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NASRA
Oct 15, 2009 11:36:31 GMT -5
Post by Enviromoto on Oct 15, 2009 11:36:31 GMT -5
NASRA is the North American Scooter Racing Association. This organization was created to promote scooter racing in the US. In time we hope to have a scooter event in all 50 states. Please join the forum and help us build this organization from the ground up. You know what they say the early bird gets the worm so lets get this party started! www.Scooter-Racing.net |
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NASRA
Nov 12, 2009 17:22:55 GMT -5
Post by Enviromoto on Nov 12, 2009 17:22:55 GMT -5
Thoughts on the new drag race classes?
Class 1
4 Stroke 50cc - 99cc Scooter
1a: 50cc Pro
Displacement must not be larger than 50cc, no power adders.
1b: 72cc - 85cc Pro
Displacement must not be larger than 85cc, no power adders.
1c: 85cc - 99cc Unlimited
Displacement must not be larger than 99cc, power adders are ok.
Class 2
4 Stroke 100cc - 235cc Scooter
2a: 100-125cc Pro
Displacement must not be larger than 125cc, no power adders.
2b: 150-170cc Pro
Displacement must not be larger than 170cc, no power adders.
2c: 180-235cc Unlimited
Displacement must not be greater than 235cc, power adders ok.
Class 3
2 Stroke 50cc-125cc Scooter
3a: 50cc Pro
Displacement must not be larger than 50cc, no power adders.
3b: 72cc Pro
Displacement must not be larger than 72cc, no power adders.
3c: 72cc-99cc Unlimited
Displacement must not be larger than 99cc, power adders ok.
3d: 99cc-125cc Unlimited
Displacement must not be larger than 125cc, power adders ok.
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NASRA
Nov 12, 2009 18:46:43 GMT -5
Post by 2strokd on Nov 12, 2009 18:46:43 GMT -5
Its a little different with the 2T,s. I could have a 70cc cylinder with no power adders and a 21mm carb that makes 8hp. Or a 70cc cylinder and a 21mm carb that makes over 15hp with no power adders. With the 2t,s displacement doesnt mean as much as it does with the fours. Its all in the cylinder porting and timing. Just saying you could have a sleeper 70 with a high end cylinder that flat smokes the guys that can only afford 70cc sport cylinders  . How can we work this out? Im willing to be a 2T inspection track official if we do get this sorted out. Who else would want such a job lol  ? |
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NASRA
Nov 12, 2009 22:13:59 GMT -5
Post by stepthrutuner on Nov 12, 2009 22:13:59 GMT -5
Thoughts on the new drag race classes? Class 1 4 Stroke 50cc - 99cc Scooter 1a: 50cc Pro Displacement must not be larger than 50cc, no power adders. 1b: 72cc - 85cc Pro Should be 50-75ccDisplacement must not be larger than 85cc, no power adders. 1c: 85cc - 99cc Unlimited Should be 75-99ccDisplacement must not be larger than 99cc, power adders are ok. Class 2 4 Stroke 100cc - 235cc Scooter Should be 100-215cc2a: 100-125cc Pro Should be 100-130ccDisplacement must not be larger than 125cc, no power adders. 2b: 150-170cc Pro Should be 130-170ccDisplacement must not be larger than 170cc, no power adders. 2c: 180-235cc Unlimited Should be170-215Displacement must not be greater than 235cc, power adders ok. Should be 215ccClass 3 2 Stroke 50cc-125cc Scooter Should be 50-130cc3a: 50cc Pro Displacement must not be larger than 50cc, no power adders. 3b: 72cc Pro Should be 75ccDisplacement must not be larger than 72cc, no power adders. 3c: 72cc-99cc Unlimited Should be 75-99ccDisplacement must not be larger than 99cc, power adders ok. 3d: 99cc-125cc Unlimited Should be 99-130ccDisplacement must not be larger than 125cc, power adders ok. Should be 130cc
I made allowances for "cleaning up" cylinders.
The reason I cut off the displacement limit at 215cc is that I know of no intermediate displacement scooter engines between 200 and 250cc. The 150 gy6 can be bored and stroked out to 187.04cc and a Piagggio Leader 200 can be fitted with a 210 bb kit. Otherwise you're getting into de-stroking a 250 and in that case 250cc might as well be the upper limit.
Now someone needs to tell me why I'm wrong. |
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NASRA
Nov 12, 2009 23:00:36 GMT -5
Post by Enviromoto on Nov 12, 2009 23:00:36 GMT -5
Its a little different with the 2T,s. I could have a 70cc cylinder with no power adders and a 21mm carb that makes 8hp. Or a 70cc cylinder and a 21mm carb that makes over 15hp with no power adders. With the 2t,s displacement doesnt mean as much as it does with the fours. Its all in the cylinder porting and timing. Just saying you could have a sleeper 70 with a high end cylinder that flat smokes the guys that can only afford 70cc sport cylinders . How can we work this out? Im willing to be a 2T inspection track official if we do get this sorted out. Who else would want such a job lol ? Its up to 72cc so you can run any combo you would like. |
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NASRA
Nov 12, 2009 23:10:39 GMT -5
Post by Enviromoto on Nov 12, 2009 23:10:39 GMT -5
Thoughts on the new drag race classes? Class 1 4 Stroke 50cc - 99cc Scooter 1a: 50cc Pro Displacement must not be larger than 50cc, no power adders. 1b: 72cc - 85cc Pro Should be 50-75ccDisplacement must not be larger than 85cc, no power adders. 1c: 85cc - 99cc Unlimited Should be 75-99ccDisplacement must not be larger than 99cc, power adders are ok. Class 2 4 Stroke 100cc - 235cc Scooter Should be 100-215cc2a: 100-125cc Pro Should be 100-130ccDisplacement must not be larger than 125cc, no power adders. 2b: 150-170cc Pro Should be 130-170ccDisplacement must not be larger than 170cc, no power adders. 2c: 180-235cc Unlimited Should be170-215Displacement must not be greater than 235cc, power adders ok. Should be 215ccClass 3 2 Stroke 50cc-125cc Scooter Should be 50-130cc3a: 50cc Pro Displacement must not be larger than 50cc, no power adders. 3b: 72cc Pro Should be 75ccDisplacement must not be larger than 72cc, no power adders. 3c: 72cc-99cc Unlimited Should be 75-99ccDisplacement must not be larger than 99cc, power adders ok. 3d: 99cc-125cc Unlimited Should be 99-130ccDisplacement must not be larger than 125cc, power adders ok. Should be 130cc
I made allowances for "cleaning up" cylinders.
The reason I cut off the displacement limit at 215cc is that I know of no intermediate displacement scooter engines between 200 and 250cc. The 150 gy6 can be bored and stroked out to 187.04cc and a Piagggio Leader 200 can be fitted with a 210 bb kit. Otherwise you're getting into de-stroking a 250 and in that case 250cc might as well be the upper limit.
Now someone needs to tell me why I'm wrong.Here is the motor that made me bump up the displacement. totalruckus.com/phpBB3/viewtopic.php?f=123&t=39303Also I see what your saying about a few of your suggestions. However 85cc is the max displacement that im aware of on the 4 stroke small displacement scooter. Ill make some modifications. |
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NASRA
Nov 13, 2009 21:24:19 GMT -5
Post by stepthrutuner on Nov 13, 2009 21:24:19 GMT -5
My bad, Jeremy, I think I had 2 strokes on my mind concerning that 50-85cc four stroke class. You're right. That would be a good displacement range for that class. Also I kind of expected there was a monster GY6 150-based motor that I was not aware of.
A killer motor could be made by welding up and regrinding most 250 cranks to alter the throw by only 1.25-1.50mm to get below that 235cc upper limit.... at least for a 244cc 4 valve Piaggio Leader engine anyway.
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NASRA
Feb 25, 2010 17:34:41 GMT -5
Post by Enviromoto on Feb 25, 2010 17:34:41 GMT -5
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NASRA
Feb 25, 2010 17:57:53 GMT -5
Post by 2strokd on Feb 25, 2010 17:57:53 GMT -5
I noticed that, great idea!
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NASRA
Feb 25, 2010 20:55:51 GMT -5
Post by stepthrutuner on Feb 25, 2010 20:55:51 GMT -5
Hmmm.... no restrictions on fuel.... |
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NASRA
Feb 25, 2010 21:05:43 GMT -5
Post by 90GTVert on Feb 25, 2010 21:05:43 GMT -5
There you go step, you can start building that nitromethane engine.
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NASRA
Feb 26, 2010 22:48:26 GMT -5
Post by stepthrutuner on Feb 26, 2010 22:48:26 GMT -5
Then I'd have to change my screen name to slagpooltuner.  |
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NASRA
Feb 26, 2010 23:07:10 GMT -5
Post by 90GTVert on Feb 26, 2010 23:07:10 GMT -5
Pretty much.  |
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NASRA
Mar 26, 2010 11:05:34 GMT -5
Post by Enviromoto on Mar 26, 2010 11:05:34 GMT -5
Some exciting updates to note. The Bill Monroe Campgrounds is the offical lodging of choice for the T&G. Contact Natalie and tell her your with us and she will get you fixed up. www.Beanblossom.com Friday at 5pm the Antisocial SC will be hosting a ride around lake Lemon. Starting from the Bill Monroe Campgrounds and stopping off at our favorite watering hole for dinner. The Kentuckiana SC has graciously decided to host the T&G afterparty at the campgrounds. Food, bands, shenanigans, and who knows what else they have in store for us on Saturday night. Hope to see you at the races! |
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NASRA
Mar 26, 2010 11:12:12 GMT -5
Post by 2strokd on Mar 26, 2010 11:12:12 GMT -5
Great news! ;D Thanks for the awsome update J  ! See ya there! |
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