Any 3 wheelers on this forum?
08-31-21, 10:02 PM
#26
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Oh, yea, one wheel drive stinks. The town & Country's had open differentials. One of my temptations when I build a trike is to go to a solid axle. It has it's problems too. The bike wants to go straight when you want to turn unless you lean it so that the inside wheel spins. When I looked up trikes for this response it seems that most have one wheel drive including Schwinn. It is Pacific now marketing as Schwinn so it's not the same as the old Chicago built Town & Country.
I did find this video from Utah Trikes. But this is a bunch of work and parts to get a differential.
The Samagag website looks like they gave this product some engineering. It has a forged body and uses bevel gears. They seem to provide axles and hubs as well. But how do you buy this stuff, how much does it cost and can you talk to anyone about what your specific needs are?
samagaga.com/WhatsInsideDifferential
I did find this video from Utah Trikes. But this is a bunch of work and parts to get a differential.
The Samagag website looks like they gave this product some engineering. It has a forged body and uses bevel gears. They seem to provide axles and hubs as well. But how do you buy this stuff, how much does it cost and can you talk to anyone about what your specific needs are?
samagaga.com/WhatsInsideDifferential
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11-01-21, 12:45 PM
#28
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Since my last entry I found only a couple mechanical parameters for adjustment (shim steering, axle nut under torque value). Lo and behold, it came down to my body not understanding I was no longer on two wheels! I've been fine ever after..Kind of like becoming a parent 
11-30-21, 01:18 PM
#29
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laverty67 that is a whole lot less expensive and complicated than getting a differential. 'Good to hear that. Now you can put your mind to thinking about better things.
09-20-23, 03:12 PM
#30
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Hey,
I think you are right. Almost all of the non-Schwinn trikes were one wheel drive. And when you pedal them they don't go straight. The old Schwinn Town and Country had a differential. For me that meant that I could not ride it tipped up on two wheels like the other trikes. Whichever wheel left the ground, that is the wheel that the differential sent the power to, and that wheel would spin.
If we were to make a trike with a solid rear axle, we would not have this problem when going straight, but we would have problems when turning because our inside wheel will want to turn less than our outside wheel.
.
I think you are right. Almost all of the non-Schwinn trikes were one wheel drive. And when you pedal them they don't go straight. The old Schwinn Town and Country had a differential. For me that meant that I could not ride it tipped up on two wheels like the other trikes. Whichever wheel left the ground, that is the wheel that the differential sent the power to, and that wheel would spin.
If we were to make a trike with a solid rear axle, we would not have this problem when going straight, but we would have problems when turning because our inside wheel will want to turn less than our outside wheel.
.
And the dreaded one-wheel drive like most of this type.
Now I'm not aware of mine pulling to one side or the other except where a pronounced camber is evident, but a solid axle driving both rear wheels would seem to have its advantages. Would the disadvantages hold sway? A bit more tyre wear and a fight betweeen tyres for supremacy on those bends, which the outside wheel would always win, doesn't sound so bad, y'know!.
I been thinkin' of cheap innovative solutions to achieve this, without wrecking the trike in the process.
A big washer and Loctite superglue on the free wheel hasn't quite worked . . . .
