Not sure I am fully following GearNut. (but on 1st cup of coffee, lol) can you post a link or a pic to what yer thinking?
Yeah thats true, I'm thankful my local bike shop isn't threatened in any way by the motorized bikes, he does stress that it would be a good idea to use better quality bikes for these projects rather than the el-cheap-O's, he just said he sure would hat eto see someone get hurt because of a failure from a broke axle or something like that.
Hope that fixes your issue, Man I really wont a shifting bike.....and I'm gonna have one before long, I've got 2 Sturmey Archer 3sp Hubs and one SunTour 3sp hub.......and I'm thinking this bike in the pic below will make a nice shifter set up since I dont think I can mount a sprocket on that wheel since the 3 spd hub is so much larger than the standard coater hub.I replaced the engine's 62t chainring sprocket to 72t. That lowered my total gear ratio from 32.46-24.82-21.96-19.09-16.23-14.32-12.41 and 10.5:1 in eighth gear...
to 37.08-28.37-25.09-21.82-18.55-16.36-14.1 and 12:1 in eighth gear.
The gears are closer in ratio now, with an extra gear between first and second gear. There is still a big gap between first and second, because first gear is the stump-pulling, up-the-ramp gear. Now, instead of using only five gears, I can shift down to sixth gear and still be pulling hard.
This is all theoretical, but I'll find out when I commute to work.
I took it for a test ride yesterday, but couldn't see a marked increase in performance yet. The first few gears might've been a bit snappier. I'm having issues with the drivetrain, due to this sprocket swap. I need to address these problems before doing a series of comprehensive testing.
The bicycle chain jumped off its 30t chainring sprocket, a mile into the test ride. I was doing 30 mph on flat ground. There have been some clunks and clanks coming from the bottom bracket area, more than likely due to the sprocket swap. I used new sections of 8mm(T8F) pocket bike chain to lengthen the engine drive chain. I MIGHT have reinstalled the 30t bicycle chainring sprocket bass-ackward. I don't remember which way the sprocket's "dish" was facing. Relying on memory, the bicycle chain is now a fraction of an inch inward. This is noticeable in 8th gear. I recall that the bicycle chain used to contact the outer edge of the front derailleur. Now it's maybe 1/8" inward, towards the front derailleur.
The sprockets will be removed & reinstalled today. Hopefully, that should clear all of the issues.
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Honey, it's just a bicycle. and i REALLY need it to excercise, and to ride it to work.(hehe)
They been redoing the roads here around where I live today.......these are dirt roads and the county is putting down some new base material and wetting it down and packing it, since I dont have fenders on my bikes I figured I better wait for the ground to dry a bit before I go out for an evening ride, dont need mud all over me and/or the bike........I put some gas in, and rode about 60 miles round trip. Then rode another 30 miles to a friend's house and back. That's about it. Runs great, no problems
it was 109F yesterday, that's getting warm...
Yep, my outside thermometer is dead on 116 degrees in the sun and the humidity inside my home is 82% and I have refrigerated central air which actually dries the air out if that tells you anything about what the humidity is outside, that is what hurts us around here, the heat is bad but when we get the humidity along with it it really hurts then.
The vids would be great.......but would just make me jealous of the beautiful green country side and the pleasant temps when what we have here right now is very hot, not so green conditions things are burning up around here from this heat and lack of rain.......getting pretty bad.
I guess the small vendors on this forum don't do custom clam-shell adaptors? Someone here used to offer that service.
Sounds great thanks for the info. here, Ididnt know exactly how the gearing played out on one, I have 2 bikes that have 7 gears on the rear wheel instead of eight but I fih=gure if I dont like the 3 spd set up I'll just change over toone of them in its place and put a simple Derailleur on it off one of the other old bike I have sitting around or just get a new one from my Local Bike Shop.I guess the small vendors on this forum don't do custom clam-shell adaptors? Someone here used to offer that service.
Yep, shift kits work well in my situation. I have a LOT of impatient car drivers around me in traffic, especially rush hour. If you're slow, especially from a standing start, they're quick to blow their horns.
To put the cassette's overall gear ratios into perspective,
first gear is like a Happy Time 89-tooth single sprocket;
second gear = 68t sprocket;
third gear = 60t sprocket;
fourth gear = 53t sprocket;
fifth gear = 45t sprocket;
sixth gear =40t sprocket;
seventh gear = 34t sprocket;
eighth gear = 29t sprocket.
So using a 40t HT sprocket is like pedal-assisting in sixth gear on a bike with a shift kit.
Shift kits are easier on the clutch too.
