Did the finish blister?
Huztl MS660
- Thread starter Kyler Monares
- Start date
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Johnnybar
ArboristSite Guru
Here is some general info available from a premium bearing manufacturer:
"Normally a bearing temperature increase of 150° F above the shaft temperature provides sufficient expansion for mounting. As the bearing cools, it contracts and tightly grips the shaft. It’s important to heat the bearing uniformly and to regulate heat accurately. Bearings should not be heated above 250° F, as excess heat can destroy a bearing’s metallurgical properties, softening the bearing and potentially changing its dimensions permanently. Standard ball bearings fitted with shields or seals should not be heated above 210° F because of their grease fill or seal material. Never heat a bearing using an open flame such as a blowtorch."
"Normally a bearing temperature increase of 150° F above the shaft temperature provides sufficient expansion for mounting. As the bearing cools, it contracts and tightly grips the shaft. It’s important to heat the bearing uniformly and to regulate heat accurately. Bearings should not be heated above 250° F, as excess heat can destroy a bearing’s metallurgical properties, softening the bearing and potentially changing its dimensions permanently. Standard ball bearings fitted with shields or seals should not be heated above 210° F because of their grease fill or seal material. Never heat a bearing using an open flame such as a blowtorch."
finish is fine. the oven temp was 305 ... but I don't think the case itself got above 280 on my temp gun. the powdercoat was chipping a bit anyway when I got it, but its no worse now than before.
yes, I know a torch isn't ideal, and especially on these nylon cage bearings. ...hence my need/want/desire to make tools to do this stuff at room temp. i'm kinda upset that I got bad info to start, was hoping to order the tap I needed before the saw arrived. good news is that the taps did show up, but they weren't the correct size for 660. on the upside, yes I'm good to go for the husky stuff ... AND... the tools worked brilliantly for the flywheel side today.
yes, I know a torch isn't ideal, and especially on these nylon cage bearings. ...hence my need/want/desire to make tools to do this stuff at room temp. i'm kinda upset that I got bad info to start, was hoping to order the tap I needed before the saw arrived. good news is that the taps did show up, but they weren't the correct size for 660. on the upside, yes I'm good to go for the husky stuff ... AND... the tools worked brilliantly for the flywheel side today.
There's no need to heat a bearing, just the case.
the bearings are already installed in the case ... thats how the cases come. I need to heat the bearing to get the crank through it, unless you have the tool or a press
i thought I had the tool... but, I tapped for the wrong threads. you'll see in the vid
i thought I had the tool... but, I tapped for the wrong threads. you'll see in the vid
Johnnybar
ArboristSite Guru
Getting closer to it's new home!
2017-02-24 Friday
16:35:25 In transit
15:46:09 The customs clearance is completed.
14:09:45 Shipment arrive at 【America New York Gateway】
2017-02-24 Friday
16:35:25 In transit
15:46:09 The customs clearance is completed.
14:09:45 Shipment arrive at 【America New York Gateway】
ckelp
just being myself
mine is 50 miles from my house
schmauster
Secret ArboristSite Operative
Awesome video. Super helpful for the everyday bear like myself!
Welcome!
Ordered my engine off eBay from Huztl on the 14th and it arrived today the 25th. That's a pretty good turnaround from China with free shipping if you ask me.
i'm missing bolts and have extra stuff too lol
The ms170 came fully assembled! Made it easy for the most part.
schmauster
Secret ArboristSite Operative
How did the pre assembled saw run Jason? Many hours?
I'm still assembling it. I ran into a hiccup caused by myself. I have a thread about it on here right now.
Need help.lol
Need help.lol
Johnnybar
ArboristSite Guru
He must mean he had a short block as part of the kit.
Cylinder, piston, crank and pan already buttoned up.
One issue I did have that just crossed my mind. Normally when setting ignition module air gap I use a business card. I could not do that here. I had to lock it down while lightly prying it out with a screwdriver. Than turn the flywheel until the magnet's where under it. Normally at this point I put the business card in and release it. But it was just to tight. What I did is use a feeler gauge under the secondary part of the coil, or the arm that comes off of it. I had to set that at .012 and put the card under the coil itself. When I tried .010 the flywheel would hit. Doing it this way the flywheel turns without contact.
part 2 is up!
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!the bearings are already installed in the case ... thats how the cases come. I need to heat the bearing to get the crank through it, unless you have the tool or a press
i thought I had the tool... but, I tapped for the wrong threads. you'll see in the vid
