this is an absolutely awesome idea for a diy case cutting tool. well done man, well done!

Wow, this took me back. I've done similar mods on Motobecane AV7 cases but because of their size I was able to make jigs and do this in a lathe. Your research and explanation of engine case differences was spot on. I took screen-shots for my notes. Great vid, thanks!

It's always amazing to watch someone work that know their shit and this guy definitely knows it. He seems to be a wealth of knowledge just amazing!!

amazing in depth information. appreciated

Very nice man I am amazed that actually worked I was thinking of doing a stroker on my 1e40qmb motor but was a bit worried about what you have just solved to the lathe I go and after the drill press will give it a shot I got 2 spare motors to play with so this should be a fun project that may make things much easier than I had thought would be and also much cheaper.

Pretty impressed by your technique! Really good idea you got there. Keep up the good work!

Thanks for sharing . You r the best .

Awesome job! I've been toying with this idea for a while. This was kind of the design I've had envisioned. If I do get something built I would happily send you some pics.

very cool idea, my way of doing it is on a magnetic drill but i still had to make a centering tool for the drill but the finish i great because the drill is very stable

GOOD JOB BROTHER GOOD WORK!!

Amazing tools

These videos are extremely satisfying. And again I am not even interested in scooters but you are very intelligent and I appreciate that...... and you are really good at making videos too!

Well very nice job a lot of effort and planing respect for you to filming everything on top.

Awesome job

Well, I think it's FANTASTIC! The only thing I would add is a worm gear on the top portion shaft?

So cool haha, You really are a god of scooters

You made it good tools Bro wow

Awesome tool!

This is good skill👍

I can't believe you replied awesome you really know your stuff my tool and die is laking I will watch against an follow your recipe thanks

Awesome to see you starting your own machine work! I recently got a lathe (first a 7x10 and now a 9x20) and table top mill, they really open up the possibilities for taking projects to the next level and potentially saving money. if you haven't already seen them, two youtube channels I would highly suggest are abom79 and oxtoolco - there is a goldmine of machining information on them and other channels. if you want you could spec out a different cutter for the boring bar you are using - a larger radius on the tip of the cutter will help with the surface finish and give a better transition when you reach the end of the cut at the bottom of the trench. you can also spec a much sharper cutter intended for aluminum which will greatly reduce the strain on the drill, the impact of the interrupted cut and flex in your fixture/bearing holder.

Appreciate the information, I'm located in Mexico but I used to live in the US, but down here is very very very common to see the Yamaha bws/zuma 100 and the vento Triton and the grand axis 100, if anyone wants any parts and engines I can send them to you in the U.S or anywhere

Wow, you're s genious

great work!

and 1 more tip try creating a bench where you can screw down the whole case i dont like taking chances when a case is twitching like in the end i want that sucker in one place but for the rest great job on designing that nice diy tool for us keep it up

Very clever !

Great guide to the case's you can use. That tool worried out so well. Like you said it you had a drill press it would make it more controlled. Still works fine though.

so cool.!

The site won't load for me so had to comment here... When will you be marketing this? It's brilliant Brent!

Pretty damned ingenious! Square hole and a right hand lathe cutter and you can use the drill press

if u do the shallow side first then flip the bar around, put the cases together and cut the other side, then u will have perfect match at the join and it will be more stable, also use sum kind of flex joint between drill and bar and it remove any side to side input u may put into the drill, works good as is just thought i give sum ideas, cheers

The idea is pretty nice and well made, the only thing i would have changed is the play on the shaft where the bearings are located. The best would have been to make an interference matching, ofc undoable in this case for simple slicing reasons. Btw also with a play matching i wouldn't surpass 0.02mm of play. Just in order to get a better surface finish wout vibrations! anyways great job m8

The fucking god is back!!

Would you mind if you make 1 more cutting tool like your for sale?

Hey I am working on a zuma that I'm having trouble with the 90 cc build and machining... Please reply so I I can ask u some questions... U are the smartest scooter mechanic on the web

hey i like to know if i need to mill my case on my linhia 49cc. the case number is 1e50fm ? and 8 more number under it that is 50100012. thank you if you could get back to me

With the Support bearing and Set up in a drill press that Tool would work almost perfect!

Thanks for all your info so far, very helpful and thorough. My question is...when you build a stroker with a bbk Ac or LC, do you go with a 12mm wrist pin crank and bore kit or stay with the 10mm?

pod jaki wał to robiłeś ?? nie umiem żadnego wału o większym skoku znaleźć :( i co to za cylinder ?? kiedyś miałem 103cc to chyba to ale nie wiem

Fantasic info Dude. Keep it up. Question for you. Have you ever done a clip on putting the stroker crank into the cases once you have machined them?? I'm just wanting to make sure I know all there is to know about how to do the port timing correctly. Any help would make you a god amoung scooter riders. Cheers

Simple idea. Put eg a bike wheel etc Instead of drillpress lowering handles...you then have a much larger diameter and can lower in much smaller increments for a finer cut.

Sir can i ask something is there any difference between the conecting rod of jog 90cc and 50cc engine

hey, the sprocket seen in this video, has same spline as JOG50 CY50?, being in Australia im not familiar what models these sprockets come from. Cheers

Its great tool try on getting your bench press drill fixed so it go in reverse which is going to give you a better grip on lowering your bit finishing it off is just with some sand paper round the 500 just to give it that polish finish but yeah great tool takes away the time you would spend on doing it manually with a dremel

I have icebear maddog clone 49cc 4storck 1p139QMB 50cc is that a 50cc long case it has the fetty tires

That’s what I should have made to enlarge my CVT case instead of a few hours of using a rotary burr. Maybe next time I’ll try and do something like this for the inside of the CVT using the existing clutch shaft hole/bearing.

Where do you get the parts to build the parts for a 90cc 1e40qmb

Could always touch it up with a rotary tool and a flap disk after machining it

Apart from increasing the displacement, are there other advantages for strokers? I may think at better yield or torque... I have just did my first upgrade of a stock 1E40QMB-2 to a 47 bore. By the way, I have no idea what the "-2" from the mark of the engine stands for, it's mounted on a ZNEN ZN50QT-19C that I acctually find nothing about. :) And I was thinking to upgrade the crankshaft too... Thank you for all the videos and instructions, amazing DIY channel!

Will my bearings and crankshaft rust if i'll use freezing-spray to install the bearings and crankshaft?

genius

Can I put a stroker crank on my kasea 90 without cutting? if so what size?

How much would you charge to build the boring bar set up.... great idea. If u built them in sure there’d b a market. I’d be willing to buy 1

You should import yourself an Aerox. That way you already have all the good stuff like front & rear disc brakes and liquid cooling and also a nice body style like lots of fairings and aftermarket suspension and engine kits available for it and 13" wheels STANDARD. so you aren;t chasing your tail upgrading parts that it already has. I could help finding one locally if you wanted to import one

y not make s slotted guide for the milling bit on a die grinder so the grinder moved an a fixed area

Good afternoon great invention I would like to know if you will make it to sell it and if you do how much you will sell it I would like to purchase one very interested in one of those thank you very much I hope I hear from you thank you I appreciate it.

What would you charge to do this ? Dont need it just wondering

Is this tool available for sale

Can you make me a case cutter more than happy to purchase I own a Vento Triton r4 mint condition 78 miles on the dash going big cc max possible

fucking good idée man respetc nice

i already see a aerox bb kit diy in the near future

How much to make 1. For aale

How do u make the carbite cutter drop automaticly downward?

You could of used the cover with spacers as the tool support.

You have contact info had a couple questions

Can I buy this tool. I really dont want to take my cases to a machine shop lol

nie ma żadnego wału do kupienia z tej listy quadów :(

Friend, I would like you to manufacture that tool for me. I would pay whatever I am interested in making my engine bigger with a Carrera 44 Crankshaft.

i live in south america and dude there are crankshaft just wastinh here there like stones lol

Friend, I would like you to create this tool for me so that I can raise the crankshaft stroke of my motorcycle. I will pay what you ask

Would you consider maken me a tool

@thisoldtony can help you with this project

Will I'm new on this and on learning SSI disability

1pe40qmb...... That's what I got. I'm looking to build it to the best it can be

Please

You should spinn fast when cutting aluminium. And you should Never touch the cutting tip against metal if your not spinning the drill. Because you Will ruin the tip and it Will get doul. Its pretty much in destructable when your spinning

holy shit youre cutting huge chunks/strips off,better off a diamond grounding tool?

that's using your noggin

Get clear eyes

first