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Saturday Update 10/17/09[/SIZE]
When we last left Project Frankenbike, Wednesday night 10/14, I nearly killed myself putting that 300 pound 10 gallon motor inside a 9 gallon frame. This was the result of that night's work:
One tiny problem. If you look REAL close at the output shaft at the bottom rear of the motor, you see I left something out:
It's the smegma-shield to protect the U-joint from mud, rain and varmint guts. The one on the motor was accidentally damaged during the install. Not only was it bent to hellandgone due to an unplanned gravity event, it kept getting hung up on the sidestand mount, thereby doubling the difficulty level of the install. So I pulled it off with all intentions of putting it back on after the motor was installed.
One problem....you can't install it with the motor in-frame! The bolts holding the dust shield in place are about 1 1/2 inches long. Unfortunately, the clearance between the engine case and the sidestand mount, part of the frame, is only 1/2 inch: You can't finagle that bolt in no matter how you try:
Now at this point, I'm faced with two choices...leave the dust shield off and have my U-joint grind itself into oatmeal in a few thousand miles.....or pull that effin' motor and bolt it on.
It took me about 1 ciggy and a cup of coffee to decide to pull the motor back out. I am NOT going to compromise a single step of bringing Frankenbike back to life, so out it comes. I tried removing the rear motor mounts, hoping there would be enough "give" to pivot the back end of the motor down far enough to put the dustshield on, but no-go.
All the motor mounts had to be removed to lower the motor far enough to re-install the dustshield. Unnecessary extra work? I dunno, but like I said...no compromise!
So now I'm back where I was Wednesday night. Damn. Time to put the motor BACK in the frame. Still no hoist, Eric....but I did figure out an install method that was simple and fast.
With the motor sitting flat on the floor, you can't simply lower the frame over the motor, since the centerstand, exhaust mounts and bottom of the shock will hit the floor long before the frame is low enough for the motor mount holes to match up.
BUT, if you tilt the motor forward about 30 degrees, using a block of wood to keep it from tipping completely over, the rear motor mounts are raised more than enough that two people can pick up the frame, and slide it forward and down over the motor and the rear motor mounts line up perfectly. Install the long bolt through the frame and the upper rear motor mount...
Put the nut on the other end.....
Now the other long bolt through the lower rear motor mount and screw it into the frame.....
Now install the two top-rear motor mounts.....
And snug everything up. Just past finger tight. No more, because you still have the four motor mount bolts to insert through the frame spars -- 2 on the left, two on the right.....
The clearances to insert the frame spar bolts are VERY close...that's why you don't want to tighten down the rear and top mounts too tight at first. You may need to wiggle the frame some to get the holes in the frame to line up perfectly with the threaded lugs on the motor. The clearances are THAT tight.
Now it's important to torque all the motor mounts in a particular order. As those of you who have installed sliders on Gen I bikes know, you torque down the left side spar bolts first, THEN the right side. There's a good reason.....the left side bolts pull the frame tight against the left side of the motor. The two right side spar bolts tighten down on a bushing that pulls flush up tight against the motor, THEN the pinch bolts on the frame are tightened to lock the right side frame spar to the motor. You can clearly see the bushings underneath the bolt heads and the pinch bolts for the final tightening.
The same bushing/pinch bolt arrangement is used on the bottom-rear through bolt mount.....
Now go check the torque specs on the upper-rear bolt/nut, and the two top/rear mounts.
You're done rehanging the motor.
(again)
Bolt the clutch slave back on.....
.....stick the forks back on.....
.....put the front wheel back on.....
.....and I'll be damned if it ain't startin' to look like a motorcycle again!
Tomorrow, exhaust system and cooling system.
'Howie