vizette - What are the numbers on that bar? It certainly appears to be wide enough to look correct on that saw.
On another topic, I spoke with my Engineer last week and he basically started over on the 300 Series air box cover with the good example to work from. I am hoping to have the new drawing on hand next week.
Mark
Thanks for the update! I was wondering what happened with that cover situation. Oh that reminds me, I got a chip "screen" for that 250 from Bob not long ago - appears to be 3d printed, I was wondering if that was your handy work?
Please tell....what bar pattern is that Tsumura to fit large frame Mac?
OK so the Tsumura situation... These are D176 mounts, commonly I just see them listed as "fits Echo". I thought I remembered the mounts being similar, so I backtracked some of the Echo models via Oregon to confirm. If you want one for a small mount, you're good to go - pretty sure I'm going to get a 24" for my 7-10 at some point. Large mount requires filing the slot a bit.
The 24" ones I see on ebay all the time, among other places. This is a 28" though, and the only place I've found it is "sawagain" (
https://www.sawagain.com/) They seem to be scarce, so you have to use the "email me when these are back in stock" feature. I missed out the first time waiting too long. This time, I checked in as soon as I got the email, and there were only like two available. Not sure if that's just a supply issue or what. They're very responsive at sawagain though, I'll definitely try to do business with them again.
Anyway, back to the bar info:
The lightweight 28" p/n is 030FK4, that's 3/8 .050 with 96DL
I was specifically looking for a lightweight for this heavy ole saw, but if you want a solid there's also 030FV4 at 28" - seems that FK is light and FV is solid(?)
The lightweight 24" is 029FK4 @84DL
If you want beast mode, there's a 32" light with p/n 030FK4 (105DL), but that's a D009, so modification required.
Again, it took a few minutes with a good file to get this to fit the large frame. I just took my time, marked with a sharpie and a straight edge, and verified with calipers as I went. It was
very tight getting the tail to fit, but the slot was a bit squared off by the time I was done filing, so after rounding it out again with a chain file, it gave it enough room to clear the clutch drum. I guess you could also file/grind the tail a bit if you were so inclined. I was not...
I can definitely notice the weight difference. I also assume that squared off slot after filing is probably not good to leave there as it encourages stress fractures from the corners. Side note: got a lot of "nails on a chalkboard" screeching while trying to file it perpendicular - didn't bother me, but I'm sure the neighborhood animals were going out of their minds! Filing at a 45, sort of draw filing and cross filing at the same time got the job done without noise.
Regarding the width comment that Mark made: the bar is ~ 3" wide, which is about the same as the old Homelite bar I had on there. However, the TsuMura is more consistent in width down the length of bar. The Homelite bar was noticeably narrower at the nose, so I really like this more, especially the wider nose. The TsuMura narrows down a bit at the nose, but not as much. As stated previously, the loop that came with it is Archer (per an email convo with sawagain). The grind on it sucked, and wasn't even consistent side to side, but I got that sorted out tonight with a good file!
I may have peed a little when this bar showed up today. I had to file out the bar groove a hair (it's for 8mm studs), which honestly it took me a few minutes talk myself into taking a file to this new bar. I've got a new respect for my Simonds multi-kut though. Couldn't run this today though unfortunately - got a severe rope burn on my right hand this morning. Looks like I wrapped my fingers around a hot soldering iron.
