E-Bike trailer

agniusm

1 MW

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Apr 16, 2011

Messages

2,577

Location

Lithuania, Zarasai

• May 20, 2014

• #1

I want to build myself a wee trailer to get some stuff haulin'. i got some wheels off the wheelchair to find out the wheels are of some strange size. I have checked it against 20" maxxis tire and the rim is larger. So i assumed that it is 22" and bought some tires and tubes just to find out that they are too large. WTF. I have inspected the rims and there is marking: Rigida 20x1 3/8. My question so far is what efing tires i need to get?

 

Drunkskunk

100 GW

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Apr 14, 2007

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7,244

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Dallas, Texas. U.S.A.

• May 20, 2014

• #2

Tires with fractions are a totally different ISO size from tires with decimals. Its weird, but just how it works. a a 20" X 1 1/4" (ISO 419mm) is a different rim size from a 20" X 1.25" (ISO 406mm) So search for tires with fractions in the size.

Wheelchair rims are all based on the fractional size. Here's the first I found. http://enableyourlife.com/20-x-1-3-8-in-37-451-wheelchair-street-tire.asp

 

gogo

1 MW

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Mar 17, 2008

Messages

2,492

Location

Iowa USA

• May 20, 2014

• #3

This reference seems comprehensive:
http://sheldonbrown.com/tire-sizing.html

I have a similar issue with 16" tires.

 

agniusm

1 MW

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Apr 16, 2011

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Lithuania, Zarasai

• May 20, 2014

• #4

Yes, i have read Sheldon Brown. So i can safely assume that it is 451mm and that this tire: http://imenza.eu/shop/item/498 will fit?

Thanks guys

 

agniusm

1 MW

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Apr 16, 2011

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Location

Lithuania, Zarasai

• Jul 13, 2014

• #5

Finally i got required tires so began my trailer build. Most of the work completed, need to make the tow bar and hitch, do some lid gluing to shape it:

Sketch:

Materials cut, 25x25x1.5mm:

Welded:

Balanced pretty well:

Marine plywood panels cut:

Al angles:

Started assembling:

More soon..

 

agniusm

1 MW

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Apr 16, 2011

Messages

2,577

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Lithuania, Zarasai

• Jul 15, 2014

• #6

Finished framework:

Painted:

Hitch:

Box:

 

agniusm

1 MW

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Apr 16, 2011

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2,577

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Lithuania, Zarasai

• Jul 16, 2014

• #7

Almost done..:

 

W

WhatcomRider

100 W

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Apr 7, 2012

Messages

117

Location

Bellingham WA - USA

• Jul 16, 2014

• #8

That's a work of art. Thanks for sharing.

 

H

heavymetalthunder

100 W

Joined

Oct 7, 2013

Messages

185

• Jul 16, 2014

• #9

Very nice job. Just be mindful of power usage. I also built a trailer for my E-bike also using wheels I got off of a wheel chair, trailers draw a bit more power than you would suspect. I recommend using a watt meter.

 

T

tahustvedt

10 kW

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May 26, 2014

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595

Location

Northern Norway

• Jul 16, 2014

• #10

Beautiful trailer.

 

agniusm

1 MW

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Apr 16, 2011

Messages

2,577

Location

Lithuania, Zarasai

• Jul 17, 2014

• #11

Thanks guys, appreciate it. I can tell that it will draw more, tested it on grass, human power only My build in progress bike should suffice, I will have1.5kw of battery on board for 30km round trip a day.

 

Drunkskunk

100 GW

Joined

Apr 14, 2007

Messages

7,244

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Dallas, Texas. U.S.A.

• Jul 17, 2014

• #12

Absolutely amazing.

Are you going to go with a rigid cover for it, or something that can roll up? The illustrations look like segments of a roll top desk.

 

agniusm

1 MW

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Apr 16, 2011

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2,577

Location

Lithuania, Zarasai

• Jul 17, 2014

• #13

It will be hard top. I done curved sides just to play with thin plywood sheets and try glue bend them:

Tested it on the bike. All seems fine:

 

agniusm

1 MW

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Apr 16, 2011

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2,577

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Lithuania, Zarasai

• Jul 17, 2014

• #14

[youtube]KI43xcgWho4[/youtube]

 

T

TotalConfusion

100 W

Joined

Oct 18, 2013

Messages

208

Location

Central Coast NSW Australia

• Jul 17, 2014

• #15

Very nice Trailer indeed, Ive been looking at building myself one also and got a little inspirration from this guys build i found on the Web.

I really like the way he has used the Copper sheeting, Thought you may like this also.

 

agniusm

1 MW

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Apr 16, 2011

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2,577

Location

Lithuania, Zarasai

• Jul 18, 2014

• #16

That one looks nice. Hes is more aero, I thought to make it to lower at the front(reversed) but went for the looks

 

Modbikemax

1 kW

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Jul 15, 2014

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453

Location

Perth Western Australia

• Jul 18, 2014

• #17

Nice work. If it's worth doing its worth doing well. The laughter from the kids makes it all worthwhile.

 

gogo

1 MW

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Mar 17, 2008

Messages

2,492

Location

Iowa USA

• Jul 18, 2014

• #18

Modbikemax said:

Nice work. If it's worth doing its worth doing well. The laughter from the kids makes it all worthwhile.

Click to expand...

We become restrained as we age, no? We say "ebike grin" when, more accurately, our internal dialogue sounds like your kids. Thanks for posting this, agniusm.

 

agniusm

1 MW

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Apr 16, 2011

Messages

2,577

Location

Lithuania, Zarasai

• Jul 23, 2014

• #19

Bent the wood for the trailer, its cut down to size, edges routed and lacquered, need to get fixings :

 

agniusm

1 MW

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Apr 16, 2011

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2,577

Location

Lithuania, Zarasai

• Aug 9, 2014

• #20

[youtube]bfxOa3RsBKA[/youtube]

 

T

tahustvedt

10 kW

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May 26, 2014

Messages

595

Location

Northern Norway

• Aug 9, 2014

• #21

Superb job. Looks great.

 

K

Kvno

100 µW

Joined

Jun 28, 2014

Messages

8

• Aug 28, 2014

• #22

Nice build! You could install two additional dampers on the other side of the lid, so that the kids can ride along in the trailer, but protected against the rain/sun. Lid and roof at the same time!