We Build An Extreme Duty Go Kart Swing Arm With Reverse Gearbox

Today we start a quick side project for a close friend. We are engine swapping his Gem Car with a 713cc V twin Duromax engine. We will also be trying out a new reverse gearbox that is suppose to handle more power. We build an extreme duty swing arm to get ready for the swap. Check out the links below and don't forget to like, comment, and subscribe for more videos!!!
Parts Used On This Build
713cc V Twin - amzn.to/3OSJ8Ik
780 CVT Pulleys - bit.ly/3lUSbfB
Brake Rotor - bit.ly/2Yg4ib2
Brake Caliper - bit.ly/2Jhnpus
1" Locking Collar - bit.ly/2RFcca8
300cc Shock - bit.ly/38O0phb
1/2" Heim Joints - amzn.to/33MVSd6
Engine Plate - bit.ly/2rxt1KX
Axle Bearings - bit.ly/3xnCPTZ
Axle Key - bit.ly/2weVCXW
1" Live Axle - bit.ly/3ikqvQa
Gear Box - amzn.to/3y2MNNw
Amsoil - bit.ly/3TWtrmM
Merch & Events - bit.ly/33YbmtO
Check Out Go Power Sports for all your Go kart needs! bit.ly/2viX9vP
Parts & Tools used on the channel - amazon.com/shop/redbeardsgarage
Quantum Machinery- Siegmund Welding Table - bit.ly/36PHm6G
- Nargesa CC60 Bender - bit.ly/2xWDVxj
Prime Weld Tig 225x - amzn.to/3L4U3MG
Prime Weld MIG180- amzn.to/3KVUPvn
Amsoil Affiliate - bit.ly/3TWtrmM
Benchmark Abrasives (cut-off wheels, flap discs..) bit.ly/2SENg4f save 10% REDBEARD10
Want to donate without the commitment? - paypal.me/redbeardsgarage
Want to send us something?
Red Beard's Garage
P.O. Box 572
Sweetwater, TN 37874
Facebook - redbeardsgarage
Instagram - redbeardsgarage
TikTok - redbeardsgarage0
Pinterest - redbeardsgarage
Twitter - redbeardsgarage
Instrumentals by Chuki Beats - / chukibeats
-------------------------------------------------------------------------------------------------------------
*********Disclaimer*********
Please do not try to re-enact or recreate anything you see in these videos. We are trained professionals. Red Beards Garage does not take any responsibility for injury's created by doing so.
#RBGKarts #RedBeardsGarage

[@upperroomtoo]

This unit is legit! Your skills have matured so much. It has been a blessings watching this channel all these years.

[@ezmac622]

My son and I love your channel. We watch all your videos. We especially like how clean and family friendly the content is. Keep up the great work!

[@charlesgraham9954]

if i volunteer to help a friend I'm doing more for the spending time with him than the work or whatever it is, now if he asks me for help, i might take money, it depends. like i helped a buddy every day after work for week on his car, because i was excited for him and wanted to help get it going faster for him, not because i want money out of hm, or a favor. thanks for the video, i appreciate you.

[@clayhunna7357]

Awesome content as usual thankypu RBG , good too see a video on these bigger F N R gearboxes . God bless yo”ll

[@thepubliceye]

I like the retangle tubbing suggestion.

[@michaelturner2691]

Best way to take out work for trade. Love to see how this thing turns out. PLEASE keep us in the loop! As always awesome video 😊

[@drmarkintexas-400]

Thank you for sharing 🤗🙏🇺🇲

[@thomasbovenzi3949]

I'm excited to see how that gearbox holds up

[@themulesheriff3009]

I really like this build. Like you keeping the motor stock! It should be better than new buggy with a nice dependable motor. 👍

[@Skiridr22]

Some friends are priceless bruh, when they call I will be there

[@CODOutdoors]

Great job Greg, top notch craftsmanship! Way to hook up a friend!

[@RedBeardsGarage]

Thank you sir

[@ryanwood2093]

Can you all do a build with a divorced gearbox? Torque conterters are cool, but I would like to see how to integrate gears to make a shifter cart. Great Video!

[@rcclassiccrawlers4368]

Heeaavvy duty!! You should see if the guy would be cool with naming it “Overkill”. Have your wife make some cool vinyl stickers from that Cricket. That would be saweet! Nice job on the swing arm assembly.

[@lizzard7473]

Thanks for the tips. I really like how you did the bearing mounts.

[@ashleymongiovi4543]

Honestly as long as we start seeing some more post soon the multiple projects going has never been an issue😂👌🏽 love seeing the Redbeard garage flair❤

[@reddenley9822]

It's a cool golf cart. It would be cool if the plastic on the motor matches the cart

[@twisteddrift5287]

Definitely looking forward to your review of that gear box and the link to those gear box mount plates! Gear box is ordered and on its way!

[@davidowen888]

S'all good Mr. Beard 👌 More is better, especially when it comes to Gravees 😋☮️

[@lloydbaker7099]

Great job and pay back

[@donaldhalls2189]

Certainly made for a few people, I was thinking you were making a miniature rock buggi 😆😅 it looks good and pretty simple, if you know what you are doing, thanks for sharing, all the best to you and your loved ones

[@LunchboxStudios]

I saw that gearbox too. I wanted to get it, but thank you for testing it.

[@keithgoins9646]

Great work

[@PaulThomas-qo9vy]

Nice golf cart build, I want to do a build like that some day too! God Bless RBG & family! Paulfrom S. Central TX..

[@jacintopedraza3962]

Very good quality of your work I love to see most of your videos one day I would like to do something similar to me Go kart buggy It is a Jaguar 200cc 2014 but the engine that comes with GY6 is not very powerful I want something like this that you put together in this video continue like this colo 🔴 that I will continue watching 👍🏼

[@nikdipetta]

I feel as I have watched your fab skills accelerate far beyond my capabilities 😂

[@RedBeardsGarage]

I appreciate it man. It’s crazy how thing that use to take days take a few hours now.

[@saulromero5129]

Damn I wish I would have waited for your brackets on your website. I already made my own.

[@jaredscool1]

Looks damn good!

[@dirtfootracing8788]

I call first dibs on that swing arm assy/engine when the china front end falls apart 🙂

[@ProlificInvention]

This is frickin awesome!

[@tyrelmartin3387]

I really want more information/testing on that FNR gearbox.

[@fredericklogue6566]

Great Job!

[@nicholasthurman2266]

Nice I’m definitely glad to hear their is a new higher horse rated gearbox. I wouldn’t of known if I didn’t watch your vids!

[@princessadventures1285]

Ill let you test that gearbox before buying one im more inclined to a reverse electric motor. Probably depends on kart weight. If its light this grarbox might be ok.

[@transmitterguy478]

I start new projects every day. I can't think of any I have totally finished.

[@ianellithorpe5918]

Love the build God bless RBG

[@jasongrady1278]

Would love to see a video on picking the right belt size

[@rikityrik]

Looks pretty cool, man. I want to watch the rest. From what I’ve seen of your shop it’s come a long way dude! Maybe I’ve only watched old videos. Nonetheless Congrats!👍

[@WJCTechyman]

I don't know what others opinions are but building it to this specification is something I would do. There are times, like this, where overbuilding isn't a bad idea.

[@hankburton2043]

Reel nice Clark

[@jimhewitt1273]

Dyno Test... I have always wondered if adding an additional sprocket for chain tensioning showes any appreciable decrease in output. Another one is when people use two sprockets to redirect the path of the chain. That has to have an affect on output.

[@goose278]

Wow! I remember you guys working on the floor of the garage at your house. You've come such a long way and what awesome content you put out for us to enjoy!

[@generalinformationabuhashe3434]

Good 👍

[@williamowens6610]

Red beard I’m not getting new videos when you up load them. Dang the usedtube is get one over on you. Still one of my top five channels.

[@jamessidebottom9706]

I love watching what u come up with when building things I run demolition derbies which requires me to build a 4 point cage with a halo bar we call it (bar put rear door windows and across the roof) and I find that square or rectangle tubing is much stronger then round i tell ppl that emagine bending a paper towel roll soon as it starts to bend u lose any strength so I ALWAYS use square tubing

[@RedBeardsGarage]

I like it way better. And not having to mess with a bender is even better lol.

[@jamessidebottom9706]

Agreed

[@michaelmerrill589]

Would like more information on different- gear box for forward/ reverse to use on my ez -go golf cart with 420cc & live axle project of mine thanks.

[@michaelmerrill589]

I would like to know How the foreword/ reverse gear box is holding up I want one for my 420cc predator with 40 series cut on it.Thanks for your time and information.

[@electronictim007]

" will never be back in the shop" (paraphrase)...... 😅 Braver man than me!

[@cliffpalermo]

Could make it a hybrid one day

[@RedBeardsGarage]

If I ever find a good deal on a battery pack that would run the electric side and not be too heavy.

[@thorfinsky1427]

Why can't somebody make a FNR gearbox for a 30-40hp motor?????? So maddening.

[@seangilbert3542]

Rpm does. ( Moto Mule ) talks about it on his channel.

[@johnkoelliker8480]

Awesome

[@billmyers8643]

Thanks for the vid, missed your content! Brake ready hubs would be cool if your looking for something to sell.

[@DirtRoadBoyz2]

You da man

[@hargray2]

You at least doubled, if not tripled the HP handling capability of that diff by mounting it solid like that.

[@butchs.4239]

The question is how strong is the diff case. I have one of the old Comet reverse boxes and they were designed with a long enough input shaft so you could support the end of it with a pillow block. An unsupported shaft isn't necessarily a bad thing, but that means the case alone has to handle the loads being fed into it and if you overdo it you can break the case. It'll be interesting to see how this diff holds up as there's not a lot of options for reverse boxes, especially once you're looking for something for big block or v twin engines.

[@vgnope]

Get it boi

[@loyd5074]

Nice

[@matthewdrew6268]

What was wrong with the fwd electric? Use the vtwin to charge a deep cycle and you can have awd when you need it

[@nickpastore598]

Can you please post a review on the reverse gear box?!?! Lots of people want to know how it held up!!!

[@cedhome7945]

You going to be dynoing that beast ? ....I am getting withdraw symptoms I need to know the results of the latest tests 😜

[@brandon-prodigal]

If that reverse works even mostly good I need to know where to get it, been looking for a decent solution for awhile

[@joshblainer2652]

Loving it so far. God I love this channel!

[@jamesmikesell5458]

Four wheel drive would be really cool

[@fm9572]

@RedBeardsGarage, have you ever considered building a flywheel and engine mount kit for the #Duromax 999cc to an OG VW Beetle transaxle? The first 1100cc German units were 26hp, by the time they were importing them to the USA with a 1200cc engine, it was 36hp and the 1300 was around 40hp. A stock or mild build Duromax would easily be able to swap, and no one would know unless you showed them.

[@RedBeardsGarage]

I need to look into that. I have never messed with any VW stuff.

[@fm9572]

@@RedBeardsGarage the transaxle bellhousing has 4 bolts in a circle pattern, and lightened "8 dowel pin" flywheels are available (along with racing clutches). It's just a matter of fabbing the flywheel adapter, possibly involving shortening the engine output shaft, maybe, and a couple of engine to crossmember plates you can cut pretty easily. Compared to the "engineers" in other countries doing similar swaps with angle grinders and hand drills on youtube, I think it would be a piece of cake for you. Anyway, I love your channel man. Keep up the great work.

[@tylerlongo4336]

Where can we get some of those minting brackets for the gear box??? Going to need some willing to pay.

[@RedneckRepairs]

I never realized you could mount the driven clutch component either way on the shaft.

[@atvtheory3151]

You can't mount the driven clutch either way. This is a 780 clutch and the driven is mounted the correct way in this build. Only the Model 30 should be mounted with the spring-side facing outwards. The Model 30 is an asymmetric clutch and is designed to be a "Torque-a-verter add-on to minibikes and other devices using a clutch. The model 40 and above are designed to run with the spring-side inwards. Yes, I know. You see the Model 40 mounted spring-side out with the Go Powersports kit, but that's incorrect. The configuration causes the belt to move inwards on the driver clutch and outwards on the driven clutch and will cause premature failure of the belt.

[@frankmontano1746]

Can you put a link to the parts used on the swing arm I’m building a gem car too came out sick

[@rugratjayden4141]

hey man please do a performance build on the ducar 212 please no one has any videos anywhere

[@igokarts4510]

Extreme duty swing arm now wont you back that thang up!?

[@Matt-qh8lj]

When are the mounts going to be available?

[@melaniehazen3529]

I found out a dish washer makes a great small parts washer dont ask my wife how I know that. Brent Glendale Az.

[@RedBeardsGarage]

😂

[@laurasprowls5333]

Where did u get the spring for the driven pulley so u could mount it inboard?

[@nikdipetta]

Hey! You got the Flywheel with starter ring for duro 420 yet!? The billet job.

[@justinrooks49]

What top speed are you anticipating? Building a very similar project

[@RedBeardsGarage]

Probably around 40

[@justinrooks49]

@@RedBeardsGarage that's kinda my thought as well. I'm using a 670 and the same diff you are as well as a live axle. Keep up the great work, your videos make it so much easier for us weekend warriors.

[@thejames3431]

Any update on these brackets being added to your website? I'm not seeing them.

[@joshwaller6226]

Any updates on how this gearbox is holding up?

[@CarlAncliff-ms8is]

I could do with one off them for my buggy lol 😆 😂

[@rodswim492]

Nice job Greg. Who makes that bender you use?

[@RedBeardsGarage]

Thanks! It's a Nargesa from @quantumMachinery.

[@joshualoredo7128]

Did the reverse gear box work I'm upgrading from a 212 to a 420 duramax

[@rocknrye9273]

It's been a month now, when is the next DYNO series video?

[@fearnobeer-ns3om]

I'm just here with a grinder a Flux core welder trying to make the parts he's making with computer😂

[@laurasprowls5333]

Where did u get the inboard spring for the driven pulley ?

[@ezequielortega2332]

Hi RBG what side of belt you get for the reverse?

[@billboforty6133]

When is road to Horsepower returning?

[@aflawinhumanity11]

Looking at the gearbox specs the ratio for F says 1:2. Does that seem right? Would I then be able to run a sprocket half the size to keep my gear ratio? Thx

[@RedBeardsGarage]

Yes there is a gear reduction in the gearbox allowing for smaller sprockets.

[@jaypach5681]

Where do you get the inboard spring

[@salvadorlopezmann8553]

How did the fnr gearbox work out...

[@pjbarrett1980]

Hello have you added the bracket for the gearbox to your website? I am looking for one and can’t find it and what’s the price

[@randallbaker9055]

I like over kill

[@mistersniffer6838]

Dude, your growing hair on the wrong end!!!

[@elderfogelderfog3598]

How that gear box work out

[@Kiltedwoodsmith]

can you put a 420 predator engine in a rzr 170 ?

[@LuchMobGarage]

Whaaaat what

[@musiclyric6665]

Still waiting for the 999cc street legal motorcycle build

[@Flavorsonlyyy]

Bring back the predator dirt bike plz

[@johnhutchinson475]

what happen to deuce the turbo diesel

[@Inthesdadowofgrey]

Go get a charger rear diff and subframe make it AWD!