Track propelled drive wheel cracked - Snowblower Forum : Snow Blower Forums
Reply
 
LinkBack Thread Tools
post #1 of 20 Old 09-12-2017, 05:05 AM Thread Starter
MLM
Junior Member
 
MLM's Avatar
 
Join Date: Sep 2017
Posts: 10
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
Track propelled drive wheel cracked

I obtained this two stage blower minus the engine from a "metal scrapping" friend for free. Having no prior experience with snow blowers but tired of pushing snow, I decided it worth investing a couple hundred $.
After surveying a couple forums I decided the 212cc, 6.5hp Predator engine would power this unit. At $99.00 off the shelf, I figured i could overcome the fact it's 3/4" x 2.43" shaft was too short for the job. ( I had successfully adapted the shaft on a 5 hp Electric motor to drive my home made cyclone dust collector )
I used a 3/4" black pipe for the extension by placing it in my circa 1944 Pipe Master threader, and filed the OD down to 1 inch.
The drive pulley for propulsion is 3", 3/4" bore with the duo 3" auger pullies being 1 inch bore.
I cut a slot in pipe to accommodate the keyway and also drilled and tapped three holes 4 set screws to help secure to the original motor shaft.

The ID of the pipe was slightly over sized. To compensate for this I took a 3/8 inch black pipe nipple and also filed it down to snugly fit inside a half inch black pipe, which I filed down to snugly fit inside the three quarter inch pipe I was using for the extension. The engine shaft was pre-drilled & tapped 5/16" FT24 so with a grade 8 bolt inserted through the 3/8 and half inch pipe, and using three-quarter inch 5/16 washers to align the bolt to center, I filled the void with J-B Weld... allowing an inch and a quarter threads protruding from one end.
This helped to keep the three quarter inch pipe shaft extension inline and secure . . .
True to my being known for over- engineering everything, I added a pillow block bearing, 1/2" bore, to support the far end of the shaft extension.

Two questions...

Any thoughts on pulley size as I assumed the three inch to be close to original ( which didn't come with the blower )

And at wasn't till after having gotten the motor and shaft extension engineered and assembled on the blower that I noticed cracks and the drive wheels for the track propulsion system.

If not having taking the track off that seems like it's still fairly structurally sound.
I thought as a preventative measure I would reinforce the drive Wheels with fiberglass or appropriate epoxy plastic glue with a fiberglass mesh tape for reinforcement.

Any ideas thoughts comments criticisms?
I'm a big boy I can take it... thanks
Attached Thumbnails
Click image for larger version

Name:	1505203646995-476984825_1505203736615.jpg
Views:	86
Size:	133.0 KB
ID:	107834   Click image for larger version

Name:	IMG_20170904_144511733_1505206739403.jpg
Views:	31
Size:	40.1 KB
ID:	107842   Click image for larger version

Name:	IMG_20170912_034840994_1505206843274.jpg
Views:	30
Size:	35.7 KB
ID:	107850   Click image for larger version

Name:	IMG_20170912_034940418_HDR_1505206925503.jpg
Views:	26
Size:	107.8 KB
ID:	107858   Click image for larger version

Name:	IMG_20170912_035018027_1505206981172.jpg
Views:	39
Size:	170.5 KB
ID:	107866  

MLM is offline  
Sponsored Links
Advertisement
 
post #2 of 20 Old 09-12-2017, 09:29 AM
Banned
 
Join Date: Sep 2010
Location: Michigan
Posts: 1,585
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 158
Likes (Given): 95
Likes (Received): 302
Don

Last edited by jtclays; 03-13-2018 at 03:03 PM.
jtclays is offline  
Post Thanks / Like - 0 Thanks, 1 Likes, 0 Dislikes
Likes Grunt liked this post
post #3 of 20 Old 09-13-2017, 03:15 AM Thread Starter
MLM
Junior Member
 
MLM's Avatar
 
Join Date: Sep 2017
Posts: 10
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
I can't believe this ... Most all small gas horizontal engines run clockwise when viewed from the flywheel side... ccw from shaft or PTO side ... is this not correct?

So why in the Sam Hill is this MTD set up for opposite rotation?

I never thought it would take a [email protected]$?¥RD engine ...

What a waste of time...

I feel like the joke about the "Polak" who built a tank ....one forward and four reverse...
MLM is offline  
post #4 of 20 Old 09-13-2017, 03:19 AM Thread Starter
MLM
Junior Member
 
MLM's Avatar
 
Join Date: Sep 2017
Posts: 10
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
Thanks for your input jtclays... It's just not my day...
MLM is offline  
post #5 of 20 Old 09-13-2017, 05:50 AM
Senior Member
 
Join Date: Jun 2014
Location: Shoreline, CT
Posts: 3,446
Post Thanks / Like
Thanks (Given): 103
Thanks (Received): 374
Likes (Given): 466
Likes (Received): 477
MLM, your snowblower most likely had a cam PTO engine (an engine with two PTO shafts). The crank PTO runs the impeller and augers (turns counter clockwise) and the cam PTO runs the drive unit (turns clock wise and at 1/2 the speed of the crank PTO). Search through the forum there are various threads about installing a single shaft engine onto a snowblower that originally had a 2 shafts engine. It can get complex but can be done.
YSHSfan is offline  
post #6 of 20 Old 09-13-2017, 07:09 AM
Guest
 
Join Date: Sep 2017
Posts: 842
Post Thanks / Like
Thanks (Given): 20
Thanks (Received): 53
Likes (Given): 40
Likes (Received): 94
Quote:
Originally Posted by MLM View Post
I can't believe this ... Most all small gas horizontal engines run clockwise when viewed from the flywheel side... ccw from shaft or PTO side ... is this not correct?

So why in the Sam Hill is this MTD set up for opposite rotation?

I never thought it would take a [email protected]$?¥RD engine ...

What a waste of time...

I feel like the joke about the "Polak" who built a tank ....one forward and four reverse...
that was really a drunk german VW bettle tech,

before 1968 if we did a rebuild of the trans and installed the ring gear on the wrong side as if it was being used in a type 2 bus, the end result was 4 rev 1 forward gear, car. left clutch cable side . bus right side
the old t 2 bus had a reduction gear setup on the axle ends. that reversed the rotation, so we had to install the ring gear on the opposite side of a bettle or a karmon ghia
10953 is offline  
post #7 of 20 Old 09-13-2017, 07:09 AM
Senior Member
 
Join Date: Jun 2014
Location: Shoreline, CT
Posts: 3,446
Post Thanks / Like
Thanks (Given): 103
Thanks (Received): 374
Likes (Given): 466
Likes (Received): 477
Check this threads

https://www.snowblowerforum.com/forum...5hp-clone.html

https://www.snowblowerforum.com/forum...td-5-22-a.html

You can also browse through the MTD forum section for other possible threads on this subject.

Check this video and browse through youtube for more of them

YSHSfan is offline  
post #8 of 20 Old 09-13-2017, 07:19 AM
Guest
 
Join Date: Sep 2017
Posts: 842
Post Thanks / Like
Thanks (Given): 20
Thanks (Received): 53
Likes (Given): 40
Likes (Received): 94
please don't let it bother you, as a former tech, the best of us have all learned by the school of hard knocks .
lesson you learned is do a full research first, brand, model, engine used , the engine used ,the codes at the end tell what it was beyond the hp spec, say a hmsk80-?????? those last numbers tell what it is beyond it being a tech. horizontal shaft, medium frame, snow king of 8 hp 'it tells how long the shaft is, dia of shaft,key way size, if it has a second pto ,rotation of the shaft or shafts
as to the cracked pulley,it is a mtd new are easy to find and purchase, better then trying to do a jury rig on plastic junk
10953 is offline  
post #9 of 20 Old 09-13-2017, 12:46 PM
Banned
 
Join Date: Dec 2015
Posts: 944
Post Thanks / Like
Thanks (Given): 99
Thanks (Received): 50
Likes (Given): 48
Likes (Received): 77
I've hit the twin-shaft versus single shaft issue. (forward gears versus reverse are switched)
This video shows a way to "flip" the transmission to get back to "normal"
If you are lucky it might work for you.
https://www.youtube.com/watch?time_c...&v=3hAwFdPZlzo
unknown1 is offline  
post #10 of 20 Old 09-14-2017, 01:36 AM Thread Starter
MLM
Junior Member
 
MLM's Avatar
 
Join Date: Sep 2017
Posts: 10
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 0
Likes (Given): 0
Likes (Received): 0
First, sorry about the "polak" joke... It was inappropriate... Guess I was just venting.

Yes , I see now that it is only the propulsion that is reversed...

I was at a disadvantage not having the original engine but it's true, I certainly failed in my due diligence to sufficiently research this ahead if time. No one to blame but myself.

At least it seems there is light at the end of the tunnel...

Many thanks to all for your input... It seems I have a couple of videos to watch and some threads to study!

What a great forum !
MLM is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Snowblower Forum : Snow Blower Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome