Author Topic: Homemade Manometer  (Read 73334 times)

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Offline TwoTired

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Re: Homemade Manometer
« Reply #50 on: July 09, 2008, 01:12:28 pm »
You guys are funny.  I can hardly wait for the Homemade screwdriver and Homemade socket wrench threads.  ;D

When will you get around to making a Homemade Dyno?

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

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Offline Dave-and-his-550

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Re: Homemade Manometer
« Reply #51 on: July 09, 2008, 01:47:17 pm »
I can hardly wait for the Homemade screwdriver and Homemade socket wrench threads.  ;D

























 :D

Offline Joksa

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Offline Joel

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Re: Homemade Manometer
« Reply #53 on: July 09, 2008, 03:32:34 pm »
Sweet.  I already have a couple wooden pallets.   ;D

Offline Dave-and-his-550

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Re: Homemade Manometer
« Reply #54 on: July 09, 2008, 04:22:11 pm »
Well here is the material I found at Menards:



Gauges x4: $27.88
Hose Barb x4: $6.56
Tubing 10ft. x2: $3.64

= $38.08

I found these Arc Welder tips at Orscheln Farm and Home:



Fit right in:



Pack of FIVE: $6.42

Total: $44.50!

The welding tips are to small for the hose I have connected to the gauges, so I'll have to find something that'll fit to the large hose, and get small enough for a smaller hose to then attach to the welding tips. Once I find that I'll test this thing out!

Did I get the right gauges? They are compression gauges up to 100 PSI, are vacuum gauges different?

Offline dustyc

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Re: Homemade Manometer
« Reply #55 on: July 09, 2008, 04:29:23 pm »
Did I get the right gauges? They are compression gauges up to 100 PSI, are vacuum gauges different?

They're different.
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Offline mark

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Re: Homemade Manometer
« Reply #56 on: July 09, 2008, 04:33:37 pm »


A mig welder tip/nozzle with M5 thread and 0,6mm hole would make
a good restrictor/damper AND a sync port adapter.

Cool! Thats the last piece I need to finish my homemade manometer. I got about $40 in material already. I hope they have these welder nozzles at Tractor Supply...

Where did YOU find em??

Cheers,

Dave

You might try harbor fright. Some of those little import welders used 5mm tips.

..... Do you have restrictors? .......

I have the leftover jets from the K&L carb kits. They might not be good enough for the carbs but they should be ok for the sync gadget.

You guys are funny.  I can hardly wait for the Homemade screwdriver and Homemade socket wrench threads.  ;D

When will you get around to making a Homemade Dyno?

Cheers,

Homemade screwdriver: 6" of 1/4" drill rod... heat one end cherry red and beat flat on anvil. file end square. heat other end and draw out to a long taper. bend tapered end to form a loop, then wrap 'tail' around shank.

Phillips® might be trickier.


Happy trails.


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F you mark...... F you.

Offline MoTo-BunnY

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Re: Homemade Manometer
« Reply #57 on: July 09, 2008, 05:47:38 pm »
I would like to again point out the actual Hondaline setup, for something to base your own project on - note the 'ball valves' ("dampners") and gauge scale range. i.e. NOT psi but vacuum, in inches Hg (mercury) !

By the way, I wanted to point out this, showing why you need the ball valves with this kind of carb synching set - the Honda OEM CB500/550 manual reads, on page 8: "NOTE: If the gauge needle is oscillating over a wide range, dampen the movement with the vacuum adjuster on the gauge.







Also, that these gauges are on sale on feeBay, company direct, for only $3.30@ - They are what I bought and the company shipped them out REALLY fast. Their listing says they are accurate to "±2.5% Full Scale, ASME Grade B" and the range is 30" Hg, just like the Hondaline gauges. They also have a metric range of kg/cm2 (the inner scale in red). They are (well) made in Germany and not some junk from China or something. They also have two calibration screws on the back.

(feeBay link below)
NOSHOK 1.5" Dial Size 1/8" NPT 30" Hg Vacuum Gauge NIB

here are more pictures of my home-grown setup:







Note that these gauges and the 1/8" 1/4" brass hose barbs are 1/8" NPT (national pipe thread) which is actually 3/8" size with like 27 threads per inch. The ball valves I bought are admittedly total overkill, albeit of the highest quality in chrome plated brass. I bought them real cheap on feeBay, as well, for like $2 each?!? They are Italian made - maybe something from espresso machines? lol   ;D    I also bought a whole roll of USA made vacuum hose in 1/8" 7/32" also on feeBay for about $15 to the door.


« Last Edit: July 16, 2008, 07:22:36 pm by MoTo-BunnY »
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1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
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Offline dustyc

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Re: Homemade Manometer
« Reply #58 on: July 09, 2008, 06:04:57 pm »
Note that these gauges and the 1/8" brass hose barbs are 1/8" NPT (national pipe thread) which is actually 3/8" size with like 27 threads per inch. The ball valves I bought are admittedly total overkill, albeit of the highest quality in chrome plated brass.

So, the 5mm adapters that screw into the manifold are equal to 1/8" NPT?

Also, do the ball valve dampers have to all be set the same?
1977 CB750

Offline MoTo-BunnY

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Re: Homemade Manometer
« Reply #59 on: July 09, 2008, 06:13:11 pm »
Note that these gauges and the 1/8" 1/4" brass hose barbs are 1/8" NPT (national pipe thread) which is actually 3/8" size with like 27 threads per inch. The ball valves I bought are admittedly total overkill, albeit of the highest quality in chrome plated brass.

So, the 5mm adapters that screw into the manifold are equal to 1/8" NPT?

Also, do the ball valve dampers have to all be set the same?

No - the manifold adapters are 5mm thread and have to be specially obtained - i.e. won't be at your hardware store (unless you go that MIG tip route). The brass hose barb that is 1/8" NPT is used from the bottom of the ball valve - for the hose to slide onto (where the green clip secures the hose, in my pictures) - they can be readily found for around $2-3, at any hardware store. They both share the same 1/8" 1/4" barb part but the base threads are different. 1/8" NPT is actually 3/8" which would be 9.5mm - a LOT bigger of a thread (NPT - nat'l pipe thread, are named all weird for some reason - 3/8" x 27 tpi (threads per inch) = 1/8" NPT?!?  lol). The shadow in the picture obscures it a bit, I know - sawry.  :P  Note that pipe threads are kinda weird in that they are tapered to help seal - however, you will still want to use that white Teflon tape or similar sealant (viable in pictures)

Here are what the adapters look like:



Here is the brass barb in 1/8" NPT




Also, yes, I set all the valves the same, to narrow the fluctuation of the needle. I have seen ball valves near identical to the ones shown in the Hondaline unit, at the hardware store - not sure what they are originally used for.
« Last Edit: July 16, 2008, 07:24:06 pm by MoTo-BunnY »
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hoppin' on down the bunny trail . . .

1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline dustyc

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Re: Homemade Manometer
« Reply #60 on: July 09, 2008, 06:33:46 pm »
Cool.  Thanks.  I was confused about the 1/8 being the same as 3/8, so I was confused the whole way around.

Also confused about the valves as restrictors.  I just wonder about how precise you have to be in setting them.  I guess if I made one I could see for myself. 

I don't know why this is an appealing project since I've got a Carbtune.  I guess it satisfies the mad scientist in us.
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Offline MoTo-BunnY

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Re: Homemade Manometer
« Reply #61 on: July 09, 2008, 07:11:46 pm »
Cool.  Thanks.  I was confused about the 1/8 being the same as 3/8, so I was confused the whole way around.  Yeah, the NPT threads are weird - 1/8"NPT thread is ACTUALLY 3/8" x 27 tpi (threads per inch) (which is NOT to be confused with 3/8" x 24 tpi - a real common brass fitting). Maybe the engineers just like to mess with wrench turners' heads?   ;D

Also confused about the valves as restrictors.  I just wonder about how precise you have to be in setting them.  I guess if I made one I could see for myself.  You just use them to isolate a single gauge or set them up all the same so the needles don't swing around so much - look at the Hondaline gauge set, I mean how accurate can you be with just a stamped handle like that? The vacuum reads the same - the needle just doesn't swing up and down so much, allowing you to read it easier. Why they are referred to as 'dampners' , I guess. Referring to carb synching, the Honda OEM CB500/550 manual reads as such, on page 8: "NOTE: If the gauge needle is oscillating over a wide range, dampen the movement with the vacuum adjuster on the gauge"

I don't know why this is an appealing project since I've got a Carbtune.  I guess it satisfies the mad scientist in us.  LOL.  . you know that's right! I also thought that the Morgan was a bit spendy for being all plastic - even down to the barb fittings and I just didn't trust the cheapy gauge sets from China. Like I said, I built mine for around $40 and it has German gauges, Italian (super-heavy duty. . lol) ball valves, USA vacuum hose, and recycled Honda hardware and I can say I made it myself - kinda fun.   :D   Also, these kinda projects beats knitting for a hobby, IMHO   ;)
« Last Edit: July 09, 2008, 07:17:28 pm by MoTo-BunnY »
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hoppin' on down the bunny trail . . .

1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline Dave-and-his-550

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Offline MoTo-BunnY

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Re: Homemade Manometer
« Reply #63 on: July 09, 2008, 07:24:43 pm »
(feeBay link below)
NOSHOK 1.5" Dial Size 1/8" NPT 30" Hg Vacuum Gauge NIB

$10 shipping  ::)

Where do you live?? I get $8.20 for UPS shipping. (they are shipping from Ohio and I live in Oregon) Also note that that is for as many as you want to buy (they 'combine/discount' shipping) - I bought 10! . . .lol.  (I plan on making a couple sets)

My bad - I see that it adds up total shipping as per how many you order. I still don't recall it being that high though, or I would have maybe e-mailed them looking for a discount (as shipping gougers are my pet peeve). I mean, these gauges are pretty small and light - they could totally send a dozen via US Postal Priority Mail for like $5-6, but they are shipping with UPS - better for heavier stuff but not small, light things like these.
« Last Edit: July 16, 2008, 07:59:50 pm by MoTo-BunnY »
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[img width= height=]http://farm4.static.flickr.com/3440/3846213109_ae572002d4_o.gif[/img]

hoppin' on down the bunny trail . . .

1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline UnCrash

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Re: Homemade Manometer
« Reply #64 on: July 09, 2008, 08:15:29 pm »
Quote
From TwoTyred You guys are funny.  I can hardly wait for the Homemade screwdriver and Homemade socket wrench threads. 

When will you get around to making a Homemade Dyno?

Cheers,

What are you yappin about?   :P  You would really like my last project....   ;)



Hey, it's better than knitting.......

  I know, I know it's a DOHC....
You can't make too much popcorn, but you can definately eat too much popcorn.

Offline MoTo-BunnY

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Re: Homemade Manometer
« Reply #65 on: July 09, 2008, 08:27:05 pm »
  I know, I know it's a DOHC....


O M G .. ..  that is just craziness. .. .. LOL.

I shudder to think of how many gawd-awful hours of knitting it would have taken, to do that project! At least that poor DOHC won't get chilled, now, though.  ;)
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[img width= height=]http://farm4.static.flickr.com/3440/3846213109_ae572002d4_o.gif[/img]

hoppin' on down the bunny trail . . .

1973 Honda CB500K2
1970 Ding-How aka Nova R-S w/3.5HP Tecumseh MiniBike
1970 Taco Model 22 deluxe w/3.0HP Briggs & Stratton MiniBike
1973 GMC Vandura 3/4 Ton Van (350CID V8)
1973 Dodge "Chinook" RV (360CID V8)
1985 Toyota Tercel Wagon SR5 (4WD - 3A engine)
1982 Toyota Pickup Truck (2WD - 22R engine)
1962? DriveX Pack-Mule (Tote-Gote clone)
1989 VW Jetta GLi 16V
1991 Diamondback Mtn. Bike

Offline Dave-and-his-550

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Re: Homemade Manometer
« Reply #66 on: July 09, 2008, 09:38:33 pm »

  I know, I know it's a DOHC....


Is it ridable? How much? My grandmother woudl LOVE it!  :D

Offline Buber

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Re: Homemade Manometer
« Reply #67 on: July 09, 2008, 11:11:56 pm »
You guys are funny.  I can hardly wait for the Homemade screwdriver and Homemade socket wrench threads.  ;D

When will you get around to making a Homemade Dyno?

Cheers,
Keep on with your irony. Actually when you buy a MOrgan tune or whatever else you are just admitting (to certain extent of course, and every case is different) your laziness. Of course there are things you can't do well in the backyard, but carb-syncer works on one of the basic principles of physics, and except having too much money or not enough time I simply don't see a reason why not make it at home. But it's me. Poor guy (actually I'm not poor, but I have wife and kids ;) ) with too much time on my hands.

And as per knitted bikes - check this out:

This one actually was rolling -was made for a TV advert.
And this
http://www.mirek08.de/auto/motocykl1/motocylk01.html
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Offline Ecosse

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Re: Homemade Manometer
« Reply #68 on: July 09, 2008, 11:37:04 pm »
That wicker bike is very impressive! The guy must like Italian sportscars; his site pops up as Lamborghini_Gallardo_LP560.

Good taste but odd?
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Offline TwoTired

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Re: Homemade Manometer
« Reply #69 on: July 10, 2008, 12:12:24 am »
Keep on with your irony. Actually when you buy a MOrgan tune or whatever else you are just admitting (to certain extent of course, and every case is different) your laziness.
Well, I reject your insult as bull#$%*e.  My time is worth something.  And, I have no shortage of meaningful things to do with by life.  I'm not shy about making tools for expedience, and I HAVE made screwdrivers, FYI.  In particular, a right angle one for carb adjustment.  Partly because I could make it with materials already on hand, and partly because I didn't want to wait a week and spend $100 on a tool I could make in under 30 minutes. 

I paid $50 for my gauge set in 1975.  Still works today.  Calibration is a non-issue.  A five way gang manifold is all you need, available at nearly any aquarium supply.  Hook all four to the same vacuum source and tweak (if necessary) till they all read the same.  The check and adjust takes a couple minutes, at most.  I actually did contemplate making my own manometer set back in 75.  But, when I realized the raw materials were going to be at least a third of the finished tool cost, I bought them instead, and went riding the latter half of the day, on my smooth running bike.  I STILL don't feel a bit guilty about buying that tool.  Jeez, back then, it was $30 to have the shop sync it, plus the wait in the queuing period to have it done.  With that rationale, I really only paid $20 for the tool!

So far, Dave has $44.50 in his set up and he still hasn't got the right gauge type.  He's over half way to $80 with his art project, not counting what his time is worth.  It's his time to spend as he wants.  And, if he's happy doing it, fine with me, though kinda amusing.  And, he'll benefit from a learning experience.  But, buying tools instead of making them is not done simply for laziness reasons.

Think I'll head out to the couch.  ::)

Cheers, ;D
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Dave-and-his-550

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Re: Homemade Manometer
« Reply #70 on: July 10, 2008, 12:28:34 am »
And, if he's happy doing it, fine with me, though kinda amusing. 

Well hey, I'm the type that doesn't want to wait for something. I'll drive around town, go to different shops looking for the stuff I need to build this thing it gives me something to work on. Also I don't want to wait a week for the tool to ship. Oh ya, and I'd rather save $30...Although technically won't be that much if you consider fuel costs... ::)

Offline TwoTired

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Re: Homemade Manometer
« Reply #71 on: July 10, 2008, 12:49:50 am »
And, if he's happy doing it, fine with me, though kinda amusing. 

Well hey, I'm the type that doesn't want to wait for something. I'll drive around town, go to different shops looking for the stuff I need to build this thing it gives me something to work on. Also I don't want to wait a week for the tool to ship. Oh ya, and I'd rather save $30...Although technically won't be that much if you consider fuel costs... ::)

I actually found my gauge set at the local MC shop about a mile away at the time.  But, you're starting to understand why I think this is rather amusing. (Not that that's a bad thing!)

As an engineer, I had to do the make vs. buy analysis more times than I can count.  After a while you get your butt bitten less with things you overlooked as a "cost" when you make something.  Making a one-off isn't too bad when you underestimate.  But, when you're making 100,000 or 500,000, a $1 mistake makes you cringe and wonder if you've earned you salary.

Anyway, I wish you well on your labor of love.

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Buber

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Re: Homemade Manometer
« Reply #72 on: July 10, 2008, 01:07:42 am »
I think you truly are tired.  ;)
That was not meant as an insult - as I DO realize that "to certain extent of course, and every case is different". But You can read this as you prefer.

Now for the costs - I can only congratulate and feel a bit of envy for folks that can buy a properly working set of carb synching tool for 4 cylinder engine for 50$. In Europe you can't. Period. And materials for mine costed me, maybe 20$ today (and in Europe that feels like 10$ to you in US. Honest), and I bought the components on my way back from work, so I feel perfectly happy and justified with the cost saving. I'm too young to have mine serve me for last 20 years or more, but it did serve me on few bikes already.

So - everybody to it's own tastes, and I definitely won't try to make DIY vernier caliper or something like that. BUT there are things that can be done DYI....

After all, I know quite a few motorcycle riders who will go for oil change to the dealer. Now, except for shortage of time/ample funds/lack of will to do it yourself - where's the point in it(because time-wise you do it faster yourself)? Yet so many people do it, "because that't the way you do it".
I say no. The way is not important, the results are.

But I'm off topic here. And I consider my time in the shed with my Honda as a relaxation time, equivalent to watching a game on TV. And that's something "meaningful" enough for me.

My very best regards, and have a nice sleep!
« Last Edit: July 10, 2008, 06:06:36 am by Buber »
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Re: Homemade Manometer
« Reply #73 on: July 10, 2008, 04:50:09 am »
Is a set of mercury stix no good?

Offline mystic_1

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Re: Homemade Manometer
« Reply #74 on: July 10, 2008, 09:01:23 am »
One can look at this type of thing differently when it's a hobby rather than a job.  For a lot of us, a lot of the return on investment with this stuff is in the joy of tinkering, solving problems, and inventing.

mystic_1
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