Author Topic: Home brew speedo/tacho in one housing *UPDATE on page 2*  (Read 5351 times)

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Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #25 on: April 15, 2013, 02:35:38 PM »
UPDATE!!
The last few steps were as follows:

- Got the gauge face printed on glossy sticker paper. Couldn't find a place to do it with UV vinyl or whatever but this way only cost me $1.50 and I can always change it later on if I want.



- Cut out the backing for the face out of acrylic.



- Had a few mishaps trying to weld the thin sheet metal of the housing with my crappy welder, so had to patch and do some body work to get everything smooth again.



- Put down a layer of epoxy resin/hardener on the bottom to fill all the voids and make the base more solid.



- Smoothed out the base (the little tab is part of the latch mechanism I made to hold the gauge tightly together)



- Primed the housing and painted it (the tab seen here is part of the hinge)



-  This is how the tab/slot on the back goes together to form the hinge



- Got the LED strips mounted inside the base.



- Cut the tach needle to shorten it and silver soldered it together again




- Put everything back together and voila (you can see in a few of these pics the extension springs used to keep the housing closed)
Note that at the moment the whole assembly has not been fully sealed/waterproofed etc. but I have a plan for accomplishing this with various rubber seals from old gauges and the ubiquitous "box-o-parts-box".











- Here is what is looks like lit up in the dark. I don't like the way some of the face is darkened by the needle mechanisms inside... I'll think of a way to sort it. At some point I'll probably I'll end up making the whole face non translucent and just use the old "light around the edges" method employed by the factory gauges.


Well that's it guys. There are certainly a few things I plan on changing eventually, but having the bike out of commission this long has taken a toll and I need to get out and ride.
What do you think?

P.S. - Keep your eyes peeled for a thread regarding my unconventional method for achieving the "fully shaved" triple tree look I so desired:


P.P.S. - I'm still looking for the various speedo drive parts mentioned on the first page, so if any of you know where I can obtain them for cheaper than cheap, do let me know!

-Davis
« Last Edit: April 15, 2013, 03:08:05 PM by davis96 »
'74 CB350F - sold
'71 CB500K

Offline Frankensteins Bride

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #26 on: April 15, 2013, 02:53:47 PM »
That is really awesome! :) Great job (and yet another thing to go into my future to do list! LOL)
Working on: 78 Cb750k
Waiting for arrival: 73 Cb750

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Offline lwahples

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #27 on: April 15, 2013, 03:27:22 PM »
Still amazed you are able to make this work,Looks good!

Offline kslrr

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #28 on: April 15, 2013, 06:15:32 PM »
It looks like the new Arc swing is less than the original stock (i.e. 180deg vs. 270deg).  How did you adjust for that?
Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
        2004 HD XL883C Custom
        1977 Yamaha XS750D (in progress)
Then 1972 CL175
        1964 Yamaha YGS-1T
No ride is a Bad ride

Offline KCbarsos

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #29 on: April 15, 2013, 06:21:45 PM »
great job. very cool  8)

Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #30 on: April 15, 2013, 09:27:23 PM »
It looks like the new Arc swing is less than the original stock (i.e. 180deg vs. 270deg).  How did you adjust for that?

Its a non-issue for me really, as I have no delusions of revving past 10.5k rpm or going over 90mph on this 42 year old bike
'74 CB350F - sold
'71 CB500K

Offline Retro Rocket

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #31 on: April 15, 2013, 09:41:37 PM »
It looks like the new Arc swing is less than the original stock (i.e. 180deg vs. 270deg).  How did you adjust for that?

Its a non-issue for me really, as I have no delusions of revving past 10.5k rpm or going over 90mph on this 42 year old bike

Delusions..?  These old girls will easily go over 100mph safely.... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
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Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #32 on: April 15, 2013, 10:26:21 PM »
It looks like the new Arc swing is less than the original stock (i.e. 180deg vs. 270deg).  How did you adjust for that?


Its a non-issue for me really, as I have no delusions of revving past 10.5k rpm or going over 90mph on this 42 year old bike

Delusions..?  These old girls will easily go over 100mph safely.... ;)
Someone else's bike and someone else's personality sure; but I know my bike and I know myself, and there's simply no need for the higher ends on either spectrum
'74 CB350F - sold
'71 CB500K

Offline faux fiddy

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #33 on: April 16, 2013, 01:52:07 AM »
Looks pretty real-  or, manufactured to me.  Nice job.
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Offline rickmoore24

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #34 on: April 16, 2013, 08:45:43 AM »
I love this, really nice work!
1972 CB750 K2 (Daily Runner)
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1973 CB750 K3 (Hardtail 836cc)
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Offline Bankerdanny

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #35 on: April 16, 2013, 09:35:12 AM »
Really interesting project and great craftsmanship. Kudos to you.
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Current: '76 CB750F. Previous:  '75 CB550F, 2007 Yamaha Vino 125 Scooter, '75 Harley FXE Superglide, '77 GL1000, '77 CB550k, '68 Suzuki K10 80, '68 Yamaha YR2, '69 BMW R69S, '71 Honda SL175, '02 Royal Enfield Bullet 500, '89 Yamaha FJ1200

Offline kslrr

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #36 on: April 16, 2013, 10:47:40 AM »
It looks like the new Arc swing is less than the original stock (i.e. 180deg vs. 270deg).  How did you adjust for that?

Its a non-issue for me really, as I have no delusions of revving past 10.5k rpm or going over 90mph on this 42 year old bike

Now I understand.  You simply deleted the upper ranges of the gauges rather than compress the original range into a smaller arc swing.  I had to look at the gauge face a 2nd time.
Now  1972 CB350FX (experimental v2.0)
        1981 CB650c Custom with '79 engine (wifes)
        1981 CB650 engine
        2004 HD XL883C Custom
        1977 Yamaha XS750D (in progress)
Then 1972 CL175
        1964 Yamaha YGS-1T
No ride is a Bad ride

Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #37 on: April 16, 2013, 06:34:11 PM »
Looks pretty real-  or, manufactured to me.  Nice job.

Really interesting project and great craftsmanship. Kudos to you.

Thanks guys I appreciate the compliments especially regarding the execution of the work... Makes the time and effort I put in to achieve a factory-like final product worthwhile!
'74 CB350F - sold
'71 CB500K

Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #38 on: April 16, 2013, 09:19:59 PM »
Today I fabbed up a bracket to hold the gauge and finishe up the wiring (including my nifty new neutral light installed through the steering stem nut). I took her for a little ride around town and the tach works perfectly. The speedo presumably works too, but will have to remain inoperable until I gather the infrastructure of parts needed for it to be functional.



My new oil pressure gauge works great too. It is a $5 air pressure gauge from harbor freight, FYI. It's worth noting that internally this gauge is sturdier and of much higher quality than the sunpro unit I had previously. So if you want to run a gauge like this all you need to buy is the separate tubing/fitting kit for an automotive unit
« Last Edit: April 17, 2013, 02:15:48 PM by davis96 »
'74 CB350F - sold
'71 CB500K

Offline davis96

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Re: Home brew speedo/tacho in one housing *UPDATE on page 2*
« Reply #39 on: April 17, 2013, 02:27:45 PM »
Davis96,

Dude you need to go into Spedo-Tach Biz! :) Just a  fukin beautiful jobber.

rt
Thanks mate, I actually briefly considered making a few more of these since I already have the materials and process. Maybe I will if a set of clocks comes around eBay for cheap
'74 CB350F - sold
'71 CB500K