That cut away saw takes all the mystery out of the build and provides a clear picture of all the mechanical functions. Very nice 👍👍

I think it's comical that people would get snotty with you over this. You say in almost every video that you do this for fun, and do it just to teach people what you have learned over the years. So THANK YOU Tinman for teaching us, I've learned so incredibly much from you man! I ported my first saw because of you, did up my MS460 and she rips all thanks to you!!!!

All know is I'm thankful for all the info you share with us I split the cases ported and piped my 372 from watching your videos and lightened the piston she ripps now lol

@tinmanssaws

Ай бұрын

You're welcome, that is 100% why I do this.

This is the same principle, crank angle, why a stroker engine produces higher torque with a longer rod, say going 6.0” from a 5.7” rod with the same stroke. Very well explained Tinman.

@tinmanssaws

Ай бұрын

I tried my best to explain it. I appreciate the feedback

Cutaway model is awesome for showing concepts 👌🏼

Ive learnt so much from your channel. Just finished doing my first 372xp. bottom end and ported top end too. thanks to your videos!. Keep'm coming - they're so helpful. Cheers from NZ

You're popular in the motorized bicycle community... I would love to see you do an Avenger 85 or MS 660 on a beach cruiser 100%

The Tinmaster😎 This is awesome info, thanks man!

Thank you Tinman, I've been wondering about this and hadn't quite figured it out. Showing how this works on your cut away really helps!

Interesting... indeed.... through in a knock off crank and who knows where you could end up. Wonderful insight, never thought of the cylinder shifting on the case. Thank you. TC Mahalo Tinman🤙🤙🤙

That's pretty wild tinman. But it does make sense when moving the cylinder forward that it would affect the effective throw of the rod. Still crazy though

Love the cutaway! Definitely helps to be able to see it when one cant quite visualize something👍🏻

UPS is delivering my husky 550xp mark2 Today ...I'm really excited it's my first brand new saw ever . I've always bought used.. I think I heard that tinman wants to Port it for me 😃

Awesome video Tinman I really appreciate all of the knowledge you share with us and the time you take to make the videos to share that with us. Thank you!!!

Yeah it's called an offset crankshaft. It's not inline with the wrist pin on the piston. Some motorcycle engines do this on purpose to achieve different power bands and dynamic balances.

Hi Tinman , love your channel. Quick suggestion for next time you do a video like this. Mount the timing wheel facing the piston. Cheers!

Does it zero out on top dead center after you moved the cylinder

@tinmanssaws

Ай бұрын

I'm glad folks like you are asking questions this video was made for that reason. I will make a.follow up video on this.

@waydehamm7928

Ай бұрын

I was waiting for the piston stop to go back in too see also

@llewisiv

Ай бұрын

Yeah, wondering the same thing, if you re-zero do you still see this. On to the next video to find out.

Great explanation.

Thanks Tinman! Generally I don't worry unless the timing deviates by more than 1 degree when checking both directions. If they're off by about 1 degree, I assume I can average the two numbers.

When you move the cylinder forward you have to adjust TDC

It's insane that people get wound up over this, there are a ton of videos on youtube explaining it. They clearly haven't done any research and are just shooting from the hip. The Driving 4 Answers channel does a really thorough and in-depth video explaining the phenomenon and covers why rod length matters even between engines with the same bore and stroke. Fortnine also covers it several times when explaining secondary imbalance in various multi-cylinder (motorcycle) engine designs.

So you could shave the piston skirt to increase intake opening duration without changing exhaust timing, or transfer timing.

@tinmanssaws

Ай бұрын

Yes

Very insightful, thank you. Weather sounds about the same as the UK and I'm a gardener so not great for me either😁

@tinmanssaws

Ай бұрын

We used to have a giant garden but have scaled back since having the wee one.

Nice job tinman very interesting 👍👍

The old offset bore and piston trick ? used in auto engines a lot

@tinmanssaws

Ай бұрын

Shhhhhhh lol

How do you think that would affect engine rpm?

It the cylinder is not perfectly centered over the crankshaft, if it is fore or aft, you can and will get different timing numbers on opening and closing.

You are having the same 💩 weather edmonton has, I'm ready for warm dry weather and cold beers

Watched the 026 Stihl vid last night, decided after work today, tearing apart my 036 Pro, it won't run right. Took it down to the chassis, I have the smallest pin hole in my impulse line it won't hold air. And my rubber intake boot is original. While I'm here, doing a base gasket delete and already did a muffler mod. Hope I found the problem.

@tinmanssaws

Ай бұрын

I'll bet those are your issues.

Wouldn’t it be easier to just move the camera!! 😂🤣

Hello TinMan

@tinmanssaws

Ай бұрын

Hey buddy

Thanks tin man

@carl4130

Ай бұрын

I’ll leave this stuff to the knowledge people love watching your videos but I’ll just run stock I probably will stuff it up thanks for all your videos

Why would the cylinder move unless it's been on and off a lot, and bolt holes have gone slack🤷🏻‍♂️ or am I missing something 😂

@tinmanssaws

Ай бұрын

The cylinder doesn't move, crank center line can be off during the manufacturing process which is the same as the cylinder being forward.

why not print the timing marks on both sides of your timing wheels?

@mucccvhorob4596

Ай бұрын

On most applications for these wheels you cant see the back of the wheel. They are not made just for chainsaws.

No that’s not how you do it but it’s very close

🤔🤔

How's the Tinman and family

Fascinating. I say trust the math, question the science.

Shouldn’t you rezero after moving the cylinder?

@tinmanssaws

Ай бұрын

That's a good question.

@mach5407

Ай бұрын

Yes, because the wrist pin is no longer directly in line with the crank journal and connecting rod journal at the former “TDC”

You used the wrong cylinder half I believe. The exhaust and intake are reversed. But you may already addressed this.😊

@josephrheaume8386

Ай бұрын

Actually you can just use the other crank half.

You have just made a Desaxe engine by moving the cylinder and yes the numbers will change