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Post by OBR on Feb 5, 2010 14:18:43 GMT -5
Well Dan, truth be told I haven't touched a saw in over a month. The 550 is still waiting to be re-sealed, and re-tested...I'm so sick of snow and cold. Snowing again today. Set a record I heard on the radio this morning, 62 straight days with 5 or more inches of snow on the ground...makes everything so much harder and more time consuming, not to mention it kind of puts cutting out of the question as snow and ice covered trees don't mix with chain... Hopefully it decides to warm up and have an early spring.
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Post by mikem on Feb 5, 2010 14:23:37 GMT -5
Well, dropped the rotating assembly off at the local saw shop, but due to the holiday it wont be till the weekend until they'll be able to do the vac and pressure test on the crankcase, so it looks like I'll be doing a little waiting again.... My local shop wanted $30 to do a vac/pressure test on a saw that already had the exhaust/intake ports sealed by me. I refused, put another $20 with the $30(I saved) and bought a MityVac Elite Vac/pressure tester. Nice tool... is almost paid for in savings.
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Post by lesorubcheek on Feb 5, 2010 14:47:14 GMT -5
Yes, this global warming is really causing a rough winter . Had the highest electric bill on record last month. That stupid groundhog thinks its gonna continue, even though there's an early Easter this year. Guess we'll see soon enough. Dan
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Post by MCS on Feb 5, 2010 19:19:23 GMT -5
Well, dropped the rotating assembly off at the local saw shop, but due to the holiday it wont be till the weekend until they'll be able to do the vac and pressure test on the crankcase, so it looks like I'll be doing a little waiting again.... My local shop wanted $30 to do a vac/pressure test on a saw that already had the exhaust/intake ports sealed by me. I refused, put another $20 with the $30(I saved) and bought a MityVac Elite Vac/pressure tester. Nice tool... is almost paid for in savings. Which model number did you get? I looked through their site and there is quite a variety! I'm looking at the MV8500 as it seems to have everything.
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Post by mikem on Feb 11, 2010 18:34:24 GMT -5
My local shop wanted $30 to do a vac/pressure test on a saw that already had the exhaust/intake ports sealed by me. I refused, put another $20 with the $30(I saved) and bought a MityVac Elite Vac/pressure tester. Nice tool... is almost paid for in savings. Which model number did you get? I looked through their site and there is quite a variety! I'm looking at the MV8500 as it seems to have everything. Yes...I got the MV8500. Nice metal(not plastic) vac tester that you can switch from vac to pressure with the flip of a lever. pretty handy. It also has a ton of fittings to adapt to different vac lines and such. I am pretty impressed with the tool.
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Post by OBR on Apr 27, 2010 21:30:14 GMT -5
Well, time to dig out this age-old thread as the collegiate year is quickly drawing to a close then there will be MUCH more time to finally (after a year) finish this big old boy. Anyways, question for you guys, on the lower crankcase half theres a small piece of "foil" covering the, oiler port I guess you'd call it. Anyways, my "foil" is damaged and needs to be replaced, anyone have any suggestions as far as what to use/where to get it? Like I said its a real thing foil material that was apparently applied via some kind of adhesive... Nice to be back on the forum
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Post by Urbanchainsawer on Apr 28, 2010 21:54:16 GMT -5
I'm not 100% sure as to what you are talking about, but the HVAC guys use a"foil" tape that has an adhesive back . If you cannot find it, I have a roll. I think the big box hardware stores may have it, but it may be the type that has a fabric fused into it.
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Post by MCS on Apr 29, 2010 8:15:20 GMT -5
Anyways, question for you guys, on the lower crankcase half theres a small piece of "foil" covering the, oiler port I guess you'd call it. Anyways, my "foil" is damaged and needs to be replaced, anyone have any suggestions as far as what to use/where to get it? Like I said its a real thing foil material that was apparently applied via some kind of adhesive... I was thinking of that foil too. HVAC guys use it to seal duct work. I can't find anything in the IPL other than a filter that covers the pump vent hole.
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Post by OBR on Apr 29, 2010 11:56:49 GMT -5
Only thing is how thin is that stuff? The stuff that come off is paper thin and then some...
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Post by Urbanchainsawer on Apr 29, 2010 18:10:05 GMT -5
C'mon, how critical is the thickness. We,re talking about foil. Is it mylar thickness?
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Post by lesorubcheek on Apr 29, 2010 20:10:26 GMT -5
Had to dig, but finally found a piece with the foil on it. Uploaded with ImageShack.usBest I could measure, it was about 2 thousandths of an inch. Tough to get exact because the exposed parts had adhesive on them and weren't clean. Only purpose of the foil is to keep sealant out of the oiler passages when you assemble the cylinder and crankcase. Measured some aluminum foil and it was less than 1 thousandth, so I think it should work fine with a light adhesive to hold it in place. Thinner the better since you'll have a better flush seal between the case and cylinder. If you're careful with the sealant, you won't need to bother with it anyway, but it won't hurt as long as its very thin material. Dan
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Post by MCS on Apr 30, 2010 8:09:01 GMT -5
Interesting... I can't find any reference in the service manuals to this foil nor is it listed in the parts catalog. I would expect to see it listed as a component under the crankcase and cylinder. It could be that this was released as a service tip and not part of new manufacture which would explain why there is no reference in the IPLs. I could see where proper application of sealant, a light film of the correct sealant, only on the crankcase surface would eliminate the need for this foil during manufacturing but in a service shop it would be different. In Dan's picture it looks like the foil hangs over the edge which wouldn't be very neat for a new saw.
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Post by lesorubcheek on Apr 30, 2010 9:31:03 GMT -5
Yep, some of the 450/550 saws I've played with had the foil, and some didn't. At least one didn't have foil and had plugged up oiler ports because of overly generous sealer. Can't pretend to know the real answer, but my hunch is it was a quality safeguard when the saws were mass assembled. One less thing to worry about when you're slapping a hundred or so together in a day. Again, just a theory.
Dan
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Post by OBR on Apr 30, 2010 10:31:01 GMT -5
So you guys think i could get away with just cutting plain old aluminum foil and using a light adhesive to hold it in place? I'd like to put something back, because just as you said Dan, it would eliminate having to worry about plugging the oiler port with sealant.
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Post by MCS on Apr 30, 2010 11:45:07 GMT -5
So you guys think i could get away with just cutting plain old aluminum foil and using a light adhesive to hold it in place? I'd like to put something back, because just as you said Dan, it would eliminate having to worry about plugging the oiler port with sealant. I vote Yes ;D
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Post by lesorubcheek on Apr 30, 2010 11:57:27 GMT -5
I'll second it. If you'd thought it best to just be careful with the sealant and ignore it, I'd agree with that one too. Many ways to skin a cat ;D.
Dan
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Post by OBR on Apr 30, 2010 22:02:50 GMT -5
I think we'll see what we can do with the regular old foil, do a dry fit to see how well it seals up. If nothing else I can always pull it off if I don't like the way it lays.
Only other thing worrying me about sealing this old guy back up is those darn transfers. The first time I tried I had air leakage. I used Yamabond 5, and it was just thin enough to be difficult to get enough in there to seal the "void" those caps have without having it leak down into the cylinder. So my thoughts are to maybe try a slightly thicker sealant, something like the red high-temp silicone rtv. Anyone have any opinions on the stuff?
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Post by OBR on Jul 11, 2010 12:07:19 GMT -5
It...LIVES (sorta) ;D
So, finally got the 550 sealed up put back together, tests fires beautifully. You don't half a$$ pull the cord on this fella, its got some comp. But alas, I opted to not rebuild the carb to see if I could get away with it and no dice...she's not pumping fuel. So I guess I gotta get a rebuild kit before I can really run it...bummer
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Post by lesorubcheek on Jul 11, 2010 13:08:09 GMT -5
Great news indeed! The SDC is cake to rebuild. Wouldn't be sweatin' it. Can't wait to see some pics or even better a video.
Dan
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Post by OBR on Jul 21, 2010 23:14:59 GMT -5
A quick picture. Got it running today, full carb kit, and I noticed my boot had a crack in it when i put it in last time...so I stuck in a new one. Seems to run good, need to tune it, pull out the 24 incher and see what it'll do. I'll try to take some vid of it cutting.
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