Muttster: A long, slow '74 resto-mod

grandpaul

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I have the luxury of using "other people's money", and a light work load...
 

freefly103

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Fan of Italian twins? Is that a Ducati 1000ss in the background? How do you like that bike?
 

gortnipper

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I am. It's a ST4S I am using as my commuter bike. 996 with more power and less wrist pain. 1" more height in the rear to add some rake.

There is a guy selling a ton of very collectible Ducs and Bimotas here at the moment. If only I had a Lotto win...
 

gortnipper

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Goods came in today from Mr. Comstock via the slow boat.

inlet.jpg
exhaust.jpg
vv.jpg
 
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gortnipper

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FYI - this is the result of Jim's work on my head vs. the stock FA.

comnoz said:
So now that I identified a problem with my prior velocity readings and corrected them -here is the flow tests with the 1.5mm oversize intake and a little work in the valve guide and bowl area.

Nice improvement for a steetbike running a .400 lift cam.

Flow
P1020151_zpslfiwnfqj.jpg


Velocity
P1020153_zpscu242mvo.jpg
 

gortnipper

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My family has been sick pretty much of December. Kids gave their conjunctivitis to my wife who got hit extra hard, with some bad effects on her liver. She is still out of action. So, things are slow.

Got the rear fender and tail light assembly on, with much fettling.

Got the front wheel on and the caliper shimmed correctly.

IMG_20161219_001614.jpg


But, the fender stay was rubbing on the tire on the primary side. 8mm clearance on the other side at the bead. My first thought was maybe the fender stay was flopped and needed tweaking.

But it looks like the wheel is laced 2.5mm dished too far to the primary side.

IMG_20161219_002201.jpg


IMG_20161219_002305.jpg


I suppose it will need to be retrued to center it properly.
 
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grandpaul

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gortnipper said:
...it looks like the wheel is laced 2.5mm dished too far to the primary side.



I suppose it will need to be retrued to center it properly.
Who laced it? I hope they left enough meat on the spokes to allow it to be corrected without replacing spokes.

Also hope your family, and especially your wife, are all completely better before Christmas eve. Have a happy one.
 

gortnipper

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Me too.

The guy here in Auckland who laces pretty much all the classic bike wheels did them. When I took the hubs to him I asked.him if he wanted.to know how much offset they had before I broke them down: no.

The rear is supposed to have no offset, correct?
 

gortnipper

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IMG_20161221_080846.jpg
In addition to the FA head work from Jim:

Maney forged 9.5:1 pistons
Webcam 312a
4" radius lifters
Dynamically balanced to 63%
IWIS cam chain
Camshaft dialled in at 104.5 L/C inlet, 12 pins between idler and cam sprockets, Idler gear now 5 teeth counter clockwise from original marks.
HPC coated barrels
ARP bolt kits
Maney oil junction block
Comstock sump breather
 
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gortnipper

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Spurred on by GP getting Rick's rolling, and since it is Boxing Day I made a shim from brass stock and put the problematic brake hub back together no problem. The frozen bearing dropped right in with a bit of red to keep it in place.

But, when I went to put it on the wheel, I noticed the tire was flat. A bit of air and then the tube cut loose. The guy who mounted it gave it a nice pinch flat.

Two steps forward and one back. And two for two on these wheels.

Merry f@cking Christmas.
 

Fast Eddie

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gortnipper said:
FYI - this is the result of Jim's work on my head vs. the stock FA.

comnoz said:
So now that I identified a problem with my prior velocity readings and corrected them -here is the flow tests with the 1.5mm oversize intake and a little work in the valve guide and bowl area.

Nice improvement for a steetbike running a .400 lift cam.

Flow
P1020151_zpslfiwnfqj.jpg


Velocity
P1020153_zpscu242mvo.jpg


That velocity graph is SERIOUSLY impressive ...
 

gortnipper

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Things haven't changed much around here recently and I haven't had much bike time.

I bought a new AN chain guard 06.1865 and there were two problems with it when I went to install it.

First, there was not enough of a gap to fit the thin head SS lower shock bolt and the washer I got from Rockey Point so I had to pull the speedo drive to get the bolt out to remove the washer


Grrr...

As I was installing it, I didn't see the guard push out the plug as I was on the other side of the bike. I saw it on the ground after. So, had to pull the speedo again and shave the dome off the plug so it was flat and would fit under the guard.

Double Grrr...


I didn't notice it does not have the cutout for the upper inspection hole blanking plug. The plugs appear on the AN 74 page for the rear wheel, but the guard on the 74 page is the older one not the 2a one to go with the brake plate.

Triple Grrr...

IMG_20170115_212126.jpg


And I misplaced the front spindle clamping bolt.

Quad grrr...
 
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gortnipper

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I have a three phase Trispark alternator I bought a while back. I am thinking of mounting it here at the back of the battery box, since the Shorai I have is fairly small. Will it get enough air to keep cool?

IMG_20170115_221029.jpg
 
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