Forums Forums - Off Topic Forum FUN





Go Back   Forums Forums - Off Topic Forum FUN > Snow Trac ST4, Kristi, Thiokol/LMC, Tucker, Bombardier & Other Snowcat Discussions > Snowcat Repairs, Parts & Problems Forum

Snowcat Repairs, Parts & Problems Forum Snowcat Repairs, Parts Inquiries, Sources, Problems & Advice

Reply
 
Thread Tools Display Modes
  #1  
Old 03-08-2017, 02:50 PM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Snowtrac Drive Sprockets on CAD

As the title says, does anybody have a drawing of the drive sprockets on CAD?
I would like to cut some from UHMW plastic.
Reply With Quote
  #2  
Old 03-08-2017, 04:00 PM
nwerring nwerring is offline
Bronze Member
 
Join Date: Aug 2006
Location: Oslo, Norway
Posts: 181
Thanks: 26
Thanked 213 Times in 59 Posts
nwerring is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by oilline View Post
As the title says, does anybody have a drawing of the drive sprockets on CAD?
I would like to cut some from UHMW plastic.
I do, but only for the "new" big wheel Snow Trac. I'll try to find it tomorrow.
Reply With Quote
The Following User Says Thank You to nwerring For This Useful Post:
oilline (03-09-2017)
  #3  
Old 03-09-2017, 04:02 AM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

I presume mine is the new big wheel version ?
Reply With Quote
  #4  
Old 03-09-2017, 04:27 AM
nwerring nwerring is offline
Bronze Member
 
Join Date: Aug 2006
Location: Oslo, Norway
Posts: 181
Thanks: 26
Thanked 213 Times in 59 Posts
nwerring is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by oilline View Post
I presume mine is the new big wheel version ?
Ok. It does not really matter, because the teeth on the sprocket are the same - only the thickness of the sprocket and bolt pattern are different. I had the 3D scan people make a model for the thick version in a solid disc. Then one can cut it down to the version one want. They cut out a hole about 3" in the middle for the axle nut/shaft.
I'm picking up the first uhmw sprocket from the post office later today. Will be fun to see how they came out🙂 I'll post a photo later.
Reply With Quote
  #5  
Old 03-09-2017, 09:33 AM
nwerring nwerring is offline
Bronze Member
 
Join Date: Aug 2006
Location: Oslo, Norway
Posts: 181
Thanks: 26
Thanked 213 Times in 59 Posts
nwerring is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Here's the sprockets I had made. They look really nice. Have to adjust the mounting hole a little (in depth), but otherwise perfect. I was not able to attach the CAD file here, so send me a PM with your email and I will try to email it to you. This one is for the later model Snow Trac. If you have the earlier one, you have to drill new mounting holes and make the sprocket a little thinner.
Attached Images
  
Reply With Quote
The Following 3 Users Say Thank You to nwerring For This Useful Post:
jim slagle  (03-10-2017), Snowshadow (03-10-2017), SnowTrac Hunter (03-28-2017)
  #6  
Old 03-09-2017, 10:23 AM
JimVT's Avatar
JimVT JimVT is offline
Bronze Member
 
Join Date: Oct 2005
Location: Enumclaw WA.
Posts: 3,054
Thanks: 3
Thanked 723 Times in 396 Posts
JimVT is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

this is one stock and two thicker sprokets lyndon had made. the thick one worked fine and are still on a few machines.


__________________
Jim KF7RiN
#185 snow trac
2004 pistenbully canyon
Reply With Quote
The Following 3 Users Say Thank You to JimVT For This Useful Post:
NorCal (03-09-2017), nwerring (03-09-2017), Snowshadow (03-10-2017)
  #7  
Old 03-09-2017, 11:01 PM
schmidt schmidt is offline
Member
 
Join Date: Jan 2006
Posts: 41
Thanks: 0
Thanked 23 Times in 4 Posts
schmidt is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

I too am looking for the older style sprockets. The attached photo is from a few years back. I purchased these sprockets from Christer over in Sweden probably 10 years ago. I did try reaching out him, but no response. Appreciate any leads. Thanks, Brad
Attached Images
 
Reply With Quote
  #8  
Old 03-10-2017, 03:51 AM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

I have the old style sprockets looking at the picture above. Strange really as it is a very late machine , #2517.
When did the new type sprocket start in production ?
Reply With Quote
  #9  
Old 03-10-2017, 07:00 AM
300 H and H's Avatar
300 H and H 300 H and H is offline
Bronze Member
 
Join Date: Jan 2010
Location: Iowa
Posts: 5,744
Thanks: 1,696
Thanked 947 Times in 533 Posts
300 H and H will become famous soon enough
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by oilline View Post
I have the old style sprockets looking at the picture above. Strange really as it is a very late machine , #2517.
When did the new type sprocket start in production ?
Around 1970 or so, when Acktiv bought the rights to manufacture the Snow Trac from Westmaskerskinner. This is also when the front two boggies were replaced by a single big wheel.

Your machine my have been converted to the two band track, as parts are more available, and two band tracks are known to stay on better than the three band were.

Regards, Kirk
__________________
Snow trac ST4 #267
Reply With Quote
  #10  
Old 03-10-2017, 08:26 AM
JimVT's Avatar
JimVT JimVT is offline
Bronze Member
 
Join Date: Oct 2005
Location: Enumclaw WA.
Posts: 3,054
Thanks: 3
Thanked 723 Times in 396 Posts
JimVT is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

almost forgot about you. your snow trac is looking good. the new engine is doing ok?
__________________
Jim KF7RiN
#185 snow trac
2004 pistenbully canyon
Reply With Quote
  #11  
Old 03-10-2017, 08:32 AM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by JimVT View Post
almost forgot about you. your snow trac is looking good. the new engine is doing ok?
Do you mean me ? Or a previous owner ?
Reply With Quote
  #12  
Old 03-10-2017, 08:34 AM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Sorry my serial number is 2317
http://s481.photobucket.com/user/oil...wtrac.jpg.html
As you can see it is the big wheel , 2 bogies, but has the old type drive sprocket and 2 band tracks.
I wondered if this one was assembled by Bruce in Scotland using left over parts?
Reply With Quote
  #13  
Old 03-10-2017, 09:40 AM
JimVT's Avatar
JimVT JimVT is offline
Bronze Member
 
Join Date: Oct 2005
Location: Enumclaw WA.
Posts: 3,054
Thanks: 3
Thanked 723 Times in 396 Posts
JimVT is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by oilline View Post
Do you mean me ? Or a previous owner ?
woops,i was thinking mountain home lodge in Leavenworth
did you buy his?
__________________
Jim KF7RiN
#185 snow trac
2004 pistenbully canyon
Reply With Quote
  #14  
Old 03-10-2017, 11:05 AM
schmidt schmidt is offline
Member
 
Join Date: Jan 2006
Posts: 41
Thanks: 0
Thanked 23 Times in 4 Posts
schmidt is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Hi Jim, Yes the machine is doing well here at Mountain Home Lodge and Don's new 1600 engine is doing the same. Thanks too for the lead on the solid Continental Tires which got a good workout this winter. I plan to replace the remaining 6 tires with the solids next year. Any sources on the older style sprockets? Thanks, Brad
Reply With Quote
  #15  
Old 03-10-2017, 09:34 PM
teledawg's Avatar
teledawg teledawg is offline
Bronze Member
 
Join Date: Apr 2007
Location: Gold Cord Mine, Alaska
Posts: 341
Thanks: 1
Thanked 29 Times in 16 Posts
teledawg is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by schmidt View Post
Any sources on the older style sprockets? Thanks, Brad
CAC Plastics in Wasilla, Alaska has made some prototype UHMW plastic sprockets for the two band version of the Snow Trac. The part no is ST-30A. Call CAC and talk to Steve.

http://www.cacalaska.com
__________________
1968 Trac Master ST4B #0922
Reply With Quote
  #16  
Old 03-10-2017, 10:57 PM
vintagebike vintagebike is offline
Bronze Member
 
Join Date: Mar 2012
Posts: 270
Thanks: 15
Thanked 499 Times in 138 Posts
vintagebike is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Niels sprocket scan in STP using MRC app viewer.
Name:  IMG_9334.PNG
Views: 207
Size:  155.4 KB

Name:  IMG_9335.PNG
Views: 205
Size:  99.7 KB
Reply With Quote
  #17  
Old 03-13-2017, 01:29 PM
vintagebike vintagebike is offline
Bronze Member
 
Join Date: Mar 2012
Posts: 270
Thanks: 15
Thanked 499 Times in 138 Posts
vintagebike is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

I can get these made up in Boise using hp water jet cutting and IPX red super UHMW from Interstate Plastics in both new and old sprocket style. They say the price will be very reasonable. Anybody want to join in? 4-6 weeks out. Steve
Reply With Quote
The Following 2 Users Say Thank You to vintagebike For This Useful Post:
redsqwrl (03-13-2017), Snowshadow (03-15-2017)
  #18  
Old 03-13-2017, 03:59 PM
redsqwrl's Avatar
redsqwrl redsqwrl is offline
Bronze Member
 
Join Date: Feb 2011
Location: E central WI
Posts: 1,495
Thanks: 255
Thanked 495 Times in 257 Posts
redsqwrl is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Steve I would be interested in the .DWG files for the Older larger bolt circle sprockets.

Mike

I am struggling with niels drawing, I go them to open in solid works. and I am making strides in saving them but......
Reply With Quote
  #19  
Old 03-13-2017, 07:18 PM
300 H and H's Avatar
300 H and H 300 H and H is offline
Bronze Member
 
Join Date: Jan 2010
Location: Iowa
Posts: 5,744
Thanks: 1,696
Thanked 947 Times in 533 Posts
300 H and H will become famous soon enough
Default Re: Snowtrac Drive Sprockets on CAD

Quote:
Originally Posted by oilline View Post
Sorry my serial number is 2317
http://s481.photobucket.com/user/oil...wtrac.jpg.html
As you can see it is the big wheel , 2 bogies, but has the old type drive sprocket and 2 band tracks.
I wondered if this one was assembled by Bruce in Scotland using left over parts?

I believe your machine was sold by McCarthy machine while the Snow Trac was still in production. Those made after Aktiv stopped making them were a parts clean up run, and the engine hoods look nothing like the production units. Yours looks like a normal production high cab, with two band tracks on it. Maybe some one got tired of running out of the three band originals, I don't know... But I have heard several times the two band tracks stay on better..

Nice Snow Trac btw. I would love to own a high cab model.

I have to say, I am interested in some UHMD for the older two band set up, sprockets as well. They are quiet running for sure. The clickety clack goes away with them.

Regards, Kirk
__________________
Snow trac ST4 #267
Reply With Quote
  #20  
Old 03-14-2017, 02:20 PM
oilline oilline is offline
Junior Member
 
Join Date: Jan 2016
Location: Skipton, North Yorks, UK
Posts: 21
Thanks: 1
Thanked 10 Times in 5 Posts
oilline is on a distinguished road
Default Re: Snowtrac Drive Sprockets on CAD

Ive quickly drawn up a old type sprocket on CAD, file attached if anybody need it. Mounting hole PCD just guessed for now as couldnt be bothered going out to measure.

It may need some perfecting when i can compare it to a good condition sprocket.
Attached Images
File Type: pdf sprocket1.pdf (163.0 KB, 34 views)
Reply With Quote
The Following User Says Thank You to oilline For This Useful Post:
Snowshadow (03-14-2017)
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Snowtrac sprockets MNoutdoors ATA (Alaska Track Association) Forum 16 04-04-2017 07:33 PM
Bombardier Drive Sprockets DDR Snowcat Restoration & Modification Projects Forum 3 08-08-2016 10:23 PM
Tucker Drive Sprockets Track Addict Snowcat Classifieds (For Sale / Wanted) Forum 2 12-03-2012 01:38 PM
snowtrac sprockets brianf Snowcat Restoration & Modification Projects Forum 7 09-14-2012 12:03 PM
601 drive sprockets darryl Snowcat Restoration & Modification Projects Forum 3 10-17-2007 05:56 PM







All times are GMT -4. The time now is 04:44 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright 2002 - 2017 www.ForumsForums.com