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521 super serval Duner help


LEGO

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Hey guys. 

Im new to the forum so bear with me plz. I am n the middle of rebuilding my Banshee from a stock stroke and cylinder to a ported 521cc super serval with a 10mil stroke. Initially I wanted to do a 443cc 7 mil stroke serval/assassins but we already have one of those in the family, so I'm looking for something different. The bike will be used strictly for dunes riding and the occasional drag race. Would the 521 have a massive advantage over a 443 or do you guys think it would be overkill. Bike has all the supporting mods necessary, but I am torn between a +2 or +4 swing arm. I am an aggressive rider, and I like having a good agile bike underneath me that can turn quickly and that I can throw around. Im afraid that the +4 will take away all the fun for me. I know some will say I need the +4 to keep the nose down, but I don't mind that at all, I can handle a beast that wants to wheelie all the time. if there is any other information you guys need lemme know. I posted this in the Sand forum but things are quiet over there. 

PS: I am not in the US but rather in Namibia, in Africa. Our riding spot is the Namib dessert. We do not have access to builders from the US, only parts, so we use local guys or guys from South Africa to build our builds. The builders in South Africa are know as Sidz Motorcycle Racing. They build some sick banshees.

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Lol, I'm running a super cub on a +8, and can't keep the front end down in 3rd but I'm only 165lbs or so.  My older brother is a also running a super cub, and is 240lbs or so, and is running a +10 and he can keep it down for the most part.  If you can get decent traction, a +2 or +4 will be interesting for sure...

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Thanks for the recommendations guys. I think it might be possible to play a bit with the rear suspension setup via sagging in order to encourage or discourage the front from coming up. Have any of you tried this before? These are just recommendations Ive been getting from MX riders here on my side.

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9 hours ago, LEGO said:

Thanks for the recommendations guys. I think it might be possible to play a bit with the rear suspension setup via sagging in order to encourage or discourage the front from coming up. Have any of you tried this before? These are just recommendations Ive been getting from MX riders here on my side.

Yes, I've played with the rear suspension, gearing and tires.  Biggest help was going from a 12 paddle to a 9 paddle, and taking some gear out of it.    If you can put 120+rwhp down to the ground (with minimal tire spin) the front end will lift with shorter swing arms.

Edited by pp13bnos
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15 hours ago, pp13bnos said:

Yes, I've played with the rear suspension, gearing and tires.  Biggest help was going from a 12 paddle to a 9 paddle, and taking some gear out of it.    If you can put 120+rwhp down to the ground (with minimal tire spin) the front end will lift with shorter swing arms.

Thanks for the help   

The only sand tires we are able to secure here on our side are the cyclones or the kenda Geckos. The geckos I know are below average. Ive tried the cyclones before on a raptor 700, and they definitely have more bite than the geckos. The only way to get my hand on some proper paddles were if I were to make them myself. Safe to say the cyclones will suit my riding style to be honest. This wont be an all out drag bike, handling and rideability are the main keys here, and then ofcourse, power. HAHA. 

What about suspension. Im gonna be running an elka legacy rear shock. Any recommendations on setup? 

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  • 3 months later...

Definitely go with the 521. I assume you’ll be in some of the sand? Those dunes are massive. The 521 Serval will have gobs of torque. My buddy has a 521 serval on a stock length swing arm. I had my 535 cheetah on a -2 swing arm. Are you only planning on being in the sand out there or running some of that red hard pack in the trails?

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