Titan In Frame With Shifter Kit Yes!!

thatsdax · #21 (**permalink**) 08-27-2009, 09:18 AM

With a 23 inch top tube, your left knee will not hit anything. With a normal 20-21 inch top tube length, I do have to turn my left knee out to avoid hitting the motor. Keep in mind , I am 6 feet tall. Shorter riders may get away with a 20-21 inch top tube and not have to turn a knee out to pedal. On my K2, I have to turn my knee out to pedal. This took me 5 mins to adjust to this. A small price to pay for such a wonderful setup. Enjoy the ride...

magna_503 · #22 (**permalink**) 08-31-2009, 12:50 AM

Duane,
i feel like I got shafted!!! you shift kit is sick. Would us rack mount guys ever see a shift kit?

thatsdax · #23 (**permalink**) 08-31-2009, 12:33 PM

Well.. We need to leave a certain amount of kits with no shift kits. Just in case the Government in all its wisdom decides to make shift kits illegal. But.. Since you have the Titan motor, if you ever decide to go with shift kit IF, that would only be a 95usd addition. Enjoy the ride..

SeanKuykendall · #24 (**permalink**) 10-02-2009, 11:34 PM

I am in the middle of putting one together now, I'll let ya know how it goes!

fireball_jones · #25 (**permalink**) 10-07-2009, 04:46 AM

hello all,

this looks promised but i cant help thinking...

in low rpm the motor is at 5000 through that gearbox 5:1 it comes to 1000rpm the drive sprocket the practice small for the gb is 8tooth the crank spocket is (lets be generous) 52t gives us a further reduction of (8t/52t the sprockets) .1538 thus the crank will be rotating at 153rpm (0.1538461538461 x 1000)?

NEAT TIMES · #26 (**permalink**) 10-07-2009, 09:42 AM

Fireball, Hi And Welcome. If I Read You Correct - 52 T Divided By 8 T = 6.5:1 Ratio. Multiply That By The Gear Box Ratio Of 5 = 32.5 Final Ratio. You Could Pop All The Wheelie`s You Wish. To Get An 8 Tooth Sprocket You Need To Go To #25 Chain. 18:1 Final Ratio Is A Starting Point For Most 49cc Engines. HOPE THIS HELPS. RON .

fireball_jones · #27 (**permalink**) 10-08-2009, 05:04 AM

neat times, yes your are correct of the final drive ratio, but as i said, and correct me if im wrong but the pedals are spinning awfully fast. for ideal engine speed with the shown gerabox.

fyi i have a 8t sprocket is size 40 chain (bicycle chain) but its custom

.

HoughMade · #28 (**permalink**) 10-08-2009, 11:06 AM

Front freewheel. The engine does not spin the pedals.

fireball_jones · #29 (**permalink**) 10-08-2009, 01:46 PM

I aware this is a freewhell crank however , imagine this; your engine is moving the bike at a certain speed through the crank (imagine all the mechism insde the latches etc) they will be spinning to fast for us to add any input (assuming they people still like to pedal these things) via the pedals. dont get me wrong i REALLY would like this to work as i think the design concept is good, but im questioning the technicalities. however the best proof is just doing it. so ill just wait.

thatsdax · #30 (**permalink**) 10-08-2009, 02:25 PM

Yes.. Fireball.. You are correct. At the higher speeds, human input is futile. There is no way any human could pedal fast enough to help with power input. But at the lower speeds, human input is feasible. Only at higher speeds, 35-45 mph does it get too fast for any one to keep up by pedaling. Not sure why you would want to help pedal assist at these higher speeds.. 35-45 is not fast enough? so.. You would like to pedal with the motor and push it to 50? Yikes !!