2-speed electric
09-03-2010, 04:08 AM
#16
You can still gain from using a 2 speed but it really depends on how and where you plan to run. IF you have the time patients and resource, I think the two speed can help cause you can really over gear second (for more top end) without continuously overloading your motor/esc/bats. For instance, with a single speed, say you get the tallest gear that allows 10 min of fast racing with your electronics running ~ 150 deg. Well you can take and use a gear with 2-5 more teeth for your second and use 1-2 teeth smaller for first gear.
As for the brakes, I don't like to use the motor as this uses energy and therefor adds heat to the eletronics. The bad side is the added weight but for my 1/8 scale, doesn't really matter. Just use a Y or mix in on your third channel.
As for the brakes, I don't like to use the motor as this uses energy and therefor adds heat to the eletronics. The bad side is the added weight but for my 1/8 scale, doesn't really matter. Just use a Y or mix in on your third channel.
09-03-2010, 09:23 AM
#17
Sorry I was just emphasizing what you said... that it wouldn't be better...
Yes... Single speed is all you need. I have seen a few 8th scale setups up and running and the grunt and top end destroys a nitro car by so much its not funny, all setups where single speed. The advantage lies in the fact the you can add more batteries and up the "octane" real easy with the right motor and ESC. A simple 2s setup will match or better any RTR nitro setup, 4s will beat a full race nitro motor, and 6s is just stupid fast. Google 8th scale electric and check it out yourself like this one...
Yes... Single speed is all you need. I have seen a few 8th scale setups up and running and the grunt and top end destroys a nitro car by so much its not funny, all setups where single speed. The advantage lies in the fact the you can add more batteries and up the "octane" real easy with the right motor and ESC. A simple 2s setup will match or better any RTR nitro setup, 4s will beat a full race nitro motor, and 6s is just stupid fast. Google 8th scale electric and check it out yourself like this one...
| + YouTube Video | |
09-04-2010, 10:47 PM
#18
Here is a good litmus test before trying things like this. Think of it this way. If a 2 speed trans made a brushless car run faster or better in any way at least ONE manufacture would have released a car with a two speed trans/brushless combo. How many cars are available set up like this? Zero. That to me says it's not all you think it will be, or just flat out woun't work at all.
09-05-2010, 05:55 AM
#19
Here is a good litmus test before trying things like this. Think of it this way. If a 2 speed trans made a brushless car run faster or better in any way at least ONE manufacture would have released a car with a two speed trans/brushless combo. How many cars are available set up like this? Zero. That to me says it's not all you think it will be, or just flat out woun't work at all.
Again, a 2 speed is not needed but can be done if the person has the know-how and the extra supplies. I personally wouldn't do it for a dirt/bashing setup unless there were some really long straights because you generally aren't doing lots of full speed sections. For on-road, I actually have come to perfer the two speed just cause my local track has several top speed sections. Initially, in order to increase my speed in these top speed sections I would simply increase pinion size. The problem is that during the other 80% of the track, I was creating a lot of heat. In order to increase my top end on the long straights, AS WELL as decrease energy expenditure during the other 80%, I simply switched to an extreme second gear with a smaller first gear. But then again, with today's ESC's, you can almost do the same thing by adjusting the throttle curves and so on.
09-05-2010, 06:45 AM
#20
I believe that's the same argument us nitro folks used to say about electric motors alltogether; that is until the first couple of company's started making electric RTR kits
Again, a 2 speed is not needed but can be done if the person has the know-how and the extra supplies. I personally wouldn't do it for a dirt/bashing setup unless there were some really long straights because you generally aren't doing lots of full speed sections. For on-road, I actually have come to perfer the two speed just cause my local track has several top speed sections. Initially, in order to increase my speed in these top speed sections I would simply increase pinion size. The problem is that during the other 80% of the track, I was creating a lot of heat. In order to increase my top end on the long straights, AS WELL as decrease energy expenditure during the other 80%, I simply switched to an extreme second gear with a smaller first gear. But then again, with today's ESC's, you can almost do the same thing by adjusting the throttle curves and so on.
Again, a 2 speed is not needed but can be done if the person has the know-how and the extra supplies. I personally wouldn't do it for a dirt/bashing setup unless there were some really long straights because you generally aren't doing lots of full speed sections. For on-road, I actually have come to perfer the two speed just cause my local track has several top speed sections. Initially, in order to increase my speed in these top speed sections I would simply increase pinion size. The problem is that during the other 80% of the track, I was creating a lot of heat. In order to increase my top end on the long straights, AS WELL as decrease energy expenditure during the other 80%, I simply switched to an extreme second gear with a smaller first gear. But then again, with today's ESC's, you can almost do the same thing by adjusting the throttle curves and so on.
09-05-2010, 10:15 AM
#21
i see where ya'll coming from, i already built it and test it and to tell the truth my trinity T-spec looks like it runs better. think i'm gonna try it single speed and see how it run
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
