Warp vs. Agni???

[Jay64]

I have been looking at a lot of car builds lately, and it seems like a LOT of them are going with one of the Warp motors. Is this type of motor better for a heavier vehicle then say an AgniMotor? It seems like they don't have more hp or more rpm. Do they produce more torque or something?
I would like to eventually build a EV car/truck, but I am also looking into building a kind of heavy motorcycle with long range, and 60ish mph. What would be a good motor for that? I would like to stick with AgniMotors because they seem like really good motors, but I don't want to kill one by putting it in something that is too heavy. Anyone have any good suggestions for car/truck/heavy motorcycle conversions. The heavy motorcycle conversion will have some liberal amounts of space.

 

[frodus]

apples and oranges...

warp motors are behemoths, and torque monsters. Their continuous HP rating is realistically what the peak HP rating of the agni is. Their RPM might be about the same though.

Where you need to start is with calculations... calculate what HP is required to move a car of xxxlbs plus a rider xxxlbs at a speed of 60mph. Then calc what max hp is needed to accelerate at xx ft/s^2. Then (and only then) can you chose a motor. I seriously doubt an agni could move a 2500lb car with an acceptable acceleration.

I'd look at Advanced DC motors, D&D motors and Warp/Netgain. Those are the motors for conversions. Agni's are a little on the small side with peak HP ratings of 25-30Hp.

 

[Jozzer]

Indeed you'd want at least 2 Agni's in a car/van. 3 wouldn't hurt if you wanted some excess power or very heavy loads. Genewin posted pics of his twin Lemco's that are used in a midivan...hopefully he will pop in and say how they perform.
Agni's have a fair advantage it their power to weight ratio over most other motors, I found the Perm very easy to overload/heatup, and doubted it would be much use in a vehicle that could make it work consistanly hard. So far the Agni's better efficiency has kept it cool no matter what I've thrown at it, personally I would try a pair in a small car.
That said, the Warp motors are cheaper, and I'm sure if properly tuned by Jim Husted (who prep's the Killacycle motors...essentially the same motors I believe) alot of fun could be had with a warp!

 

[genawin]

The Lemco's perform a little better than the original 1000cc up to about 30 then tails off to it's top speed of about 45 it will go faster but i don't like to stress it and i'm useually more concerned about making sure i've got enough range to get home again , just incase Jay dosen't know what a rascal is - - R-ealy A S-uzuki C-onstructed A-t L-uton(uk) did you get the Suzuki suppercarry in the US - good pick up for a conversion .

 

[Malcolm]

The practical difference seems to be that the permanent magnet pancake motors are pared down to the bare minimum, so there's little margin for pushing them beyond their rated output. Series motors like the Warp range are much heavier and can soak up a lot more punishment (heat). They can also be run at much higher voltages (often 144V), which effectively stretches the torque curve and gives you useful power at higher speeds. The price you pay is added weight.

Series motors also need an extra contactor to reverse the windings (if you want to go backwards that is) and it's difficult to use them for regen.

 

[Jay64]

I thought the continuous rating of Agni was 20hp and the continuous was 40hp? I'm not sure what the final weight will be, especially considering the fact that the motor will play a big part of that. Also, I haven't come to a full decision on which types of batteries to use so that will probably effect weight too.
One of the projects I am looking at now is building an electric goldwing. I bought an old '82 1100cc Goldwing Interstate. This is a stock photo from the internet that I just found.

The info that I could find for this bike online was that it weighed about 694 lbs.
The one I bought also has all the fiberglass rear saddle bags, so that will add some weight, maybe about 30-50lbs.

I have no idea how heavy the ICE motor is, but I'm sure that will be a significant weight removal to help offset the battery/motor weight. The good thing is that the frame is huge. There is a lot of space in it for motor and battery. So I am thinking weight wise, somewhere in the 700 lb. range. However, I would like to make a long range bike out of this, so I will probably end up packing the saddle bags with a lot of stuff for the trip so that might add another 100lb or so.

No, I don't think they brought that Supercarry into the US.

 

[Jay64]

Oh yeah, here are some of the original specs.
Max Power 83.00 HP (60.6 kW) at 7500 RPM
Power/Weight Ratio 0.26 Hp/Kg
Top Speed 192 km/h (119mph)
Acceleration (dart, speedup) time
0-100 km/h 5.5 seconds
0-60 mph 5.2 seconds