Good video

[@musclecarshaun9115]

Do you have any more gokarts cause I have a carter car with a 212cc and I just wanna trade it for a bigger one that I can fit in very nicely

[@nicolec7290]

Like the extra fuel tank

[@j.t.blassingame2608]

What did you end up going with for rack boots? I can’t find anything that will work without rubbing on the front bulkhead from having too large an Outer Diameter. I also added 3 notches to the rack in each side so not only do I need that narrow OD but I also need length. I would assume you faced a similar challenge so curious what you ended up finding and if you could share a link. Thanks!

[@justinsauer5682]

Hi these worked perfectly. They are a bit long but they collapse inside themselves. Flexx Boot FB4000 Universal Replacement Rack & Pinion Steering Boot a.co/d/cgINzmF Make sure you buy 2. See my latest video at 1:40 shows an ok view of them installed kzbin.info/www/bejne/aZ7UhWinlJefpZo

[@nicolec7290]

Clean

[@chills1228]

Nice i have a 420cc yerfdog 3203

[@witosarlaw]

Mantap bang...saya juga lagi bikin mini buggy...🙏🙏😁👍

[@RAM7RO_BU1LD3]

Looks really good bro. We almost have the same setup, 420cc, BDX preformance front kit. I went with 14"wheels (23" height) I'll post a video some time this month 👍

[@justinsauer5682]

Looking forward to your video. I've got a few other videos on my yerfdog build. That steering mod is a must!

[@joejenkins5883]

I am working on Chinese buggy, redoing everything. Putting in a 420 w stage 1 kit. I tried to mount a 60 tooth sprocket but unless I cut a bar, I have to use a 48. Think that will be ok? I have 10" wheels, tires are 22 inches.

[@justinsauer5682]

@@joejenkins5883 check out my swingarm modification video it shows how I modified it to accommodate a 60 tooth sprocket. I'm not sure how a 48 tooth sprocket would impact performance. Everything I read said gear ratio for go karts best with a 60 tooth. BMI karts has a calculator you can check out. www.bmikarts.com/Go-Kart-Gear-Ratio-Speed-Calculator

[@dannyavalo3987]

I would like to know what is the price of that beauty.

[@davidmorgan8612]

Nice dude

[@brandonreed9892]

I have a manco 720e build that's similar to this i want to lift the swingarm mounts down 6 inches so I can run a way taller tractor style tire. Have you considered lifting one that way?

[@user-pn1qt4hr5r]

Молодец красава классная самоделка получилась с меня Жирный лайк и подписка 👍 надеюсь что и с тебя тоже с большим Уважением Александр

[@justinsauer5682]

Huh? 🤷

[@j.t.blassingame2608]

Have you found the bdx front shocks to be too stiff? I’ve read several reviews they are stiff, but BDX claims you should only use their shocks with their relocation hw

[@justinsauer5682]

I have not. They seem to work really well over bumps. I'm able to compress the front with the weight of my body then have the front end bounce right back up. The shocks have mechanical adjustment points like other shocks do where you can adjust the the tension on the spring a few increments at a time. I have mine set almost to the lest spring tension which gives it a good amount of travel and smooths out the ride. I can post a video of that helps.

[@TheeDutchRutter]

Whispers: Cool video.

[@МакарСамарин]

Чёткая телега👍

[@teshuvahemmet3036]

Nice 👍

[@armandoochoa4756]

Could you post the link of that axle and also sproket and anything else you used thank you

[@dustinjohnson2116]

Where is the steering wheel from?

[@justinsauer5682]

I found it on offer up. I was just searching for small diameter steering wheels and came across that one. It's 13.5 " in diameter.

[@dustinjohnson2116]

@@justinsauer5682 did it bolt right on?

[@dustinjohnson2116]

@@justinsauer5682 also what size are front rubber tires?

[@justinsauer5682]

@@dustinjohnson2116 here it is www.speedwaymotors.com/Speedway-Classic-13-Inch-Black-Steering-Wheel-w-Holes,43735.html?CSEGoogle&CSE&CSEGOOGLE&gclid=Cj0KCQjw_r6hBhDdARIsAMIDhV-MHVYcRzsZ96F4sUMwaqPS65zVg3JDo-J2vQT9rRVRZtgxpIbDxm4aAmoWEALw_wcB

[@justinsauer5682]

It did not bolt right on. I centered it to the go kart steering shaft plate drilled holes to match the mounting plate

[@jakeschweyen5531]

What size drive pully are you using and how do you know?

[@justinsauer5682]

I'm using 40 series torque converter

[@jakeschweyen5531]

What is the size of the torque converter drive pulley. Is it 5/8, 3/4, or 7/8?

[@justinsauer5682]

@@jakeschweyen5531 kzbin.info/www/bejne/ZmOrh2mGnsibkNk. 3/4

[@anatoly5313]

Pls tell me what wheels your using

[@justinsauer5682]

2 WANDA ATV tires 19x7-8 19x7x8... www.amazon.com/dp/B07PQ4LC9Q?ref=ppx_pop_mob_ap_share

[@ajaxe2149]

Why are you whispering

[@wyattcram4968]

can you tell me what whells are on it and send me a link

[@justinsauer5682]

Front tires 2 WANDA ATV tires 19x7-8 19x7x8... www.amazon.com/dp/B07PQ4LC9Q?ref=ppx_pop_mob_ap_share

[@hiramrodriguez4323]

What's your top speed

[@jakeschweyen5531]

What size gears are you running?

[@justinsauer5682]

10 tooth sprocket on torque converter to 60 tooth axle sprocket.

[@jakeschweyen5531]

@@justinsauer5682 what’s the top speed and acceleration like? I’m about to start this build and I’m just wondering what I should order. I’d prefer more and acceleration over top end speed but if this feels like a hood medium I might just go with this.

[@justinsauer5682]

@@jakeschweyen5531 stock, I would would say top speed 32-33mph. I really didn't test for top speed but did hit 32 riding around in the dirt. It spins the tires easily in the dirt. I have recently removed the governor install breather, rejet, different exhaust new 50lb valve springs. I have not had it out to verify the performance gains. They say don't exceed 5500 rpm or stock flywheel will go boom. If you want more torque, watch my swingarm build video you'll see there is plenty of room to go bigger on the axle sprocket 70 tooth maybe. BMI karts has a speed calculator and other calculators on their website that might be helpful.

[@justinsauer5682]

Make sure you modify the steering, cutting more teeth to increase the turning radius.

[@jakeschweyen5531]

What hubs did you use for the axle?

[@chrishernandez6753]

What’s the top speed

[@justinsauer5682]

I've had it up to 32 mph. Probably won't go much faster than that with stock engine.

[@chrishernandez6753]

@@justinsauer5682 yeah it’s the same speed but u got more hp

[@musclecarshaun9115]

I need to trade my gokart for a yerf dog so bad

[@skygroover6692]

Why's this dude whispering

[@FinalFHE]

Vendame uno por favor! Cómo hago para que me lo envíe?

[@justinsauer5682]

Say what? qué. 🤷

[@oscarface7382]

I HAVE 8INCH RIMS ALL AROUND ..LOL

[@justinsauer5682]

Haha, "all the way around"... the kart.

[@zeynepdeveoglu6824]

Ý

[@فوازابووطن-ع3ع]

مم😂

[@Noah-u2z]

Looks good. Too bad you don’t use it

[@justinsauer5682]

@@Noah-u2z huh, what’s that supposed to mean?

[@justinsauer5682]

@@Noah-u2z did you purchase my go-kart