Recommended chassis to start rotax max masters

[Tadas Ratkevicius]

Im looking to buy rotax engine and chassis. What I should look tony kart? racer or krypton?  Kosmic?

Or I should start Senior Tag? What chassis?

Thanks

[Brad Nyman]

look for a chassis with support in your area. it make it easier to be able to run at the track knowing someone will have the parts to keep you running. As far as construction, i would look for a chassis that has a proven history working at masters weights. I would stay away from anything small diameter unless it has a proven history, especially if your just starting out. Small diameter(28mm, 30mm) will work, but it may take more work to get it working properly which if your new, may take more time then you have to figure it all out. I’d say that a 32mm would be what your looking for if your going to be running club races and just getting started just because it is a little easier to use with the heavier weights.

In terms of what class, again start with whats supported in your area. Don’t force yourself into a class of 1 if you can avoid it. If there is a Rotax masters class with decent entries and you would fit into it, then go ahead and run that. but if there is not one offered, then go ahead and find a weel supported class that way you can ask others for advice and information.

Force.One motorsports
Gear up F-series racer

[Tadas Ratkevicius]

Top kart dealer is 10 min from my house, but I heard they don’t fit to rotax, because need more grip on mono’s. So there is no really perfect set up topkart-rotax. I couldn’t find approved chassis on rotax website. there is no top kart brand on the list at all. So maybe I should go with tags, but it looks like its dying.

I did not bad in millville just trying with topkart rental piece of junk, I did 1.17 first time, second 1.16-15 and kart broke. But that was just first 2 practice.

Thanks

[Walt Gifford]

A kart is a kart, it’s just a steel tubular frame with 4 rubber tires. To say one is better than another is basically a popularity contest with todays manufacturing techniques. Here check this out: http://www.kartwarehouseusa.com/product-p/wf3250.htm

Gif

FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience

[Jay Sinon]

I disagree with a kart is a kart. I agree that practically everyone is using the same basic frame design made mostly with the same Italian steel, but there is much more to a kart then the frame. Personally I love the Tony karts braking system there were many manufactures that didn’t even use a automotive style master cylinder so you would have to constantly adjust or shim the brakes every race day. I see that Top Kart this year finally came out with what appears to be a decent brake system that will adjust on its own. One other thing that makes them different is the camber/caster adjustments some karts as the Tony karts come stock with a lot more adjustment then some other karts, then again the Margay seems to have the easiest and best camber/caster I’ve ever seen to set up and change.

Just IMO of course I don’t run TAG so I wouldn’t know which frame size to run.  I run Yamaha on a Kosmic Mercury. I have seen guys who run TAG on both the 30mm mercury frame as well as the 32mm Lynx frame The guys on the 30mm frame say that they twist and handle better and the guys using the 32mm frames say they would just wear out a 3omm frame to fast.

TaG Sr.

[Walt Gifford]

I think you just proved my point.

People will defend whatever chassis they spend a ton of money on.

FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience

[Larry Hayashigawa]

I ran Rotax Masters in So Cal for 7 or 8 years until this year. I’ve run CRG Road Rebel 32 mm and BlackStar 30 mm/32 mm, Energy 30 mm/32 mm and the TonyKart (OTK) EV-series 30 mm. I ran CRG for 2 years, ran Tony for 2 years, then ran the Energy for a year and then went back to Tony 3 more years.

What makes the Rotax series somewhat unique is the relatively low grip Mojo tires. If you run Masters and have to add lots of weight the situation gets even more exaggerated as many of the other kart brands have a difficult time generating enough side bite to effectively lift the inside rear tire. The more flexible chassis allow the IR to lift easier resulting in better roll through the turns with less sliding but….

Admittedly, I’ve never run the more recent all 30 mm chassis brand (Birel and ??) and that might be the critical requirement.

[Curtis Cooksey]

They are all good chassis, but you can’t beat the bang for the buck of the RR Extreme chassis. http://www.accelerationkarting.com/extremeindykartchassis.aspx

If you have the money get the 30mm Tony Racer. http://www.accelerationkarting.com/tonykartracer401.aspx

You will be happy with either one!

[Walt Gifford]

Tadas, who told you Topkart can’t get grip the boys at Millville LOL they are CRG dealers. Take another look at the TopKart “Twister” and give Jimmy a call he’ll shoot you straight. 215-244-1940

Gif

FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience

[Tadas Ratkevicius]

Thats what actually Jim said. Thats why topkart made “twister-e” model for rotax, but Jim said they last 8 races, to flexible. Im just interesting why I never saw topkart chassis in any rotax league. Actually on rotax website therese is no brand marked as approved chassis list. I may go to tag masters, will see. Thanks!

[Gary Lawson]

Otk karts win nearly every big rotax event in the usa every year for a reason. It’s not s secret that every manufacturer has been chasing them. You could argue a few have caught up, but with seemingly 80% of drivers on otk karts at rotax grands every year, it’s pretty obvious what your choice should be. And top kart would not be on my short list.

[Jay Sinon]

Walt.

What point did I prove ? I thought I proved that  karts aren’t the same that there are big differences between them all. There are big differences in the same kart manufacture just from year to year and model to model. Take Top Kart if you buy a 2014 or earlier you get a brake system that uses screws and springs to return the pistons back inside the caliper and when your brakes start to wear you need to put shims in behind the pads because the pistons only have so much movement. That’s a lot of work just to have brakes! Now in 2015 they changed brake systems and now they use a self adjusting brake system similar to a car. The master cylinder holds enough fluid in it to keep pushing out the pistons until the brakes wear out just like a automotive system. Then we could talk about floating rotors over fixed rotors, 30mm frames over 32mm frames. There are so many differences between models and years not to mention the differences between manufacture’s.

So my point was when you said  ”A kart is a kart, it’s just a steel tubular frame with 4 rubber tires.” I don’t think that is true. Do I love my Tony/Kosmic frame Absolutely! Do I think that there are a lot of good kart manufactures out there Yes. Do I think there is a lot of differences out there Absolutely! and that was my point.

Tadas,

Good luck on what ever you pick. In the end its not what frame you pick but how much fun your having on it!

TaG Sr.

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