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Re: 50mm Big Bore Elite S Build

Posted: Thu Dec 09, 2010 11:26 pm
by Trafficjamz
sum-azn-kid wrote:75mph with 215lbs rider wow. if i rode it i think it would left off the ground..105lbs. wat bore/crank you went with for stroker?

43.4mm ministroke on 50mm bore all Taiwan :smile:

zx trans 667 18 30 belt 1mm shim.

wow 105 lbs :surprise: you wanna come to michigan and pilot a drag bike for me?

Re: 50mm Big Bore Elite S Build

Posted: Thu Dec 09, 2010 11:36 pm
by sum-azn-kid
haha i gotta grad highschool first... oh my bad i meant the BIG stroker haha or is that secret secret :wink:

Re: 50mm Big Bore Elite S Build

Posted: Thu Dec 09, 2010 11:43 pm
by Trafficjamz
Oh the big one :wink:

52.6mm crank x 54mm bore

Re: 50mm Big Bore Elite S Build

Posted: Thu Dec 09, 2010 11:52 pm
by sum-azn-kid
nice is that the ruima setup? i rode oen of those. was pretty good. but 107 (51mm fm round and 52.6 ruima crank) and 114 (52mm pg bore and 52.6 ruima crank) smoked it... how come you never went for the 130 monster haha?

Re: 50mm Big Bore Elite S Build

Posted: Fri Dec 10, 2010 12:01 am
by Trafficjamz
sum-azn-kid wrote:nice is that the ruima setup? i rode oen of those. was pretty good. but 107 (51mm fm round and 52.6 ruima crank) and 114 (52mm pg bore and 52.6 ruima crank) smoked it... how come you never went for the 130 monster haha?
To pricey for me :wink:

we are trying to get under 10 seconds in the 1/8th mile.....I think 120 cc is enuff :smile:

Re: 50mm Big Bore Elite S Build

Posted: Fri Dec 10, 2010 12:10 am
by sum-azn-kid
haha yups 120cc will do that. btw did you end up running that ported block you psoted up a while back? i tried to do some porting myself too tell me wat you think. thanks and good luck at the races :thumbsup:

Re: 50mm Big Bore Elite S Build

Posted: Fri Dec 10, 2010 12:14 am
by Trafficjamz
sum-azn-kid wrote:haha yups 120cc will do that. btw did you end up running that ported block you psoted up a while back? i tried to do some porting myself too tell me wat you think. thanks and good luck at the races :thumbsup:

There is over a foot of snow here in Michigan now:sad:

No scooter riding 'til about april or may :wink:

Big builds going on at trafficjamz for the next couple months :thumbwink:

Re: 50mm Big Bore Elite S Build

Posted: Fri Dec 10, 2010 12:22 am
by sum-azn-kid
i've never seen snow b4... wow that long before you can ride. id go crazy. any way getting off topic.
cant wait to see what you have in store magic stick action haha

Re: 50mm Big Bore Elite S Build

Posted: Fri Jan 21, 2011 2:12 am
by Trafficjamz
sum-azn-kid wrote:i've never seen snow b4... wow that long before you can ride. id go crazy. any way getting off topic.
cant wait to see what you have in store magic stick action haha

Bustin' out the magic stick for some port work.
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Re: 50mm Big Bore Elite S Build

Posted: Fri Jan 21, 2011 5:37 pm
by bakaracer
Hey how wide is that port at its widest point?if you go more than 72% of the bore size you risk ring damage.

Re: 50mm Big Bore Elite S Build

Posted: Fri Jan 21, 2011 6:03 pm
by Trafficjamz
bakaracer wrote:Hey how wide is that port at its widest point?if you go more than 72% of the bore size you risk ring damage.
the exhaust port is 35.56 mm wide :2thumbs:


72% of bore size :confused: 50mm diameter * .72 = max.

Re: 50mm Big Bore Elite S Build

Posted: Fri Jan 21, 2011 6:22 pm
by bakaracer
Now you need to widen the transfers.if you have a dental tool with the 90deg head you can get in there good and shape thhe port so it points towards the middle to back of the piston.very hard to do with a regular dremel and bits. Scratch a few bores trying.that's how I know.

Re: 50mm Big Bore Elite S Build

Posted: Wed Jan 26, 2011 4:34 pm
by Trafficjamz
More port work pics. The exhaust port is sooooo smooth now :love:



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Re: 50mm Big Bore Elite S Build

Posted: Wed Jan 26, 2011 5:05 pm
by Trafficjamz
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Re: 50mm Big Bore Elite S Build

Posted: Wed Mar 23, 2011 8:54 pm
by SpreeMadness520
Trafficjamz wrote:
Dakine wrote:So when is this motor gonna get some action? What speeds you plan on hitting?

I am not sure about top speed.

I am trying to to be quickest isn the 1/8th mile drag race. maybe 11-12 seconds or so. Track opens in april.
With me that thing is going to take off like the space shuttle..haha