Author Topic: Blackfin CB750 F1 BLASTER  (Read 28041 times)

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Offline KRONUS0100

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Re: Blackfin CB750 F1 BLASTER
« Reply #100 on: June 19, 2014, 04:20:35 PM »
love them oil lines.  where did ya get em?
MATT
current bikes:  1976 CB750F, 1981 GS1100E
bikes owned:1981 GL1100I, 1990 GS500E, 1981 GS850, 1977 and 1979 GS750, 1974 CB750, 1975 CB750, and a 1982 GS750E

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #101 on: June 19, 2014, 06:13:21 PM »
Thx Matt.  See Reply #80 above pg. 4.

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #102 on: August 01, 2014, 09:47:52 AM »
Well, Phase 1 is essentially finished.  I just need to clean up the bird's nest in the headlight bucket to make room for the new headlight.  I have new LED turn signals wired up correctly now.  Of course, they do not flash - they stay on when switched.  So either I need in-line diodes or replace the thermal flasher relay with an electric one.  Which is the better way to go?

While waiting for the custom 4-2-1 pipes to be finished, I stuck back on the GPWerks exhaust so I can ride.  It runs a bit rough until warmed up.  So Blaster will get a tune-up - points, valve adjust, carbs cleaning (the float valves were sticking a bit) and synch, etc.  I haven't really pushed it yet, but it handles better than I anticipated on my mountain roads.  It's fairly "lively" and I like the feel of the 110/130 Bridgestones.  Not a "lean machine" like the 550, but no complaints.

Once I complete the 550 build, my plan is to pull the engine for a 836/Stage III balance/rebuild.







Seats which were awaiting install on some of the builds....

Offline Retro Rocket

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Re: Blackfin CB750 F1 BLASTER
« Reply #103 on: August 01, 2014, 03:55:02 PM »
Gorgeous looking bike Blackfin, what color blue is that ..?  ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #104 on: August 01, 2014, 05:28:28 PM »
I'm pretty sure it's a House of Kolor light blue custom mixed by eye with some grey and another blue.  My paint guy freestyle mixes.  I show him a color I like and he tries to match it.

Offline Retro Rocket

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Re: Blackfin CB750 F1 BLASTER
« Reply #105 on: August 01, 2014, 07:11:16 PM »
I'm pretty sure it's a House of Kolor light blue custom mixed by eye with some grey and another blue.  My paint guy freestyle mixes.  I show him a color I like and he tries to match it.

I'm after a similar color for a K model i have...Shouldn't be too hard a color to mix.. ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #106 on: August 01, 2014, 07:37:56 PM »
I'll ask him and try to get you in the ballpark.

Offline Retro Rocket

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Re: Blackfin CB750 F1 BLASTER
« Reply #107 on: August 01, 2014, 07:46:37 PM »
I'll ask him and try to get you in the ballpark.

Thanks   ;)  By the way, i like the look of the GPwerks pipe.... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline Ravie

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Re: Blackfin CB750 F1 BLASTER
« Reply #108 on: August 02, 2014, 07:21:41 AM »
You could probably go either way on the flasher. Since the electric relay doesn't rely on thermal reaction, I'd say that's probably the easiest. Why fake out the wrong type of flasher? 

I didn't read - is this bike stock wiring?

836 in a 550? Does that mean you're gonna use a 750 head er?  (I don't even know if that's possible...)

Absolutely beautiful bike. Ya'll do some killer werk up there.
1975 CB750K5 Rebuild in progress.
http://forums.sohc4.net/index.php?topic=139072.0

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #109 on: August 02, 2014, 07:41:21 AM »
Yes.  Stock wiring.

I meant once my 550 build is completed (Danielle) and have that to ride, I will pull this stock 750 engine and start the 836 build on it.

Offline Ravie

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Re: Blackfin CB750 F1 BLASTER
« Reply #110 on: August 02, 2014, 08:43:45 AM »
Yes.  Stock wiring.

I meant once my 550 build is completed (Danielle) and have that to ride, I will pull this stock 750 engine and start the 836 build on it.

oh, duh. I should learn to read better.
1975 CB750K5 Rebuild in progress.
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Offline petejohno

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Re: Blackfin CB750 F1 BLASTER
« Reply #111 on: August 06, 2014, 03:50:21 PM »
Hey Blackfin, any news on those pipes yet ?

Cheers  johno

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #112 on: August 07, 2014, 08:55:40 AM »
Told 2 more weeks.  The GP Werks pipes have the exact sound I wanted.  They will have to sell as "used" now.

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #113 on: August 15, 2014, 10:14:49 PM »
I am loving ridng this bike.  My only little annoyance is that with the Tarozzi low-rise clipons, the angle is too perpendicular to the bike in order to keep the fork tube clamp from hitting the tank.  I think I may use another set of clipons to sweep back the bars a bit more.

I finally installed a new flasher relay (dumping the thermal one which is on the ground) and now the LED turn signals work great!  All I have to do now is slap the headlight back into the bucket.

 

« Last Edit: August 15, 2014, 10:16:33 PM by Blackfin5 »

Offline calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #114 on: August 16, 2014, 03:31:09 AM »
You've built a real stunner there! Am particularly taken with the paint scheme and execution of it. Some bikes just look "better" with stripes, and some don't manage them well. The 750 seems to look best (to my eye) with a bit of stripes on it. One of my all time bikes from this forum right there!
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #115 on: August 16, 2014, 09:34:17 AM »
Thank you, Cal.  Given some of the builds here, that is quite a compliment. But all I've really done is slightly fab a seat, paint, and slap on a bunch of shiny new parts.  Lucky to have gotten a great starter bike and ideas from sohc4.

Cheers!

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #116 on: August 16, 2014, 09:49:18 PM »
Put on new clipons.  They are about 2" lower than the low-rise Tarozzis, but the swept back angle of the bars more than makes up for it.  For me, it's a very comfortable riding position with the Tarozzi rearsets.  I think they are a keeper.  The edge of the clipon tube clamp does hit the tank before the head tube stops, so I will have to be a bit careful.  Should not be a factor when riding; only when maneuvering off the side stand.

« Last Edit: August 16, 2014, 09:51:32 PM by Blackfin5 »

Offline bwaller

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Re: Blackfin CB750 F1 BLASTER
« Reply #117 on: August 17, 2014, 06:52:18 AM »
I live by the adage "#$%* happens" and I'd be waiting for that dented tank moment! Forgive me but could you drill & tap a hole for a short 5mm screw in the lower triple steering stop to limit travel to at least make me feel better?  ;D

Don't mind me, your bike looks good.

Offline calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #118 on: August 17, 2014, 06:57:31 AM »
I'm with Brent on that one. If you do ever happen to mar that paint, please don't ever post it. It will break my heart.  :'(

Perhaps a steering damper to help protect your tank?
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline MCRider

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Re: Blackfin CB750 F1 BLASTER
« Reply #119 on: August 17, 2014, 08:53:10 AM »
I'm with Brent on that one. If you do ever happen to mar that paint, please don't ever post it. It will break my heart.  :'(

Perhaps a steering damper to help protect your tank?
A proper steering damper won't limit fork lock to lock.

The tapping the lower tree lug and screwing in a 5mm (I used a 4mm) screw works great, I have done it.
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #120 on: August 17, 2014, 09:56:49 AM »
Ok, ok....geez.  I will.

Offline bwaller

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Re: Blackfin CB750 F1 BLASTER
« Reply #121 on: August 17, 2014, 10:15:12 AM »
Hey K, don't hate us man! I know it's hard to go back & redo things just when you think you're finished. As you know with custom work it takes lots of this stepping backwards before they're completely finished.

Or just go ride it as is, we'll all survive.  ;) 

Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #122 on: August 17, 2014, 10:43:03 AM »
Brent, already on it - but so tough on a Sunday in SD hearing all the bikes goin by on the main road while in a hot shop.

Offline MCRider

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Re: Blackfin CB750 F1 BLASTER
« Reply #123 on: August 17, 2014, 11:23:48 AM »
Brent, already on it - but so tough on a Sunday in SD hearing all the bikes goin by on the main road while in a hot shop.

I have the tank dent of which we speak. Thought I could work around it.
Ride Safe:
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1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #124 on: August 17, 2014, 11:59:59 AM »
A proper steering damper won't limit fork lock to lock.
Appreciate the clarification, but I'm already aware of their abilities and limits. It was a suggestion to help protect the tank as in everyday use. Perhaps I should have been more specific in the intent of my advice.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis