[python] Re: Building a cargo style trike

  • From: bepb <bepb@xxxxxx>
  • To: python@xxxxxxxxxxxxx
  • Date: Thu, 12 Sep 2013 23:09:10 +0200

Hi Paul,
welcome to the python mailing list!

Question 1:
I have rear breaks on my python trike, but actually never use them. They are pretty ineffective compared to the front break and also can't be used to support the steering. On a python two wheeler, I find the rear break great to control the speed on fast descents. With the trike this is spoiled by the agitation caused by small differences in the breaking power between the rear wheels.
The only break I actually use on the trike is a coaster break in the front wheel, which is pretty effective in this configuration. Be careful to keep the bike strait with you legs if you break hard with the front break, otherwise it might fold! 


Question 2:
Why not? Just take care that the spanners are secure! Alternatively you could just have two rear parts or two mounting points for the rear wheels on the frame.
If the wheelbase is to short you might also have problems with the front wheel slipping on steep climbs. 
Having to put load behind the rear axle makes it even worse.

BR
Gerald


Am 10.09.2013 17:33, schrieb Paul Needham:

Hi all
Short intro , I am recently retired @ 58 been riding recumbents 2 & 3 wheels for 6+ years live in the UK and do a little TIG welding.
I currently ride a Hase Kettweisel a capable trike but with a few niggling problems and for my needs a few shortcomings ?
So I am looking to build myself a replacement that addresses some of the above. 

I want to :-
Be lower than the Kett it has a seat height of 15" [ 38 cm ] and a BB height of 19.5" [ 49 cm ] yet it's ground clearance is only 4" [ 10 cm ] 
Be shorter if possible , certainly when not in load carrying mode.
Get rid of all that flapping chain
Have the ability to carry camping stuff like the Hipparion Protohippus 2
I quite like Ed's RedTrike as can be seen on the Python trikes page it looks very simple and uncluttered and he has been most helpful in explaining how and why it was built that way.
However carrying lot's of camping gear will require my trike to be build slightly differently to Ed's so I have some questions that I want to ask here ? 

Question 1
Would I need rear brakes ? I assume my camping load will be about 35 kg I weight about 70Kg ? By law I need 2 brakes so I will probably put 2 on the front wheel [ 20" wheels all round ] The Kett only has 2 rear brakes , however weight distribution is completely different to the Python 

Question 2
Wheel base , Ed admits his would be better a little longer [ but he needs to get his inside a vehicle and so has to be that short ] the Hipparion has a WB of 1 metre and I can build Ed's to that length easily enough. I wondered whether to make the rear length adjustable with just a couple of spanners like this ?
[url=http://postimage.org/][img]http://s20.postimg.org/hm59dl0zx/rear_end_extending_sm.jpg[/img][/url] 
[url=http://postimage.org/app.php]screenshot captor[/url]

I hope the link works I am new to this image hosting stuff.
So in normal use it would be 1 metre but when camping [ maybe only 2 or 3 times a year ] I could lengthen it ? I think my camping gear may be bulkier than Esko's and so could do with an extra 30 - 40 cm 

thanks for you help Paul

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