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Offline DWS

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Re: New guy, first build
« Reply #325 on: August 20, 2015, 06:06:04 PM »
Don't forget to calibrate each of the vacuum gauges before syncing the carbs or you might not get a true sync job.
it starts at 4:00 min mark.


Notice the white dials right below the gauges, they need to be turn down a bit so they don't jump so much

check everything like timing, valve adj, points.
good luck
« Last Edit: August 20, 2015, 06:53:54 PM by DWS »
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78CB750F3
PD 42A with original breadbox
4 into 1
valves adjusted to .003 (intake and exhaust) ( as was suggested for cooling )
slow jets#35 Main #110
 turned out to 1.5 some paper work says 1.75
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Offline P.abrera

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New guy, first build
« Reply #326 on: August 20, 2015, 07:41:13 PM »
Thanks for the tips so far guys. Waiting on some OE style boot clamps and searching for sliiightly fatter manifold o-rings. Knocking off all possible culprits one by one. Will report what i find when its back together.


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Offline DWS

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Re: New guy, first build
« Reply #327 on: August 21, 2015, 08:11:47 AM »
This is what i used, works great.
It is the prefect width also.
Also make sure you use a fan to keep the engine cooler when not moving.
« Last Edit: August 21, 2015, 09:22:28 AM by DWS »
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Always looking for friends.

78CB750F3
PD 42A with original breadbox
4 into 1
valves adjusted to .003 (intake and exhaust) ( as was suggested for cooling )
slow jets#35 Main #110
 turned out to 1.5 some paper work says 1.75
4800 feet altitude

78 Honda CB 750 F3 Restoring now(Almost done)
BSA MX 50 Next
BSA b50T Parts

Offline P.abrera

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Re: New guy, first build
« Reply #328 on: August 21, 2015, 06:16:42 PM »

Quote from: DWS on August 21, 2015, 08:11:47 AM
This is what i used, works great.
It is the prefect width also.
Also make sure you use a fan to keep the engine cooler when not moving.

Good option. Those look good and sturdy. The worm gear clamps i was originally using would eventually slip when you really crank down on them.


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Offline Cabilao

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Re: New guy, first build
« Reply #329 on: August 22, 2015, 07:05:44 PM »
Hey Paolo. Caloocan Sales have the carb Synch tool in stock,analog for 4200,liquid for 7k+. Im with you with the clamps here,still looking for some good ones.If you try to tighten the local ones they slip. Hope you get it sorted out with your carbs.
have a nice sunday

Uwe
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before:
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CB400N(first bike)
RD350LC(more than one)
XS850(great bike)
CB900F(wish i still have it)
FZR1000(too fast)
Rickman CR900(sold for a good price)
now:
Rusi 125
CB 125 CL(just for fun)
Yamaha XTZ 125
CB750P7(mystery bike)
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Offline P.abrera

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Re: New guy, first build
« Reply #330 on: August 22, 2015, 11:59:58 PM »
Uwe,  yes i managed to get a hold of a carb synch too. Emgo brand, mid-quality but gets the job done.  If youre not in manila soon, Im planning a trip down to caloocan for some banjo bolts. Let me know if i can help pick up anything there you need and LBC to you in bohol.


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Offline Cabilao

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Re: New guy, first build
« Reply #331 on: August 23, 2015, 08:00:05 PM »
I just order a new batterie from them but they will sent it, thanks anyway for the offer. Guess i will buy the synch tool later,have other things to sort out first. Bike was standing long time so i guess i have to clean the carbs again.
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before:
Kreidler RMC(50cc)
CB400N(first bike)
RD350LC(more than one)
XS850(great bike)
CB900F(wish i still have it)
FZR1000(too fast)
Rickman CR900(sold for a good price)
now:
Rusi 125
CB 125 CL(just for fun)
Yamaha XTZ 125
CB750P7(mystery bike)
77/78 cool 2 member

Offline P.abrera

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New guy, first build
« Reply #332 on: August 30, 2015, 01:07:29 AM »
Re-imagining a 550 with a fairing, offset headlight, USD's and spokes...idle hands are the devil's playground.


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« Last Edit: August 30, 2015, 04:40:35 AM by P.abrera »
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Offline P.abrera

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New guy, first build
« Reply #333 on: August 30, 2015, 05:07:42 AM »
Quote from: calj737 on August 30, 2015, 04:19:16 AM
Sounds like the start of a beautiful new project, Paolo!


Getting ahead of myself again. Have yet to get my first project running 100% and im already collecting parts for a new build. Learned a lot on the first one, thanks to you guys. Planning something more refined with a bit more budget to it. Bit more "go" along with the "show"


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« Last Edit: August 30, 2015, 05:33:21 AM by P.abrera »
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Offline MessnerMoto

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Re: New guy, first build
« Reply #334 on: August 30, 2015, 05:21:31 AM »
I like the drawings :)
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Offline Stev-o

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Re: New guy, first build
« Reply #335 on: August 30, 2015, 05:22:56 AM »
Quote from: P.abrera on August 30, 2015, 05:07:42 AM

Quote from: calj737 on August 30, 2015, 04:19:16 AM
Sounds like the start of a beautiful new project, Paolo!


Getting ahead of myself again. Have yet to get my first project running 100% and im already collecting parts for a new build. Learned a lot on the first one, thanks to you guys. Planning something more refined with a bit more budget to it


Impressive drawing skills!   And I like the design, have you seen the Air Tech website?
(Or would you fab the fairing?!)

http://www.airtech-streamlining.com/hondaz/CR7501969-77SINCAM.htm


And that's how it is for most of us, we think about our next project before our current one is done!
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Offline P.abrera

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Re: New guy, first build
« Reply #336 on: August 30, 2015, 05:31:37 AM »

Quote from: MessnerMoto on August 30, 2015, 05:21:31 AM
I like the drawings :)

Thanks mirko


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Offline P.abrera

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Re: New guy, first build
« Reply #337 on: August 30, 2015, 05:46:28 AM »

Quote from: Stev-o on August 30, 2015, 05:22:56 AM
Quote from: P.abrera on August 30, 2015, 05:07:42 AM

Quote from: calj737 on August 30, 2015, 04:19:16 AM
Sounds like the start of a beautiful new project, Paolo!


Getting ahead of myself again. Have yet to get my first project running 100% and im already collecting parts for a new build. Learned a lot on the first one, thanks to you guys. Planning something more refined with a bit more budget to it


Impressive drawing skills!   And I like the design, have you seen the Air Tech website?
(Or would you fab the fairing?!)

http://www.airtech-streamlining.com/hondaz/CR7501969-77SINCAM.htm


And that's how it is for most of us, we think about our next project before our current one is done!

Haha, i guess im in the right place my buddy just got set up for aluminum. Thinking of trying my hand at aluminum bodywork. ...well this is a good year or so away. Just collecting parts, little by little. Back to the current project for now.


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Offline P.abrera

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Re: New guy, first build
« Reply #338 on: August 30, 2015, 06:27:14 AM »

Quote from: calj737 on August 30, 2015, 06:19:14 AM
You can do what my son is planning for his tank and seat; making a core from foam, then section inc it into a wooden "fish bone" model. He will use that as the final core for heating a sheet of aluminum to fold/wrap over his wooden frame to help form the alloy. Heated enough, aluminum bends quite easily. Then when it cools, it's very strong and holds it shape very well.

It's an age old technique and then your buddy can planishing hammer it smooth and stretch the rolls and crinkles out. A little coarse sanding, and you're in like Flynn!

Sounds interesring. Lotta time to think about fabrication techniques. Ill have the benefit of watching how your son's build unfolds Like i said, this ones a looong term project


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Offline SOHC4 Cafe Racer Fan

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Re: New guy, first build
« Reply #339 on: August 30, 2015, 06:42:54 AM »
Paolo,

I, too, like the renderings.  As you start gathering parts and ideas, go ahead and start a new thread.  Things do change, obviously, but it's cool to see how projects evolve over time.
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Offline mystic_1

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Re: New guy, first build
« Reply #340 on: August 30, 2015, 07:07:03 AM »
Paolo,

It's been clear to me for a while now that you are an artist in steel but you've shown from these drawings that your artistic talent extends to other mediums as well :)

Looking forward to seeing how your project progresses.

mystic_1
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Offline P.abrera

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Re: New guy, first build
« Reply #341 on: August 30, 2015, 03:27:12 PM »

Quote from: mystic_1 on August 30, 2015, 07:07:03 AM
Paolo,

It's been clear to me for a while now that you are an artist in steel but you've shown from these drawings that your artistic talent extends to other mediums as well :)

Looking forward to seeing how your project progresses.

mystic_1

Hey, thanks man I guess im not as rusty with a pencil as i thought. Must be all the drawing of unicorns and fairies for my kids


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Offline Cabilao

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Re: New guy, first build
« Reply #342 on: August 30, 2015, 06:31:03 PM »
awesome drawings,my skills end with a smily  :-[
 :-[
 ;)
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before:
Kreidler RMC(50cc)
CB400N(first bike)
RD350LC(more than one)
XS850(great bike)
CB900F(wish i still have it)
FZR1000(too fast)
Rickman CR900(sold for a good price)
now:
Rusi 125
CB 125 CL(just for fun)
Yamaha XTZ 125
CB750P7(mystery bike)
77/78 cool 2 member

Offline P.abrera

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Re: New guy, first build
« Reply #343 on: August 30, 2015, 08:07:34 PM »
Easy to imagine on paper, uwe. Hard to make in reality back to my current project for now.


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Offline Bootsey

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Re: New guy, first build
« Reply #344 on: August 30, 2015, 09:32:57 PM »
Your drawings remind me of this Triumph a little, which certainly isn't be a bad thing.
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Offline P.abrera

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New guy, first build
« Reply #345 on: August 30, 2015, 09:46:37 PM »
Quote from: Bootsey on August 30, 2015, 09:32:57 PM
Your drawings remind me of this Triumph a little, which certainly isn't be a bad thing.

Definite compliment, ive been looking at that one for inspiration, though im imagining a fuller half-fairing. I love the all metal look of that one though

The Flying J 550 is also a great source of inspiration. But the lines are a bit leaner than the slightly more muscled flavor im looking for.
« Last Edit: August 31, 2015, 02:59:22 AM by P.abrera »
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Offline P.abrera

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Re: New guy, first build
« Reply #346 on: September 06, 2015, 05:34:27 AM »
Got around to converting to double disc up front. Didnt seem to need to file down the lower mount as others have had to but i did need to shim about 3 mm on the top mounts. Ran outa daylight before i got some fluid running through but fit up seems ok.


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Offline edbikerii

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Re: New guy, first build
« Reply #347 on: October 16, 2015, 08:08:13 AM »
Holy Cow, man!  I cannot believe you took that horrible pile of crap and turned it into such a beautiful machine!  I honestly would not have touched that bike based on the before picture.

I'm not on here that frequently any more, but I'm very sorry I missed this build until now, Paolo.

Did you ever sort out your tuning issues?  I see that you are working with a 76 and you have a whole different set of parameters (reverse cone exhaust, single pod intake, 3mm bored cylinders, etc.), but the basic steps to jetting are always the same.  I did a bunch of work tuning my old 77 (with different, lean-burn carbs than yours) for the coolest running cylinder head temps with an infra-red thermometer.  Do you have access to one?  They are pretty cheap lately.  Have a look at the link in my signature for more tuning info.  Mind you, "The Right Way" is to do it on a dyno with an exhaust gas analyzer, but I didn't want to lay out the coin for that.

Great Job!!!!
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Jetting: http://forums.sohc4.net/index.php?topic=20869.msg258435#msg258435
Needles:  http://forums.sohc4.net/index.php?topic=20869.msg253711#msg253711

Offline knowsnothing

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Re: New guy, first build
« Reply #348 on: October 16, 2015, 12:41:43 PM »
Quote from: P.abrera on September 06, 2015, 05:34:27 AM
Got around to converting to double disc up front. Didnt seem to need to file down the lower mount as others have had to but i did need to shim about 3 mm on the top mounts. Ran outa daylight before i got some fluid running through but fit up seems ok.


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Looks so good i am doing a 550 front end swap on my cb350f with the KZ wheel.  ;D  I have a couple of questions if you don't mind.  Are you using the 550 front axle? Did you have to make or use any spacers?  Also, i am guessing you are using the KZ speedo drive?
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Offline P.abrera

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New guy, first build
« Reply #349 on: October 18, 2015, 05:36:55 AM »
Quote from: edbikerii on October 16, 2015, 08:08:13 AM
Holy Cow, man!  I cannot believe you took that horrible pile of crap and turned it into such a beautiful machine!  I honestly would not have touched that bike based on the before picture.

I'm not on here that frequently any more, but I'm very sorry I missed this build until now, Paolo.

Did you ever sort out your tuning issues?  I see that you are working with a 76 and you have a whole different set of parameters (reverse cone exhaust, single pod intake, 3mm bored cylinders, etc.), but the basic steps to jetting are always the same.  I did a bunch of work tuning my old 77 (with different, lean-burn carbs than yours) for the coolest running cylinder head temps with an infra-red thermometer.  Do you have access to one?  They are pretty cheap lately.  Have a look at the link in my signature for more tuning info.  Mind you, "The Right Way" is to do it on a dyno with an exhaust gas analyzer, but I didn't want to lay out the coin for that.

Great Job!!!!

Thanks man, i appreciate the positive comments. Further tuning on the bike is on the back-burner and its been moth-balled for a few weeks, some changes at work are taking priority at the moment but ill be back to it once the smoke clears IR thermometer tip is solid, will look into it
« Last Edit: October 18, 2015, 06:21:19 AM by P.abrera »
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