GoldenMotor.com Forum
General Category => General Discussions => Topic started by: ottoseeker on February 16, 2011, 02:20:08 PM
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attached are 2 pics of a 40s vintage simplex servicycle. I bought an un-restored version, which is complete, except for motor/drivetrain. I would like to purchase (i think??) a powerful hub motor, rear wheel, and all the extras. could you please advise me with my shopping list?
should I go front or rear? the rear requires spoke work, but it does have a hub brake. then there is the issue of spoke diameter. bicycle rim should go up front.
stock rear wheel is 26x2.25 (changable. maybe a 24x4? must have heavy spokes in rear)
space for rear axle is 4.25"
bike weight is 75lbs
any suggestions would be greatly appreciated
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What an awesome looking bike. I would think appearance wise a Magic pie on the rear would look nice. But if it's a from brake the this is an issue. I can't tell from the pictures what the front brakes are. If you can't put v-brakes or disk brakes you may have to use a separate motor and gear the drives the chain. Do you have any close up pictures o the current brakes
Gary
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It seems belt-driven?
Wouldn't it be an better idea to replace the motor with a HPM5000 and keep the original wheel?
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I'd rebuild the original motor.
Whatever antique or vintage value this has will be gone as soon as you swap in modern parts.
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thanks for your notes.
re value: it came motor-less, so any non-original motor will deface its value. I plan to build a small retro sidecar (for groceries only), and use it as a mobility scooter (have a disability). it has larger wheels and is much cooler.
re brakes: it has a pedal lever, which works a drum brake in the rear hub. I am 50/50 about using/scrapping it.
re set up: the rear wheel is missing spokes (easily fixed), and the 24" pully is rotten (not easily fixed). I like the simplicity and safety of a hub motor, but I am overwhelmed with product options.
- front or rear?
- new wheel (is there one that fits with heavy spokes?) or lace a motor into stock wheel?
- 48/500 motor?
where to start??
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I'd go for the front wheel as it is simplest, leaves you your rear hub brake intact, and leaves the bike looking the most original. I'd go for the 48-1000 just to get heavier duty windings even if you don't need the power. But add a side car full of groceries and you may need to do both wheels. External controllers have their advantages but have to be put somewhere. This may be a candidate for a double-pie conversion.
Oh, and where do the batteries go? And what kind?
What is your budget?
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there is over a cubic ft of space where the motor used to be. ideal for a battery box.
the sidecar (if built) will be made of ultralight aircraft plywood. should weigh around 10lbs or less. similar to one of those bike trailors.
i am hoping to keep the electro/mechanicals under a thousand to start. more can be added later.
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I'd start with the front wheel and then if that is not enough oomph, add the rear later.
Batteries are what will be expensive. I use NiMH D cells that are about $10 each. You need 40 of them for 48V.
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I use NiMH D cells that are about $10 each. You need 40 of them for 48V.
Yipes, why don't you buy lithium cells?
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Because I have these and they work, and they work really well for regen,