gensem
100 kW
Neptronix If you need to keep at least 30mph going up 10%+ hills you might fry the pie even in such a short course.
"peak power" - Trek 4300 20" Magic Pie build.
- Thread starter neptronix
- Start date
I might need to go up to 30mph, but i only need to do 25mph average to win, which will be NO problem 
they'd really have to redesign their bike this year to come even close. That bottom bracket motor of theirs is certainly near it's thermal limit in the 1100 watt form. I'll be doing about 2000w constant.
I have some tricks up my sleeve, guys. I won't mention them on a public forum, but i think that i can make the pie handle a bit over 2000w continuously. When i hooked up 120v/30s, that's about what it was running when i was doing 38-42mph constant for 10 miles, and only ended up 100F at the side cover. This made me pretty hopeful. This was during colder weather though.
they'd really have to redesign their bike this year to come even close. That bottom bracket motor of theirs is certainly near it's thermal limit in the 1100 watt form. I'll be doing about 2000w constant.I have some tricks up my sleeve, guys. I won't mention them on a public forum, but i think that i can make the pie handle a bit over 2000w continuously. When i hooked up 120v/30s, that's about what it was running when i was doing 38-42mph constant for 10 miles, and only ended up 100F at the side cover. This made me pretty hopeful. This was during colder weather though.
jmygann said:
Don't worry, already did my research. Rode that bike in person a few months ago, saw the factory, etc ( details buried in this post, lol. )
It's got pretty good power, but it's weak in comparison to what we build here. Very advantageous on hills though.
Funny thing about the throttle response.. it's basically an on-off switch like the MAC/BMC motors are on infineon EB2 - there is about 1 degree of throttle rotation between slamming 50-100ft-lb of torque into that poor little rear hub ( which makes a slam/clunk sound ) and not doing anything. I thought that was strange considering that they designed their own controller - not an infineon. But it makes since why one guy basically burned out from the starting line during the last race. Power wheelie!
Tom Tom
100 W
I certainly agree Whiplash.
I think Tench's big hit ( http://endless-sphere.com/forums/viewtopic.php?f=6&t=37489 )with a mid drive is one really sweet bike.
If someone made frames like his available for sale they could run with the opti's
I think Tench's big hit ( http://endless-sphere.com/forums/viewtopic.php?f=6&t=37489 )with a mid drive is one really sweet bike.
If someone made frames like his available for sale they could run with the opti's
$14k, and people are slamming Stealth for their 9 or 10k bikes......
I'll take my homemade Mac + A123 and few hundred $ full suspension built that cost about $1200.
I think Opti is really pushing the limits of their prices. I don't really blame them though, they have essentially no competition, just like Stealth. If someone is going to drop 8k on an ebike, that same person also likely has the money to drop 14k on one. Can you say niche market?
I'll take my homemade Mac + A123 and few hundred $ full suspension built that cost about $1200.
I think Opti is really pushing the limits of their prices. I don't really blame them though, they have essentially no competition, just like Stealth. If someone is going to drop 8k on an ebike, that same person also likely has the money to drop 14k on one. Can you say niche market?
GOD DAMN, magic pie motors stink like hell when you open them~!!!
Looks like plenty of room to put goodies in.. ;D
Looks like you could fit another motor inside the motor.. XZibit, where are you when i need you most?
Looks like plenty of room to put goodies in.. ;D
Looks like you could fit another motor inside the motor.. XZibit, where are you when i need you most?
Guys;
Shit just got crazy.
I may be running two 26" pies. One rear, one front. I have an opportunity to buy a few of them used as a package.
This 20" and it's geometry issues are just no good, man. I've got basically a downhill bike geometry, but i'm going uphill. After riding some major uphill recently, i feel like i am asking for a darwin award basically.
Luke says it's a suboptimal situation, but why the hell not. 1500w constant on each motor is good for 30-40mph.
16lb on the front wheel is good ballast.
Opinions?
Shit just got crazy.
I may be running two 26" pies. One rear, one front. I have an opportunity to buy a few of them used as a package.
This 20" and it's geometry issues are just no good, man. I've got basically a downhill bike geometry, but i'm going uphill. After riding some major uphill recently, i feel like i am asking for a darwin award basically.
Luke says it's a suboptimal situation, but why the hell not. 1500w constant on each motor is good for 30-40mph.
16lb on the front wheel is good ballast.
Opinions?
Spicerack
10 kW
neptronix said:
Do it!
zombiess
10 MW
Do it
Brentis
10 kW
Do it.
God damn you
Do it. :wink:
God damn you
Do it. :wink:
Brentis
10 kW
Can I call dibs when your done with the 20" Pie?
Maybe a partial trade for my Hx3540?
Best of luck to ya up the hill.
Then Zombiess 2nd, if he shows. :wink:
Maybe a partial trade for my Hx3540?
Best of luck to ya up the hill.
Then Zombiess 2nd, if he shows. :wink:
Brentis
10 kW
neptronix said:
I agree with LFP not optimal design, but as a dedicated, racing electric bicycle, splitting the load across the two motors should allow you to run significantly cooler @ your targeted speed.
Or, you could run faster/hotter.
Set the record higher
Consider "ass" Pie, front Mac.
Use the freewheeling, lighter front motor as a helper if the Pie needs it.
Best of luck.
Brentis said:Can I call dibs when your done with the 20" Pie?
Maybe a partial trade for my Hx3540?
Best of luck to ya up the hill.
Then Zombiess 2nd, if he shows. :wink:
I'd actually love to get rid of the 20" pie right now. I'll include the tube and 2.3" BMX tire. It's in pristine condition for the most part. $170 plus shipping sound fair?
Not interested in the HS/HT though, sorry..
. Shouldn't be too hard selling it though.
Brentis
10 kW
That's a fair price.
But I rescind my dibs. :wink:
Was hopin' for a trade.
Should sell to someone local/closer.
After shipping, (tax & customs maybe), it would make sense to just buy direct from Gary.
He is about an hour drive from my place, and have family minutes from him.
Good luck on the sale.
So have you decided on a dual hub setup?
But I rescind my dibs. :wink:
Was hopin' for a trade.
Should sell to someone local/closer.
After shipping, (tax & customs maybe), it would make sense to just buy direct from Gary.
He is about an hour drive from my place, and have family minutes from him.
Good luck on the sale.
So have you decided on a dual hub setup?
Lol yeah, i was thinking that. I'd be better off shipping the conUS.. you may be saving maybe $10 buying used from me, so forget it.
Pretty sure i'm gonna rock the dual setup I'd rather have a cromotor.. less weight, lower voltage etc.. but i just can't swing it ... .. and the MP is a good motor for toolin' around town after the race anyway.
Pretty sure i'm gonna rock the dual setup
I'd rather have a cromotor.. less weight, lower voltage etc.. but i just can't swing it ... .. and the MP is a good motor for toolin' around town after the race anyway.zombiess
10 MW
Neptronix, if I make the event which I am planning to do right now ill gladly lend you a motor setup in a wheel or a whole bike if I have a spare. Even if you ride a dual pie setup it would be cool to ride together so we can frock pikes peak at the same time. But we shouldn't let our motors touch. I'm starting to sound like phillistine lol.
auraslip
10 MW
- Joined
- Mar 5, 2010
- Messages
- 3,535
nep, I have you thought about oil cooling?
http://endless-sphere.com/forums/viewtopic.php?f=30&t=34369&hilit=cooled&start=45
Check this out:
That's pretty incredible. You might even be able to do the same with your mac motor and compete.
That being said, I may be in the market for a 24" magic pie.
http://endless-sphere.com/forums/viewtopic.php?f=30&t=34369&hilit=cooled&start=45
Check this out:
That's pretty incredible. You might even be able to do the same with your mac motor and compete.
That being said, I may be in the market for a 24" magic pie.
o00scorpion00o
100 kW
What's opti's average up the peak?
Surely the pie in a 24" can beat it? Dave have you not gone up there yet?
Come on man, get on it!!!
Surely the pie in a 24" can beat it? Dave have you not gone up there yet?
Come on man, get on it!!!
zombiess said:
If you definitely have a motor for me to borrow, then i'll sell off the pie now and stop worrying about this build & chalk it up to experience & a demonstration of what a motor that doesn't get fair air time on here can do..
Having two 26" pies would be nice, but after the race i'd just end up riding my MAC most of the time.
Got two frames with some pretty major torque plates on em. I'm down to represent team greyborg 4 sure.
zombiess
10 MW
I suggest not selling anything until I actually know for a fact what's going on with me attending.