apple to apple.... are tekins that much better than castle?
08-26-2010, 01:05 PM
#16
When I ran 1/8 electric buggy on 4S, I needed a guaranteed 15 minutes regardless of conditions and driving style, on a 5000mah 4S pack, I could dump them in about 13 minutes, no warmup, etc. The 6000mah pack gave me about 18 minutes of runtime regardless of how I drove it.
08-26-2010, 01:26 PM
#17
On one battery with 4S you will need in the 6000mah+ range with a conservative motor like a Tekin 1900 or Castle 1800 buggy style motor.
When I ran 1/8 electric buggy on 4S, I needed a guaranteed 15 minutes regardless of conditions and driving style, on a 5000mah 4S pack, I could dump them in about 13 minutes, no warmup, etc. The 6000mah pack gave me about 18 minutes of runtime regardless of how I drove it.
When I ran 1/8 electric buggy on 4S, I needed a guaranteed 15 minutes regardless of conditions and driving style, on a 5000mah 4S pack, I could dump them in about 13 minutes, no warmup, etc. The 6000mah pack gave me about 18 minutes of runtime regardless of how I drove it.
08-26-2010, 01:28 PM
#18
I was able to run for nearly 19 minutes at a "smart" race pace with a 1700kv T8, 4s 5000 40c Thunder Power geared 17/44 in a Losi 8 buggy.
IT can be done but you have to drive smart.
If you want to mash for 20 minutes the guys are right, big 4s packs, and low k motors. You'd be better off with 5s and 6s.
IT can be done but you have to drive smart.
If you want to mash for 20 minutes the guys are right, big 4s packs, and low k motors. You'd be better off with 5s and 6s.
08-26-2010, 01:38 PM
#20
On one battery with 4S you will need in the 6000mah+ range with a conservative motor like a Tekin 1900 or Castle 1800 buggy style motor.
When I ran 1/8 electric buggy on 4S, I needed a guaranteed 15 minutes regardless of conditions and driving style, on a 5000mah 4S pack, I could dump them in about 13 minutes, no warmup, etc. The 6000mah pack gave me about 18 minutes of runtime regardless of how I drove it.
When I ran 1/8 electric buggy on 4S, I needed a guaranteed 15 minutes regardless of conditions and driving style, on a 5000mah 4S pack, I could dump them in about 13 minutes, no warmup, etc. The 6000mah pack gave me about 18 minutes of runtime regardless of how I drove it.
13minutes is not really efficient... Are you pulling a trailer or???
08-26-2010, 01:39 PM
#21
08-26-2010, 01:53 PM
#22
I ran on tracks with 200ft+ straight aways against nitros and electrics where you were on throttle most of the time, and at times in low temp conditions as well where traction was also low. Other tracks during the summer I got much better runtime do to a change in track setup (smaller tracks) as well as temps and traction.
Just because one person is able to pull a 30 minute run out of a 5000mah 4S pack doesn't mean you will experience the same outcome. And honestly, who wants to be babying the car around the track, especially running with nitros they don't have that issue, just refuel and go? I don't run electric to worry if I am going to make runtime, did plenty of that back in the day with 1400mah packs and brushed motors. That is probably why races in this area for 1/8 electric are limited usually to 12 - 15 minute mains.
So in short, I went for what was a guarantee on my pack selection to make runtime in any condition, and the 4S 6000mah pack was that regardless of how I drove, how the track was setup or traction was, etc.
I was able to run for nearly 19 minutes at a "smart" race pace with a 1700kv T8, 4s 5000 40c Thunder Power geared 17/44 in a Losi 8 buggy.
IT can be done but you have to drive smart.
If you want to mash for 20 minutes the guys are right, big 4s packs, and low k motors. You'd be better off with 5s and 6s.
IT can be done but you have to drive smart.
If you want to mash for 20 minutes the guys are right, big 4s packs, and low k motors. You'd be better off with 5s and 6s.
I was using a PolyRC 6000mah 25C 4S battery pack, these use Enerland cells. Excellent pack for its time. I believe an equivalent with better C rating if you can find it now is the Hyperion 6500mah packs. You can also do the maxamps 6500mah packs if you have the coin for it, but I don't.
keep in mind how the weight affects the car and factor that into your decision on what vehicle you go with. I found that in truggy at least compared to buggy, the battery pack felt excellent in there. I actually liked its weight compared to my lighter packs.
The main thing I would hate to see is someone spend there hard earned money on the assumption that Joe Racer got 30 minutes on a 5000mah 4S pack and when they go to do the same thing, they don't get close or worse, don't make runtime for the race and feel they wasted money.
08-26-2010, 02:06 PM
#23
Run time is VERY track dependent. I have swings of nearly 5 minutes in run time at several different tracks that I run on regularly. I am talking actually completing mains at race pace in the top half of drivers. Practice is not racing. I can run 20 minutes easily in practice with a 6s/1400 2600 pack but I barely can finish a 15 minute main when actually racing.
If you absolutely need to run 20 minutes DO NOT go with a 4s setup. Probably 1 out of every 30 people can actually run a full 20 minute main with a 4s 5000 pack. It is VERY borderline. Change one jump or add 10 feet to a straight and you won't make it.
5s 4500-5000/1700kv or 6s 3600-4000/1400kv will finish a 20 minute main easily in a buggy geared to run similar top end as a nitro.
If you are just bashing and want to run around +/- 20 minutes with your car and not actually racing, then 4s 2050 or 1900 is probably the best setup for your purposes. I would probably go MMM with a Tekin 2050.
If you are racing and need to complete an actual main that is 20 minutes. you will need to go 5s or 6s to do it consistently OR as Cain pointed out, a 4s 6000 pack.
If you absolutely need to run 20 minutes DO NOT go with a 4s setup. Probably 1 out of every 30 people can actually run a full 20 minute main with a 4s 5000 pack. It is VERY borderline. Change one jump or add 10 feet to a straight and you won't make it.
5s 4500-5000/1700kv or 6s 3600-4000/1400kv will finish a 20 minute main easily in a buggy geared to run similar top end as a nitro.
If you are just bashing and want to run around +/- 20 minutes with your car and not actually racing, then 4s 2050 or 1900 is probably the best setup for your purposes. I would probably go MMM with a Tekin 2050.
If you are racing and need to complete an actual main that is 20 minutes. you will need to go 5s or 6s to do it consistently OR as Cain pointed out, a 4s 6000 pack.
08-26-2010, 02:11 PM
#24
3 tekin rx8 all went bad for different reasons, tekin replaced 2 under warranty and the other one I had to pay some money.
2 mamba monster esc 1 1/2 years of running and no problems.
Matt
2 mamba monster esc 1 1/2 years of running and no problems.
Matt
08-26-2010, 03:06 PM
#25
get both. Tekin motor on monster esc
I really like the tekin motor but prefer the monster over the rx8
I really like the tekin motor but prefer the monster over the rx8
08-26-2010, 06:34 PM
#26
Tech Adept
If service is important i wouldn't recommend tekin, products are great but i experienced the worst customer service i have ever had with any product.
08-26-2010, 06:57 PM
#27
I agree, Tekin 1700/1900 or Castle 1800. 2200 is a lot of motor in a buggy. I run a MMM/tekin 1700/4S. This combo has plenty of power everywhere.
08-27-2010, 11:09 PM
#28
i ordered a castle 2200 combo last nite..
it will either stay mine or go into my sons 8ight later this year.
anyhow.. now my question is ..
what battery is going to give me the longest runtime?
3, 4, or 5s ?
or is it all about the mah
it will either stay mine or go into my sons 8ight later this year.
anyhow.. now my question is ..
what battery is going to give me the longest runtime?
3, 4, or 5s ?
or is it all about the mah
08-28-2010, 05:03 AM
#29
With that motor, a 4S battery will probably be your best bet. If you go to 3S, make sure you get a high C-rated battery. A 5S battery on this motor will be plain stupid fast. Hyperion used to sell a perfect battery for this setup but they had to discontinue it due to international shipping restrictions. Now the biggest battery you can get (with out having cells in parallel) is a 5400. You could always go with two 4S packs in parallel if you need the runtime. Two 4S 3300 (6600 equivalent) packs would most likely finish a 20 minute main. As said above, you runtime will depend on the track. Last weekend, I finished a 15 minute main and only used 2740 mAh from a 5200 pack (you can expect to get 80 to 85% of the rated capacity). At that rate, I could have finished a 22 minute main. The track was small, slippery, and technical so there wasn't much time spent at full throttle. I will typically use around 3500 mAh for a 15 minute main (on 4S, tekin 2050).
08-28-2010, 05:51 AM
#30
Everyone tells me it's overkill but it brings a smile to my face every time I drive it. Plus I'm untouchable on the straights.
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