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Adding an Engine Hour to my KDX - Easier than I thought it would be.

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Posted by: BRush---------------------

I installed a Yamaha (actually SenDEC) engine hour meter on my KDX. This was the right time. I just got the bike back together after a top & bottom end rebuild. I was prepared to struggle with the mounting issue, but it turned out to be really easy because of a couple of unused factory threaded bolt holes up near the steering head. See HERE for photos.


Posted by: JasonWho---------------------

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Posted by: dan1608---------------------

Thanks for the info. I was thinking about getting one of those but wasn't sure where to get one.


Posted by: Knobbyjake---------------------

Great how to write up! Thanks! This should definitely be permanently placed in the KDX tech tips at the beginning of this forum.


Posted by: John Harris---------------------

Good idea. What does one of the meters cost from Yamaha? How is the meter powered or rather how does it get the input to measure the hours? See I am uninformed or rather dense! Thanks John


Posted by: Colorado Mike---------------------

Quote:
Originally Posted by John Harris
Good idea. What does one of the meters cost from Yamaha? How is the meter powered or rather how does it get the input to measure the hours? See I am uninformed or rather dense! Thanks John



He tells you the answer to both those questions in his article.



Posted by: BRush---------------------

Quote:
Originally Posted by JasonWho
Hi. Thanks for that article. That is very interesting, and you did it at exactly the right time. How much did your bottom end rebuild cost?

Thanks.


I had my dealer do it. The bottom end rebuild cost me a little under $500, parts included. That’s all seals & bearings replaced, and a crack in the case repaired. I took the engine out of the frame myself. Nice power boost. I’m pulling things in 3rd gear now that used to take 2nd.


Posted by: BRush---------------------

Quote:
Originally Posted by John Harris
Good idea. What does one of the meters cost from Yamaha? How is the meter powered or rather how does it get the input to measure the hours? See I am uninformed or rather dense! Thanks John


The meters don’t require any power. The SenDEC site calls them “Self Powered” by which they must mean that any power they require they get via the induced voltage from the sense wire. These things are epoxy encapsulated and very rugged. The sense wire just wraps around the spark plug lead. See the SenDEC web page link in the article.


Posted by: John Harris---------------------

BRush--good job with the installation and post. My problem is that I did not follow all the way through the several screens to get all the information. It is terrible to be both slow and dense! Thanks for your help and kind response. John


Posted by: gwhII---------------------

Hey, John--I know the feeling. :-) BRush, thanks for the link to SenDEC. Their FS500 gadget looks good in that it also provides a tach. That may be handy.

Best,
Greg


Posted by: BRush---------------------

Quote:
Originally Posted by gwhII
Hey, John--I know the feeling. :-) BRush, thanks for the link to SenDEC. Their FS500 gadget looks good in that it also provides a tach. That may be handy.

Best,
Greg


There's also a cheaper one that does a tach as well, it's the 806-100-1032. It's about half the price of the FS500.

http://www.sendec.com/meters/html/80610x.html

If I was going to shell out for the FS500, I'd probably kick in the extra $20 and get the FSA600 since it's the same size and has an hour meter, 16000 rpm tach, service time, and resetable job timer.


Posted by: gwhII---------------------

Quote:
Originally Posted by BRush
There's also a cheaper one that does a tach as well, it's the 806-100-1032. It's about half the price of the FS500.

http://www.sendec.com/meters/html/80610x.html

If I was going to shell out for the FS500, I'd probably kick in the extra $20 and get the FSA600 since it's the same size and has an hour meter, 16000 rpm tach, service time, and resetable job timer.


I saw that one too (-1032) and unless I'm misunderstanding the description it's for a 4-stroke application. The reason I liked the FS500 is that I've got a Trailtech speedo and it can be programmed for service alarms though there are times I'm riding around without it in and the 600 would be more accurate since it would be permanent. Yeah, what's an extra $20 at that point. Guess I have another gadget to put on the list of things I want. :-)

Best,
Greg


Posted by: BRush---------------------

Quote:
Originally Posted by gwhII
I saw that one too (-1032) and unless I'm misunderstanding the description it's for a 4-stroke application. .


I admit to being puzzled by that too. It says 1 spark = 1 rpm, so why wouldn't it work on a two stroke? Similar panel-mount models (805-100-0222) indicate 1 spark = 1 rpm and the descriptive text reads "Hours/Tach, for most single and twin cylinder engines, 2 or 4 cycle" so I wonder if it's an inadvertent omission on the -1032?


Posted by: 70 marlin---------------------

Nice clean job


Posted by: r6demon---------------------

Great post fella VERY informative


Posted by: gwhII---------------------

Quote:
Originally Posted by BRush
I admit to being puzzled by that too. It says 1 spark = 1 rpm, so why wouldn't it work on a two stroke? Similar panel-mount models (805-100-0222) indicate 1 spark = 1 rpm and the descriptive text reads "Hours/Tach, for most single and twin cylinder engines, 2 or 4 cycle" so I wonder if it's an inadvertent omission on the -1032?


I just called SenDEC and the -1032 will work with a single cylinder 2-stroke. 7k RPM should be enough for most of our ignition tuning. I may have found another gadget to buy. :-)

Best,
Greg


Posted by: jdbrusch---------------------

One thing make sure the hour-meter is mounted to something solid,such as Brush has done,the frame.I deal with them quite abit a work and if they are subjected to alot of vibration they reset to 0.I originally mounted mine to the side of the odometer with double sided tape and hard hits to trees with the barkbusters would reset it.
They can be bought at most small lawnmower repair shops and I think Sears sells one also.


Posted by: 70 marlin---------------------

Thanx for that tid bit!


Posted by: BRush---------------------

jdbrusch, what was the brand that would reset? Some types seem more rugged than others. We’ll see how this one holds up. It has some pretty impressive specs for g loading.
Operating temperature: -40F to 160F, -40C to 71C
Shock: SAE J1378 55g's
Vibration: SAE J1378 20g's
Humidity: SAE J1378 95% RH
100% Epoxy encapsulated


Posted by: jdbrusch---------------------

BRush it was a SunDec I have never had any problem with them at work,on generators,pump,etc,it just seemed to be the one mounted on the odometer,I have since moved it to a solid mount(like yours) and it has worked fine for the past 8 months,I do some fairly good tree slappers,so it might just be me


Posted by: Studboy---------------------

I have a Tiny Tach and it works well.


Posted by: camrider---------------------

You can get a "Briggs" hour meter for $25 off of E pay. They are mfg'd by Sendec with the Briggs Statton logo. Same meter for much less. I have one and it works great.



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