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Kimjon's evolution of the drift trike


Kimjon

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With some of the mods I'm doing, more air will be entering the motor. I geeked out and read up as much internet information as I could find on the topic.

Solution, drill the main jet out from a factory 0.72mm up to 0.94mm. Actually 0.90mm was the recommended...but I didn't have a drill bit that size, so 0.94mm it is.

IMG_20171202_132558.thumb.jpg.d8b7523f7de9b4c0430147bab61197b1.jpg

I guess if it runs super rich, I'll look at swapping out the carb for a mikuni or similar. But I'll cross that bridge if I need to later on.

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The throttle linkages are a mess on these. They are reliant on the governor and when that's removed they flop about.

I got it functional, but it looked untidy. So I cut it up and reshaped it:

 

Before (functional...but pugly)

IMG_20171202_143000.thumb.jpg.4b71f16031655bf7518b521a01c9b0cd.jpg

 

 

And after (still ugly, but better)

IMG_20171202_155412.thumb.jpg.258b9207766cd24bcad5609a1bb00c8c.jpg

 

I'll paint it and see if it "disappears". If not and it still annoys me, I'll mill one up out of alloy.

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Normally the valve cover vents into the air filter and any dirty oily blow by is fed directly back into the motor and burnt in there.

I removed the stock airbox, so had to come up with a solution.

Option A: do nothing, vent to atmosphere. But end up with oil everywhere.

Option B: run a line, dump to ground like an early motorbike would. Fine on the road, not so cool on your own nice concrete driveway.

Option C: run a catch can like a race car would.

 

So in true style I elected for the most complicated solution (Option C). And rather than spending around $70 to buy one, i further complicated it by making my own scaled down version on the lathe.

IMG_20171203_112137.thumb.jpg.67e4106fc2a4ef33befb15c70f9b6737.jpg

Bracket:

IMG_20171204_134105.JPG.81c2ed16235470e2e0cfa59108b0fc57.JPG

Mounted loosely in position:

IMG_20171203_112725.thumb.jpg.0d9f07796f46d51ff174cb0e4339ab1b.jpg

It's loosely bolted there for now, and missing the sight tube (4mm clear pneumatic tube, will allow visual of oil level in the catch can)...but looks the part.

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Working on the brakes. It has a huge drum in the rear and a disc up front. May as well make use of what's there...so here goes:

 

This random selection of bits I found/made should almost do it.

IMG_20171215_202808.thumb.jpg.4b8f02b9d49043dd145d1838ea7623bc.jpg

Should be becoming clearer now

IMG_20171215_202851.thumb.jpg.bcdde9d9720bc351247678ac32fdc0f6.jpg

So a cable will go around the groove in the "roller" on the bolt. The other bolt has a 3mm hole in it and the cable will double through it and once tightened should lock the cable.

More pics later.

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I removed the external threaded conduit as well. The internet is full of over complicated solutions for blocking the hole it leaves...this is what I did:

IMG_20171216_120339.thumb.jpg.a8603dbb45cece45f6319f0d5a5feed1.jpg

Installed:

IMG_20171216_121316.thumb.jpg.2bbb785c41e793a28bc7c93cb861bd80.jpg

I did shave about 3mm of the bolts head, just to aid clearance as it was a tight space. If I'd gone for a slightly shorter bolt that would have solved this issue too...but I have a lathe...so quicker for me to take it off that end.

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Quick scrub up with wheel cleaner, YouTube recommended...maybe the usa brands work, mine was no better than say dish washing liquid? But the oil is gone, so it's better than before:

IMG_20171216_100814.thumb.jpg.181b7ab7c167b99a36097947e43cf3ee.jpg

Then, replaced the shitty old valve cover:

15133878138192019366195.thumb.jpg.0b56533f168f8105697a582858765b6f.jpg

And its now starting to look the part.

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The axle has a certain amount of adjustment in terms of a chain tensioner. But Murphy's law...the way I mounted the motor landed on a half link.

Now getting a #35 half link is like trying to find a unicorn in nz. However this should do the trick:

IMG_20171216_175344.thumb.jpg.14bbf94776a63a6e238d2d6decbd0e20.jpg

 

And yup, it sure did...worked out perfectly!

IMG_20171216_175554.thumb.jpg.9de813c0bb35fa421dde69cc8d385891.jpg

 

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