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How much angle or curve needed for bike trailer tow-bar? Answered

I want to make a trailer for my bike, but am confused about all the various types/styles of D.I.Y. tow-bars I see being made/used...how does the curve/bend of the tow-bar affect whether the trailer will track correctly behind the bike? If the trailer does not track correctly behind the bike then the tires will be ruined over time, and it will cause more 'drag' (harder to pull).

I understand that the tow-bar needs to be able to clear the bike's back tire when turning, but if I put the wrong angle or curve in the tow-bar will it cause issues with keeping the trailer straight behind the bike and tracking properly?

So how does someone determine the correct angle/curve of the tow-bar, besides trial and error and possibly wasted materials? Thank you for your time and assistance.

Discussions

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Toga_Dan

8 months ago

If the trailer wheels are parallel to one another they shouldn't scrub. If the trailer tongue is a bit misaligned, the whole thing will track right or left a bit.

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Toga_Dan

8 months ago

Can't hurt to look at what's on the market Already. If it has been sold in mass, then it has been tested.

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BsrlinToga_Dan

Reply 8 months ago

Good advice. I think that after spending cpl. weeks looking at dozens and and dozens of DIY videos, guides and pictures I 'd reached a point where I was 'over-thinking' it, and just need to get started with basic mock-up and adjustments/modifications can be made as I progress.

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rickharris

8 months ago

I assume you want a saddle pillar mounted, I don't think it matters much as long as the trailer arm is free to pivot so the trailer can follow as it wants, the trailer wheels must be parallel to each other and parallel to the center line.

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Bsrlinrickharris

Reply 8 months ago

I'd read comments in various places that advised to keep the hitch-point as low as possible, for safety/handling concerns, so I was looking at hitch-point being on the side...but the more I look at the various set-ups that others have used I am leaning more towards something that will be attached directly behind the rear wheel, similar to the commercially produced BOB Ibex trailers, but wanting to make my DIY version with two wheels:

Sample trailer.jpg