Engine opinions/Vendor question

[OgrePyle]

Hey everyone!

I am about to start my first project bike (exciting!) I'm going to be putting a 66cc kit on a Micargi General, with the hope of eventually trying to dress it up like and old "42 indian military bike. So here's the question of the hour: Where the F*** should I buy my motor from? I've seen quite a few people say they like rose326a on ebay, and some other folks swear by the grubbee kits. I suppose my follow up question, and the one that prompted me to start an account: Has anyone bought anything from bicycle motor works? Opinions? I'd specifically like an opinion on https://www.bicyclemotorworks.com/store/products-page/performance-bike-engine-kit/#.U8FTpvlr5Jk . I'd appreciate any and all opinions, though I am firm on going with gas. Thanks in advance!

 

[HeadSmess]

i hate the 66. pos pos pos.

skyhawks are nicely made but the parts seem non-interchangeable. at least in my experience with the 48cc.

every thing else is based merely on how much you wanna spend for the same thing...


as for your link. buy one. tear it down. document it. compare it to a normal one. turn around and sue the guy for false advertising. cus he must be working for nothing if he can sell them with these internal mods without raising the price tremendously... i wont do it for less than 50 an hour and there you go, already costing you an extra 200 or so... porting takes time.

 

[HeadSmess]

its really interesting that this pic



appears to show the exhaust port on the cylinder, with the nicely "port matched"...um...intake manifold in his hand?? well, ok, its matched when its on the desk, but um...it bolts to the other side of the cylinder... not to the exhaust port. studs arent even the same distance apart.


show us REAL porting, where the transfer ports are changed, and to exactly what angles and degrees open time... etc etc etc.

go figure. some businesses run on the principle that a fool is born every second. they are

 

[HeadSmess]

compare the "tuned" exhaust in this pic




to a REAL tuned exhaust in this pic...



see any difference? i cant!

or maybe....note the 9 holes in the sprocket when most 24" wheels (he says it will fit 24" bikes!) use 32 spokes, which require 8 hole sprockets...


stock CDI unit it would appear.

im yet to find a cylinder with paint INSIDE.

in fact, i avoid any engine (other than a skyhawk) that has been painted at all...

now, i really do deserve a commission i reckon

 

[HeadSmess]

and finally,

why remove the paint from the top of the cylinder, then fail to remove it from the bottom of the head, not too mention why hasnt the sealing face of the head been machined/lapped down flat anyway?

as illustrated here...




oops.


change that. the sealing section on the head HAS been machined down a bit. i wasnt looking close enough... my bad

ignore everything i said

 

[OgrePyle]

Wow. Ok then. You just picked that right apart, and I thank you for it. I guess that makes my decision on where to get my motor a bit easier. I'll just pick up one of these: http://shop.jakebike.com/Hawk-GT-5-66cc-2-stroke-engine-kit-1.htm

 

[Fabian]

Make sure you get the 66cc engine from the start, because if you get the 48cc engine, it won't be long before you realise your mistake, and then have to buy the 66cc engine.

 

[HeadSmess]

shove the 66 in the bin because my 48 will whup it, whup it, and whup it some more

 

[Fabian]

shove the 66 in the bin because my 48 will whup it, whup it, and whup it some more

Let me search for the face-palm emoticon, because this reply warrants it...

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Nope, i can't find the face-palm emoticon so this will have to do with respect to the above quote

 

[HeadSmess]

well, i got home from work, opened my email, turned round, grabbed the cam, walked out the door, and made this...



then murphy struck :wacko: better now than tomorrow morning i guess...


inch: usual story, isnt it?


posted it anyway


lets just say that particular engine is stock standard, unopened, is a 48cc zbox (australian supplier) and has outlasted, so far, two frames, shortly to become three, with nothing more than a crank seal needing replacing

and now a screw on the clutch cover cus thats the answer to the slippage :wacko:


said it before, say it again. i had one 66. i have had several 48s. i choose the 48 for a reason...

(and all my dead 48s are due to unavoidable issues such as piston ring locating pins destroying newly ported cylinders...why THIS engine remains UNOPENED!!!)


all in the exhaust mate, its all in the exhaust


if i wanted to drag dead horses up steep hills so i can flog them, id run a 48T or 55T on the rear, and go back to an MTB frame. currently, i need to get from A to B relatively quickly...

this did prove i needed a new rear tyre, preferably a heavy one rather than what came fitted when i got the frame from, well, basically, the side of the road...


though i really do love the smiley i really do!

i blame the broken bracket on poor mounting design, a known risk i chose to take!