6401BB Build up.

[Metals406]

Here is a little info on Doug Fir, taken from a website.

Folks hear 'softwood' and automatically think of a stick of butter.

My BIL is from St. Cloud Minn., and had no problem segueing to DF and Larch for firewood.

I can have a firebox full of 5" DF rounds go 12 hrs. easy. . . And my stove ain't all that and a bag O' chips either.

Saw turned out good mang!!

 

[parrisw]

Folks hear 'softwood' and automatically think of a stick of butter.

My BIL is from St. Cloud Minn., and had no problem segueing to DF and Larch for firewood.

I can have a firebox full of 5" DF rounds go 12 hrs. easy. . . And my stove ain't all that and a bag O' chips either.

Saw turned out good mang!!

Thanks Nate. Mostly all I burn is Doug Fir, great stuff. Coastal Doug Fir is harder as well. Hopefully some better vids of the Makita soon.

 

[volks-man]

hey will,
do you have the machinery/capability to machine an offset pop-up to fit that funny dolmar combustion chamber?

 

[parrisw]

hey will,
do you have the machinery/capability to machine an offset pop-up to fit that funny dolmar combustion chamber?

Yes and no. I could offset it in the 4-Jaw, but don't know if I'm good enough to do that. I would need some way to figure out the off set first, then actually indexing the offset correctly on the piston would be a challenge. For your typical work saw, don't think its needed. This saw no popup should be sitting around 170.

 

[timberwolf]

With piston in holder and centered in four jaw set it with the side you want to offset towards indexed to one of the jaws. then back that jaw off the amount you want to offset the popup. slacken the jaws to either side a hair, then tighten the jaw farthest from the offset and snug in the side jaws evenly.

To test out the offset clamp a felt marker in the tool post holder and spin the piston up and mark what the offset will look like to see if any adjustments are needed. You will want to slow it down to do an offset. for a regular pop up I will spin the lathe 1000-2000 RMP with an offset piston just a few hundred.

 

[parrisw]

With piston in holder and centered in four jaw set it with the side you want to offset towards indexed to one of the jaws. then back that jaw off the amount you want to offset the popup. slacken the jaws to either side a hair, then tighten the jaw farthest from the offset and snug in the side jaws evenly.

To test out the offset clamp a felt marker in the tool post holder and spin the piston up and mark what the offset will look like to see if any adjustments are needed. You will want to slow it down to do an offset. for a regular pop up I will spin the lathe 1000-2000 RMP with an offset piston just a few hundred.

Thanks Brian, that's kinda what I was thinking. But the hard part would be measuring the offset of the combustion chamber? Now how would I do that?

 

[volks-man]

Thanks Brian, that's kinda what I was thinking. But the hard part would be measuring the offset of the combustion chamber? Now how would I do that?

either cast it with a pour-in product something like alginate or maybe press some clay in after a coat of non-stick cooking spray.

i'm thinkin......

 

[parrisw]

I really don't know if the time investment to do a popup in this saw will yeild the gains for it? I mean its already ata 175psi. Pretty good for a work saw.

 

[volks-man]

I really don't know if the time investment to do a popup in this saw will yeild the gains for it? I mean its already ata 175psi. Pretty good for a work saw.

maybe not...
but, once you figure out how to do it i'll send you my poulan 3750 p/c for an offset pop-up. i need approx 1mm(!) cut off the piston crown with that dreaded offset. incidentally, i need nothing cut off the cylinder.

when i saw you were foolin with that dolmar cylinder it got me thinking that you might be the guy to turn the piston for my low-budget-probably-gonna-fly-apart poulan.

 

[timberwolf]

Yep, second the modeling clay, I find I am using it more and more to measure things in hard to reach spots.

 

[parrisw]

maybe not...
but, once you figure out how to do it i'll send you my poulan 3750 p/c for an offset pop-up. i need approx 1mm(!) cut off the piston crown with that dreaded offset. incidentally, i need nothing cut off the cylinder.

when i saw you were foolin with that dolmar cylinder it got me thinking that you might be the guy to turn the piston for my low-budget-probably-gonna-fly-apart poulan.

LOL. fly-apart-pullon!! Well, I know I could do it, its just a matter of screwing around until I get it right. Do I have the time? Hardly. I wouldn't want to mess around with your saw trying to get it right though. Maybe PM Nik, I know he can do it, weather or not he will or not I don't know.

Yep, second the modeling clay, I find I am using it more and more to measure things in hard to reach spots.

Cool, ya, that's a good idea. Not likely I'll do it though with this saw. Too many other saws to do.

 

[AUSSIE1]

We have/had fir plantations behind home and it's used in construction, but it is softer compared to our local timbers. Growing climates, soil conditions etc play a big part in density.

I received the Makita BB kit from Matt yesterday and wow, those transfers are small when you see them in front of you especially. The 372BB's don't suffer from the extra cc's robbing the trans of area.

Good stuff Will.

As you say, 175psi with the possibility to rise is plenty for a work saw.

 

[parrisw]

We have/had fir plantations behind home and it's used in construction, but it is softer compared to our local timbers. Growing climates, soil conditions etc play a big part in density.

I received the Makita BB kit from Matt yesterday and wow, those transfers are small when you see them in front of you especially. The 372BB's don't suffer from the extra cc's robbing the trans of area.

Good stuff Will.

As you say, 175psi with the possibility to rise is plenty for a work saw.

Thanks AL. Yep them transfers are dang small. I think that's where I spent most of my time, is on the transfers. 175psi, I'm very happy with that.

Yes the growing conditions have a big effect on the trees. We get hit with allot of wind storms here on the cost, they get stronger because of that as well. Keep in mind, your Firs there will be much different. Doug Fir isn't actually a Fir at all, allot different then your usual Fir species.

 

[parrisw]

Here are a few pics of your average piece of Doug Fir Bark, makes great firewood, burns really hot!!

 

[AUSSIE1]

Thanks AL. Yep them transfers are dang small. I think that's where I spent most of my time, is on the transfers. 175psi, I'm very happy with that.

Yes the growing conditions have a big effect on the trees. We get hit with allot of wind storms here on the cost, they get stronger because of that as well. Keep in mind, your Firs there will be much different. Doug Fir isn't actually a Fir at all, allot different then your usual Fir species.

Yep, Douglas fir, or as some here call it, Oregon, is what we have here.

The different weights in the pine out of the plantations is amazing. We get payed by weight and you don't want light wood sitting road side for too long.

Well I'm heading into the bush camping for two weeks in a couple of days, so I may take a barrel and tools in and do a little grinding. I'll have to get some grinding pics in the sticks!

 

[parrisw]

Yep, Douglas fir, or as some here call it, Oregon, is what we have here.

The different weights in the pine out of the plantations is amazing. We get payed by weight and you don't want light wood sitting road side for too long.

Well I'm heading into the bush camping for two weeks in a couple of days, so I may take a barrel and tools in and do a little grinding. I'll have to get some grinding pics in the sticks!

Really EH? Doug fir in AUS?

porting saws in the bush EH!! Just bring a Rat Tail file and do it like Gypo.

 

[AUSSIE1]

Really EH? Doug fir in AUS?

porting saws in the bush EH!! Just bring a Rat Tail file and do it like Gypo.

Yeah introduced as a plantation timber. Pine and mountain/alpine ash mostly these days.

I'll take the grinders in. I take a little 2 stroke genny in and I have a couple of inverters.

If I get real keen I could do a number on the genny!

 

[parrisw]

Yeah introduced as a plantation timber. Pine and mountain/alpine ash mostly these days.

I'll take the grinders in. I take a little 2 stroke genny in and I have a couple of inverters.

If I get real keen I could do a number on the genny!

LOL. I got one of those small 2 stroke genny's too. 1000watts I think.

 

[AUSSIE1]

LOL. I got one of those small 2 stroke genny's too. 1000watts I think.

That's them.........4 stroke at 1200rpm!

 

[parrisw]

That's them.........4 stroke at 1200rpm!

LOL, yup that's it. They work well. Don't use it much.