Solo 665 vs Mastermind MS 362C-M

The use of the 881 C/O saw with oil injection would probably be problematic, but it could be done if you nixed the oil injection.

I would have done the Dolmar to 681 Solo conversion using a 6400/6401 but could not find a 'Dexter Clean' one to experiment on. AFAIK the three P/C kits ($300 ea + ship + import duty) left Germany sometime last week, but travel time and US Customs are usually time consuming so who knows when they will arrive. In the meantime if anyone has a 6400/6401 (Dexter Clean) running or not they want to part with let me know. I can get a new 6410 for around $500 but that would be stupid!

 

Just cant believe guys overlooked solo for so long with your goggles on. We tested them back in 08 stock etc and had 3 guys do a build off with them back in08 or 09 with 3 681.

They are a pig in the hands with weight for 65cc and to soft av but power wise top dawgs 65cc 75cc 81cc. But if you are running it as 81cc throw the weight out the door. Lighter then most in class.

08 stock 681

 

And IINM the stiff Dolmar AV parts will interchange with the Solo parts.

 

Look at the front of the muffler on that solo and you can tell not a typical work saw. Even though we used to call them work saws. Some guys started pulling the solo cranks and welding them up to stop them from failing.

 

Dexter, is the 6401 still giving you problems?

 

Lot of those hotter ported 7900 681 saws have a husky 272 piston in them with a shim under the cylinders. There is even a wide skirt wiseco piston going in them for the the saws that is being used for the gtg and racesaws.

 

piston on left stock, middle wiseco, right 272

http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=273.0;attach=1198;image

 

By the way all of this stuff is already posted on my site in threads if you are wanting to learn.

 

IIRC the Weisco pistons are custom castings made available to and available from EHP?

 

Yep Ed had them made up.

 

All the Solos (665, 675, 681) have the exact same crank, same part number even. They are a conventional 5 part setup, crank pin, 2 counter weights and 2 half shafts. I have a new OEM one here and will post a few pics later.

 

Zama carbs are very finicky. I wouldn't doubt the 665 comes close to the 441 in cutting cants. The 460 should beat it by a little more I would think.

 

Dang what a saw! Beats your ported $362 and at about half the all in cost of the Stihl!!! That thing was worth the price , had no idea it was that kind of saw when they were for sale!! Basically the factory made the saw run right from the get go. Cylinder from factory must look closer to what a ported saw looks after its been worked on!

 

There hand ground? I would assume there is a machine or robot to do that!!

 

Exactly. Those wheels have to be dressed and I've seen some stihl come with top beaks on the square that cut like semi chisel ripping chain.