GSKA Forum

cnewman92 :: RE: Yamaha Engine Preferences?

Forum: 2 Cycle
Posted: Wed May 22, 2013 12:00 pm (GMT -5)
Topic Replies: 5

Xander,
Skyler's Yamaha is on Chris's TonyKart. I don't think they have any Yamaha's left.

We started out with it this year, and it had a Man Cup race weekend already on it. We've run 5 local races, a Man Cup weekend, and will run it in the night race. We'll send it back to Comet after that. All that's been done to it is one carb diaphragm change and keeping the clutch bushing lubed.
We were under the impression that it would take a lot more work than it has, but so far it's been pretty reliable. A new Comet will cost you $1850, plus clutch, can, mount, and air box. Simon's Sportsman motor would probably need some work for Jr. ( I think there are some carb differences, and maybe some other things), but it's a good deal, and ready to go. One thing I've noticed is that there are some engines out there that are less expensive, but I would look around and see who's motors are running without problems. I've never seen Dicky's (CKI), John's (Adkins), or Chris's (Comet) give them any trouble. I'm sure there are others as well, but thats just my observation, and I'm not sure what everyone else is running.

As far as tires go, it is a little harder on them than the 4-cycle. For local races, we've been using take-offs from Man Cup, with one set of new one's at the second GSKA race. We've worn out what we have, and will probably have to use a new set at the night race.

If you plan to do any Man Cup, you'll need two new sets a weekend. Practice on old ones your first time, and qualify on new ones. This weekends race tires are your practice tires the next time. The guys who are running at the front might use as many as four sets a weekend, practicing on one or two new sets on Friday. As good as the YLC's are, they fall off a couple of tenths pretty quick, and then stabilize. Can't afford that at the National level.

Hope this was helpful...
CN

bspek :: RE: Yamaha Engine Preferences?

Forum: 2 Cycle
Posted: Wed May 22, 2013 11:38 am (GMT -5)
Topic Replies: 5

when it is hot in summer we can be faster on used tires vs new... so it is pretty cheap b/c you can run 1 new set per year. Also for club level I would recommend get any blueprinted engine and just keep it fresh, we rebuild them around 10 hrs. Rick Sweeting is local and inexpensive for engine work. www.atlantakarting.com

Daniel White wrote:

For national races you will probably want to use new tires, but for club level stuff I'd opine that you may use two sets for an entire season.

I bought my kart in September with a set of used tires on them. Since then I've been to the track 6 times and have used the same tires. At this moment, Dickie Wilson has the best time in spec Yamaha Pipe, but I'm within a few hundredths of that time and my tires had more than 5 race days on them, when I ran 24.18. I've outqualified karts that have new tires--and I'm not even considered a front-running karter. The Bridgestone YLCs have great durability and consistency IMO.

For the first time in 5 years of karting, I'm putting on a new set of tires (for the upcoming night race) and I expect I will use them for the rest of the season.

There are several excellent engine builders available. I use Kyle Adkins. He gave my motor a full rebuild (I had major problems), and dyno'd, for about $800. I'm guessing I should get 10 hours (of club-level racing) before I will need a new piston and ring. If you have a Mychron gauge you can keep up with your engine "mileage." I've raced 4 times this season and have less than 2 hours on the motor.

I agree with Mike and Darrin--buy from Skylar or Jeff.

Daniel White :: RE: Adaptive Kart Racing officially launched

Forum: Discussion
Posted: Wed May 22, 2013 11:31 am (GMT -5)
Topic Replies: 1

Jeff, you have done an outstanding job with Brandon. I hope this venture is a great success.
_________________
Tonykart EVRR / Adkins Yamaha

Daniel White :: RE: Yamaha Engine Preferences?

Forum: 2 Cycle
Posted: Wed May 22, 2013 11:27 am (GMT -5)
Topic Replies: 5

For national races you will probably want to use new tires, but for club level stuff I'd opine that you may use two sets for an entire season.

I bought my kart in September with a set of used tires on them. Since then I've been to the track 6 times and have used the same tires. At this moment, Dickie Wilson has the best time in spec Yamaha Pipe, but I'm within a few hundredths of that time and my tires had more than 5 race days on them, when I ran 24.18. I've outqualified karts that have new tires--and I'm not even considered a front-running karter. The Bridgestone YLCs have great durability and consistency IMO.

For the first time in 5 years of karting, I'm putting on a new set of tires (for the upcoming night race) and I expect I will use them for the rest of the season.

There are several excellent engine builders available. I use Kyle Adkins. He gave my motor a full rebuild (I had major problems), and dyno'd, for about $800. I'm guessing I should get 10 hours (of club-level racing) before I will need a new piston and ring. If you have a Mychron gauge you can keep up with your engine "mileage." I've raced 4 times this season and have less than 2 hours on the motor.

I agree with Mike and Darrin--buy from Skylar or Jeff.
_________________
Tonykart EVRR / Adkins Yamaha

jeff bacon :: Adaptive Kart Racing officially launched

Forum: Discussion
Subject: Adaptive Kart Racing officially launched
Posted: Wed May 22, 2013 10:39 am (GMT -5)
Topic Replies: 1

After a long development period, I have finally decided that my hand control project is ready for prime time. We had our official launch at the Richard Petty King's Cup at Victory Lane indoor kart track at Charlotte NC yesterday. The Kings Cup is a benefit for the Paralyzed Veterans of America, so this was a fitting venue. Me and Brandon were even interviewed for NASCAR radio on Sirius/XM. Here is the new web site:
http://www.adaptivekartracing.org/
_________________
Jeff Bacon
2013 President GSKA
770.315.2750
jeffbacon@comcast.net
www.jeffsgarageandspeedshop.com
www.gakartsales.com

Mike Pugh :: RE: Yamaha Engine Preferences?

Forum: 2 Cycle
Posted: Wed May 22, 2013 10:20 am (GMT -5)
Topic Replies: 5

Jeff Sikes has a Comet Yamaha for sale in the classifieds.
http://www.georgiasprintkarting.net/forum/ads_item.php?id=599
_________________
Rippin Racing
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Darrin Tebbe :: RE: Yamaha Engine Preferences?

Forum: 2 Cycle
Posted: Wed May 22, 2013 10:00 am (GMT -5)
Topic Replies: 5

I would PM Skylar59 and see if they still have any Yamaha Jr engines left. I'm pretty sure they had engines done by Comet and they were very competitive in Man Cup with them.

Needless to say I'm very happy with the performance of our CMC Yamaha, and Don is always just a phone call away. http://www.cmckarts.com

In pretty much any national series you are going to put new tires on for raceday. I would say for local races it really just depends on the quality of the competition, and what they are doing with tires. I don't see any reason you couldn't get 2 or 3 local races out of a set of tires, unless the person you want to beat is putting new tires on at every race... but that's the case with any class you run.

DT
_________________
Darrin Tebbe

Xracing36 :: Yamaha Engine Preferences?

Forum: 2 Cycle
Subject: Yamaha Engine Preferences?
Posted: Wed May 22, 2013 8:30 am (GMT -5)
Topic Replies: 5

So I am on the verge of moving up to Yamaha Junior, and depending on weight for next year, Yamaha Senior in 2014. However, I have a couple of questions for you guys who run Yamaha already about the engine such as upkeep and pricing.

First of all, who is your engine builder/tuner? Initially, of course, I would be buying a Yamaha Can for the Junior division, so what would be the pricing of said engine builder on a brand new one?

Second, after how many races do you take your engine in to the shop and have them do a tuneup to it? We ran our clone through about ten or so racedays plus two testing weekends and it didn't need a whole lot.

Finally, after how many race weekends do you change tires? I've heard from friends who run up north in Yamaha Junior that for a Man Cup weekend they'll have their practice set and a brand new set of tires for the racing alone.

Any feedback is appreciated,
Xander
_________________
Xander Clements, Driver of the #36 Razor Chassis Kart in Clone Junior 2
Age: 14
Hometown: Woodstock, GA

Dev Gore :: RE: Night Race

Forum: 2 Cycle
Posted: Mon May 20, 2013 10:48 pm (GMT -5)
Topic Replies: 37

I did not warm up my motor correctly so the piston got too hot and because all else was cold the piston expanded and got caught which caused the piston rod to bend and break....warm up your motors before you race in the cold, lesson learned.

jfoust :: RE: Dismounting and Mounting Tires

Forum: FAQ
Posted: Mon May 20, 2013 4:21 pm (GMT -5)
Topic Replies: 1

I used this video as a reference the first time I changed a set of tires.. Helped immensely!

John Wehrheim :: Dismounting and Mounting Tires

Forum: FAQ
Subject: Dismounting and Mounting Tires
Posted: Mon May 20, 2013 4:11 pm (GMT -5)
Topic Replies: 1

for those that struggle with Dismounting and Mounting Tires, this is a great video I found on YouTube.
http://www.youtube.com/watch?v=fGgdy3fRCbM
_________________
John
Board of Directors
Sr. 2 Cycle Director

Austin18 :: RE: Honda cr125

Forum: 2 Cycle
Posted: Mon May 20, 2013 3:11 am (GMT -5)
Topic Replies: 4

Hey big daddy ricks. I thought about you. But i didnt guess u helped him on the carb last time. If you look on the website i posted the guy has alot of tech info on carb tuning and all. He does some top notch work. Watch some of his youtube stuff its impressive something to talk about. Anyways, dont tell Ruben too much.. he might just come out and whoop ya next race.
Best of luck to ya Clarence

clarence :: RE: Honda cr125

Forum: 2 Cycle
Posted: Sun May 19, 2013 7:58 am (GMT -5)
Topic Replies: 4

Ruben, call me. 6788156o87
_________________
Mr. Sideways

Daniel White :: RE: Night Race

Forum: 2 Cycle
Posted: Sun May 19, 2013 7:34 am (GMT -5)
Topic Replies: 37

8 TAG guys registered for the night race!
_________________
Tonykart EVRR / Adkins Yamaha

Daniel White :: RE: Night Race

Forum: 2 Cycle
Posted: Sun May 19, 2013 7:31 am (GMT -5)
Topic Replies: 37

Great to hear Dev.

Were you able to sort out the engine issue that put you out at your most recent race?
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Tonykart EVRR / Adkins Yamaha