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Author Topic: 87-89 gusset welding pics  (Read 4731 times)

Offline Pumashine

87-89 gusset welding pics
« on: October 11, 2014, 12:45:48 PM »
The 1986 front motor motor mount sub structure is a stout cast iron piece that may start fracturing from the frame. Fixing consists of just welding up the cracks. On the 87-89 sub structure the thin sheet metal design tends to start cracking at the inner corners just under the front motor mounts. This area is marked by a red line in the pic.


The thick small triangle shape pieces supplied in the 87-89 gusset kit are tacked in place just inside the frame up against the sub structure. This will leave room to leave a nice weld. The sub engine mount gussets reinforce the sub mount to keep it in place as it is subject to twisting and vibration. The twisting of more power full motors easily starts a crack in the sub mount. Weld the crack up and reinforce the sub mount with these small gussets.

Puma 408, Puma 431,  Pilot 412, Puma 431, Mini-tooth 486 Trx450r
89mm  Mini tooth Shearer in frame pipe chromed! Mounted with Cascade QUIET[/

Offline Pumashine

87-89 gusset welding pics
« Reply #1 on: November 29, 2014, 11:43:02 AM »
Got the subframe gussets all welded in.


the 86 frame went to Josh in Hawaii. Got the swingarm gussets TIG welded in on this frame. Cosmetically it looks better and functionally it is stronger.

Puma 408, Puma 431,  Pilot 412, Puma 431, Mini-tooth 486 Trx450r
89mm  Mini tooth Shearer in frame pipe chromed! Mounted with Cascade QUIET[/