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  #81  
Old 11-18-2019, 03:59 AM
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Awesome!!!!!!!!!!
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  #82  
Old 11-19-2019, 05:09 PM
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Thanks @landuse.

I have a couple of items to work on before I get all my tic marks for the build off.

Next day out will be after brake bleeding, adding a kill switch.

Optionally, I hope to re-drill my tiny 110cc wheels and try the shorter tires for better starts, and add the Ackerman angle on the steering to tighten the turning radius.

oh, and my free sticker !


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  #83  
Old 11-22-2019, 09:45 PM
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I thought the kart quit last weekend because it was out of gas.

After taking a closer look, I noticed the choke lever was gone and the carburetor was loose. I found one of the nuts inside the top of the carburetor.

Glad it was too big to drop all the way through !

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I must have left them loose when I put in the jets and the air filter adapter.
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  #84  
Old 11-23-2019, 10:49 AM
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Ackermann built in ? I want to improve the steering radius, so I am checking to see if the steering knuckles can be optimized for the new wheelbase. the front end was on a 110cc quad, and now it's on kind of a stretched kart .

So I tied a string in the middle of the rear carrier and stretched it to the kingpin bolt to see how the steering knuckle lines up....



some close ups of the front...




Looks to me that the kingpin angle is making it so the tie rod is in line with the string.



The one thing I noticed is that with the small steering wheel, it's kind of hard to turn. I am thinking I may try to make the knuckle another inch longer for more leverage. I would do a similar mod to the steering end as well.



That is if I get around to it.
must...stay..focused...

Bleed the brakes again and add kill switch then I can call it done.


OK, so I got a nice toggle (kill)switch, and made a console out of sheetmetal. While I was at it, I added another hole for a light switch.


Since I had to take the steering wheel off to do the console, I couldnt let the opportunity pass by without doing something about the steering.



I added about 3/4" to the steering arm so that it will push the steering knuckles a tad more.
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  #85  
Old 11-29-2019, 08:04 PM
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Added the kill switch and a 9" LED off-road light.


I noticed the LED light says 12 or 24v, so I decided to try some tool battery packs. I added some alligator clips and tried a 18v ni-cd pack, but decided to go with my 18v Ryobi Li-ion pack since I have a few of these.


I used a tie wrap around the top of the Ryobi pack to hold the alligator clips in place. that makes the back of the alligator clip stay in contact with the battery contacts.



...karting into the night








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  #86  
Old 11-29-2019, 10:13 PM
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Quote:
Originally Posted by gegcorp2012 View Post
Ackermann built in ?
...

So I tied a string in the middle of the rear carrier and stretched it to the kingpin bolt to see how the steering knuckle lines up....

Looks to me that the kingpin angle is making it so the tie rod is in line with the string.
mean.. unfortunately the "pivot" you're interested is essentially the kingpin at the height of the spindle axle..
(that's there the string ideally should end up)
Click image for larger version

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so you are slightly off.. maybe half of the knuckle head,
but since the angle doesn't change too much
I'd still say your geometry should be okay
(assuming the string is indeed perfectly straight)
it might not be absolutely perfect alright,
but certainly far better than many other setups we've seen

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  #87  
Old 11-30-2019, 12:17 AM
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Thanks @itsid
It's not right as it could be... I may have made it a little works lengthening the steering arm.

Here is a better photo to show the axle and arm.

Looks to be about 90*, so I will see about adding some material to make the arm longer and move that knuckle head over.

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  #88  
Old 12-03-2019, 08:54 PM
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Made the adjustments to the steering knuckles tonight.





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  #89  
Old Yesterday, 12:05 PM
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Test and tune... Working on instrumentation.

I added a tiny LCD tach, and a cell phone holder for hands free operation of the GPS speedometer. Also trying out a dash camera that my Sister gave me last year... my Son is a techie and he suggested I use a rechargable USB battery and it works (!)...

I will try to upload a video then see if I can mount the dash cam somehow and take a video going around my track in the yard.

The GPS is saying 16 mph tops on my yard track, so I wanted to add some instrumentation to figure out what is going on and what to work on next.

I hope to monitor the TC and see if it is shifting the driven clutch all the way. With a 10t driver sprocket and a 60t axle sprocket and 20" tall tire, I should see about 1mph per 100 RPM... so either the engine is not hitting 3800 RPM or the TC is staying in low gear or its slipping due to tall overall gearing (even downhill?).

Once I get this sorted out, I will pull the governor.

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  #90  
Old Yesterday, 12:08 PM
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Awesome
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