Mechanical Tach's

[67 Wickens]

It's time for a new Tach in the boat.... I was just wondering what kind of Tach you all would suggest? I don't really like the Stewart Warner Tach on the Glenwood site.

[RiverRacer]

Autometer can't beat it!....

[67 Wickens]

I didn't find or see any mechanical?? They all seem to be electric in the Marine section...

[socal_wrench]

I Have a moroso Mech For My model A. But it is tach drive not for a casale.

E-Bay $40.00. It is a 2/1 I think you need a 1/1 for the Casale

Don't Know what colors or Style you are looking for.

But There is Jones, AutoMeter, and a bunch more you just have to find the tach you like and go to the manufacture website and get the number for the mech ver. Summit, and jegs won't list them in there search menu but if you have the number they will show up with a price

[RiverRacer]

E-Bay $40.00. It is a 2/1 I think you need a 1/1 for the Casale

I have two drives off Casale and they are 2to1!..

[RiverRacer]

I didn't find or see any mechanical?? They all seem to be electric in the Marine section...

No mechanical just electric, way better and sanitary!.. I've had my ProComp memory tach since 91, still works flawlessly!..

[67 Wickens]

No mechanical just electric, way better and sanitary!.. I've had my ProComp memory tach since 91, still works flawlessly!..

So is there a different type of sending unit that goes onto the v-drive for a electric tach? Electrician I am not so the less I have to wire the better for me. However I do like the funtionality of an electric tachs.

[socal_wrench]

You can get a mechanical to electric adapter/sending unit.
But you only need that if you have a tach drive distributer or you are counting the gear box RPM's. If you are counting engine RPM's and have a distributer you can use a regular electric tach.

[Flatmvn]

I agree with Art, go with the Auto Meter electric tach you will love it. Electric tachs don't bounce like mechanical. As for the wiring the tachs come with easy to read instructions and diagrams. Should be very simple to wire.

Louis.

[RiverRacer]

You can get a mechanical to electric adapter/sending unit.
But you only need that if you have a tach drive distributer or you are counting the gear box RPM's. If you are counting engine RPM's and have a distributer you can use a regular electric tach.

Huh??, rpm's from the v-drive is the rpm's from the motor, no tach drive they're "electrical", just don't mount it solid and it will live for a long time!...

[socal_wrench]

Sorry I'm a little new to the boat thing and i confuse drive lines sometimes with the car stuff. DUH, Drive shaft off flywheel and the tach drive is on the upper shaft. Wow I feel retarded.

[RiverRacer]

Lmao!...... :D:D

[Moneypit]

Sorry I'm a little new to the boat thing and i confuse drive lines sometimes with the car stuff. DUH, Drive shaft off flywheel and the tach drive is on the upper shaft. Wow I feel retarded.

Drive shaft off flywheel??.......Now I feel retarded.....Does it use a clutch as well?.....MP

[BradP]

When I bought the red boat the memory tach was broken, called Autometer, told them I bought the boat with a broken tach. They fixed it and charged me shipping.:D

[RiverRacer]

When I bought the red boat the memory tach was broken, called Autometer, told them I bought the boat with a broken tach. They fixed it and charged me shipping.:D

There's another plus, besides being a top notch product you can't beat the customer service!..

[RiverRacer]

Drive shaft off flywheel??.......Now I feel retarded.....Does it use a clutch as well?.....MP

Ahh Ray, motor is in backwards drag style drives of the flywheel end!..:D

[67 Wickens]

No distributor... gotta Mag!??

[RiverRacer]

I do!.....:D

[jaminj946]

You said you are running an electric tach Art, and I have been 'lurking' around her long enough to know you run a mag, ( mag and injection,....me too,...spin it and it runs! simple!) So are you running a mechanical to electric adapter to run the tach? I think that was what somebody was asking, and if that adapter could be run off the v-drive? The threads off my v-drive look the same as my super-mag, but is the v-drive and tach different ratio?

[RiverRacer]

You said you are running an electric tach Art, and I have been 'lurking' around her long enough to know you run a mag, ( mag and injection,....me too,...spin it and it runs! simple!) So are you running a mechanical to electric adapter to run the tach? I think that was what somebody was asking, and if that adapter could be run off the v-drive? The threads off my v-drive look the same as my super-mag, but is the v-drive and tach different ratio?

Sorry I am a totally uneducated dumb ass, and I don't have a clue what you're talking about, so I have to resort to simple shit like 3 wires, 2 to power it and one to the mag done deal!...:)

[Moneypit]

Ahh Ray, motor is in backwards drag style drives of the flywheel end!..:D

Oh, so it's one of those boats huh......Put an Autometer electric tach on it and be done...... Memory, and excellent customer service........Ray

[waimo]

Distributor runs at half crankshaft revs .thats why two tachs for dist and v drive. 2/1 and 1/1.

[RiverRacer]

Oh, so it's one of those boats huh......Put an Autometer electric tach on it and be done...... Memory, and excellent customer service........Ray

Exactamundo!...:)

[RiverRacer]

Distributor runs at half crankshaft revs .thats why two tachs for dist and v drive. 2/1 and 1/1.

But the drives are the same 2/1, at least the ones I had were but they can be changed anyhow so no need for two different tachs!...

[rivergames]

i just installed an electric tach in my boat 2 weeks ago. i had to buy an adapter box that the tach runs to, then from the box it runs to the mag. it is an auto meter gauge. it wasnt hard to wire because they give you instructions that are easy to follow along with. The only problem is that my tach works for a few minutes as im driving, then all of a sudden the needle jumps up to 6 or 8 thousand and gets stuck????:confused: does anyone know why this would happen?

[RiverRacer]

Yep, you're not the only one to have that problem it's the box, just get the right tach and you won't have any problems!.. You didn't mount the tach solid right??..

[rivergames]

Yep, you're not the only one to have that problem it's the box, just get the right tach and you won't have any problems!.. You didn't mount the tach solid right??..


i mounted it to the dash. im guessing that is not the right way? how do mount it so its not solid?

[RiverRacer]

i mounted it to the dash. im guessing that is not the right way? how do mount it so its not solid?

No problem you can mount it in the dash, open up the hole in the dash a tad so it can move around, now take the mount that came with the tach and mount it on the back side of the dash making sure it's centered on the hole in the dash, now put the tach in the mount, it's not solid and yet looks like it's mounted solid!... :D

[rivergames]

so this takes away alot of the vibration out of the tach? i have the mount that is U shape. it can still mount in the center of the enlarged hole but i am almost convinced it will move around on me. Would it still be as usefull to wrap the tach with electrical take to take away the space that is between the tach and the enlarged hole? therefor it wont move around and the electrical tape will cushion the constant vibrating

[RiverRacer]

You don't need tape!... Mount the pedestal behind the dash and center it, then clamp the tach in the pedestal done deal, it's rubber mounted to absorb vibration but it's not going to move around!..

http://www.v-driveboat.com/vweb/attachment.php?attachmentid=29&stc=1&d=1206584816

[67 Wickens]

What size is your tach?

[RiverRacer]

What size is your tach?

It's a 5" Pro Comp but the body is a hair under 3 1/2"!..

[67 Wickens]

Is this the adapter needed?

[Flatmvn]

Here is the link to the tach that you need to buy. It is the one that Art is talking about and the same one that I run. It is an electric tach that works with mags, it only takes three wires to hook it up, no converter boxes or adapters. I think a 3yr old can wire it.

Oh buy the way don't pay any attention to what it says about using suppression core wires it will work just fine with any steel core wire or what ever you are running.

www.autometer.com/cat_gaugedetail.aspx?gid=2753&sid=9

http://www.autometer.com/img/products/6821_d.jpg


Louis

[RiverRacer]

Is this the adapter needed?

That's the one, but don't seem like they work worth crap from what I hear all the time!..

[RiverRacer]

Here is the link to the tach that you need to buy. It is the one that Art is talking about and the same one that I run. It is an electric tach that works with mags, it only takes three wires to hook it up, no converter boxes or adapters. I think a 3yr old can wire it.

Oh buy the way don't pay any attention to what it says about using suppression core wires it will work just fine with any steel core wire or what ever you are running.

www.autometer.com/cat_gaugedetail.aspx?gid=2753&sid=9

http://www.autometer.com/img/products/6821_d.jpg


Louis

Yep that's the one!...:cool:

[67 Wickens]

Ok, thanks guys. I was hoping this one would work.... I like the more traditional style.

Also, if I run the electric tach... what do I use on the v-drive inplace of the mechanical adapter? Is there a plug that I need to get?.

[RiverRacer]

Should work just get a pedestal for it!.. For the v-drive just get a plain cap!..

[raysoninoz]

If you want a mechanical tacho, you would be hard pressed to go past an old Smith's chronometric tacho. These don't move but the needle jumps instantly to the revs of the engine. These are cable drive, usually from the back of the casale. Depending on the model the adapter will be either 2:1 or 4:1. I ran one in a drag boat mant years ago and in my humble opinion are just the best. Saying that they are getting hard to find and most circuit boat racers here in Oz are using the electric autometer. My 2c for what its worth!:p

[RiverRacer]

Hmmm, never heard of that one, I don't think I have anyhow??, how are they at high rpm's though?, that's when the accuracy goes away, even the high dollar Jones wasn't that great even with a staright well lubed cable!..

[67 Wickens]

Should work just get a pedestal for it!.. For the v-drive just get a plain cap!..

I looked at the wiring instructions for both models 6821- yours 6801 -the other and the 6821 is the only one showing wiring to a Mag. The 6801 shows wiring to a coil type system.

[RiverRacer]

Yep, one for internal coil and one for external coil!..

[raysoninoz]

Hmmm, never heard of that one, I don't think I have anyhow??, how are they at high rpm's though?, that's when the accuracy goes away, even the high dollar Jones wasn't that great even with a staright well lubed cable!..

The Smith's chronometric tachos were fitted to some of the early British bikes (like Norton & BSA) they were also fitted to many open wheeler race cars F5000 and the like because of their stability at speed and were very accurate given the vibrations experienced by the bikes & open wheelers. They appear at time on ebay & still command a reasonable price given their age. Smith's stopped making them some 15 - 20 years ago & the company that bought Smiths either ditched them or didn't receive them in the bye out. Either way they are not available new... bugger!!!:mad:

[Mr. V-Driver]

I have two drives off Casale and they are 2to1!..

Except his are probably the Old style casting, Now Only offered in Billet!:D

[warpt71]

Only in billet??? Whats the advantage there?

[RiverRacer]

The Smith's chronometric tachos were fitted to some of the early British bikes (like Norton & BSA) they were also fitted to many open wheeler race cars F5000 and the like because of their stability at speed and were very accurate given the vibrations experienced by the bikes & open wheelers. They appear at time on ebay & still command a reasonable price given their age. Smith's stopped making them some 15 - 20 years ago & the company that bought Smiths either ditched them or didn't receive them in the bye out. Either way they are not available new... bugger!!!:mad:

Hmmm, I had a BSA back in the day and as I recall it did have a good tach, maybe that was it, just don't remember the name probably because I didn't pay attention, LOL...

[RiverRacer]

Only in billet??? Whats the advantage there?

Bling Bling, and a bunch of money, good question, LOL..

[warpt71]

Glad I dont need one. Come to think of it, I think I have a couple of the cast covers that came as extras w/ my boat!

[RiverRacer]

Yeah, I got some covers too hell if I know where they're at though, LOL...

[Mr. V-Driver]

Only in billet??? Whats the advantage there?

STRONGER! And,......... "Bling Bling" like RiverRacer Said!!! :D:D:D

[GR8WHITE]

I have the old jones tach coming out of the bow and the drive off the front of the v-drive but no cable, my question is im running a distributor and external coil, but i dont know if it doesnt work because it doesnt have the cable or some other reason but what would be the best option for me to get a tach up and running? is there some kind of electrical tach that would fit in the tube coming off the bow? :confused:

[lebel409]

Any tach that fits will work, mech or electric.

Measure the housing and order one from Rex Marine.

[Flatmvn]

If it is the housing that I am thinking of any 3 3/8 tach will fit in it I just measured one yesterday. So you can order any tach with that size. Jegs , Summit, Rex Marine or any speed shop should have something to your liking.

[Flatmvn]

I have the old jones tack coming out of the bow and the drive off the front of the v-drive but no cable, my question is im running a distributor and external coil, but i dont know if it doesnt work because it doesnt have the cable or some other reason but what would be the best option for me to get a tach up and running? is there some kind of electrical tach that would fit in the tube coming off the bow? :confused:

If you have the tach and the drive on the Casale but no cable it won't work. Is the tach a Mechanical tach or an electric. If it is mechanical Use a Drill and spin the tach to see if it works. If it works just have a cable and housing made up and install the cable and it should work. To check the drive on the V-Drive Fire the motor for a couple of seconds and watch to see if it is turning, If it is turning and the tach wouks and you replace the cable then ti all should work.

Louis

[GR8WHITE]

If you have the tach and the drive on the Casale but no cable it won't work. Is the tach a Mechanical tach or an electric. If it is mechanical Use a Drill and spin the tach to see if it works. If it works just have a cable and housing made up and install the cable and it should work. To check the drive on the V-Drive Fire the motor for a couple of seconds and watch to see if it is turning, If it is turning and the tach wouks and you replace the cable then ti all should work.

Louis

i need a job where i get off earlier and i need to put my boat in the living room so i dont have to wait till the weekend to check all this stuff out. :D

[GR8WHITE]

If you have the tach and the drive on the Casale but no cable it won't work. Is the tach a Mechanical tach or an electric. If it is mechanical Use a Drill and spin the tach to see if it works. If it works just have a cable and housing made up and install the cable and it should work. To check the drive on the V-Drive Fire the motor for a couple of seconds and watch to see if it is turning, If it is turning and the tach wouks and you replace the cable then ti all should work.

Louis

think it might just be easier to get an electrical tach that will fit in the hole and hook it up to the coil and be done with it, and plug the hole on the v-drive.

[RiverRacer]

think it might just be easier to get an electrical tach that will fit in the hole and hook it up to the coil and be done with it, and plug the hole on the v-drive.

Now you're talkin, I knew you'd wake up sooner or later!..:D

[GR8WHITE]

Now you're talkin, I knew you'd wake up sooner or later!..:D

do you have any suggestions art on which tachs are the best choice for this application?

[hm66Howard]

Art, are you also running electric gauges for your oil pressure, temp., etc?

[RiverRacer]

do you have any suggestions art on which tachs are the best choice for this application?

Autometer!..:D

[RiverRacer]

Art, are you also running electric gauges for your oil pressure, temp., etc?

No way, strictly mechanical on those!..

[hm66Howard]

No way, strictly mechanical on those!..That's what I figured! :D

[RiverRacer]

That's what I figured! :D

I don't trust electrical sending units!..:D