Doks Cafe Racer Build

[GW's Motorized]

@Chainlube

I saw on another thread that you mentioned the motor im going to use to charge a battery, is there any way you could provide me with a wiring diagram that shows how to charge a lead acid from the motor being used as a alternator? i know i need a voltage regulator, but how would i prevent from overcharging the lead acid?

would this do the trick?

DIY Lead Acid Battery Charger

DIY Lead Acid Battery Charger: Actually this could be used to charge any sort of battery where you want a constant current and a constant voltage. In this instructable I will take you through the whole process to producing a final boxed system. It will take an input from any AC…

www.instructables.com

thanks in advance!

I wouldn't suggest using the engine to charge a battery. A cordless power tool batter is a better idea and after rides you can slap it on a charger.

 

[MadDokKustoms]

I wouldn't suggest using the engine to charge a battery. A cordless power tool batter is a better idea and after rides you can slap it on a charger.

Sorry, my mistake for the muddy wording, i meant using a dc motor as a generator. my bt80 doesn't even have the white wire. I got the same motor that the guy used on the Japanese build. I plan to drive it either off the clutch spindle via belt or set it up on the chain tensioner. As stated above, if i rely on a rechargeable battery, i will always forget to charge it. my main commute is going to be at 6:00 in the morning to work, a idiot proof lighting system is a must.

 

[GW's Motorized]

Sorry, my mistake for the muddy wording, i meant using a dc motor as a generator. my bt80 doesn't even have the white wire. I got the same motor that the guy used on the Japanese build. I plan to drive it either off the clutch spindle via belt or set it up on the chain tensioner. As stated above, if i rely on a rechargeable battery, i will always forget to charge it. my main commute is going to be at 6:00 in the morning to work, a idiot proof lighting system is a must.

Ahh, I see. I understand being forgetful. I have tha E-start bt80 and it has a charging system.

 

[MadDokKustoms]

Ahh, I see. I understand being forgetful. I have tha E-start bt80 and it has a charging system.

Trust me, if I had the cash upfront, i would have gone for that option. life has dealt me a bad hand at the moment. I am parking my car and taking up my bike (along with many many other compromises) to make sure i can put food on the table and to keep the roof over my head.

 

[Chainlube]

You have to run an alternator off the chain, either side, to charge the battery. A 3 wire alternator has a built-in regulator. It's been awhile since I wired my spitty so I don't remember the color of the wires, but white to ground, black hot and the colored wire is the trigger.

By changing to a sprocket you can overdrive the alternator. I would run it off a right side sprocket with it behind the seat.

 

[GW's Motorized]

Trust me, if I had the cash upfront, i would have gone for that option. life has dealt me a bad hand at the moment. I am parking my car and taking up my bike (along with many many other compromises) to make sure i can put food on the table and to keep the roof over my head.

Yeah, I get being on a budget. I just got lucky with some extra jingle I got from my parents during the holidays. I was just gonna buy the cheap 80 dollar ebay kit lol

 

[MadDokKustoms]

So today was supposed to be the last day of assembly... but as they say, no plan survives first contact. Have a issue where my chain is either rubbing on the frame or the wheel. I bought a 36 tooth sprocket now, hopefully the smaller diameter helps me clear the rear arms and a flat sprocket will help me thread the needle. Pictures to come tomorrow. I need a drink.

 

[Chainlube]

Do you have a dished sprocket? Turn it so the dish is out.

 

[MadDokKustoms]

Do you have a dished sprocket? Turn it so the dish is out.

The 36 tooth sprocket game me clearance on the frame. Now I just need to find a thinner tire.

 

[MadDokKustoms]

Installation is finished (for now) just need to cable manage. Once the warm weather is here to stay, I'll be doing a full paint job and fiber glass gas tank.