SPS Worktruck Rebuild, Part 5
Trees, Tank bung/top motor mount and gas cap
By Protettore di Parola with photos by Scooter Grubb

Toptree inplace
A teaser shot of what's to come.

This project has been lots of educational fun and I am starting to see the light at the end of the tunnel. Ryan took a break from the triple trees and aimed his attention back at the tank. It still needed a petcock, so he machined a bung and welded that in. He also finished a motor mount and turned an excellent gas cap that we are using as an example of design for several other parts on the bike.

We altered out building course back to the front end, while knowing the level of work projects ahead were considerable. Sucker Punch Sally’s sent a pair of their billet spoked “Blokes” wheels and matching rotors for the front. I also talked to Kelly at Velocity and she is shipped out a pair of Metzeler tires.

Madscientist

Ryan had some serious figuring on how to cut the slits and drill the holes for the pincher bolts. Engineering decisions were made is smoke-filled design sessions. The top tree would contain one pincher bolt for each slit, and the bottom would have two. Ryan needed to make a fixture for the trees so that he could drill, tap, and slit the trees.

motormount

It was the moment of truth when he chocked the first tree to drill and cut. This could screw up the entire delicately machined masterpiece. We were proud as hell of the nearly finished product. I was sweating bullets, even though I had complete faith that Ryan knew what he was doing. Everyone screws up once in a while, and he hadn’t yet, so our odds were sinking. I called Bandit, at the Bikernet headquarters as asked him to roll the dice.

Ryan started by drilling the pincher boltholes and tapped them, then countersunk the bolts. That aspect slipped along like a shot of 12-year-old Irish whiskey. Then he hooked up the saw blade to his Bridgeport. It looked menacing, like it could cut through the hull of a battleship. He set the tree in place and slowly started to cut.

cuttrees

Billet aluminum fragments flew everywhere and when the dust settled it looked great. He took a simple angle file and finished the slit nicely. It took an entire night to carefully each gash. There's something nasty about that word. It was slippery process, but well worth it. They look like no others and are going to be the crown jewels of the bike.

Tattoo john
I don't believe it. The outlaw Tattoo John on a stock dresser.

As Ryan cautiously filed the edges, Tattoo John stopped by to change fluids in his Roadglide before his lower 48 tour (which he is still roaming through). He changed engine and trans oil, and realized he needed a rear tire. The wire carcass was showing. Just another great example of why you should go over your bike before a big trip.

legs
The famous precision hand honing system.

b&b fab from conte

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