The design of a new puch cylinder

Jurrian Mulder /

Hello,

I'm new to this forum, but I'm definetly not new to 2 stroke stuff

My name is Jurrian Mulder, I'm from the Netherlands.

I do a lot of tuning for 2 stroke engines, especially puch engines.

Currently I am designing a new puch cylinder, which will have 45mm bore.

I have only designed stuff until now, not casted anything yet.

First 2 pictures are from the first model I made, currently I'm working on version 3.

don't expect many updates through time, I'm doing a engineering study at the time..

Here are some pictures of the things I've done so far.

Schermafbeelding 2020-11-12 114924.png
Schermafbeelding 2020-11-12 114819.png
Schermafbeelding 2021-01-14 150919.png

Re: The design of a new puch cylinder

No intake on the cylinder? What Puch is case induction?

Re: The design of a new puch cylinder

Jurrian Mulder /

well, mine is:

6067c7af-c59f-48f9-8824-ed2d5dd08aa5.jpg
acd6eb8f-fc87-4fa0-a8c5-be6c4aae32d8.jpg

Re: The design of a new puch cylinder

Ľ̷̝̽͒i̶̛̼͑͠ȁ̸̧̛̽m̵̻̟̯̀̅ ̷͎̙̽̊F̶̲̺͑̓ F /

Nice, you may want to change the fin design a little bit if you are casting it, the ends may come out with a lot of pockets. Also on the transfer ports, between the fins and the port add a little bit more metal like the rest of the cylinder. With casting a thin spot like that may cause issues

Re: The design of a new puch cylinder

Cool! Fun to see all this happening.

Re: The design of a new puch cylinder

Overpriced Parts /

Make it for reed induction/reed intake on cylinder, A lot of people don’t want to cut and mod their case for reeds especially people like me who run za50 engines

Re: The design of a new puch cylinder

Looks awesome! Show us some of your previous builds

Re: The design of a new puch cylinder

Tweaker trash /

It’s okay but you never casted anything before and really bizzy at the moment so call it a pipe dream

Re: The design of a new puch cylinder

Dirty30 Dillon /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> Make it for reed induction/reed intake on cylinder, A lot of people

> don’t want to cut and mod their case for reeds especially people like me

> who run za50 engines

He's not making this cylinder for "a lot of people," seems like he's making it for himself.

In which situation, Case induction is a lot more efficient.

Re: The design of a new puch cylinder

Jurrian Mulder /

> Overpriced Parts Wrote:

> -------------------------------------------------------

> Make it for reed induction/reed intake on cylinder, A lot of people

> don’t want to cut and mod their case for reeds especially people like me

> who run za50 engines

Little chance it's going to be on the market, for such a cilinder you should go to heiko tuning (htparts.eu). He's currently producing a puch cylinder with a reed intake.

Re: The design of a new puch cylinder

Jurrian Mulder /

Buttcheeks BUZZARD Wrote:

> -------------------------------------------------------

> Looks awesome! Show us some of your previous builds

Current engine with dynograph

20190418_195900.jpg
Screenshot_2019-03-03-13-55-402.png

Polini 50 puch project. Soon on dyno

20190404_145245.jpg

Re: The design of a new puch cylinder

13 hp 👌🏻 Nice!

Re: The design of a new puch cylinder

Johnny Braaapp /

I'll be keeping an eye on this. Nice work!

Re: The design of a new puch cylinder

Super cool!

Re: The design of a new puch cylinder

Looking forward to these projects!

Re: The design of a new puch cylinder

Tweaker trash /

I much rather see someone start making cnc cases to fit a jog cylinder. It would be simple to design compared to a cylinder

Scooter cater blended into a E50 Tranny

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