My life with Python trikes Mk1 , Mk1.5 , Mk2 ?

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That trike isn't going to win slimmer of the year with 1/4" plate.
The tubing is a little oversize for the front anyway and the 1/4" plate is quite small maybe 2 of 2" x 2" so nothing to fret over.

This really is just an experiment to look at better ways to build the front end , compared to the Mk1 and better ways to mount rod end bearings for the pivot.

Paul
 
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Well made plenty of progress however the image host was down for maintenance so was unable to post anything.



the rear frame is spaced above the floor 5" [ it's running height ] and the pivot is now welded to the front part and we are whole (y)

The pivot needs a minimal amount of clean up with a hand file some bits were left over long to discourage burn back at the edges and a couple of the welds are untidy , there will be no filing down to hide them just take any high spots or sharp bit's off.

Contrary to what I have just said , you can see I ground the upper pivot plate down to a fine finish , I needed it to sit on some plate to mark the cut for the 2 x 6mm pieces



As you can see all looks neat and minimalist , especially compared to the Mk1 front in the image below.



Of course the Mk1 is ready to run so has wires/cables/changes/brakes etc etc etc



Angling the end beam was a change of plan and I would have liked the rearward facing side frame pieces to be about 6mm longer than they currently are however should get away with this I think ?

So lots to do , bars up next and a front mech post , I may not mount a mech however on the Mk1 it is indispensable for attaching things and moving the whole trike about. :whistle:
 
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Just to add some pressure to the soft southern wuss who is also building a delta :-



Added some hub brake mounts to the rear of the previously unbraked Mk1 rear end.



As this is a test mule the rear end was adapted to be bolt on , then I can use the same front/spine to try out different rear ends ?
Suspension / iLean & tilting etc



The mount consisted of some capped offcuts of 1.25" tubing I drilled them out for 12mm then enlarged one hole in each part to 14mm so I could add a anti crush tube just tacked in 4 places on the face it passes through.

Not sure which way around it will end up ? trailing wheels/leading wheels [ only about 3" :D ]

The wheelbase is about the same 46" as the Mk2.

Lots more to do , however progress is progress and the to do list is reducing slightly .......
 
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Looking good from a Southern-Wuss perspective for sure. ;)
 
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What is the pastime? Trying out different rear ends?
Well ....

Currently yes !

Do I need suspension ?
Is leaning the answer to higher seats ?
Is iLean really leaning and a form of suspension in one package ?

Can I live with any of them ?

You could either pontificate till the cows come home ...

Or build a test mule and then comment from experience ?
 
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SJ

Thanks

Did you not borrow a Delorian and fetch some bicycle related item into our future from the past ?
 
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Most of my group riding involves being last, or it did when group riding was allowed. I have got used to seeing virtually nothing other than rear ends.
It is not always bad being at the back ?



Although sometimes it can get a bit dirty ?

 
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So little brother gets dragged screaming and kicking into the light ?



Not ridable yet however we have a new 20" 7 speed wheel and a set of 170mm cranks with 2 rings [ will do for now ] relieved to find even with straight cranks I have enough clearance ..



have sat on it and can pedal although the seat is further forward than the other trike , I think the pivot takes up a bit more space.



the front frame near BB only looks long [ I think ] because there is no mech post yet.

This may be a solution to the handle bars , with a bit of cutting and shutting ?



..and don't do this at home kids ...



what happens when there is no lock stops :ROFLMAO: try and out turn this you tadpole pilots :D
 
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Super stuff Paul, looks almost ready to rock & roll.
 
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what happens when there is no lock stops :ROFLMAO: try and out turn this you tadpole pilots :D
If the rider turned with that level of turn they would have to re-locate their hip joint when they straighten up again. :ROFLMAO:
Looks really sharp Paul, I bet you can't wait to give it a spin.
 
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Thanks both.

You know the drill the last 10% takes 90% of the time ;)😁
 
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So I decided to join the SSW and have chain interference problems.



This is in the lowest sprocket on the cassette and the middle ring at the front.



So is this bad ?



Well originally this was intended for a IGH and they all have large drive sprockets so that may fix it.
The IGH wheel is not currently trued of tensioned , something I should attend to.

Also as can be seen the front rings are offset away from the BB , so maybe some with 0 offset may get me a bit more clearance.

So plenty to do.

However a more pressing problem is the fact that I have never trimmed the 2 front plates that the BB is set in , this now stops the wheel going in as the axle cannot clear the derailleur , they just need trimming.

However I have ridden it !!!

Don't do this at home children.

So brakes are optional [ a pair of riggers gloves will stand in for them ]
No handle bars
No gear changes
No mirrors etc etc etc

Seems stable and turns well , although I need to add some bracing to the bolt on rear end , judging by the tyre noises I thing the tracking is out.
Hey I have created a delta trike with tadpole problems 😭

all for now :D
 
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Everything is fixable, angry-pixies, hot metal and a grinder.
The cassette width is probably the issue as you didn't build it for that but for your IGH wheel.
You might get the same derailleur issues I have had with the IGH. But your frame is simpler and may be less finicky.
 
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