Powered Push Trailers

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Feb 20 2010 9:10am

From s_t, geared hub-motor, Ping 36V/15-aH battery inside the green gasoline container (waterproof+easy to remove for charging). 27-kph 18-mph

http://endless-sphere.com/forums/viewto ... =3&t=16400

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Feb 20 2010 7:32pm

Last edited by spinningmagnets on Sep 19 2010 8:46pm, edited 1 time in total.

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springsguy   1 mW

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Re: Revisiting a Push Trailer

Post by springsguy » Apr 07 2010 3:25pm

If you haven'y gone to the beginning of this thread, you all might be interested in our site http://electricbicycletrailer.com

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Feel free to contact me directly via Email if you're interested in an E-trailer plan set.
Dave at dmeyers2@comcast.net

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Apr 30 2010 5:22pm

Last edited by spinningmagnets on Jul 26 2010 10:49am, edited 1 time in total.

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Jul 06 2010 9:38pm

From new member "TopCat"

http://motorbicycling.com/f9/bosscats-p ... post162318

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...and from his friend, Decon
16inchPushTrailer.jpg
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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Jul 22 2010 11:09am

This pic is from a non-electric bike blog about a cargo-trailer build. The hitch idea is just too good, had to post it here.

If you slice tubing length-wise, it can make saddles to slap onto the chainstays/seat-stays, and then u-bolts won't crush the tubing even though the ubolts are very tight. The thick aluminum plate is easy to source and cut, and the caster wheel is easily source-able in any size. Large for powerful builds, small for low-power builds to save on weight. Fairly cheap as a new part, fairly easy to find used to save on budget.

http://www.biketrailerblog.com/2010/01/ ... o-trailer/
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amberwolf   100 GW

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Re: Revisiting a Push Trailer

Post by amberwolf » Jul 22 2010 4:01pm

I have seen that hitch before; probably on Sean's blog if he has one) or a post referring to it somewhere on the web. It has several great repurposings in it, all of which I wish I had thought of before I saw it. :)

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Re: Revisiting a Push Trailer

Post by REdiculous » Jul 25 2010 11:30pm

Here's mine now that it actually pushes..
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torker   1 MW

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Re: Revisiting a Push Trailer

Post by torker » Jul 26 2010 9:01am

Here is a question for all that have used a push trailer. I see a lot of hitches that attach at or near the seatpost and also a lot that attach near the rear hub/axle down low. Can you tell me the advantages/disadvantages of each? Especially handling differences. I can see the higher mount trying to "push" the bike over on slow turns or not really a problem?
Dave When I die I want to slide in sideways yelling WooHoo what a ride !

Giant Rincon w rear 9C 6*10 36 v x 20 amps
Specialized FSR Comp 9C 6*10 48v x 30 amps

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Re: Revisiting a Push Trailer

Post by REdiculous » Jul 26 2010 11:05am

You'd have to turn pretty sharp to have a problem....I can do tight circles in the parking lot..

I like the ones that attach at the seat post since they're typically a bit stronger. I think the other style hitch/tongue will bend easier if you overload the trailer.

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Re: Revisiting a Push Trailer

Post by amberwolf » Jul 27 2010 2:09am

The only big problem I have had with my rack-height hitches (like yours, REdiculous) is that unless I can lock the brake on the bike wheels, then when I am parked the trailer can push the bike over really easy. If I had a separate locking brake for the trailer wheels (I will eventuallly) then this wouldn't be a problem.

If I had the hitch down at the dropout level, I'd still have it behind the rear wheel, so I would not have to deal with possible issues hooking the rear wheel on the towbar in a tight righthand turn (assuming the typical leftside hitchpoint at the dropouts).

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Apr 21 2011 7:05am

From BobC (pic will be updated when trailer is complete)

http://endless-sphere.com/forums/viewto ... =3&t=24698
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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Apr 21 2011 7:08am


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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Jul 18 2011 12:11am

"Pusher-Trailer: A Bicycle-Frame Solution" ...by kingfish

http://www.endless-sphere.com/forums/vi ... =3&t=26675
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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Aug 07 2011 1:08pm

It looks like push trailers have finally gone mainstream. The "Ride Kick" is available for purchase.
$730, 24V SLA, Brushed 500W motor, 19-MPH, 12-inch wheels...
http://www.ridekick.com/technology/specifications/
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Whiplash   100 MW

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Re: Revisiting a Push Trailer

Post by Whiplash » Aug 08 2011 2:43pm

Huh, pretty cool!
Power is a fascinating thing, the more you have, the more you want, but the real power is having the restraint not to use it all at once...............Um...Yeah..

The harder you work.....The luckier you get!!

"People who say it can't be done are often interrupted by those that have already figured out how to do it!"

Email me @ currentcycles@gmail.com
OR check out http://www.CurrentCycles.net

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Aug 13 2011 9:02am

A You-Tube of a push trailer by "Tommy L"
http://www.youtube.com/watch?v=Q1qTc4sj ... re=related

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spinningmagnets   100 GW

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Re: Revisiting a Push Trailer

Post by spinningmagnets » Aug 22 2011 5:32pm

From thewmatusmoloki, a great hitch base idea by using a bike handlebar stem
http://endless-sphere.com/forums/viewto ... 68#p451664
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Whiplash   100 MW

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Re: Revisiting a Push Trailer

Post by Whiplash » Aug 23 2011 2:48pm

All these little trailers got me thinking about a range extender for my bike and simply having it in the trailer! Really, a simple powered trailer is a great addition even to an already electrified bike, because it can store so much more battery! Would allow me to take those really long rides I would normally use my gas bike for.... Got me thinking now... 40AH in addition to my 15AH in the bike and I could go almost anywhere! Plus you could make it a simple lower speed design (for touring) and you would have a backup motor too!
Power is a fascinating thing, the more you have, the more you want, but the real power is having the restraint not to use it all at once...............Um...Yeah..

The harder you work.....The luckier you get!!

"People who say it can't be done are often interrupted by those that have already figured out how to do it!"

Email me @ currentcycles@gmail.com
OR check out http://www.CurrentCycles.net

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rearengine   100 W

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Re: Revisiting a Push Trailer

Post by rearengine » Dec 03 2011 10:19pm

I submit the drawing I did to you guys , and ask if you think it would work?? I didn't see any thing in the files quite like this..

Using the front end of a bike , the head tube, fork, and front wheel would work as a caster... Use a front fork to couple to the rear dropouts of the bike ... I think if the head tube is at about 68-70 * angle it should trail with out shimmying .. What do you guys think :?: Lemmy know ... Thanks... Bill
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Rassy   10 MW

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Re: Revisiting a Push Trailer

Post by Rassy » Dec 03 2011 10:44pm

Your drawing looks nice, but I have two "negative" comments:

Some of us have found that a very short trailer does tend to wag the dog a bit, particularly at speeds over 20 MPH. Your geometry might correct this problem.

Also, you don't seem to have a convienent place to carry batteries on the trailer. The batteries should be low to help control any wagging, and the extra weight helps with traction.

You really only find out be doing it. Good luck. :D
-Rassy-

Two Delta Trikes equipped with a Bafang BBS02
viewtopic.php?f=28&t=88536&p=1291260#p1291260

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rearengine   100 W

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Re: Revisiting a Push Trailer

Post by rearengine » Dec 04 2011 9:05pm

Thanks Rassy for the info on trailer being to short maybe to handle well ... I was thinking of putting the bats on the bike rack.. Guess I best lengthen the trailer and put them on it .. like you say the way to find out if it works is to build it ... good winter project ... Bill

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Re: Revisiting a Push Trailer

Post by amberwolf » Dec 05 2011 2:37am

Definitely better on the trailer than the rack; the weight up high on the rear of the bike will affect handling probably negatively, but on the sides of the trailer like panniers, or better yet between tire and hitch like a BOB trailer would be much better.

Weight on the pusher trailer wheel is a good thing, since you need traction, and there's very little weight on it compared to the bike. Without enough weight on the pusher wheel, it may just just spin and lose traction especially from a stop, if it is the only thing trying to push the bike forward.

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rearengine   100 W

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Re: Revisiting a Push Trailer

Post by rearengine » Dec 05 2011 3:51pm

my pictures (Custom) (2).jpg
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Amberwolf .... Something like this maybe ... 36 volts of lead acid weight might be good for something after all ... thanks for the advice Bill

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TopCat   100 W

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Re: Revisiting a Push Trailer

Post by TopCat » Dec 05 2011 9:20pm

rearengine wrote:I submit the drawing I did to you guys , and ask if you think it would work?? I didn't see any thing in the files quite like this..

Using the front end of a bike , the head tube, fork, and front wheel would work as a caster... Use a front fork to couple to the rear dropouts of the bike ... I think if the head tube is at about 68-70 * angle it should trail with out shimmying .. What do you guys think :?: Lemmy know ... Thanks... Bill
I made a monowheeled trailer a couple of years ago and tried the wheel at the back using a head tube (Sorry but I didn't document/pics at the first try with the headtube at the rear) the trouble is (I found anyway) the wheel will snake/shimmy. The faster I went the more the wheel snaked back and forth, I even loaded up the trailer with a pile of old bricks but weight didn't solve the problem. I reverted to the old tried and tested method of the pivot behind the rear wheel and a static trailer wheel.
You may have better luck with your design, fingers crossed :wink:

Regards
Tom
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I started off with nothing and I still have most of it left.

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