3/8 picco/lopro rim sprockets

[Mad Professor]

I've found someone who will manufacture 3/8 7-pin picco rim sprockets.

A quantity of 4-20 will run $28 each, which is not much of a savings over the spur.

Anybody else interested so I could order a larger run to get cost down?

If there is enough interest I'll see what a larger run of 50-100 might cost.

I'm not looking to make money, just cost + shipping.

P.S. these would be large spline to fit 066/660 type saws using a rim sprocket.

 

[BobL]

I've found someone who will manufacture 3/8 7-pin picco rim sprockets.

A quantity of 4-20 will run $28 each, which is not much of a savings over the spur.

Anybody else interested so I could order a larger run to get cost down?

If there is enough interest I'll see what a larger run of 50-100 might cost.

I'm not looking to make money, just cost + shipping.

P.S. these would be large spline to fit 066/660 type saws using a rim sprocket.

Well done MP - I would like 4!

 

[Mad Professor]

If we can get a larger run, cost will be ca. $19 each plus shipping.

 

[smokinj]

Is this only going to work on a 660/066?

 

[mtngun]

Is this only going to work on a 660/066?

I'm sure these will be rims that fit a standard spline -- in other words, they'll fit your 460 or 7900 or anything that has a standard spline.

Mad Professor, will these be pressed from sintered metal, similar to the Oregon rims, or will they be machined similar to danzco rims ?

 

[smokinj]

I'm sure these will be rims that fit a standard spline -- in other words, they'll fit your 460 or 7900 or anything that has a standard spline.

Mad Professor, will these be pressed from sintered metal, similar to the Oregon rims, or will they be machined similar to danzco rims ?

I am on a learning curve here so if you use this rim with a picco chain will the 3/8 bars still work?

 

[Mad Professor]

I'm sure these will be rims that fit a standard spline -- in other words, they'll fit your 460 or 7900 or anything that has a standard spline.

Mad Professor, will these be pressed from sintered metal, similar to the Oregon rims, or will they be machined similar to danzco rims ?

Danzco is the place I inquired about making the rims, so I assume machined.

They will be standard large spline so should fit most med-large saws.

The things Ed wanted was a length of chain to be sure to match fit and also the groove width of a small spline cast picco sprocket, to get proper groove width.

Anybody have a small spline picco sprocket that can provide measurements? Other wise I'll stop by the Stihl dealer this week with my calipers........

 

[mtngun]

I am on a learn curve here so if you use this rim with a picco chain will the 3/8 bars still work?

Depends on the brand. BobL has reported that his GB (?) 3/8" bars fit picco chain.

However,the 3/8" bars that I have tried -- Windsor, Stihl, and Carlton -- the nose sprocket teeth were too thick to fit inside the lo-pro links. I had to thin the teeth with a raker file, then it worked OK.

You can also buy a proper lo-pro/picco bar from Logosol.

Mad Professor, I don't have a store-bought picco rim to measure. I wasn't aware that the rim groove width was that critical. My modded 404 rims seem to work fine with low pro.

 

[BobL]

Depends on the brand. BobL has reported that his GB (?) 3/8" bars fit picco chain.

Yep was purchased as a SN25-50WR Bar - 25" Pro Top Stihl 310 - 660 3/8LP x 050 72DL

 

[Mad Professor]

Depends on the brand. BobL has reported that his GB (?) 3/8" bars fit picco chain.

However,the 3/8" bars that I have tried -- Windsor, Stihl, and Carlton -- the nose sprocket teeth were too thick to fit inside the lo-pro links. I had to thin the teeth with a raker file, then it worked OK.

You can also buy a proper lo-pro/picco bar from Logosol.

Mad Professor, I don't have a store-bought picco rim to measure. I wasn't aware that the rim groove width was that critical. My modded 404 rims seem to work fine with low pro.

I agree, regular 3/8" rims are the same for 0.050 and 0.063" chains so as long as the groove is big enough should work.

Sthil made picco bars (3003 prefix) for the larger saws, up to 25" I think. My 25" bar from logosol was oregon branded, purchased in 2000. I'll have to have a look at the PN to see if it is picco specific, I have assumed it is.

 

[Mad Professor]

I just talked to Ed. He is going to do a small run and I do not have to be the middle man.

I'm in for a few of the first run. If others have interest please contact Danzco.
I won't leave him hanging and will buy up ALL of the lot if there is not enough interest.

http://www.danzcoinc.com/

I hope there are enough millers out there to support this as a commodity for Danzco to provide as a regular item. It's up to you CS millers.

Best,

MP

P.S. Milled ,heat treated, solid steel stock used, not cheap cast/powder, should hold up real well

 

[BobL]

Thanks MP - that is a good job for good job setting this up.

 

[Mad Professor]

Hi Dan,

Thanks for the reply.

If you get a chance check this out, complete L + C archives, good reading and informative to your location.

http://www.pbs.org/lewisandclark/archive/idx_jou.html

Thanks,
Tony

 

[BIG JAKE]

I've been considering the lo-pro but stihl on the fence. I'm not convinced yet that the difference between the lo-pro and regular 3/8's is enough to walk from here to across the street over. May be I haven't followed some of the threads close enough, but still hung up over .375 vs .365... Bob and Mtngun like it-guess I'll need to look the data over

 

[Mad Professor]

I've been considering the lo-pro but stihl on the fence. I'm not convinced yet that the difference between the lo-pro and regular 3/8's is enough to walk from here to across the street over. May be I haven't followed some of the threads close enough, but still hung up over .375 vs .365... Bob and Mtngun like it-guess I'll need to look the data over

I get to mill a lot black cherry and I hate to make it into sawdust instead of boards (less kerf).

I've only run sthil picco PMX (0.050 3/8 picco 10 degree cutter) but would like to hear comparisons to others who have tried less $$$ chains ( WP 3/8 LP) and see how it compares to stihl chain.

For crosscut I run mostly Stihl RS or RSC that I find on ebay for $15 a loop.

Can't find stihl picco PMX in the USA, besides logo$ol ( $27/16" bar loop)

 

[smokinj]

Ok I like the thought of the less kerf Inighten me here: I am running a 063 3/8 set up on a 880 How will this help me? and what all do I have to do?

 

[Mad Professor]

Ok I like the thought of the less kerf Inighten me here: I am running a 063 3/8 set up on a 880 How will this help me? and what all do I have to do?

I don't think you want to run picco on an 880, to much HP.

On a smaller saw, say a 066, each cut is THINNER, so more WOOD less SAWDUST: more Boards from each log, less sawdust.

If you have correct spline clutch you need a : rim sprocket, with 0.050" picco tip bar, or 0.050 hardnose bar, picco chain.

 

[mtngun]

Ok I like the thought of the less kerf Inighten me here: I am running a 063 3/8 set up on a 880 How will this help me? and what all do I have to do?

I agree with Mad Professor, a 120cc saw is too much for lo-pro/picco.

But .....Aggiewoodbutcher runs 0.325" chain on his 120cc saws, for bars up to 42" if I remember correctly. On longer bars, he said the 0.325" stretched too much.

Easy enough to put a 0.325" nose on a bar, and 0.325" rims are readily available, but 0.325" ripping chain is tough to come by.

Aggie uses Carlton 0.325" semi-chisel, reground to 10 degrees. It's a little hard to find, since most of the 0.325" on the market is safety chain for homeowner saws. You pretty much have to buy a reel of 0.325", make your own loops, and regrind it.

 

[gemniii]

other thread on lo-pro
http://www.arboristsite.com/showthread.php?t=121746

 

[smokinj]

I agree with Mad Professor, a 120cc saw is too much for lo-pro/picco.

But .....Aggiewoodbutcher runs 0.325" chain on his 120cc saws, for bars up to 42" if I remember correctly. On longer bars, he said the 0.325" stretched too much.

Easy enough to put a 0.325" nose on a bar, and 0.325" rims are readily available, but 0.325" ripping chain is tough to come by.

Aggie uses Carlton 0.325" semi-chisel, reground to 10 degrees. It's a little hard to find, since most of the 0.325" on the market is safety chain for homeowner saws. You pretty much have to buy a reel of 0.325", make your own loops, and regrind it.

Thats where my head at.