Author Topic: Pin2Hot's 73 CB750  (Read 33618 times)

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Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #275 on: October 13, 2020, 09:21:12 am »
That's quite a wiring job using the circuit board.  Will there be any bodywork between the light/electronics panel and the dash instruments, or are you just going to sheath the wires with loom?

The big fat connector going from the main board to the dash will get covered somehow, not sure with what just yet.

Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #276 on: October 13, 2020, 09:25:49 am »
Is any of your electronics water sensitive or are you encapsulating the board components?

How are you handling aiming of your headlight and fog lights?

The boards will get a conformal coating and all connectors will be filled with dielectric grease.  Won't stop all water intrusion but I don't plan on riding this bike if there's even a hint of rain in the forecast.  I understand it's impossible to avoid water but I'm hoping the conformal coating and grease will prevent any issues.

The bracket will allow for right/left movement and I haven't fully sorted how I'll adjust up/down.  We'll see!

Offline jeff d

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Re: Pin2Hot's 73 CB750
« Reply #277 on: October 16, 2020, 07:21:34 pm »
Very cool build!  You should include an XLR connector somewhere as a signature.
Longtime caretaker of Hondas but new to SOHC/4's

Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #278 on: October 16, 2020, 08:26:48 pm »
In the 25 years or so that I've used this handle, you're only the 2nd person to ever get it.  Thanks for the kind words!

Offline RAFster122s

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Re: Pin2Hot's 73 CB750
« Reply #279 on: October 17, 2020, 12:00:34 am »
XLR setup as an ignition kill switch, if you don’t have the properly wired XLR connected then relay won’t work and bike won’t start...
David- back in the desert SW!

Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #280 on: October 17, 2020, 01:33:28 pm »
XLR setup as an ignition kill switch, if you don’t have the properly wired XLR connected then relay won’t work and bike won’t start...

Ha, that's a great idea.  "Sir why are you plugging a microphone into your bike?"

Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #281 on: October 19, 2020, 06:23:01 am »
Getting close to being finished with wiring this thing.  Still need to run two more wires up front for the turn signals, terminate the 8 mUnit IN/OUT wires into their connector and create a couple more plugs for the front turn signals / accent halo LED strips (which have yet to make an appearance in any photos . . . more to come there).

Here's a photo showing how I'm using that weird looking 3D printed wire guide.  I ran out of super tiny zip ties so as soon as more arrive I'll tidy up the straight wires by tying them to their respective "arm".  In this photo, up is towards the back of the bike.


One very satisfying activity I accomplished this weekend was drilling holes in the handlebars to accommodate the stock Honda controls I'm using.  The turn signal / hi beam / horn combo unit, as well as the starter/kill switch and throttle assembly all have posts that locate themselves in the handlebars to prevent rotation.  I was able to lock them in their finals spots and tidy up the wires.  Very nice seeing the controls in their final form.
Left control:


Right:



Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #282 on: January 12, 2021, 02:20:23 pm »
I did some things.  Was able to test fit the decorative plate that will sit on top of the aluminum headlight mounting plates.  This decorate plate will hold the turn signals and accent LED strips.  With this blue plate, I'm trying to decide on how best to route the wires that drive the accent lights and turn signals.  I think I'll end up routing them from the bottom.

Decorative plate with turn signals and accent "halos":
 

Front view of the accent lights turned on:


Turn signal with the wire routing on the top side:


It was pretty neat finally seeing this vision come to life, I've been thinking about this for literally years.  I'm really happy with the way it turned out.  Should look really neat once the plate is black and the headlights are in place.

BYE

Offline BenelliSEI

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Re: Pin2Hot's 73 CB750
« Reply #283 on: January 12, 2021, 05:44:50 pm »
Totally fascinated! Keep up the regular posts.

Offline SOHC4 Cafe Racer Fan

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Re: Pin2Hot's 73 CB750
« Reply #284 on: January 12, 2021, 09:18:18 pm »
I did some things.  Was able to test fit the decorative plate that will sit on top of the aluminum headlight mounting plates.  This decorate plate will hold the turn signals and accent LED strips.  With this blue plate, I'm trying to decide on how best to route the wires that drive the accent lights and turn signals.  I think I'll end up routing them from the bottom.

Decorative plate with turn signals and accent "halos":
 

Front view of the accent lights turned on:


Turn signal with the wire routing on the top side:


It was pretty neat finally seeing this vision come to life, I've been thinking about this for literally years.  I'm really happy with the way it turned out.  Should look really neat once the plate is black and the headlights are in place.

BYE

Can you do a quick video showing how the indicators flash and interact with the halos?
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline Pin2Hot

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Re: Pin2Hot's 73 CB750
« Reply #285 on: January 13, 2021, 05:13:03 am »
Can you do a quick video showing how the indicators flash and interact with the halos?

Sure, I actually made one back in 2016 (holy crap this has taken a long time!) that shows the basic idea of how they work.  A lot has changed since I shot this video (circuit board / different relays / different LED strips) but the functionality is exactly the same.  Each halo turns off when its corresponding signal turns on.  I'll try and get a video shot of them functioning on the bike sometime soon but it might be a bit before I can get that done.

« Last Edit: January 13, 2021, 05:16:34 am by Pin2Hot »