New Motor Question

[Radejr]

I bought a Raven ST it has a 19Turn stock and the ESC holds up to 15 Turn.

I went a bought a 15 Turn motor and when I put it in there it doesn't seem like it is much faster at all. I think my 19 Turn takes off faster and the 15 Turn kinda takes off slower. We had a make shift circle track and we were clocking it and my 19 Turn pretty much was right on or faster than my 15 Turn.

I broke them both in properly. Is there something I hafta do with my ESC? I have a setup button, but don't know what it does. Also take in account the wires on the motor are not soldered on the 15 Turn, but the ones on my 19 Turn are. Could that make up that much difference. Should I be able to tell the 15 Turn go faster? I would think it would be noticable.

[associatedude92]

You proably have to change the gearing.

[Radejr]

Its a 80T Spur gear and a 20T Pinion Gear. With the stock 19 Turn motor that sucker flys. It says its a 19 Turn Modified Racing Motor, but I would still think this 15 Turn would be faster. Its a Peak Racing Motor. So I guess to get better acceleration and overall top speed I need to get a larger pinion or larger spur?

What kinda gears should I go with? Knowning 20 Pinion 80 Spur as of now.
And with the gearing perfect on a 19 turn motor and gearing perfect on the 15 turn motor the 15 should be noticably faster right?

I am hoping I just didn't go and waste $25 on a new motor. I am fine spending a few Extra $'s on a spur and pinion gear.

[associatedude92]

Ok now i have a question. What would be a better motor,Trinity P2K2 or a Formula SV2 Pro BB 19x2 I race not bash and run on a tight track, but i have heard that the trinity is pretty fast. So I dk

[associatedude92]

Well I can tell you, but am not completely sure. I would think you would have to go down to a 18. But don't yell at me if i am wrong.

[wubby]

Firstly, you should honestly change the gearing on the thing. Second, the reason it accelerates slower is because it probably has less torque. The higher the turns, the more tourqe. For your gearing question, read this thread: http://www.rcuniverse.com/forum/m_3255405/tm.htm . I know it's a bunch of reading, but that's the most indepth you can get about gearing really.

[bensb4]

im using that sv2 19x2 on my rc10 buggy and its faster than a p2k2 anyday and the brush life is amazingly longer.

RADEJR you should look in the manuel sometime they list common motors and gearing.basedon how the 19t was geared is say you need a 17 or 18 pinion.

[highroller]

If the 19turn motor came with the kit, it's power is neither like a true 19turn racing motor like Trinity's Chameleon, or other racing 19turn motors. It's actual performance is similar to a hi rpm stock motor. The 15 turn motor depending on which style it is develops power differently so it generally has to use a smaller pinion and sometimes a bigger spur. Even with the correct gear ratio, you'll find that a larger spur enables some modified motors to accelerate better. Start with a 18tooth pinion, maybe a 17 tooth pinion for the 15turn motor if you change the spur to a larger size 83 or 85 start with a 19 tooth pinion. When you run the 19turn the gear ratio is a 4.00 spur divided by pinion with modified you want to start somewhere at 4.48 to 4.62 with a 15 turn, depending on size of tires. A gear ratio of 4.55 (80 spur divided by 4.55 = 17.58 for the pinion). So pinion should be about a 18.

[Radejr]

I've look in my manual and it doesn't tell me nothing. It tells me what I have not what it does. It tells me I have a setup button on the ESC, but doesn't tell me how to work it. I think its come panic brake thing. Its the first place I always look if I have a question or a problem, but in this case Sportwerks does not have a good manual for their R/C.

[oldschooler]

Well if you run a tight track I would get a P2K2 simply because they dont have the torque you need on a tight track I would go for a monster stock Pro or Co27 Pro I have several of the monster stock pros and I just plain like them I have a friend running a chameleon pro 19T and I still smoke his doors on lap times you . JMHO

[highroller]

The key to getting any motor running the way you need is through gearing and using the right combination of brush and spring tension. Stock motors even though they are 27turn produce different power the Epic Roar Stock have the highest rpm level, Epic X next, Monster Stock2, CO27, P2K2, Reedy MVP, Orion/PeaK Peak. For speed the pinion is going to be on the higher side, Brushes might be of high silver content Reedy 767, Trinity 4499 etc with either a Red/Green or 2 Red springs for more torque go down 1-2 pinion teeth or use a brush with less silver Reedy 766 or a polarized setup 766+, 760- with two Red springs.
In oval racing with 2.25 tires, 116 spur track has tight corners springs changed from a Purple/Red to a Red/Green springs with Reedy 767 hollows.
Epic Roar Stock 31-32 pinion, EpicX 32-33, Monster Stock 34-36, CO27, 36-38, P2K2 38-40 maybe a 41. On other tracks that are longer with wider turns or are banked springs are heavier and gearing goes up 1-2 teeth or spur dropped to a 114 or 112. The same occurs when using different styles of motors in other types of racing, changing either motor setup or gearing.
With 19turn motors you have to gear them higher than some stock motors or similar in range for them to produce good speed. While they are lower in turns the power produced is similar to that of the hi rpm type stock motors but torque produced is generally lower. For offroad racing B4 spur is 83 with Monster Stock Red Spring with Reedy 767+/760- for groomed surface pinion is 21/22 as surface dries out then a 19-20 pinion is used, might switch to a 85 spur.

[Radejr]

Ok wow thats alot of information heh. Thanks for the help.

So I guess with this 15 Turn Motor. I need to go from maybe a 20T Pinion to a 18T? Should I also change the Spur or try were its at. For more acceleration if I add a 18T pinion and its not enough acceleration or doesn't top out soon enough I could also do a Higher spur gear from like 80 to 82 or 84?

I don't know any of the combos I should be doing yet or anything like that I seen the post about ratios and stuff looked over it, but havn't done any math for mine. I don't have any extra pionions or spurs so I am lookin at what I need to order.

[highroller]

The normal method is to change the pinion in one tooth increments until you acheive the results you need. Speed- then look for car to accelerate and get up to speed smoothly, it should run for duration of battery charge slowing only when batter begins to dump. Slowing after 1-2 minutes could be overgearing, springs too light or a maintenance issue brushes are starting to wear out. Normally 2 Red (trinity) springs are good for motors in 15-19 turn range.
Once you find the correct gearing using the spur and pinions you have, use that same numeric gear ratio by spur divided by pinion = gear ratio. 80/17 would give you a 4.51 gear ratio (example) so if you went to a 85 tooth spur to find what pinion size to use 85 divided by 4.51 = 18.847 so pinion would now be a 18 or 19 pinion. There may be very small differences in how car performs with the larger spur.