Huztl MS660

[Mattyo]

Yep....I used to keep my cranks in the freezer...no need anymore

 

[Mattyo]

part 3 is up!

 

[Johnnybar]

On my 039 I put the crank in the deep freeze for a while and parked the bearing near a light bulb. After a few minutes it slipped right on!

One of the premium bearing manufacturers recommends a 150F difference in parts to seat bearings. So a -10F frozen bearing and a 140F case is supposed to achieve the task if tolerances were machined properly.

 

[Mattyo]

So....does your freezer go to -10f? Pretty sure mine doesnt get THAT cold......Admittedly it would be nice to have some liquid nitrogen...but why? The 660 has bearings that are already seated. With a couple of the correct size taps (m10x1 anr m12x1 lh) and some threaded rod you don't need heat or cold....

 

[Mattyo]

Btw...I do keep my bearings in the freezer but my target temp is 250 f case temp for seating bearings. I can't imagine that this temp has any negative affect on the bearing. ..no worse than the 13k rpm explosions that happen 6" away hehe

 

[Johnnybar]

Btw...I do keep my bearings in the freezer but my target temp is 250 f case temp for seating bearings. I can't imagine that this temp has any negative affect on the bearing. ..no worse than the 13k rpm explosions that happen 6" away hehe

Nice to see you are having success. More than one way to skin a cat my friend. -10F/+140F is just an example ...tweek the numbers to fit your freezer. This is not a contest for best or quickest or....... We are all here just sharing information. If a methods fits your situation, run with it. If not, let it go. If you see impending doom or ruining parts, give a fair warning. Have fun in the shop and online.

 

[Mattyo]

YES!

I'd like to think we are always striving for better. At this point, if I need to seat bearings I'd probably still heat up the cases and chill the bearings. but this thread is about the 660 kit... and since they already come with bearings installed, i've found a better way to seat the crank....without heat, or cold, or lateral forces... or a hammer (bad around bearings). If you want to keep doing it with heat thats fine... and thats currently the most common method here on the board because specialty tools are just that...specialty. my contention is that specialty tools are not THAT specialty, and they are easy to make... and have zero risk of buggary ... AND i have a guide on youtube on how to do it.

I'm going to do a 372 hutzl as soon as it shows up at my door in a day or two. the crank install will be nearly identical to the 660 and I will use tools for both sides of the crank.

I'll extend this offer, if you want to build other saws, let me know and I'll ship you down a set of tools to try ... just ship them back when done, or ship them on to the next guy that's building a kit....

 

[a. palmer jr.]

I thought someone said that the bearings are already installed in the case halves, is that not correct?

 

[Mattyo]

"but this thread is about the 660 kit... and since they already come with bearings installed" just said it...yes

 

[Wood Chopper]

Yes they are. So are the seals which most are removing before installing crank then putting oem seals back in


Sent from my iPhone using Tapatalk

 

[Johnnybar]

YES!

I'd like to think we are always striving for better. At this point, if I need to seat bearings I'd probably still heat up the cases and chill the bearings. but this thread is about the 660 kit... and since they already come with bearings installed, i've found a better way to seat the crank....without heat, or cold, or lateral forces... or a hammer (bad around bearings). If you want to keep doing it with heat thats fine... and thats currently the most common method here on the board because specialty tools are just that...specialty. my contention is that specialty tools are not THAT specialty, and they are easy to make... and have zero risk of buggary ... AND i have a guide on youtube on how to do it.

I'm going to do a 372 hutzl as soon as it shows up at my door in a day or two. the crank install will be nearly identical to the 660 and I will use tools for both sides of the crank.

I'll extend this offer, if you want to build other saws, let me know and I'll ship you down a set of tools to try ... just ship them back when done, or ship them on to the next guy that's building a kit....

Thanks friend but I have a full machine shop, mill, lathe, etc... barely room to walk through the shop! I personally use a light porta power ram to do my pressing or pulling. On another note, any chance you ever get over near Pomfret or Putnam?

 

[davhul]

Here's a quick 660 vid

 

[Johnnybar]

Here's a quick 660 vid

LOL! That was quick! I've have a Benjamin to place on you next competition! LOL

 

[ckelp]

is it just me or is anyone else having an issue with the crankshaft? it's like they did not take enough off the counterweights and a nub by the rod bearing, first a nub on the flywheel side was hitting the case, i filed it down so i was good to go, now BDC i (i think) can her the skirt scraping the counterweights.
when i get home tonight i'm going to send huztl a message with some measurements to see if i can get a new one on the way.. i wish i had a lathe just to to cut a mm or two off it and be done with it.

 

[Johnnybar]

is it just me or is anyone else having an issue with the crankshaft? it's like they did not take enough off the counterweights and a nub by the rod bearing, first a nub on the flywheel side was hitting the case, i filed it down so i was good to go, now BDC i (i think) can her the skirt scraping the counterweights.
when i get home tonight i'm going to send huztl a message with some measurements to see if i can get a new one on the way.. i wish i had a lathe just to to cut a mm or two off it and be done with it.

Is the crank centered in the case?

 

[davhul]

On my #2 kit I had to take alittle off the piston skirt. It was slightly scraping the counter weights.

 

[Johnnybar]

You might also consider the possibility of the skirt kissing the gasket. Others have occasionally had to touch up parts that interfered and noted it on here or YT. Definitely a find and fix situation before test run.

 

[weimedog]

You might also consider the possibility of the skirt kissing the gasket. Others have occasionally had to touch up parts that interfered and noted it on here or YT. Definitely a find and fix situation before test run.

Always on the 56mm's...

 

[Mattyo]

Thanks friend but I have a full machine shop, mill, lathe, etc... barely room to walk through the shop! I personally use a light porta power ram to do my pressing or pulling. On another note, any chance you ever get over near Pomfret or Putnam?

I don't ever get over to those places... not that I can't though

I have inlaws in OK, south of Tulsa... Mounds I think

 

[grizz55chev]

Nice to see you are having success. More than one way to skin a cat my friend. -10F/+140F is just an example ...tweek the numbers to fit your freezer. This is not a contest for best or quickest or....... We are all here just sharing information. If a methods fits your situation, run with it. If not, let it go. If you see impending doom or ruining parts, give a fair warning. Have fun in the shop and online.

Wise words, the two things I see is sharing info and having fun. Well said my friend, well said!