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Thread: Put the $24 Tach through its paces today

  1. 12-12-2006, 07:55 PM #31
    Lakeside53
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    Hey Cut

    This is what your 066 will look like if you keep it up there!



    Genuine red-light 066 cylinder - cheap...

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    Any sufficiently advanced technology is indistinguishable from magic."
    --Arthur C. Clarke,
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  2. 12-12-2006, 08:41 PM #32
    04ultra
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    Quote Originally Posted by Lakeside53
    This is what your 066 will look like if you keep it up there!



    Genuine red-light 066 cylinder - cheap...


    Nice picture...................



    .
    .





    I suffer from CAD...........







    BAD GAS IS A KILLER OF ANY 2-STROKE!!!
    .Plenty of saws..............

    I'm trying to add valuable content to this forum, and this is the kind of crap it turns into. Can't blame this one on me!
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  3. 12-12-2006, 08:57 PM #33
    Turner
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    Quote Originally Posted by outdoortype
    Do you guys tach your saw in winter and summer? I put the Pocket Tach on my MS310 when it was like 55 degrees and it varied close to 2800 RPM-factory spec. I put the tach on it Sat when it was like 30-35 degrees and ranged from 3100-3300. I didn't think the cooler, more dense air would raise the rpms that much. Is my tach screwed up or is this really possible?

    Cut, I didn't mean to hijack your thread.
    It is absolutely possible, cold dense air leans it out without a doubt.

    You may already know this, but I'll mention it anyway.
    Take a modern vehicle for instance, and track your gas mileage year round. You will see a small but definitely noticeable gas mileage decrease if you live where it gets cold. The reason is, modern computerized vehicles control/maintain the air/fuel ratio at a constant level. In the winter, the on board computer compensates for the dense air by injecting more fuel to keep the ratio constant. And Lake is right, pressure also makes a difference as well, which is why modern vehicles also have barometric pressure sensors. Matter of fact, I was just reading the OBDII codes in my truck tonight and was looking at the barometric pressure. BTW - misfire on cyl 7, $63 for a new COP and it's back on the road

    So, a saw has no means of auto compensating, so it has no choice but to run lean and wait on you to do the manual adjustment
    Shindaiwa 377,MS361, woods ported MS660M, FS76, FS80
    others not worth mentioning...
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  4. 12-13-2006, 11:36 AM #34
    Cut4fun
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    Havent compared to the friends stihl tach yet. But came up with a idea on how to test and see how accurate it was. My 7900 has a rev limiter in it at 13,500k. I put the tach on it hit the rev limiter and it would back off to 12,600k real quick. Then i set it to run at 13,330k out of the wood. So it must be pretty darn close for a $24 tach.
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  5. 12-13-2006, 11:44 AM #35
    B_Turner
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    Quote Originally Posted by Cut4fun
    Havent compared to the friends stihl tach yet. But came up with a idea on how to test and see how accurate it was. My 7900 has a rev limiter in it at 13,500k. I put the tach on it hit the rev limiter and it would back off to 12,600k real quick. Then i set it to run at 13,330k out of the wood. So it must be pretty darn close for a $24 tach.
    I am not sure how close the cutoff range is on rev limiters. I have seen numbers on my tach on saws lightly above what the rev limiter was supposedly set for. I've compared my tach with a couple of other dealer tachs and they read exactly the same, so I have no reason to so far suspect my tach. So if the rev limiter is speced to 13500, what is the margin on the limiter?

    In other words, how far might a coil be off in where it actually cuts off rpm?
    Last edited by B_Turner; 12-13-2006 at 04:17 PM.
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  6. 12-13-2006, 02:15 PM #36
    Cut4fun
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    Lakeside? WTH happened

    Man it looks like somebody took a sledge hammer and knocked the cylinder off the base on that RL 066. What happened?
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  7. 12-13-2006, 03:09 PM #37
    Lakeside53
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    The early 066 cylinder were not a world different from the 064 - just bigger bore with 6mm bolts instead of 5mm. They used a similar base gasket - 0.5mm paper...

    Lot's of stress on that cylinder - 6mm bolts weren't enough

    The paper gaskets packs down, the cylinder screws get loose, and the cylinder starts to flex... and breaks just like shown.

    They updated the cylinder early in 1994 with MUCH thicker mount bosses, and longer bolts.

    Later in 1994 they went to a steel gasket (it actually has a 2 thou rubber coating on both sides, but you wouldn't know by looking). The steel gasket doesn't pack. The upgrade to the gasket also applied to the 064.

    If the big bore kits don't have steel gaskets, they are taking a step backwards..
    Any sufficiently advanced technology is indistinguishable from magic."
    --Arthur C. Clarke,
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  8. 12-14-2006, 11:54 AM #38
    Elmore
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    American Made...Yes

    Quote Originally Posted by Cut4fun
    If you buy 3 or more you get 40% off and shipping is free. But i would guess you will have to pay for shipping.
    I am going to test it against a friends stihl tach soon to see how accurate it is. Seems ok. Suppose to go to 24K too. Will post a link to the company for you. I mounted mine in a 4"x6" piece of wood panel for easy handling.
    http://enmco.thomasnet.com/item/enm-...=prod&filter=0
    Free shipping regardless of how many units purchased, provided you use a credit card over the internet on their site. $14.40 each, if you order 3 or more. What a great stocking stuffer. Only about 30 left...make that 27.
    I wonder if my wife would like one?
    "Imagination without education is like a bird without feet"
    "Feet entangle birds, words...men"
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  9. 12-14-2006, 12:17 PM #39
    ShoerFast
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    Quote Originally Posted by Elmore
    Free shipping regardless of how many units purchased, provided you use a credit card over the internet on their site. $14.40 each, if you order 3 or more. What a great stocking stuffer. Only about 30 left...make that 27.
    I wonder if my wife would like one?
    I would buy one.

    If anyone wanted to score the buy 3 price, but didn't need 3 , I would buy one from them.

    Make mine Stihl, running:
    MS-361 5/8" muff-mod
    MS-660 3/4" muff-mod

    ΜΟΛΩΝ ΛΑΒΕ
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  10. 12-14-2006, 12:26 PM #40
    kyle1!
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    Me too

    I would be interested in one also. Shoerfast now we just need one more person.

    Brian
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  11. 12-14-2006, 12:32 PM #41
    kyle1!
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    Just went ahead and ordered 3

    If you would like one Shoerfast just PM me. I have another one available PM me if interested.

    Thanks

    Brian
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  12. 12-14-2006, 12:39 PM #42
    ShoerFast
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    On the phone as I type, with Ultra,he is getting 4, should he get 5?

    Make mine Stihl, running:
    MS-361 5/8" muff-mod
    MS-660 3/4" muff-mod

    ΜΟΛΩΝ ΛΑΒΕ
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  13. 12-14-2006, 01:10 PM #43
    Elmore
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    Quote Originally Posted by ShoerFast
    On the phone as I type, with Ultra,he is getting 4, should he get 5?
    Tell him it doesn't work on his battery operated tools.

    "Imagination without education is like a bird without feet"
    "Feet entangle birds, words...men"
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  14. 12-14-2006, 01:11 PM #44
    ShoerFast
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    Quote Originally Posted by Elmore
    Tell him it doesn't work on his battery operated tools.

    Funny you had that picture!

    Make mine Stihl, running:
    MS-361 5/8" muff-mod
    MS-660 3/4" muff-mod

    ΜΟΛΩΝ ΛΑΒΕ
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  15. 12-14-2006, 01:13 PM #45
    04ultra
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    Quote Originally Posted by Elmore
    Tell him it doesn't work on his battery operated tools.


    Picture from your private collection .... Now thats funny..........






    .
    .





    I suffer from CAD...........







    BAD GAS IS A KILLER OF ANY 2-STROKE!!!
    .Plenty of saws..............

    I'm trying to add valuable content to this forum, and this is the kind of crap it turns into. Can't blame this one on me!
    Reply With Quote Reply With Quote
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