I couldn't stand making one boy watch the other riding, so I caved and bought a DB w/97cc. The little guy is a small 10yr old. No way he can handle the 212cc on the Sensation--I always ride with him. He can handle the DB with the 97cc just fine on his own, though.
Older boy (almost 13) also likes the DB for off-road, so another reason for not putting on a larger engine: I don't need him hitting a pine tree.
But really, this DB is a dog, with the startup chugging. I don't want to spend a lot of money. I have read a LOT of threads. But none really compare the options.
1) Swap the clutch spring for a black one. Cost = 14 plus a pair of snap ring pliers.
2) Sprocket adapter and 78? tooth split sprocket. Higher cost and might limit off-road (wooded area, pine needles). 78 vs. 70 doesn't seem like that much improvement.
3) Jackshaft from Brad. Highest cost, but high quality. About as much as I paid for the DB.
I'm going to add a hydraulic brake, too, since the younger boy is taking a long time to slow down (grip strength?)
Does #3 solve everything? Would it still need #1?
Will #1 get us past the chug-chug problem? Would #2 help it out that much?
The DB is plenty fast enough. I turned out the throttle limit a little and it barely tips 27mph according to Mr. Garmin.
Older boy (almost 13) also likes the DB for off-road, so another reason for not putting on a larger engine: I don't need him hitting a pine tree.
But really, this DB is a dog, with the startup chugging. I don't want to spend a lot of money. I have read a LOT of threads. But none really compare the options.
1) Swap the clutch spring for a black one. Cost = 14 plus a pair of snap ring pliers.
2) Sprocket adapter and 78? tooth split sprocket. Higher cost and might limit off-road (wooded area, pine needles). 78 vs. 70 doesn't seem like that much improvement.
3) Jackshaft from Brad. Highest cost, but high quality. About as much as I paid for the DB.
I'm going to add a hydraulic brake, too, since the younger boy is taking a long time to slow down (grip strength?)
Does #3 solve everything? Would it still need #1?
Will #1 get us past the chug-chug problem? Would #2 help it out that much?
The DB is plenty fast enough. I turned out the throttle limit a little and it barely tips 27mph according to Mr. Garmin.