.404 chain swap

[Evansaw]

Hi all

I m swapping the nose from 3/8 to .404 at a Stihl 3003 bar

Bar is 30 inch and while 3/8 is 98dls

Anyone know how many DL would love the .404 so i can cut the chain?

 

[John Beiswenger]

98dl of 3/8 = 6.005ft. 90dl of .404 = 6.048. 89dl of .404 = 5.981. Check your remaining chain adjustment capacity with 3/8 and determine whether 89 or 90 is the better fit.

 

[hacskaroly]

Anyone know how many DL would love the .404 so i can cut the chain?

When I was making chain for bars that did not match the saw and the drive count was off (usually one longer or one shorter than what it should have been), I would go one or two links longer, mock it up on the bar and see where it ended up and knocked off how ever many links it (usually only one) to get the length it needed. I tended to use junk chain that way I could butterfly in a few lengths if the chain was not long enough and then knock out what I needed to get the correct count and then make up the good chain with the number I figured out.

 

[Squareground3691]

Stihl offers a 30” bar with .404 , it has 91 DL count , if that helps?

 

[Evansaw]

Stihl offers a 30” bar with .404 , it has 91 DL count , if that helps?

3003 mount? Can you please check?

 

[Squareground3691]

3003 mount? Can you please check?

3002 mount

 

[hacskaroly]

3003 mount? Can you please check?

Here is a link to Stihl's site with info:
STIHL Rollomatic ES guide bar, .404", 1.6 mm

Part Number: 30020009741

 

[Evansaw]

Here is a link to Stihl's site with info:
STIHL Rollomatic ES guide bar, .404", 1.6 mm

Part Number: 30020009741

Yep but 3002 is bigger bar for the 120cc saws, so for sure the dl are not correct for the smaller 3003

So if 91dl at 3002 then should be 5-6dl less out in 3003
Logic comes to 85or87links max total for 3003

I ll inform when i cut the chain

 

[Evansaw]

Here is a link to Stihl's site with info:
STIHL Rollomatic ES guide bar, .404", 1.6 mm

Part Number: 30020009741

Actually i own also this bar LOL
Thanks though

 

[Squareground3691]

Yep but 3002 is bigger bar for the 120cc saws, so for sure the dl are not correct for the smaller 3003

So if 91dl at 3002 then should be 5-6dl less out in 3003
Logic comes to 85or87links max total for 3003

I ll inform when i cut the chain

https://www.stihlusa.com/WebContent/CMSFileLibrary/SawChainSelection-6.pdf

 

[Squareground3691]

Actually i own also this bar LOL
Thanks though

Stihl oem 30” duromatic bar and bar .063 .404 3002 000 8041, 46 RM 91 chain | eBay

Stihl oem 30” duromatic bar and bar .063 .404 3002 000 8041, 46 RM 91 chain.

www.ebay.com

 

[Dennisthemenace]

3003 mount 30 inch 46RS/RM 88DL
3002.......30 inch ES Bar 90 DL
Duromatic bar (hard nose) 91DL

 

[ferris]

Hi all

I m swapping the nose from 3/8 to .404 at a Stihl 3003 bar

Bar is 30 inch and while 3/8 is 98dls

Anyone know how many DL would love the .404 so i can cut the chain?

That’s at least the second bar u convert to 404.
What’s ur reason for that?

 

[Eduardo K]

Sitting in traffic, my wife is driving so I did some math.

There are two links for each driver, so we double the pitch and multiply it by the driver count.
3/8 pitch doubled - 3/4” or 0.75” per driver, .404 is 0.808”.
The 3/8 chain for you bar has 98 drivers.
98x0.75”=73.5”
Then divide the length by .808.
73.5”/.808=90.965 or 91dls


My wife tailgates in traffic so I have to look down when I’m in the passenger seat.

Good luck.

 

[Evansaw]

That’s at least the second bar u convert to 404.
What’s ur reason for that?

Cause there is no .505

Well actually i got variety of trees and some are just killing the 3/8, wood being dirty or not. And of course for those f***** palm trees every know and then the .404 is the best solution

 

[Stihl036]

It's really not that hard to mount the bar on the saw with the chain adjustment almost all the way in and do a dry fitting of the chain right off of the spool. A second person might be handy though. Have the correct sprocket on before hand.

 

[Wilhelm]

Cause there is no .505

Actually ....

I believe it is called 1/2" , even 3/4" if I am not mistaken.
@Philbert might confirm my assumption.

 

[Squareground3691]

Actually ....

I believe it is called 1/2" , even 3/4" if I am not mistaken.
@Philbert might confirm my assumption.

There’s 1/2 pitch chain Wilhelm, but it’s old school stuff , and very pricey.

 

[Wilhelm]

There’s 1/2 pitch chain Wilhelm, but it’s old school stuff , and very pricey.

I am messing with him!

Money is no obstacle when it comes to chainsaws and associated items.

 

[Philbert]

3/8 pitch doubled - 3/4” or 0.75” per driver, .404 is 0.808”.
The 3/8 chain for you bar has 98 drivers.
98x0.75”=73.5”
Then divide the length by .808.
73.5”/.808=90.965 or 91dls

‘3/8’ pitch is a nominal measurement; like 2X4’s, or ‘foot long’ hotdogs.



100’ x 12” / foot =1,200 inches

1,200 inches / 1,640 Drive Links = 0.73 inches per link. Divide by 2 to get actual pitch of 0.365” (not 0.375”).

(*** Don’t share this with folks who are easily triggered! Next you will have to tell them where the REAL ‘rakers’ are on the cutters, and that the gullet doesn’t cut!).

Philbert