Jay64
100 kW
Ok, I'm realizing that I am getting a few different posts all related to this one build. So I am going to try to condense it all to this one post. And hopefully that will help to put all of the questions into context, so I am not having to talk about the whole project with each question. This thread will be a combination of a request for advice and also a documentation of the build.
I'm looking to build a non frock e bike to compete on road courses. I hope to use this bike for various races, the initial build is for a run at Grange go-cart/supermoto track. The track is about 8/10ths of a mile long, and the heat race is 5 laps (4 miles) and the final is 12 laps (9.6 miles.) The race is limited to bikes with <11 hp. The track has 14 turns, so I am looking for something that will drive out of corners well, but still have a decent top speed on the straights. I am going back and forth on a couple of options for this bike and nothing is set in stone yet. Hell, I'm even open to running one of my hub motors if that turns out to be the best option.
I'm looking to use a Tidal Force frame that I have had for quite a while just sitting around waiting to be put to use. But, I also have a FS mongoose frame just sitting around doing absolutely nothing as well, and the more I think about it, that might be a decent option as well. Either option will require getting a set of good 26" rims. I started a thread asking for advice on which ones to get, here:
http://endless-sphere.com/forums/viewtopic.php?f=3&t=31585
Right now I am leaning towards a double wall DH setup. Right now Alex supra Rims are at the top of the list, unless I get info on a better set. Looking to wrap them in maxxis hookworm tires. Rules specifically state no motorcycle rims allowed. They do allow Pirelli ML75 tires, but that would require 20" rims and then I would also have to get a whole new frame option as well....right?
For the brakes, Avid BB7s are at the top of the list, again, unless I get info on a better set.
Motor: I have an 80-100, four baby colossus motors http://endless-sphere.com/forums/viewtopic.php?f=30&t=21969 , 9 cont rear and front hub motors, both versions of the mars motor, 2 agni motors, and a MY1020 60v 1000w motor. Right now I'm really leaning towards the baby colossus, especially given the event's <11hp rule. I want to put some use to those things and test them. I don't think the baby colossus motors have been really tested yet, so I don't know for sure how much they can take. edit: Jeremy Harris gave a best guess on calculations from the specs that it would probably handle 50a. That would be 140 volts for a 7kw motor. The motor choice would dictate a large part of the controller choice. Right now I am totally open to controller choices as I don't have many. Well, I do have controllers for the hub motors and the bigger brushed motors. I have a few kelly and a AXE controller for the agni and mars motors. But given the <11 hp limit, I probably won't use those options, but they are on the table if they work best. Right now, the one that I have seen come close for the baby colossus would be lyen's 24 fet 10kw controller. http://endless-sphere.com/forums/viewtopic.php?f=31&t=19612 Anyone know of anything better for this application with a colossus? Looks like the Lyen controller only goes to 100v. I wonder if I lower the volts to 100 and up the amps to 70, if the motor would handle it. I guess I have 4 so I could test that theory.
Batteries....definately need some advice on these. I do have a bunch of a123s, and headways, but really looking to use the Turnigy Nano-Techs for this build. How much ah would be recommended to get 10 miles out of a 72v turnigy nano-tech pack? I was looking at the 6s 5ah 45C/90C packs. 3 of these in series should get me close to the 72v range of the baby colossus. Would 10ah of these batts be good for 10 miles of full throttle out of 140 turns?
Drive components, I'm looking to do a dual rear freewheel for the motor drive. SoSauty is sending me a list of parts for this:
White Ind 16T Eno (freewheel) w/ adapter to 3/8" shaft(can be bored out), w/ tool,
ACS Crossfire 17T freewheel,
5 130BCD sprocs 39T to 53T,
2 1/8" BMX type chains, a $9 Wal-marty & a nickel plated Wipperman,
Recumpence 130mm BCD rear adapter w/ hex bolts and sprocket bolts.
Any thoughts, advice, criticism, etc are openly invited, just keep in mind, this particular version of this build is for a specific initial event that has a couple of specific rules. So, no, I won't be throwing 30 kw at an Agni, eventhough eventually that might be a fun build.
I'm looking to build a non frock e bike to compete on road courses. I hope to use this bike for various races, the initial build is for a run at Grange go-cart/supermoto track. The track is about 8/10ths of a mile long, and the heat race is 5 laps (4 miles) and the final is 12 laps (9.6 miles.) The race is limited to bikes with <11 hp. The track has 14 turns, so I am looking for something that will drive out of corners well, but still have a decent top speed on the straights. I am going back and forth on a couple of options for this bike and nothing is set in stone yet. Hell, I'm even open to running one of my hub motors if that turns out to be the best option.
I'm looking to use a Tidal Force frame that I have had for quite a while just sitting around waiting to be put to use. But, I also have a FS mongoose frame just sitting around doing absolutely nothing as well, and the more I think about it, that might be a decent option as well. Either option will require getting a set of good 26" rims. I started a thread asking for advice on which ones to get, here:
http://endless-sphere.com/forums/viewtopic.php?f=3&t=31585
Right now I am leaning towards a double wall DH setup. Right now Alex supra Rims are at the top of the list, unless I get info on a better set. Looking to wrap them in maxxis hookworm tires. Rules specifically state no motorcycle rims allowed. They do allow Pirelli ML75 tires, but that would require 20" rims and then I would also have to get a whole new frame option as well....right?
For the brakes, Avid BB7s are at the top of the list, again, unless I get info on a better set.
Motor: I have an 80-100, four baby colossus motors http://endless-sphere.com/forums/viewtopic.php?f=30&t=21969 , 9 cont rear and front hub motors, both versions of the mars motor, 2 agni motors, and a MY1020 60v 1000w motor. Right now I'm really leaning towards the baby colossus, especially given the event's <11hp rule. I want to put some use to those things and test them. I don't think the baby colossus motors have been really tested yet, so I don't know for sure how much they can take. edit: Jeremy Harris gave a best guess on calculations from the specs that it would probably handle 50a. That would be 140 volts for a 7kw motor. The motor choice would dictate a large part of the controller choice. Right now I am totally open to controller choices as I don't have many. Well, I do have controllers for the hub motors and the bigger brushed motors. I have a few kelly and a AXE controller for the agni and mars motors. But given the <11 hp limit, I probably won't use those options, but they are on the table if they work best. Right now, the one that I have seen come close for the baby colossus would be lyen's 24 fet 10kw controller. http://endless-sphere.com/forums/viewtopic.php?f=31&t=19612 Anyone know of anything better for this application with a colossus? Looks like the Lyen controller only goes to 100v. I wonder if I lower the volts to 100 and up the amps to 70, if the motor would handle it. I guess I have 4 so I could test that theory.
Batteries....definately need some advice on these. I do have a bunch of a123s, and headways, but really looking to use the Turnigy Nano-Techs for this build. How much ah would be recommended to get 10 miles out of a 72v turnigy nano-tech pack? I was looking at the 6s 5ah 45C/90C packs. 3 of these in series should get me close to the 72v range of the baby colossus. Would 10ah of these batts be good for 10 miles of full throttle out of 140 turns?
Drive components, I'm looking to do a dual rear freewheel for the motor drive. SoSauty is sending me a list of parts for this:
White Ind 16T Eno (freewheel) w/ adapter to 3/8" shaft(can be bored out), w/ tool,
ACS Crossfire 17T freewheel,
5 130BCD sprocs 39T to 53T,
2 1/8" BMX type chains, a $9 Wal-marty & a nickel plated Wipperman,
Recumpence 130mm BCD rear adapter w/ hex bolts and sprocket bolts.
Any thoughts, advice, criticism, etc are openly invited, just keep in mind, this particular version of this build is for a specific initial event that has a couple of specific rules. So, no, I won't be throwing 30 kw at an Agni, eventhough eventually that might be a fun build.