'61 Lark III 40 HP tach question

[jpollman]

Hello,<br />I did a search for "evinrude tachometer" and got a few hits. I ran accross a post made by Lark40 that said he was going to put a Tiny-Tach on his '60 Lark 40. I was just wondering if it was ever done and if it worked. I have a '61 Lark III 40 HP that I'd like to put a tach on. I tried last year and it seems that I was running into trouble trying to find the right tach for this application. I've got three different props for this motor and I'd REALLY like to have a tach available so I can evaluate the performance of each prop and decide which one is going to work best for my all around use.<br /><br />So, I quess this question is directed at Lark40.<br />If you see this, I'd appreciate it if you could let me know if you did install the tiny-tach and if you did, how it works.<br /><br />Thanks in advance for all replies.

 

[Lark40]

Re: '61 Lark III 40 HP tach question

I did install a TinyTach and it works great.<br /><br />Make sure you speak with a tech when you call your order in. That is needed to properly identify which model will match the firing-per-revolution pattern of our engines.<br /><br />I ordered a longer lead (14') with mine for a small extra price. Was told to wrap the lead around both plug wires. <br /><br />I highly recommend the TinyTach.

 

[12Footer]

Re: '61 Lark III 40 HP tach question

The only thing I don't like about the tiny tach is the battery that can't e changed-out.Lithium bats last for 3-5 years, but after that, you need to do surgery on the tach, or buy a new one.

 

[jpollman]

Re: '61 Lark III 40 HP tach question

Thanks guys.<br /><br />12footer, I noticed that too. I don't think I want to be spending $50 every 3-5 years to replace my tach. I think I might just go with an analog unit. Besides, I noticed the specs on that tiny-tach and it says that it only updates every 2.5 seconds. I think I'd rather go analog.<br /><br />Thanks again for your input guys !

 

[Lark40]

Re: '61 Lark III 40 HP tach question

What do you in mind when you say you want an analog unit?<br /><br />You have a magneto ignition two cycle two cylinder engine with one set of points for each cylinder. <br /><br />No exactly a generic Chevy V-8 configuration.<br /><br />I researched many other boards, and TinyTach was the only currently made permanently installed product that could measure these engines. There were some handheld products made for dirt bikes.<br /><br />Let me know what you plan to use.

 

[jpollman]

Re: '61 Lark III 40 HP tach question

Hello Lark40<br /><br />Now that I think about it I think you're right. That is exactly the problem I ran into last year when I was trying to find a tach that would work with this mill. I guess if the tiny-tach works, I'll probably just go that route. I think I'm going to call them tomorrow and order one. I'll get the measurements I need and order enough wire so that I can mount the tach up on my console. Thanks again.