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 Post subject: 2016 125cc pit bike
PostPosted: Thu Jul 27, 2017 1:43 am 
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Posts: 1630
Location: Savannah GA
Figured I should start a build thread for this. My wheels and tires came in last week and I just had two days off of work so I spent both days working on the bike. I got the wheels mounted and center. The front pretty much went right on, the back was a whole other story. I also got my battery wired up and mounted. I had the lights working before off just the stator, but the bike would die after a few blocks. I'm guessing the lights were drawing too much power at higher rpms. Now with the battery the bike runs great and the lights stay on the whole time. All I need now is a horn, and a mirror and I can try to get it registered.

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The battery holder made from scraps and mounted using existing brackets

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The voltage regulator mounted up right next to the battery

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Clamped the tail light to the back of the frame. Works great, lost my ability to pickup the bike from there though, not too happy about that. I also don't know if this is going to fly on an inspection, it's mounted a little far forward.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Mon Jul 31, 2017 10:02 am 
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Posts: 7589
Location: MA
This is more awesome than I can even believe. Did any of these come with batteries?

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Mon Jul 31, 2017 8:11 pm 
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Location: wv
This is going from a pit bike to a supermoto!!

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Jonathan

89 mighty max -4g swap in progress
04 F150 daily driver / gas hog :-/


Mon Dec 31, 2012 8:47 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Tue Aug 01, 2017 9:26 pm 
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Location: Savannah GA
There is electric start versions that come with batteries already on them, but I believe they're 6 volt.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Wed Aug 02, 2017 2:33 am 
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Posts: 3599
Location: Central NY
The Honda is going to get jealous of this thing, haha.

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Walt
04 RX-8 Touring Rebuild!
91 3000GT VR4
01 Tibb
Some people never have anything except ideas. Go do it.
Emissions & fuel economy haven't exactly been areas of strength for past rotary power plants, but absolutely no one with a soul has ever cared.


Wed Jun 24, 2009 12:21 am
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Wed Aug 02, 2017 12:13 pm 
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Location: Savannah GA
Nah Hahahaha. The Honda got new tires yesterday. I bet I'll get a knee down on the pitbike before I do it on the Honda though hahaha

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Wed Aug 09, 2017 9:57 pm 
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Location: Savannah GA
Got a new throttle in the mail a couple days ago. The length of pull on the stock throttle was so long, to go full throttle from a normal riding position I'd have to either adjust my hand on the grip half way through, or hang off the right side of the bike with my elbow pointed straight down hahaha. The crazy length made the bars shake when shifting at higher speeds. The new throttle is 1/4 turn and almost as short as the cbr throttle.

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I went to Walmart to look for a clamp on bicycle mirror but the only thing they had straped onto the left grip. I did find a handlebar clamp phone mount though. Works better than zip ties when I use my phone as a speedo.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Thu Aug 10, 2017 12:02 pm 
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Posts: 7589
Location: MA
I can't believe how much I want one of these now. You are gonna make me spend money.

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Thu Aug 10, 2017 2:43 pm 
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Posts: 1630
Location: Savannah GA
Do it Jeremy! It's hard to believe how much fun it is even though it'll only do 50mph. I will say though, the factory suspension is not made for a full grown person. I weigh 150lbs right now and to really make this thing handle well, it needs suspension upgrades.

Luckily though, pretty much everything aftermarket parts wise is very cheap compared to a full size bike.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Sun Sep 10, 2017 3:14 pm 
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Posts: 1630
Location: Savannah GA
Just a little update on this. I had a motor mount bolt snap a few weeks ago, and just a few days ago the swingarm pivot bolt snapped, and the rear shock came apart. So what I'm going to do now is go crazy on it. I've already ordered a new rear shock (fully adjustable and suitable for adult weight) and chain. Plastics and a front fork upgrade will come soon, also fully adjustable and inverted. Then new tires and a couple engine performance mods plus some dress up crap. The bike will be black and orange for the most part. Not sure if I'll build it piece by piece or wait until I have everything and then put it together, we'll see how it works out. The Honda is also down at the moment and needs about $400 worth of parts thrown at it.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Sun Sep 10, 2017 10:46 pm 
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Posts: 7589
Location: MA
Whoa. Total bummer! At least the parts for these things are cheap... right?

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Tue Sep 12, 2017 6:48 pm 
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Posts: 1630
Location: Savannah GA
For the most part. The range goes from dirt cheap China stuff, to high end parts. I'm gonna try to stay about the mid range on stuff. Even the more expensive suspension parts are still about half the price of a good set of ohlins for the cbr so it's not too bad.

I paid $150 for the rear shock that I bought. It has an external reservoir, adjustable compression, damping, and pre-load.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Wed Sep 13, 2017 11:05 pm 
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Posts: 7589
Location: MA
I'm probably gonna buy a new top end for my dune buggy. How do I tell the crappy stuff from the good other than price? Any idea?

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Thu Sep 14, 2017 5:09 pm 
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Posts: 1630
Location: Savannah GA
Honestly I couldn't tell you. It seems that even the higher end stuff (price wise) for the pit bike is still made in China. What engine is it in your dune buggy? Almost all the pit bikes have engines based off the horizontal Honda 50cc. T-boltusa.com is a good place to start looking for engine parts if it's the same as my pit bike. Some of their parts look really nice, but it also gets expensive fast! You can buy a Honda 50 based 190cc. I couldn't imagine how fast my pit bike would be with that in it, but not fast enough to make the $1200 price tag worth it.

My shock came today. It looks to be good quality. We will see. The reviews on the brand are mixed with lots of people reporting blown seals within a year.

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Ethan
1993 toyota pickup (crushed by oak)
2005 Honda cbr f4i
1999 Jeep Grand Cherokee limited


Sun Sep 19, 2010 3:32 pm
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 Post subject: Re: 2016 125cc pit bike
PostPosted: Fri Sep 15, 2017 10:31 am 
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Posts: 7589
Location: MA
I am like 90% sure my engine is known as a Gy6 150cc. I can buy complete top end rebuilds with the cylinder, the head, piston and gaskets for like $75. It sounds too good to be true, but if it stops my engine from burning so much oil, it's totally worth it.

Also - 190cc in that bike is damn near irresponsible! lol I once crashed a 50cc honda and I swear I broke every rib in my body even though I didn't go to the doctor. I hurt for like 6+ months, and sneezing nearly caused me to cry. I can't even begin to imagine how hard I would crash with 190cc's! (I also crashed in front of a bunch of good looking ladies, which hurt my ego as much as my ribs).

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Jeremy N.
1964 Impala Convertible
1972 Pontiac Lemans
2016 Subaru Impreza


Sat Mar 18, 2006 7:40 am
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