TOPIC: go karts

Hia every body, Im going to prove the groove in stockholms indoor carting recreation center. Hopefully all goes good and Ill be grooving ,
Ive downloaded an app that meassures vibration, will be interesting to se the difference before and after. Hopefully i will receave my ir thermometer to, will do consumption test, just emitions i dont think ill be able to do, If this works out good I will have a great referance . Have appointment on tuesday next week, wish mi luck folks.

I use a web service for billing custemers without having a company its called frilans finans works in europe and i have their app to

Ok i have now grooved a carburator off a honda gx 270 9hp did exsaust temp witch stayed the same vi ration test showed slight improvment milage test is the deciding factor for me to do all their gokarts and i will be updated on this tomorrow ill now try to upload some pictures
saludos desde Suecia Markus Olof Bohlin

Good luck with that one Markus, I was looking into that here in Washington but the places in the area all switched to electrics... what's up with that?

Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma

vibration test x y and z axis whent from .50 .14 .50 to .20 .02 .46
means it vibrated less after grooved ,at idle. Hopefully the guy who does the milage test wont use full throtlle all the time as i find it hard to see how there can be any gain then. !!?
Here are some pics

even at full throttle, as the air is drawn past the groove, one would think that the barometric pressure in the groove would be lowered enough to draw air into it.

One of the guys did his chain saw and ran tests at full throttle and did note improvements. Granted, getting 3/4 of a second improvement on a 3 stroke cut doesn't seem like a lot but if you apply that difference to a go-cart doing laps and calculate that out to an entire years worth of use, the gains should be easier to express.

Make believers out of them...

Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma

these carts have a rev stoper. I realice now that i shuld have unscrewd the idle screw to bring groove back a little and inprove idle consumption as they stand and idle a lot, i found a video on training for small carbs on gadgetmanglobal, just wish i would have seen it before, keeping thumbs up hopefully ill be able to do all their karts. The chain saw cuts faster, the kart goes same top speed, he did say it felt like it had more power comming out of corners, ye right i see what you mean after many races with better acceleration the lap times shuld go down meaning a little less time driving and there for in the long run saving gas. then he had a race with a hevier man who used kart number4 the grooved one and they where even all the time.

I will now start to smothern out the tb plate as uneveness might create turbulance that would affect the groove winds.

I think your idle would be okay, as long as there is air going past the groove it is having some effect on the fuel comsumption.

I have a kart track here in Washington that uses the Birel N35 with the Honda 9hp 4 stroke. It would be a good foot in the door if your customer has all of theirs done.

Either way, I'll pay them a visit.

It's already sounding like a win, let's hope they see the long term value.

Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma

Markus,

I'm curious, what price are you considering for this type of equipment? (and volume of course) Would you be giving them a per piece price or a package deal?

Determining price to charge for some of the hardware is not my strong suite.

What I have determined is that you can't justify charging the private sector the same price for grooving their lawnmower as you would for the "Lawn care" professional, the cost and return on investment is just to far apart.


Any thoughts on this, family?

Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma

Im doing a per price, but was considering a packet price, just ended up being a per price. I did the first one for free and am letting the results make em decide if they want them all to be done, Then I told them Ill charge em 750 kroners eatch. Half of that goes on taxes and insurances...

Okay, I had figured $125 - $175 U.S. for commercial motors of that variety.
The 750 Kroners would be roughly $113 U.S., so we're in the same ballpark.



Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma

Just got off the phone with the gokart club, They havent noticed any gain in petrol efficency, The groove had some effect but not enoughf for futher work together. This as they give full gas most off the time. better results in lawnmovers as power increase will allaw the engine to not need to automatically give more gas when more power needed. Now going to try and get some custemers that cut a lot off lawns. golf courts and kommunity. lets all keep grooving.
Markus sweden. tips on custemers anybody.

Hey Markus!

You are really doing well with the Groove. While I'm at a loss to explain why the mod didn't cause an efficiency increase, it may be something simple, like the size of the bit you used. If possible, use the next size larger bit.

Other than that, there is only one recommendation I could make that will CERTAINLY cause the results to change. INCREASE THE SPARK GAP.

Please get back in touch with the mechanic and ask him to follow the spark plug regapping procedure. The one single cylinder engine I have is now at 300%, and the gap was increased from .024" to .044". A TREMENDOUS increase in gap width, and the engine has never run better.

Keep on Groovin'!

Ron

Ron, you had done a video on small engines and commented about doing a partial groove on the generators.

I took that as a 4:00 to 8:00 O'clock sweep, which I did on my generator along with the spark plug gapping, with a 200%+ increase. ( With the small bit )

Would go cart engines fall under the same category as the generator if, even with the throttle, they have a governor on them to regulate the engine speed.

Just looking for possible options.

Karl Fortner
Tacoma, Wa.
Gadgetman Tacoma