Could you also state your carb jetting and elevation? Just as a suggestion for those who purchase the product. Im sure you probably put it in some sort of directions for people when you sell them the product. If thats the case, never mind then. Awesome research! Im following the build on the forums too. Keep it up.
Thanks man! Yeah the kit comes with the right Jets. For most applications it is a 50 pilot and a 115 main with the needle in the middle (stock) position. The CV carb is great for differences in altitude - it is pretty forgiving there. Usually only need to play around with the air/fuel screw which can be anywhere from 1.5 to 3.5 turns out depending on location ;)
Hi Jadus, I would like to know about the transmission kit in our Yamahas. I've got the SR Special from 1995 and it comes with 14 and 40 teeths, but the SR comes with 16 and 46 instead (a lot more). The Special has a smaller rear wheel (16" instead of 18"). Do you have the original relation in your SR Special or will it perform better with another?
We always run a 17 on the front and depending on what the use is, a 46, 40 or even a 36 on the back (the 36 is custom made). Don't forget that a 16'' wheel can have the same circumference as an 18'' wheel - all depending on the tyre. We use this site to check that: www.tacomaworld.com/tirecalc?tires=140-90r16-110-90r18
@Estebita Latorre gracias por tu informacion me ha sido muy util ahora ya se de donde bienenlas explosiones que efectua mi moto, gracias por tu ayuda y un saludo
Hey man! Nope, 20hp stock is a pipe dream. That is what Yamaha claimed - if you look at any period tests where they dynoed the bike, you'll find the same info, the stock SR250 249cc models make about 15hp at the rear wheel and about 18hp at the crank and the 239cc models make even less - down to 13.5hp at the wheel and 16hp at the crank.
There are both crank horse power and wheel horse power measurements - there is more information on this page here: www.jadusmotorcycleparts.com/performance-parts
The 100mph bike is a completely different animal! Many internal engine mods etc. If you have time and want to know more, you can read about it here: www.dotheton.com/forum/index.php?topic=74386.0
@@JadusMotorcycleParts thats something i'm gonna read! Thanks! Do the graphs on your site show the wheel horses? That would be quite impressive for our little two valve head:)
@@J2I3H Hey man, the graphs show power at the crank. Unfortunately, that fact that everyone believes the Yamaha figure of 20hp is a shame. The most important thing with Dyno testing is the before and after - what difference/increase in performance did the parts have over stock - in this case, a 20% increase. This has been backed up by several individual customer tests as well.
Could you also state your carb jetting and elevation? Just as a suggestion for those who purchase the product. Im sure you probably put it in some sort of directions for people when you sell them the product. If thats the case, never mind then. Awesome research! Im following the build on the forums too. Keep it up.
Thanks man! Yeah the kit comes with the right Jets. For most applications it is a 50 pilot and a 115 main with the needle in the middle (stock) position. The CV carb is great for differences in altitude - it is pretty forgiving there. Usually only need to play around with the air/fuel screw which can be anywhere from 1.5 to 3.5 turns out depending on location ;)
Hi Jadus, I would like to know about the transmission kit in our Yamahas. I've got the SR Special from 1995 and it comes with 14 and 40 teeths, but the SR comes with 16 and 46 instead (a lot more). The Special has a smaller rear wheel (16" instead of 18"). Do you have the original relation in your SR Special or will it perform better with another?
We always run a 17 on the front and depending on what the use is, a 46, 40 or even a 36 on the back (the 36 is custom made). Don't forget that a 16'' wheel can have the same circumference as an 18'' wheel - all depending on the tyre. We use this site to check that: www.tacomaworld.com/tirecalc?tires=140-90r16-110-90r18
Hola a que son debidas las explosiones al quitar el gas, gracias y un saludo
?
@Estebita Latorre gracias por tu informacion me ha sido muy util ahora ya se de donde bienenlas explosiones que efectua mi moto, gracias por tu ayuda y un saludo
Just saw a video for Mutt motorcycles, gorgeous bikes, will save you all the welding and tuning for a great price
If you would buy a Mutt over an old Yamaha, you miss the entire point.
doesn'te the SR comes with 20 hp stock? why those numbers of 15hp?
Hey man! Nope, 20hp stock is a pipe dream. That is what Yamaha claimed - if you look at any period tests where they dynoed the bike, you'll find the same info, the stock SR250 249cc models make about 15hp at the rear wheel and about 18hp at the crank and the 239cc models make even less - down to 13.5hp at the wheel and 16hp at the crank.
@@JadusMotorcycleParts I guess a GN makes more sense. since there is a 300cc big bore kit available...
Is it wheel horsepower? How is the 100 mph sr set up?😎
There are both crank horse power and wheel horse power measurements - there is more information on this page here: www.jadusmotorcycleparts.com/performance-parts
The 100mph bike is a completely different animal! Many internal engine mods etc. If you have time and want to know more, you can read about it here: www.dotheton.com/forum/index.php?topic=74386.0
@@JadusMotorcycleParts thats something i'm gonna read! Thanks! Do the graphs on your site show the wheel horses? That would be quite impressive for our little two valve head:)
@@J2I3H Hey man, the graphs show power at the crank. Unfortunately, that fact that everyone believes the Yamaha figure of 20hp is a shame. The most important thing with Dyno testing is the before and after - what difference/increase in performance did the parts have over stock - in this case, a 20% increase. This has been backed up by several individual customer tests as well.