Regenerative braking and Gearing - Electronic Circuits Projects Diagrams Free

fzn10 · 16th August 2006, 04:05 AM

Ok this might be a bit more on the mechanical side but, I want to do regenerative breaking with a go-cart. I have two gear-wheels with a belt drive. The smaller wheel is driven by the motor which effectively rotate a bigger gear-wheel through a belt which in turn rotate the wheels of the go-cart. Now iv read somewhere which iv referenced that you cant do regenerative braking due to some tension problems(look at reference under “toothed belts”. They only mention toothed belts however, but does that apply to chain belts (The ones used in bicycles for example) as well. Reading the theory about it, makes me think that it does, but just want to check

Thanks

Referense
http://www.4qd.co.uk/faq/bmnc4.html#surge
located under toothed belts down the buttom.

kchriste · 16th August 2006, 04:54 AM

If you can drive your GoCart in reverse then you should be able to do regenerative braking as far as the belts are concerned. As long as you don't have an idler wheel (labeled as C) as depicted in the 2nd diagram, you should be fine. The idler wheel issue would apply to chains also. So, for example, a 10 speed bicycle drivetrain would not work.

fzn10 · 16th August 2006, 05:03 AM

what ur saying is actually is incorrect, the website is saying that the second diagram is actually a better option. Tnanks for ur input though.

Marks256 · 16th August 2006, 05:05 AM

Just take the alternator off of a car, and then run it into the battery. Hook it up to a clutch, then it could be your breaks(make sure you have real breaks too!)

kchriste · 16th August 2006, 05:25 AM

Quote:

what ur saying is actually is incorrect, the website is saying that the second diagram is actually a better option. Tnanks for ur input though.

Take a look at a beltdrive on a motorcycle.

hjames · 16th August 2006, 05:37 AM

An idler is supposed to be placed on the "slack" side of a pulley system. If the belt drive can go into reverse, that idler is suddenly going to be subjected to a whole lot of force that it probably wasn't designed to deal with - plus now there's going to be slack on the other side.

I've never really heard about this slipping issue though. Forces are forces, and I don't especially see why there would be anything special about backdriving a motor.

**Nigel Goodwin** · 16th August 2006, 09:46 AM

Quote:

Originally Posted by kchriste

Take a look at a beltdrive on a motorcycle.

'Real' motorbikes don't use belts!.

OutToLunch · 16th August 2006, 01:32 PM

Quote:

Originally Posted by Nigel Goodwin

'Real' motorbikes don't use belts!.

Funny, I never knew I was riding a fake motorcycle

Marks256 · 16th August 2006, 05:13 PM

Yes, Nigel. Most Harley Davidson's have a belt drive from the transmission to the wheel.

**Nigel Goodwin** · 17th August 2006, 10:03 AM

Quote:

Originally Posted by Marks256

Yes, Nigel. Most Harley Davidson's have a belt drive from the transmission to the wheel.

Like I said, 'real' motorbikes don't have belt drive!

Marks256 · 17th August 2006, 05:12 PM

Technically, motorbikes/motorcycles should be called enginecycles, or enginebikes. A motor is electric, and an engine is fuel powered.

So, what are you trying to say, Nigel?

Hero999 · 17th August 2006, 07:00 PM

Lol there are mopeds with chain drive!

I'd say a Harley is more of a motorbike than a moped!

dknguyen · 17th August 2006, 07:35 PM

Quote:

Originally Posted by Hero999

Lol there are mopeds with chain drive!

I'd say a Harley is more of a motorbike than a moped!

All apples are fruit, but not all fruit are apples.

**Nigel Goodwin** · 17th August 2006, 07:53 PM

Quote:

Originally Posted by Hero999

Lol there are mopeds with chain drive!

I'd say a Harley is more of a motorbike than a moped!

I've never rated Harley's, high price, low performance - I've never seen the attraction of them?.

Hero999 · 17th August 2006, 08:45 PM

I can't say I like them either.

I prefer something lightweight and more sporty, I wouldn't swap my Honda CB500 for a Harley (apart from to flog on ebay, then buy a new CB500 with cash to spare).

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16th August 2006, 04:05 AM	(permalink)
fzn10	Regenerative braking and Gearing Ok this might be a bit more on the mechanical side but, I want to do regenerative breaking with a go-cart. I have two gear-wheels with a belt drive. The smaller wheel is driven by the motor which effectively rotate a bigger gear-wheel through a belt which in turn rotate the wheels of the go-cart. Now iv read somewhere which iv referenced that you cant do regenerative braking due to some tension problems(look at reference under “toothed belts”. They only mention toothed belts however, but does that apply to chain belts (The ones used in bicycles for example) as well. Reading the theory about it, makes me think that it does, but just want to check Thanks Referense http://www.4qd.co.uk/faq/bmnc4.html#surge located under toothed belts down the buttom.

16th August 2006, 04:54 AM	(permalink)
kchriste	If you can drive your GoCart in reverse then you should be able to do regenerative braking as far as the belts are concerned. As long as you don't have an idler wheel (labeled as C) as depicted in the 2nd diagram, you should be fine. The idler wheel issue would apply to chains also. So, for example, a 10 speed bicycle drivetrain would not work. __________________ --- The days of the digital watch are numbered. ---

16th August 2006, 05:03 AM	(permalink)
fzn10	what ur saying is actually is incorrect, the website is saying that the second diagram is actually a better option. Tnanks for ur input though.

16th August 2006, 05:05 AM	(permalink)
Marks256	Just take the alternator off of a car, and then run it into the battery. Hook it up to a clutch, then it could be your breaks(make sure you have real breaks too!)

16th August 2006, 05:37 AM	(permalink)
hjames	An idler is supposed to be placed on the "slack" side of a pulley system. If the belt drive can go into reverse, that idler is suddenly going to be subjected to a whole lot of force that it probably wasn't designed to deal with - plus now there's going to be slack on the other side. I've never really heard about this slipping issue though. Forces are forces, and I don't especially see why there would be anything special about backdriving a motor.

16th August 2006, 05:13 PM	(permalink)
Marks256	Yes, Nigel. Most Harley Davidson's have a belt drive from the transmission to the wheel.

17th August 2006, 05:12 PM	(permalink)
Marks256	Technically, motorbikes/motorcycles should be called enginecycles, or enginebikes. A motor is electric, and an engine is fuel powered. So, what are you trying to say, Nigel?

17th August 2006, 07:00 PM	(permalink)
Hero999	Lol there are mopeds with chain drive! I'd say a Harley is more of a motorbike than a moped! __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.

17th August 2006, 08:45 PM	(permalink)
Hero999	I can't say I like them either. I prefer something lightweight and more sporty, I wouldn't swap my Honda CB500 for a Harley (apart from to flog on ebay, then buy a new CB500 with cash to spare). __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.