Vics 1980 Bob Elsners #3 factory race sled

[Roseaufan]

The 78 Polaris factory sleds had the drilled and wax-filled hyfax as well, although Thorsen was running a lube tank at Eagle River. Not sure if he was the first to do that, but it's the first instance of it that I know of.

[Vintagesleds.com]

[emrickmn]

Vic,
Here is a shot from one of my RXLs.  The second is my attempt to duplicate the pattern.
I think it was rather common back then.

[Vics stuff]

 The ones on this sled were neatly done . Looks like they were maybe done on some type of mill. Not sure if I should leave the originals on the sled even though the right side is worn .
 Vic

[Vics stuff]

AJ   nice job on that skid. 

[jschaffer]

AJ, are those hyfax a light purple in color?  I have a few that came with a SSR and they are drilled like that.  They are the ugliest color I've ever seen.

[emrickmn]

AJ, are those hyfax a light purple in color?  I have a few that came with a SSR and they are drilled like that.  They are the ugliest color I've ever seen.

Lt blue.   OEM for Polaris

[SirSpamalot]

   Here are some cool pics of the engine cylinder and skid on some things that they did. The cylinder transfer ports were so enlarged that the engine builder ground through the outer casting and had to repair with marine tec epoxy. The slide rails hyfax was gun drilled to allow more lube on the track .
 Vic

Holy swiss cheese cylinder Batman!

Thanks for the pics. Wow.

[SRX SnoPro]

SirSpamalot, Crazily, There are actually not any additional ports involved here, just port work on existing.   

[Vics stuff]

 I herd that a well ported 7 port engine produced more horse power than a 9 port cylinder. I have 3ea Team Arctic 340 SM engines and all of them are 7 port  cylinders.  not sure the information given was correct but interesting to see 7 port cylinders used on Elsners and Dimmermans sleds .  The transfer ports are definitely larger than stock.
 Will post some crank pics of how they plugged the holes in the counter weights .
 Vic 

[chris r]

 Will post some crank pics of how they plugged the holes in the counter weights .
 Vic

Cool project Vic. Quick thought here would say that it is a problem to do that, but I'm not really alert or even awake yet.

[MELROSEMAFIA]

Is that the sled he was driving in the E.R. World Championship race with a 20+ sled lead, when he blew the belt coming out of turn 4 with less than 5 laps to go. Cant remember exactly which year it was 79-81...

[SRX SnoPro]

Hard to believe without triple exhaust ports.   "Stuffing" the crank dates back to early 70's for sure. 

[SRX SnoPro]

Is that the sled he was driving in the E.R. World Championship race with a 20+ sled lead, when he blew the belt coming out of turn 4 with less than 5 laps to go. Cant remember exactly which year it was 79-81...

In '79 he came up from about mid-pack and won.   In '80 Jocko pretty much owned it from the start.  In '81 Dave Wahl ran second for a lot of the race before being taken out by Jocko, and Hulings won.   In '78 Thorsen lead pretty much the whole race, and in '77 I don't think Bob made the final.   I think I remember that happening, but it may have been a different class. 

[Roseaufan]

Vic,
Here is a shot from one of my RXLs.  The second is my attempt to duplicate the pattern.
I think it was rather common back then.

That pattern was actually in the RXL manual.

[Vics stuff]

 Yes drilling the hyfax was a common practice. We did it to all of our race sleds even the XC ones back in the 70's .
 Vic