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sawtalk81

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i mean someone to do a stroke crankshaft that has had success
 

Deets066

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I don’t know anyone offhand that has done one. And the guys that have, usually don’t just build for anyone.

That being said there are some guys on here that are capable.
 

sawtalk81

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is that for weight? couldn't you run an 026 topend? in the same 45cc class how would they know?
 

sawtalk81

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i have my ears out now for a 346xp 350 351 353 Kevin is also looking
 

drf256

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I’ve got a 46mm jug off an 028S fitted to an 026 case here. Destroked with a standard 024 30mm crank, it just makes class that includes the NE 346.

It currently has an 034 piston in it. The head has been cut for 200 psi.

It’s tricky. The timing came out odd from the swap.

It’s just sitting. Never got around to finishing it.

The 346 is simply a better design for racing. Very tough to beat a quad with a dual port saw.

Also did a few 44mm 026 with a 246 piston and fingers with an 044 carb. Within class rules, but I don’t think it can come anywhere near a properly done race 346.

Here’s a place for bearings and balls:
https://www.ortechceramics.com/products/ceramic-ball/zirconia-oxide-ball/

I was gonna build my own, but it’s a gamble and the balls aren’t cheap. They are also a different diameter than the stock steel balls you will find in the donor bearing because of the different expansion coefficients between the zircon balls and the steel ones.

Jasha (aka Treeslinger) did build his own bearings which he said outlasted regular steel bearings by 3-4 fold. I got this info second hand, but the application they lasted for was professional falling/logging.

Edit
It’s been a while, but I believe it was Silicon Nitride, not Zircon, that is recommended for saws. I’ve been out of this thought for a while. The company makes the full bearings you would want.
 

sawtalk81

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I’ve got a 46mm jug off an 028S fitted to an 026 case here. Destroked with a standard 024 30mm crank, it just makes class that includes the NE 346.

It currently has an 034 piston in it. The head has been cut for 200 psi.

It’s tricky. The timing came out odd from the swap.

It’s just sitting. Never got around to finishing it.

The 346 is simply a better design for racing. Very tough to beat a quad with a dual port saw.

Also did a few 44mm 026 with a 246 piston and fingers with an 044 carb. Within class rules, but I don’t think it can come anywhere near a properly done race 346.

Here’s a place for bearings and balls:
https://www.ortechceramics.com/products/ceramic-ball/zirconia-oxide-ball/

I was gonna build my own, but it’s a gamble and the balls aren’t cheap. They are also a different diameter than the stock steel balls you will find in the donor bearing because of the different expansion coefficients between the zircon balls and the steel ones.

Jasha (aka Treeslinger) did build his own bearings which he said outlasted regular steel bearings by 3-4 fold. I got this info second hand, but the application they lasted for was professional falling/logging.

Edit
It’s been a while, but I believe it was Silicon Nitride, not Zircon, that is recommended for saws. I’ve been out of this thought for a while. The company makes the full bearings you would want.
thats saw porn at its best. thats a mean set up i was thinking about building a 029 with 039 top wnd this spring just as a wood saw. a guy is selling a 450 do you like that model
 

sawtalk81

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I’ve got a 46mm jug off an 028S fitted to an 026 case here. Destroked with a standard 024 30mm crank, it just makes class that includes the NE 346.

It currently has an 034 piston in it. The head has been cut for 200 psi.

It’s tricky. The timing came out odd from the swap.

It’s just sitting. Never got around to finishing it.

The 346 is simply a better design for racing. Very tough to beat a quad with a dual port saw.

Also did a few 44mm 026 with a 246 piston and fingers with an 044 carb. Within class rules, but I don’t think it can come anywhere near a properly done race 346.

Here’s a place for bearings and balls:
https://www.ortechceramics.com/products/ceramic-ball/zirconia-oxide-ball/

I was gonna build my own, but it’s a gamble and the balls aren’t cheap. They are also a different diameter than the stock steel balls you will find in the donor bearing because of the different expansion coefficients between the zircon balls and the steel ones.

Jasha (aka Treeslinger) did build his own bearings which he said outlasted regular steel bearings by 3-4 fold. I got this info second hand, but the application they lasted for was professional falling/logging.

Edit
It’s been a while, but I believe it was Silicon Nitride, not Zircon, that is recommended for saws. I’ve been out of this thought for a while. The company makes the full bearings you would want.
how much did you have to de stroke 024 crank?
 

sawtalk81

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I’ve got a 46mm jug off an 028S fitted to an 026 case here. Destroked with a standard 024 30mm crank, it just makes class that includes the NE 346.

It currently has an 034 piston in it. The head has been cut for 200 psi.

It’s tricky. The timing came out odd from the swap.

It’s just sitting. Never got around to finishing it.

The 346 is simply a better design for racing. Very tough to beat a quad with a dual port saw.

Also did a few 44mm 026 with a 246 piston and fingers with an 044 carb. Within class rules, but I don’t think it can come anywhere near a properly done race 346.

Here’s a place for bearings and balls:
https://www.ortechceramics.com/products/ceramic-ball/zirconia-oxide-ball/

I was gonna build my own, but it’s a gamble and the balls aren’t cheap. They are also a different diameter than the stock steel balls you will find in the donor bearing because of the different expansion coefficients between the zircon balls and the steel ones.

Jasha (aka Treeslinger) did build his own bearings which he said outlasted regular steel bearings by 3-4 fold. I got this info second hand, but the application they lasted for was professional falling/logging.

Edit
It’s been a while, but I believe it was Silicon Nitride, not Zircon, that is recommended for saws. I’ve been out of this thought for a while. The company makes the full bearings you would want.
this build have you started work on again? would you sell this project?
 
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