Paugho 45 build

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nifty
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Re: Paugho 45 build

#76

Post by nifty »

Condolences, my wife and I cared for my mother and then her mother, Good that you have the 45 project at this time.

If rotor is eyeball central in caliper you're good
If there is no stress on installed caliper mount, you're good
If you have to remove caliper to bleed, so be it

Not applicable to your installation, but something to think about...
In cobbled up, mismatched caliper and rotor situations, if rotor thinner than intended for caliper, with some designs, when the pads wear down they can actually drop out of place, example I saw was a Norton Commando, OE caliper, with a thin "custom" rotor, made my blood run cold.

Nifty
olddaze
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Re: Paugho 45 build

#77

Post by olddaze »

I will be keeping an eye on this thread. I just picked up one of these frames & a stock length OE type springer. So far for me motor & transmission seem very straight forward. Primary & exhaust is going to require some head scratching. Paughco's answer to the belt primary is their 45BDL set-up. But, at $900 that is alittle pricey for me. It seems custom exhaust for the 45's is also far and few in between. Paughco's fishtails are nice but again at $700+ they are out of reach, I'll make something first.
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Re: Paugho 45 build

#78

Post by RooDog »

Remember that with a deal like this you are actually building a motorcycle, not just assembling a bunch of parts. Be prepared for a lot of custom, one off, parts. This is what makes building bikes so satisfying, is the challenge, and the reward when you can say you did it yourself, and they don't believe you.....
....RooDog...
nanonevol
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Re: Paugho 45 build

#79

Post by nanonevol »

Haven't got her started yet. Except for short 5 secs bursts. That's with starter spray.
Points .020, plugs .030. Timed to spark front cyl. on advance with flywheel line in center of view hole. Retard for starting.
This is my timer. The advance/retard is limited by the cutout you see in the bottom part. Is this original? Looks like handy work.
Image
Compression feels good. Carb is a Mikuni jetted for the motor. When I turned the air screw from 1 turn out to half a turn, it ran slightly longer.
Peek seals on the intake. Tested for leaks.
I checked the front intake tappet and it was fine at .006". Would have done them all but found it difficult to slide the lower valve spring
cover up (and back down) after unscrewing it. Watched a You Tube where a guy made a tool out of wood to push his and he kind of struggled
with his. Made the same tool. Is it usually this much work?
kitabel
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Re: Paugho 45 build

#80

Post by kitabel »

There's a factory hex wrench for the covers, now OBS and repro is $$$.

There is a factory cut-out, don't know if that one is also extended. The important setting is front cylinder line centered = 30 degrees and 5/16" BTDC at the extreme end of travel. It may retard too much (harmless), you'll find a happy place.

Very dangerous: some marking that tells you when you have full advance, but the slot allows you to get another 10 degrees; use this only with light throttle low speed cruising, lowers head temperature and increases mileage. MUST go back to FA position for any hills, acceleration, higher speeds. This is done automatically with engine vacuum with VOES, and I'm sure some clever fabricator can add an automotive vacuum can and link to the existing H-D.
RooDog
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Re: Paugho 45 build

#81

Post by RooDog »

If you are using starter spray to get the engine to light, then the iggy is working, but not the carburetor.
How do you know the Mikuni is tuned for that engine?
kitabel
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Re: Paugho 45 build

#82

Post by kitabel »

X2
Most common Mikuni VM error is either setting the idle speed screw too high, or rolling on the throttle while kicking. Both allow air to enter the engine while bypassing the choke enrichment.

Give us the current jetting, maybe something is odd.
pilot jet
slide cutaway
needle jet, type and size
needle
clip position
main jet
air jet
nanonevol
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Re: Paugho 45 build

#83

Post by nanonevol »

Happens all the time. I humble myself on forums asking for help, then the problem gets sorted right after! Well, somewhat.
Took the carb off to look at the pilot jet (again) and when I put it back together, I left the enricher on which I hadn't been using for some stupid reason.
Started up and ran, then noticed the enricher. Let it run awhile then turned off the enricher and it kept going.
Idle seemed kind of high so I dropped the slide - all the way - and it still seems high.
Was still on full retard ignition and advancing it only raised the rpm.
Played with the air screw a bit but then the garage smoke alarm went off and it seemed best to shut it down for now.
Maybe my throttle cable needs adjust come to think of it.

Here's the jetting as supplied by 45 Restoration:
Pilot 20
Slide 2.5
Needle jet 159 P6
Needle 6DH3
Middle clip
Main jet 280
Air jet 2.0

Thank you guys as always for your excellent and prompt feedback.
RooDog
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Re: Paugho 45 build

#84

Post by RooDog »

OK, sounds like you got a handle on it.
When I tried to start my Shovelhead for the first time last spring it would hit but not actually start, Come to find out that my throttle blade was complexly closed, $&$ Super G, from where I had replaced the speed screw and it was not even touching the linkage. Screwed it in 'til it touched + a little more, and bingo ! It started & ran.
....RooDog....
animal12
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Re: Paugho 45 build

#85

Post by animal12 »

Another deal with Quick Start ( we call it engine heroin ) make sure that if you use it make sure its the premium engine start . The premium flavor
has some lube in it for the top end .
animal
kitabel
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Re: Paugho 45 build

#86

Post by kitabel »

It might want a 25 pilot, the air jet is too large but not important now, everything else looks good or close.

Fast idle with the speed screw all the way out is an air leak.
nanonevol
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Re: Paugho 45 build

#87

Post by nanonevol »

Yeah turns out my throttle cable was too short causing the high idle, and as kitabel says, the enricher
Needs throttle off to work. Runs pretty sweet. I may have other pilot and air jets to try. The “air screw” I
Believe it’s called causes richer mix as you turn it in
RooDog
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Re: Paugho 45 build

#88

Post by RooDog »

Do you have this information?

https://www.mikuni.com/pdf/vmmanual.pdf
kitabel
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Re: Paugho 45 build

#89

Post by kitabel »

The Mikuni manual explains how the circuits operate, but nothing about any particular engine.
It was also written by someone for whom English is not their first language.
RooDog
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Re: Paugho 45 build

#90

Post by RooDog »

Being a Japanese carburetor may have some influence on that, no?
I haven't used a Mikuni carbby since the 1990s, and it as from Jerry Branch.
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