50mm Big Bore Elite S Build

[Trafficjamz]

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

zx trans 667 18 30 belt 1mm shim.

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

[sum-azn-kid]

haha i gotta grad highschool first... oh my bad i meant the BIG stroker haha or is that secret secret

[Trafficjamz]

Oh the big one

52.6mm crank x 54mm bore

[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?

[Trafficjamz]

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

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

[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

[Trafficjamz]

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

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

No scooter riding 'til about april or may

Big builds going on at trafficjamz for the next couple months

[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

[Trafficjamz]

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.

[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.

[Trafficjamz]

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


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

[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.

[Trafficjamz]

More port work pics. The exhaust port is sooooo smooth now

[Trafficjamz]

Before

After

[SpreeMadness520]

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