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Engine Selection

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solly69

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When looking for a new engine I'm not sure what is more important when comparing the 2.

-RPM's
-HP
-CUBIC CAPPACITY
-STROKE
-BORE

Could someone please put em in order for me so i know what to look for the most.
I want it for my Robitronic (LOSI RACING TEAM) Buggy that i am going to start racing with soon but need a new engine 1st.
Thankyou
 
For a buggy and racing, RPM's are good for the long straights while torque is good to clear the jumps after a quick cut in on a turn. Also, a smaller engine generally runs longer on a tank, so requires less fill-ups for the same amount of run time as a larger engine.

A solid .21 would work well in a buggy. .21's generally have higher RPM's and do well on gas. You just need to figure out what you want to spend so you can get with with good power (torque/HP) as well as RPM's.

What do you have now?
 
i have a axial .28 but it just dont go fast enough haha i want something faster.... I'm thinking of getting the OFNA JAMMIN .28

would it be any good for racing in my Buggy??
 
I had heard when I was thinking about racing my buggy that the buggy engine size was the .21. I've heard that that size tends to rev higher giving a bit more speed.

Another way to get a nit more speed is to change your gear ratio.
 
Most orgs limit buggy motors to .21s so if you're going to race it...check your local track rules before you dump money into a motor you can't race. 21s will give you longer run time and plenty of power for a buggy for the most part. I ran an OS 21VG in my Buggy and it was more than enough....but still a budget engine compared to the VSpecs and a few other hot motors.
 
for racing your best bet would be an engine that is a .21 although theyre not as big and powerful they can still keep up with the .28 engines. your amount of pit stops would be less than a bigger engine meaning you get more track time. but it also depends on how your races are run.
In Bismark/Mandan ND there is a national track I run at every now and then Adam Drake will show up, but I'm telling you this because we run timed races. whoever completes the most laps in a certain amount of time wins .21 is the best selection and most used for buggies and truggies even most monsters run .21 engines here

if your looking for a .21 engine, I run Dynamite's new engine in my Losi 8T, cost is around $120-$130, good quality engine.

if your looking for a .28 the XTM 457 Pro is a great buy for around $150. I used to run it in my Losi and it just SCREAMED power now I run it in my XTM Mammoth ST fastest and snappiest engine I have ever seen.

and one more thing if you want to have better fuel mileage, get an air restrictor, it fits in the carburetor, but be careful buying one because they make different sizes you dont want to get the wroung one. The Dynamite engine comes stock with one
 
the engine is too big, too much power. depending how much money you want to pay. if you want a good .21 engine at a great price, go to www.hobbypeople.net and check out the XTM 24.7 engine w/pull start - sg shaft. I had it, great engine, tons of power.

or go to www.amainhobbies.com and check out the Dynamite Mach 2 .21 SG Buggy Engine, another great engine I currently run

both engines cost $119.99. I reccomend them to anyone
 
Or how about a GRP .21, they are just about out. Can't beat their quality.
 
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