The World Famous Bull Sessions

Vintage Sleds, Vintage snowmobiles => Vintage Tech Help => Topic started by: sport6 on July 10, 2021, 03:41:44 am

Title: comet 108 exp
Post by: sport6 on July 10, 2021, 03:41:44 am
Do Polaris p-85 primary springs and weights work in a comet 108 exp?

Title: Re: comet 108 exp
Post by: skeg777 on July 10, 2021, 04:20:29 am
That is all I use in mine I HAVE 2 DEEP BORES
Title: Re: comet 108 exp
Post by: Dick from Wellston on July 11, 2021, 12:54:55 pm
When we used a 108 clutch. I would knock the pin off that was under the heal of the weight, then where the tip of the weight meets the clutch, machine that spot so the weight will move , the spot you machine needs to be close to 3/8 in, then re-shim the belt clearance . Make sure there is at lease .005 clearance between the weight and the roller. Once this is done you have a 108 clutch the will match a P-85. Some of the newer 4pro clutch's are done this way.
Title: Re: comet 108 exp
Post by: opsled on July 11, 2021, 08:04:41 pm
I sometime wonder if Comet just copied a ton of the design from the P85. The interchangeability with tuning parts is amazing.

 I'm no Polie guy by any stretch but they have always build a good sled and their clutches were so good that almost everyone used them at the race track no matter what breed you liked.

opsled
Title: Re: comet 108 exp
Post by: chuck4199 on July 25, 2021, 07:16:01 pm
I sometime wonder if Comet just copied a ton of the design from the P85. The interchangeability with tuning parts is amazing.

 I'm no Polie guy by any stretch but they have always build a good sled and their clutches were so good that almost everyone used them at the race track no matter what breed you liked.

opsled

 Not Quite,
 
 The Polaris Clutch is a knock off of the Comet Patent from Hoffco Comet Industries owned by John Hoffman out of Indiana.

 Mr. Hoffman scoured the country side hawking his clutch design and Polaris bought into it and developed it further.

  So ,, no ,, Comet did not copy Polaris. It was the other way around.

   On  Patent Search for the Polaris clutch you will see it was signed off on by Hoffman.
Title: Re: comet 108 exp
Post by: opsled on July 26, 2021, 12:36:25 am
I sometime wonder if Comet just copied a ton of the design from the P85. The interchangeability with tuning parts is amazing.

 I'm no Polie guy by any stretch but they have always build a good sled and their clutches were so good that almost everyone used them at the race track no matter what breed you liked.

opsled

 Not Quite,
 
 The Polaris Clutch is a knock off of the Comet Patent from Hoffco Comet Industries owned by John Hoffman out of Indiana.

 Mr. Hoffman scoured the country side hawking his clutch design and Polaris bought into it and developed it further.

  So ,, no ,, Comet did not copy Polaris. It was the other way around.

   On  Patent Search for the Polaris clutch you will see it was signed off on by Hoffman.

 OK, You are probably right. I don't know. What I do know is that the Polaris clutch is waaaaaaaaaaaaaay better than the Comet.

opsled