wired2008 Posted July 16, 2014 Report Share Posted July 16, 2014 Ok guys, I need your help. I bought a 421 10mm Serval motor custom Kit ( shoud make 100HP I hope ) from Redline to be used in Pinamar Dunes in Argentina. After reading some post and a quick call to the manufacturer , I am thinking that for the rear tires I should be buying a couple of Skat-Trak 22x11x8 RO 74+ 12 Paddles Extreme on DWT Black Level to be used as 70% Drags and 30% Dune riding. My weigh is 210 pounds and the Sand where we drag depending on the day is dry to a little humid. Based on your experience What should be the ideal Size, paddle, RO, etc ? Thanks. Sergio. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 What length swingarm? Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 I have a +4" Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 I have a +4"Is it a 421 or a 10mm? Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 This is what Cameron sent me : RAW 10mm serval cylinder ported. Custom cut 23-24cc domes 10mm crank with TZ bearing and max load bearing , trued and welded Pump gas domes 68mm 10mm (custom) Full drag port on cylinder and nikasil Perfect banshee tranny core complete Duneable tranny 1-5 ND V-Force reeds V4 Keihn carbs 39mm jetted 39mm intake boots UPP SCP inframe small bore drag show chrome +4" swing arm Lonestar Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 I ran 22x11x8 12paddle extremes. On both and liked them they were staggered though. They were also ultra lights. I think a +4 is going to be awful short with 100hp in the sand btw. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 This is what Cameron sent me : RAW 10mm serval cylinder ported. Custom cut 23-24cc domes 10mm crank with TZ bearing and max load bearing , trued and welded Pump gas domes 68mm 10mm (custom) Full drag port on cylinder and nikasil Perfect banshee tranny core complete Duneable tranny 1-5 ND V-Force reeds V4 Keihn carbs 39mm jetted 39mm intake boots UPP SCP inframe small bore drag show chrome +4" swing arm Lonestar Ok. It's a 465 then. Nice motor. 1 Quote Link to comment Share on other sites More sharing options...
dozer Posted July 16, 2014 Report Share Posted July 16, 2014 210 lbs, +4 arm, 12 paddles and 100+hp will be entertaining to watch. 1 Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 The 90 to 100 HP are just an estimate Power as the motor will be built and dyno as soon as the parts arrive this month. I decided to test the +4 to be able to ride dunes and drag as there is only 2 or 3 people I know that have longer swing arms here. After a season of experience with the +4, I will not doubt to upgrade for a longer swingarm if a +6 or a +8 allow me to ride the same way and Drag. What RO do you have ? Does it make any noticeable difference ? Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 210 lbs, +4 arm, 12 paddles and 100+hp will be entertaining to watch.Yes. And not from the drivers seat. Haha. I'd do a +8 minimum if I were drag racing seriously. Of course it won't dune as good though. It's all about compromises. ..do you want to win drag races more or dune more? Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 The 90 to 100 HP are just an estimate Power as the motor will be built and dyno as soon as the parts arrive this month. I decided to test the +4 to be able to ride dunes and drag as there is only 2 or 3 people I know that have longer swing arms here. After a season of experience with the +4, I will not doubt to upgrade for a longer swingarm if a +6 or a +8 allow me to ride the same way and Drag. What RO do you have ? Does it make any noticeable difference ? The tires you mentioned sound very similar to what I ran..except mine are staggered paddles. I like them. Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 Yes , I want to win drag races but Drags are not as competitive as i the US. Our race are mixed Yamahas 450 , cubs, +4 mm and +4 is the longest swinarm except for a few guys (2 or 3). My project was to build the a +10mm from a known builder ( not sure but may be the first here ) and try to keep it hybrid with some advantages in power. Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted July 16, 2014 Report Share Posted July 16, 2014 Yes , I want to win drag races but Drags are not as competitive as i the US. Our race are mixed Yamahas 450 , cubs, +4 mm and +4 is the longest swinarm except for a few guys (2 or 3). My project was to build the a +10mm from a known builder ( not sure but may be the first here ) and try to keep it hybrid with some advantages in power. Sounds like you should do good. I will also say a properly set up 4mm could take you, if his setup is right (he can launch hard and not wheelie) and your setup is off ( you can't launch hard without a bad wheelie). Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 Do you feel any vibration due to the staggered Paddles ? I read some post but I could not decide if that was ok for the kind of use I will give to these tires. Quote Link to comment Share on other sites More sharing options...
wired2008 Posted July 16, 2014 Author Report Share Posted July 16, 2014 Sounds like you should do good. I will also say a properly set up 4mm could take you, if his setup is right (he can launch hard and not wheelie) and your setup is off ( you can't launch hard without a bad wheelie). Do you mean a 4mm with a longer swingarm , the proper gear ratio and a stellar chassis or modified chassis ? Quote Link to comment Share on other sites More sharing options...
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