Words of wisdom for sure..Most people dont realize how many different factors are involved with run times most importantly track size..Its just not fair for one B5 guy to come on here and say buy the B5 it gets 12 minutes run time..Thats just as false info as anything..One racers 10 minutes is anothers 7 minutes, and that is with the same exact set-ups, tracks, fuel, clutch and pipe..Most run time come directly from your finger, not your engine

Regarding track size, how would a motor know the difference whether it’s on its first lap or 3rd. How would that affect the fuel consumption? Unless you have all long straights?

Mainly its clutch setup and limiting the carb to open no more than it needs to. Weather, elevation, tuning, brake drag all plays important role. But putting all those factor aside I’m sure you can estimate whether a properly tuned engine can achieve a 10 min. run. Not to mention that people really don’t know if there fueling a complete 125cc tank.

I have to say now, with some regrets that the 2013 pipe is the way to go with the B5. I really thought the 2035 was a kick ass pipe until I tried my 2013 today. The 2013 has way more bottom and mid about the same up top. It also idles much better. So if anybody wants to try a 2035 Im gonna list it for sale here in a min. So check the for sales stuff.

Ive been tellin ya guys! 2013 has the most power out of anything on this engine!!!!!I love it!!!!!!!!!!!!:nod:

We have 6 tracks here in AZ. The smallest track is about 60X80, with 1 long straight and rest technical my Nova gets 14+ minutes run times there because I really am not on the throttle all that much mostly because the track is so small. The largest track is 125X200 and I am always on the throttle because the lanes are bigger and so are the straights before all the turns. My +4 gets 9-10 minutes run time there. Everyone else here gets the same differences in run times on the various tracks regardless of the layouts or the engines used

track size / layout mainly will have a great effect on runtimes.... i raced saturday and got 12min... and on sunday went to a different track... and could not make 10.... so depending on how much you on the throttle it will affect runtimes...

Jaz is right but I would say that it's a combination of a motors efficiency and RPM (or revolutions per minute). It really boils down to the basics a .21 ci engine will hold that amount of mixture (fuel and air, minus a little extra that gets blown out of the exhaust port due to scavenging) per revolution. So the less amount of times that an engine needs to turn over to get a vehicle around a track the less fuel it burns lol! Factors that commonly affect this are wheel spin (nothings a bigger waste than burning fuel and not going anywhere), track size (the larger the track the more revolutions it takes to get around it), gearing (taller gearing = less revolutions to move further) and driving style because if your grabbing full throttle and you only need half you are probably experiencing wheel spin lol. Either way though compared to motors from a couple of years ago we are now seeing run times (because of increased efficiency) that we could only dream of in the past!


hdcruzer, glad that you got a chance to run the 2013 and liked it! Now you see what we were all talking about lol!

Regards,

Ron

I'm no engine guru or engineer but what you all are saying is that my 1:1 car wastes more gas on the freeway than driving around the city? Re: to larger vs. smaller track.

I may be wrong but doesn't the carb load up more with fuel at low RPM's and then when you pull the trigger you loose more crude fuel than on a long straight? Engine actually leans out…no? A small track is like getting a red light at every corner.

An engine doesn’t care how many times or how long it takes to get around the track, it’s about how much time it’s on the track overall.

Ron, could you correct me if I’m wrong?

I was struggling at first to get real good run time out of this motor. But I have since leaned the top end alot, and backed down my throttle endpoints, plus added a little expo to my radio to tame it down. This motor by far creates way more power than I need or am used to.

I am now able to consistently pit after the 10 minute mark. I bet I can go 11:30 on most days. I am racing on a large indoor track, HCRC in Danville Indiana. Think outdoor size, inside. The temps have been in the 20s and 30s. I was kinda worried to get the motor warm, but I am running in the 190-210F range now in these cold temps.

Very impressed with the mill. I have been using an Re10, I will go back to my 2013 this weekend to compare.

Question:
How is this engine on sensitivity to tuning. Last motor i had was a ninja .21 and was a pain in the arse, i could tell a difference in performance between night and day if i didn't re-tune, where the axial .28RR i had in my truggy would constantly put out peak performance no matter what time of the day it was. I could go to the track and not have to worry about my engine running right where my ninja was just the opposite. I don't really fear tuning but it makes it much nicer when your engine will perform with out retuning it every time you go to the track.

no these are completly different than a real car.These will get better city than highway!!lol.. The less the throttle is pulled open the less fuel is being used. a straight if you have it full throttle is using the most fuel. and if your tires ar espinning out yoou are using more power than is neccesary,(thus wheel sping).When I let my nephew drive my buggy he gets like 13+ minutes per tnak becasue he is only giving it light throttle then brake,light throttle then brake and so on. Then when I drive I get 10.5 becasue I am pulling the trigger more and for a longer duration.

Its normal to have to tune your engine a little bit for temperature,humidity changes. The axial because it is a big block can still produce good power even though it may be run too rich. I had one. The .21 race engines are different. You will notice more when it is too rich. BUt this engine doesnt require much. I have had other engines where the tune would be totally off in a period from morning to afternoon. But the B5 is very consistnat. And if you do need to adjust it its not much.foe me just an hour or 2.

if your drive your real car at full throttle most of teh time... your mileage range will be alot less than you city.... also these are 2 stroke engines not 4stroke.. and you burn more in city than highway because you are mostly in low gear.. these cars are single speed....

Exactly, the less you pull the trigger the less fuel you consume. A smaller tighter track requires more pull of the trigger and more braking which means that the energy used to get you from point a to point b is wasted as soon as you hit the brakes, vs. a long straight all the energy is being used to advance “coast”.


But anyway….who cares. I just feel I have a good point. lol



Kgombe, by the way I don't drive my buggy full throttle, do you?

Sorry I've been off topic, back to the thread, does anyone know if the orion 2013 pipe performs the same as the werks 2013?