Making of motorcycle camshaft - Honda TRX 350cc

[@buildurtruckurway9118]

I Worked in a small engine shop that took old cams and welded big blobs onto the lobes and would make a custom grind. The machine was hand built and used a series of bearings on shafts that rode an original cam and they could make adjustments to how much duration and lift they wanted to add by simply turning a few screws that lifted or pressed the riding bearings. it was attached to a grinder to bring a rough shape back to the lobes then a series of cutting tools would go to what you set the screws at on the bearings, then they would polish the lobes on the same machine with a modified belt grinder that rode the same guide machine. It's amazing what some of the old timers would come up with. They were the true mechanics and machinists that actually fixed a part not just replaced it.

[@Ever443]

Same here. We raced karts in the 80's and 90's and we ground our cams the same way. We built a "copier" that actually ground the lobes with a bearing mounted motor with grinding wheel that was water cooled. I would grind the correct taper so the lifters would rotate correctly. Could adjust lobe separation, duration etc. by some adjustment screws. Won a ton of races because we had cams that others could not get. Good times

[@PaulXchannel]

👍

[@jeffflanagan2814]

I would love to see that machine in action!

[@rkprecisionproducts8575]

@@Ever443 dear sir, I increased the duration in a camshaft but the taper (in stock cam) you mentioned that I can’t get while increasing the duration, so my cam make tapping noise and loss in power. Advise me how can I rectify. Can I get your WhatsApp number if you wish. Thanks 😊

[@dc6233]

As a home machinist and because you work on ATV/Dirt bike parts, I'm often depressed after watching your work. I'd so love to be able to do a small fraction of what you can, your work is amazing!! That's the cam grinder you made to fix a 5 valve YFZ head or something awhile back, I guess it comes in handy!! That cam you made is either exactly the same or very close to the ones used in my Honda ATC350X, same motor. Those 350D or 350X cams if in good shape used are selling for just about 300$. Megacycle or Webcamshafts will make us whatever we want but they often don't have any cores or it can take months to get them made; They have to cater to their Pro Motocross racers first. I'll have to watch your rocker arm video next, that's another part we cannot buy and they are very expensive even in used form. We can get old ones hardwelded and ground for about 200$ or billet for a bit more $$. I gotto learn from a toolmaker for about a year, he was awesome but it wasn't enough time. I sure wish I were your neighbor, but then you'd wish I weren't your neighbor 😁

[@petegkSalonika]

you need to buy expensive equipment friend, the shaping of cam knobs are been made here by cnc machine !!! all those machines he uses here are too much expensive for home use,, .ALSO there lot of work behind the camera for digitizing the original part and then programming the milling CNC machine ....

[@The_Home_Pros]

It’s amazing that it didn’t do damage to the cam journals which is a very common problem on the older Honda’s like this and the fourtrax 300, I actually have a video of one on a 300 on my channel. You are the best machinist on you tube that works on these engines by far!!! Love your channel and work!

[@samanthalocklear5745]

He one of the top 3

[@mikemalloy1681]

You are so far above my skill level that I am in awe of your ability and work.

[@xj35s]

How about showing how you did the second lobe without chewing through the top lobe or sprocket carrier. .Very handy skip past the only info I needed to see.

[@rasyamotor1701]

I think the same as you

[@PaulXchannel]

In future videos

[@Guranga93]

I would have used a large enough T-slot cutter or something like that

[@wahidchamper2039]

With t-slot cutter

[@ognjennikolic1384]

Basically skipped the only part worth watching

[@MPenzlin]

Hi, how did you reached the inner cam? You showed only the outer one. Did you reach it with a end-mill with a large diameter and a small shaft? Or with a saw-blade. the marks are looking a little bit like this. Great work!

[@PaulXchannel]

T groove cutter

[@bobvido9875]

Very nice work! 👍👍 The hardening parts is really difficult ,the japanese factories had big problems with it ,according to motorcycle magazines since the 80s. My Kawasaki Z 750 twin was one of them.

[@kennethjanczak4900]

So nice to see you are using the momentum screw on the micrometer, and not the big barrel when you are measuring.. Thanks for taking the time to make the video and share it.

[@johnathanmandrake7240]

You probably could've used the old one, but now you've got a spare. And it was a high quality job. From one machinist to another 👍

[@markdouglas5542]

Reminds me of the old xr250, they had issues or the issues owners faced if they couldn’t be bothered to change the oil and filter and check valve clearances regularly . Result was worn out cam and rocker arms. Great work , joy to watch

[@paradiselost9946]

friend had an xr200r... snapped a lug off the camshaft, snapped three chains. chewed two sets of valves. snapped a pair of rockers. snapped the camshaft. yeah. that was a lemon... never had anything that determined to not run... no reason for it, everything specced out... but damn, it grenaded after about ten minutes, everytime...

[@ryebis]

thanks for being considerate and muting audio in the appropriate places :) this is an awesome demonstration of skill, cheers!

[@heripriyanto0]

Saya alumni teknik permesinan sangat takjub dengan pekerjaan anda ini, hebat bro! 👍 Karena saya sudah lama tidak mengoperasikan mesin-mesin tersebut, & sekarang saya sedang bernostalgia

[@pyarelalverma9717]

पहले तो ईसमे कटर मशीन ‌बनाने का दीमांग ही बड़ा मशीन ‌है, फीर ईस‌मसीन‌को चलाने ‌वाला का भी दीमांग ‌एक‌ मशीन है,‌ वाह भाई ‌बहोत ही ला जवाब और अच्छी लगी ये , धन्यवाद जी 👍🙏🇮🇳🌷🇮🇳 जयहिन्द भारत के साथ 🙏🇮🇳🌷🇮🇳🌷🇮🇳🌷🇮🇳

[@jamesmihalcik1310]

Oh man, that lobe grinder was the icing on the cake! So, satisfying to watch the transformation. Fantastic.

[@hu5116]

Great video! BUT, you missed a step. A step of keen interest. How did you mill the SECOND cam? You would have to mill UNDER the first cam on the end. I suppose you might reach with a T shaped mill tool, but that would have been interesting to see. It would have also been nice to see the heat treatment, but that's ok since there are lots of other videos on that. Anyhow, a beautiful job! Thanks!

[@PaulXchannel]

kzbin.info/www/bejne/bpfQnoWGg7VmaK8

[@hu5116]

@ aha! And a slitting saw no less! Thanks for sharing that!

[@mischi7920]

I'm not very good with my hands, I'm more of a head person. However, your work fascinates me and I really enjoy watching it. How many hours did you have to spend creating the camshaft with planning and everything?

[@PaulXchannel]

Thank you for watching. I will show you more in the new video. . . It will come soon.

[@mattcyr3342]

Question how the hell did you cut the lower lobe on the miller?? Thats crazy. Awesome work

[@PaulXchannel]

T - grooving cutter

[@richard2218188]

@@PaulXchannel That's the part that I really wanted to see.

[@lecnac855]

Eccentric,off set centers or an reciprocating grinding attachment hydraulic cross slide among many other ways though this is easy to build.

[@patrickmartinez3217]

@@lecnac855 couldn’t do it with an offset center. It’s not a round detail.

[@tylerstyve5637]

That question is the only reason I clicked on the vid. To try and learn a new technique. 😥

[@anthonyturton8091]

Hi very interesting thanks. I scrolled through comments so I wont ask you about cutting second cam . but would like to know details of the hardening process. I was also surprised that happened at that stage in machining. could you explain why please.

[@i3l4ckskillzz79]

The hardening has an impact on the tolerances of the part. That's why in most cases the part gets harden than finished to spec. The hardening goes into the surface that means even after the finish the surface stays hard.

[@Ivanesquevan]

Amazing work Paul, felicitaciones!. I need ear that trx running. Why not show as the process of hardening?, thats is so interesting. And how you make the second lobe of the camshaft?. Thanks!!!

[@charliebaileyandloganberry7557]

If I were to do that, I'd machine the bottom lobe with a shank mounted milling cutter. Like something you'd use to cut an internal groove on a mill, just bigger and beefier. As long as you're using minimal step down, any cutter set up like a t-slot cutter would work. Can't imagine any other way, so my best guess would be he did something like that.

[@PaulXchannel]

T - grooving cutter

[@pinocolada4254]

i've got a '86 Honda magna 700 bobber that i will rebuild this winter. now i hope the heads, valves and camshafts need to be replaced. been a cnc machinist, still have access to them, and have a manual lathe and mill. sounds like good old fun😆

[@RobertNantyffyllon1965]

Great video and skill level. How did you determine the angular offset for each cam lobe to model in CAD? On the cam grinding you were hand feeding that in for the cut? How long did that take to perfect that type of skill? 😊 Impressive.

[@AxelRiou-u4x]

Well done i'm impressed ! At the moment of CNC milling u cut the video just before the second cam I wonder how you mill the second cam its look like no way with this machine

[@PaulXchannel]

T cutter

[@michaeldunagan8268]

OUTSTANDING! A 1986 Kawasaki 454 LTD I purchased has more and more surprises the more I tear in to it. Kawasaki does not show any camshafts for this bike. Used-how do I know if the are any good? I could use your services ...just not sure if I can afford them...

[@ni_wink84]

This seems to be a common failure on these quads, just watched another KZbinr with the same issue, granted he didn’t fabricate a brand new cam like a complete champion… this was awesome to watch

[@travisray139]

oil filter gets installed backwards, leading to oil starvation

[@joshclark44]

Is that camshaft grinder freehand? It would be cool if you had it follow a 3d printed cam as you rotate it around so its always at the right distance so you dont accidentally undercut it or something. Probably not needed given that you were still able to do it but would add an extra safety measure

[@PaulXchannel]

🧠👍

[@ukaszk647]

Man, you're awesome. You're my hero 😆 love to see how you work, Im trully impressed. Some of parts you have repaired were just a trash before you started. Greetings from Poland!

[@yodasbff3395]

The shop made cam grinder is really slick and it looks like it takes a very skilled handle to operate it, nice work. 👍

[@serhiikrupskyi2954]

Hi, nice work. I know factory uses Carburizing to make the metal surface of the camshaft harder and more wear resistant. Did you do something like that?

[@PaulXchannel]

Thanks. Yes i did.

[@bb21again.67]

How on earth do you free-hand a cam profile? Rocker arms build up and machining?

[@jsincoherency]

How did you mill the second cam profile? Obviously it can't be done from the same orientation as the first one. Is there clearance for you to mill the second profile from the otherend, without hitting the flange?

[@peterszemeti7387]

Same question😬

[@OddsandEndsMachining]

T slot cutter?

[@PaulXchannel]

🥳 🍾 🧠 👍🏆

[@coolhandluke1503]

I was looking for this comment

[@coolhandluke1503]

@@PaulXchannel it has the same marks as the first one did you use some kind of oversized stepped bit?

[@Ujeb08]

so was it just feel that kept the right pressure of the wheel in contact with the lobe? It looked good .

[@PaulXchannel]

Yes

[@philipwoodall3066]

Very interesting. Possibly I missed something but you didn't show how you CNC machine the inside cam? Thanks for taking the trouble to do the video.

[@PaulXchannel]

T cutter

[@philipwoodall3066]

OF COURSE !!!!! THANK YOU

[@janhoogesteger4789]

Perhaps you could explain how the lower lobe was machined pn the same set-up???? I jave copied m.cycle cams similar to these and each lobe has been copied from a master lobe using grinding to generate the profiles...also the follower pads appear to require some stellite 12 and better lubrication

[@PaulXchannel]

kzbin.info/www/bejne/bpfQnoWGg7VmaK8

[@eamh2002]

The top lobe was machined from the top but how did you machine the lower one to shape? The top one obstructs the cnc machine from using an above mill so I'm wondering about that :o

[@PaulXchannel]

T - groove cutter

[@eamh2002]

@@PaulXchannel Oh okay, thanks! I'm no machinist :)

[@husamettin1207]

First of all, a very nice tribute. What steel is this expertly produced from?

[@PaulXchannel]

42crmo4+qt

[@nchtdiemama7267]

Why doesn't welding the camshaft? Rocker arms welding in the last video was awesome. Is it not possible welding the camshaft too?

[@SeaWolfEntertainment]

Did you do the Annealing your self? Would like to see a video on the annealing and hardening process.

[@jeremyhoggard5322]

Turned out great. What cutter did you use to reach the undercut on the second lobe?

[@PaulXchannel]

T cutter

[@denismzs]

Great job! I am wondering how second lobe was milled since it is partially covered by first

[@PaulXchannel]

T cutter

[@mutechpak5089]

Just loved the effect of 16:12 . It made my day happy 😁.

[@shermangriffin2722]

Nice work man. I have a guy asking me to make a cam for a Honda ATC 350. I will be looking at this for setup ideas. Thankfully hes got a place that will harden and grind it for me, because I don't have any of that machinery.

[@mamanacusa]

Amazing, this all your process? All in house?

[@janduplooy8474]

Awesome job but I am thinking it is so risky to overgrind into the lobes from the base diameter. Maybe not so hard to make a a shop CNC grinder that get it factory accurate.

[@banhammerforever]

как там обстоят дела с цементацией в целом?

[@R.B_B]

Question. This work, great by the way, is not more expensive than buy a new camshaft?

[@stupidbird4U]

Was that improvised cam grinder made up from bits from an old mono-set tool grinder. Milwaukee?

[@alerusso5356]

Amazing video, which steel did you use?

[@PaulXchannel]

16MnCr5

[@squirrelgirl540]

What would it cost a fellow to make a set of roller rockers for a 1987 honda xr600r? If you would be willing to or had the time.the rockers i have are pretty good but i have another valve cover with rockers i would like to have it done too.if you read this comment let me know.because you are good my friend.i watch tons of youtube and your one of the best ive seen.

[@PaulXchannel]

Hi. Thank you for watching. Unfortunately I'm busy.

[@jakebowman3764]

Im moving to california to be an engineer. I am so excited to be able to afford a bigger shop for tools like yours!

[@dimooonz]

все хорошо, но нужна эмульсия СОЖ, и кулачки получается на глаз шлифованы?

[@tommymac4098]

i would have liked to see the hardening process to get an idea of the temperature profile and gas used in the furnace.

[@bcbc8649]

How did the second lobe get cut? Just the roughing out I mean, not the grinding.

[@PaulXchannel]

groove milling cutter

[@bcbc8649]

@@PaulXchannel Ah yeah that makes sense, can reach around the other lobe. Thanks

[@Nico99993]

How did you mill the lower camlobe on the cnc? You dont show it in the video im intrested. It does not look like you could reach it as the upper lobe is partially in the way? Could you explain it please :)

[@PaulXchannel]

T cutter

[@УэфБатькович]

Did they measured the damaged camshaft and manufactured the same? How about to get the drawing fo a new and normal camshaft?

[@shahidwani1003]

Cống hiến hơn nữa trong sự nghiệp của mình. Một lần nữa cảm ơn Đức Phúc và chương trình đã mang đến những giây phút thư giãn này. Mãi yêu!!!❤❤❤

[@MrPnew1]

So are you just manually moving the camshaft in when grinding the lobes? It looks like it and thats some nice feel you have for that process

[@stevewalker2028]

Extraordinary, but wouldn't it have been easier to build up the worn cam with hard facing weld and reground from there?

[@saeedalmajid1202]

Old camshaft isn't repairable?? You regrinde the rough lobes and readjust the variant from rocker screw... As easier way... Great job...

[@PaulXchannel]

The hardness of the camshaft was removed by use.

[@kshysztof9649]

Loved every second ! Although, I'd love to see how did you design the part in Solidworks/Fusion. I do some little work on my own, and would love to learn from you

[@crunchy349]

how did you machine the second lobe without interfering with the first? do you use a mutli-axis mill?

[@PaulXchannel]

Saw tool

[@paulscicluna6111]

How was the second lobe machined? It would have been difficult to reach... with the profile of the first lobe...

[@PaulXchannel]

T cutter

[@batscher61]

saubere Arbeit. aber warum hat die Nockenwelle keine Lager / Kugellager . da ist der Schaden schon Vorprogrammiert also meine 4 tackt motoren haben alle Nockenwellenlager .

[@beemergb]

Nice work , but tell me how you machine the inner cam lobe ?

[@PaulXchannel]

T cutter

[@franz_k6000]

Woow verry nice What cnc machine are you running?

[@PaulXchannel]

Deckel

[@franz_k6000]

@@PaulXchannel Nice i have worked on these too FP2 / 3 /4 (A / NC)? Dialog 2 / 3 / 4 / 11 / 12 / 112 /Contour 2 / 3 ? i need info :) (maybe a video?)

[@jamest.5001]

Could you make a more aggressive cam for a gy6? Or regrind one. Reduce the base circle, give more lift, and duration, a bit more overlap, it's a much more simple design than this one, if so about how much$$

[@johnwalker194]

Was thinking the same thing for my little TL/XL 196cc builds ! Reduce base circle and reprofile for lift ! Check out some of the Taiwan lads, KWT racing I think. They made a similar machine for cam grinding from washing machine motor.

[@josefnozkaCZTnv555]

.... tak tomu říkám Meisterstick👏👏, super👍, zdravím z Czech Republic 🙋.

[@adamcarver5599]

Very interesting and I'm impressed by the attention to detail. But the trx 350 is basically a lawnmower engine in a quad and it took you about 500 hours to make the bits that you can buy off the shelf from Honda for 300 bucks. Time is money!

[@wills5482]

That's a lot of work, does it even worth it for this old quad?

[@stevegreen2432]

love to know how you milled the second (lower) lobe on the cam, as it is overlapped by the top one in places!!! Must be a different set up which you did not show.

[@PaulXchannel]

T cutter

[@lemmonsinmyeyes]

How’d you cut the second lobe?? And just freehand grinding the lobes?

[@ДжедайПотрошитель]

А поверхностная закалка? Азотирование? Интересно, какой у него ресурс будет по сравнению с промышленным образцом?

[@mecarloschavez6281]

you are so close to have it perfect, not sure im a fan of the manual grinding, can you use a profile template and a follower? or maybe a belt grinder ?

[@garymucher4082]

With your abilities and proper shop equipment, you can now experiment with different grinds with lift and duration cams to get the best of everything... Thumbs Up!

[@EnglertRacing96]

blind following the blind.

[@zdenekmlcek5708]

Jste šikovný 👍 Dobrá prace....ještě více mě potěšilo, že ze Slovenska 🙂 Jsem si původně myslel, že je to někde z USA....😂

[@martinmachava6933]

to veľa vysvetľuje zlaté ruky........... To je umenie sa na toto pozerať

[@Froggysrevenge]

But... How did the CNC machine get the second lobe? Wouldn't the first one get in the way? It's not like you could just flip the part over, and the finish after the CNC step doesn't look like it was placed on its side...

[@PaulXchannel]

T cutter

[@billmoran3219]

How were you able to cut the exhaust lobe after the intake lobe ? There ramps are so close and the first shot you were cutting intake vertical (x) but didn’t show exhaust being cut?

[@PaulXchannel]

T groove cutter

[@jaromonkey]

i wonder what was the second part of cam making. You showed only one came beeing made, and how dod you make the second?

[@PaulXchannel]

T cutter

[@josielheringer2319]

muito bom essa máquina que você usa pra dar acabamento no comando foi você que fez?

[@mike97525]

How did you do the second lobe? Was it magic??

[@PaulXchannel]

T cutter

[@KATEKNIK001]

quite time-consuming work, but the results are really satisfying

[@petroslempla362]

Amazing ...... amazing job.....!!! My respect Mr Paul. I 'm waiting like crazy...for the next part.

[@ahmeteren1225]

Eksantrik gayet güzel yapıldı yalnız kam taşlamalar kopya tezgahında yapılmasında büyük fayda vardı bir başka sorunda kamın karşısındaki kollarda da aşıntı vardı oradaki akıntılarında ya yenisi ya da kaynak dolgu yapıp tesviyesi lazımdı

[@hajocave2389]

Nice video, shame we didnt get to see how you did the second cam because I was quite interested in how you did that.

[@PaulXchannel]

T cutter

[@АлексейВебер-б5э]

Как фрезеровали второй кулачок? Который между первым и фланцем? С одной стороны мешает первый кулачок, а с другой флонец.

[@francisamanton1789]

c'est ce qui s'appelle de la haute précision .......! magnifique 🔬🔬🔬🔬

[@j45acp69]

will you be selling these? I know there is a market for them, in particular myself. I have a bad camshaft in my TRX 350 as well.

[@PaulXchannel]

Not for sale

[@cecilforbes3034]

$100 an hr,x 10 hrs bugger that

[@j45acp69]

@@cecilforbes3034 but i like to party.

[@cecilforbes3034]

Like it’s 99 👍🤣

[@allenzackery1639]

Wondering what's up with the threaded flange that rotates ? Thought counter weight but it's threaded ????

[@hardy339]

What kind of chuck are using to hold the round stock on the mill??

[@PaulXchannel]

Hainbuch

[@jeremycable51]

I want to know how you milled out the second cam profile seems like the first would be in the way

[@Cloud-zq8mf]

Great job, and maybe it would be nice to try roller bearing for rocker arm,

Great work! How did you get the worn cam lobe profile? Is it the same as the other one?

[@PaulXchannel]

T - grooving cutter

[@taylorkelley4498]

Random question... Does the lathe you are working on towards the start (~5 min to ~10min) use controlled braking? Does it have a mechanical brake of some type to slow the spindle Or does it use DC breaking (maybe regenerative braking? I dont know what it is called but it is a function of many VFD's and requires a big breaking resistor)? Really just curious, that machine looks/sounds good :) and seems to decelerate at a good rate. I am in the middle of rebuilding my lathe so trying to figure all this stuff out and see what options are out there. If you don't mind sharing I would love to know. Thanks!!

[@chriszenier826]

Why not show how you machined the bottom lobe? That's what I was waiting for! Awesome work though!

[@davidschouten4097]

a video like this realy makes me wonder how such a fabrication process could ever be pofitable. so many actions

[@avatareeng4696]

Excellent interpersonal skill 👍👍👍👍👍

[@MrDarkHorseWM]

How'd you get the difference in angle between the two cam lobes, or is it standard for most cams?

[@MrDarkHorseWM]

And what material did you use?

[@PaulXchannel]

It is in video.

[@gertv6777]

Wow, so much work to recreate a single cylinder cam very impressed

[@davidsantana3912]

Nice work building the cam shaft. Mustie1 has a video repairing the same damage. It was cause by the owner installing the oil filter backwards. Just saying so it doesn’t happen again.

[@ErickLopez-bn1in]

Good bro. I also need one. what is the price for this? thanks and good job

[@PaulXchannel]

Thanks. Not for sale.

[@WickedTRX]

How was the second lobe milled? you can't access it fully from the top

[@PaulXchannel]

T cutter