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home brew
Jun 8, 2014 21:53:27 GMT -5
via mobile
Post by elanimal28 on Jun 8, 2014 21:53:27 GMT -5
I wanted an Eliols but got tired of waiting. I want to make it electric with a 6.7" motor and 28 CALB batteries. There a lot of hills where I live, so I'm thinking I'll need a transmission of sorts. Maybe a HD trany. I know they have some bikes that had a separate transmission from the motor. I can't think of anything else that Is more compact or easy to do. Here is what I have so far:   |
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Post by DaveJ98092 on Jun 9, 2014 0:10:07 GMT -5
Most electric motors have so much torque right at "Idle" that no transmission is needed. But at most a 2 speed would be about it, I'd think. A gear box has a lot of parasitic drag. I have thought about a CVT from a scooter behind an electric motor.
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home brew
Jun 9, 2014 18:55:24 GMT -5
via mobile
Post by elanimal28 on Jun 9, 2014 18:55:24 GMT -5
Most electric motors have so much torque right at "Idle" that no transmission is needed. But at most a 2 speed would be about it, I'd think. A gear box has a lot of parasitic drag. I have thought about a CVT from a scooter behind an electric motor. I think I'm going to try it without the transmission and see what happens. |
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Post by elanimal28 on Aug 4, 2014 12:27:33 GMT -5
Most electric motors have so much torque right at "Idle" that no transmission is needed. But at most a 2 speed would be about it, I'd think. A gear box has a lot of parasitic drag. I have thought about a CVT from a scooter behind an electric motor. I think I'm going to try it without the transmission and see what happens. Because of the hills in my town, I decided to complicate my life. Here is what I have so far: Attachment DeletedAttachment DeletedAttachment Deleted |
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Post by elanimal28 on Aug 4, 2014 12:41:06 GMT -5
I still need to add more support for the motor. I have a few items sitting around waiting to be installed next  : Attachment DeletedAttachments:
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Post by mtntech on Aug 5, 2014 10:35:50 GMT -5
Most electric motors have so much torque right at "Idle" that no transmission is needed. But at most a 2 speed would be about it, I'd think. A gear box has a lot of parasitic drag. I have thought about a CVT from a scooter behind an electric motor. A CVT using a belt (atv,scooter, snowmobile) is very inefficient. |
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Post by DaveJ98092 on Aug 5, 2014 22:48:29 GMT -5
Most electric motors have so much torque right at "Idle" that no transmission is needed. But at most a 2 speed would be about it, I'd think. A gear box has a lot of parasitic drag. I have thought about a CVT from a scooter behind an electric motor. A CVT using a belt (atv,scooter, snowmobile) is very inefficient. I'm not too sure about that. The Burgman 400 has a dry belt CVT that gets over 65-70 MPG. My Burgman 650 has a ECVT that the computer controls the pulleys and a centrifical wet clutch. I commute 82 miles round trip EVERY workday going in HEAVY stop and go traffic and average 52 MPG. This is a Fuel Injected 638cc P-twin 54 HP 625 pound motorcycle in a scooter frame. If I do a long tour of say 200 miles in the Cascade Mountains doing 75 MPH I get 56 MPG. I went from Casper WY to Laramie WY at over 110 MPH (115 MPH in some long runs) and got 46 MPG. And I run a car tire on it too Honda and Nissin both are using more and more ECVT's |
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Post by mtntech on Aug 6, 2014 21:15:05 GMT -5
Very may have been a little too strong, but rubber belt CVTs are only about 85% efficient when properly calibrated. The good news is that newer belt technology is seeing belts last even when subjected to 400+ HP. I had thought about using a belt CVT when I first started to design my RT, but then things changed.
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Post by elanimal28 on Aug 17, 2014 16:10:39 GMT -5
just got the 60 tooth rear sprocket from sprocket specialist.
Attachment Deleted
In the end, this is what I have: rear 60, front 12, transmision 11 and 12 on the motor (motor-trany ratio = 1.091) so the top speed at 5k RPM : 1st= 23.3 , 2nd= 37.8 ,
and 3rd= 60.5
Total wight of all the componets (frame, wheels, battery, controller, seats, charger) = 780 pounds
I'm getting closer to my max wight target 1000 LBS 
I hope this mator can hack it. 
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Post by elanimal28 on Aug 18, 2014 23:13:33 GMT -5
Added the battery modules. Still need to add the 12v battery on the right hand side. |
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Post by elanimal28 on Aug 23, 2014 22:23:50 GMT -5
Hare's a schematic of the power train:  |
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Post by acerguy on Aug 28, 2014 18:23:53 GMT -5
Making progress! While my plan is to do a moto-based RT, I have to admit that for my use (<5 mile commute) electric would probably be optimal so I like to follow these kinds of builds.  |
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Post by elanimal28 on Sept 21, 2014 16:01:36 GMT -5
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Post by stretchmobileski on Sept 21, 2014 21:59:33 GMT -5
Any issues with bump steer with the relocated steering box?
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Post by elanimal28 on Sept 22, 2014 10:32:19 GMT -5
Any issues with bump steer with the relocated steering box? . I didn't notice any bump steering, but I just looked at it while I had it raised on the towers. I haven’t driven it on street |
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Post by elanimal28 on Oct 7, 2014 17:31:09 GMT -5
So I took it out for a short spin (the video is coming) and that got me thinking about a windshield. My trike’s with is 29.5 inches so I need a windshield about 28 or 27.5 inches in width but obviously I can’t go to the store and pick one up. I am thinking of Buying a regular (the cheapest I can find) windshield and try to cut it down to the size I need. Does anybody have a better solution or Idea? Attachment Deleted |
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Post by elanimal28 on Oct 9, 2014 21:19:38 GMT -5
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Post by elanimal28 on Oct 13, 2014 10:56:48 GMT -5
Making progress! While my plan is to do a moto-based RT, I have to admit that for my use (<5 mile commute) electric would probably be optimal so I like to follow these kinds of builds. I too have short commute, only 4 miles each way. So I started my build with the idea of a solo trike and 15 mile range. Then my son who’s 16 said “it would be cool if you could pick me up from practice in this.” So the plans change. Later on my daughter said it would be cool if I could take the trike for my commute to college when you go racing (because she uses my van to get to school.) So the project evolved from a solo seat- 15 mile range to a dual seat 40 mile range trike.  |
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Post by elanimal28 on Oct 14, 2014 17:03:35 GMT -5
Here is picture of the back. I know it looks just like the front. My plan is to make the top look like a VW beetle or close to a Semicircle. Attachment Deleted . |
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Post by elanimal28 on Oct 14, 2014 18:57:08 GMT -5
Here’s a look at the wood box I made to hold the electrical components. I’m planning to use Plexiglas for a see-through lid. Attachment Deleted |
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