1978 tas sprinter

Doug Coleman /

I just bought a 1978 tas sprinter and having a tough time with wiring. Any help would be great, thanks.

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Re: 1978 tas sprinter

Neat, really weird taiwan made bike.

That wiring looks like it's been messed with badly. If I were you I'd start from scratch. To make it run you just need to run the points wire to the ht coil and make sure the kill wire on the ht coil isn't grounded. Lights on the other hand will be interesting as I never found the diagrams when I had one 15 years ago..hey a multimeter, clean the points and see what you can do.

Engine is very similar to a solo in appearance... (edited)

Re: 1978 tas sprinter

Doug Coleman /

Thanks for your response. I couldn't pass this moped by...I just don't understand the 2 diodes going from stator to harness.

Re: 1978 tas sprinter

What diodes? Mine diddnt have that. You have a picture of them? Maybe someone tried to make a rectifier.

Edit, ohh wow I see it now. I'm not sure any of that is wired right, but it looks like they were trying to float dc for some reason.

Re: 1978 tas sprinter

Doug Coleman /

It came stock on bike because it has the original sprinter logo on one side. I think it prevents current from re-entering stator?

Re: 1978 tas sprinter

Really! Wow. Maybe mine was modded then.huh. I'm more surprised that a moped company would go through the trouble of molding a models name into the plastic......

Well it must have been designed that way then, the electrical tape stillreally concerns me. Anyway, most mopeds are ac, meaning the current is meant to go back into the stator. It flipflops with every revolution.

With that, the power is rectified into pulsed dc. Instead of power flowing back and forth those diodes are a one way valve. One of the wires coming out of that diode block is positive, the other is negative. Because the chassis ground isn't being used, it's called "floating". Those wires are only for lighting.

Re: 1978 tas sprinter

Doug Coleman /

Wow, that's interesting. Do you think I could eliminate the diodes and just run headlight and brake/tail lights?

Re: 1978 tas sprinter

Probably.lol but if that works, and like you said it's meant to be there. I wouldn't

Take your multimeter and set it to dc volts. Then connect the probes to the two wires exiting the block. Spin over the engine if you get voltage you have your power for lights right there.

Wait is there only one wire entering the diode block?

Re: 1978 tas sprinter

Doug Coleman /

yellow in, yellow red out.

Re: 1978 tas sprinter

I'm confused, diddnt look closely enough. Thought I was seeing one yellow go in and a yellow and an orange exit....

Somebody else will chime in with more knowledge.

This bike never had a battery, correct?

Re: 1978 tas sprinter

Doug Coleman /

I cannot find where a battery would of went. 3 wires from stator-yellow, black to kill and green that is not used.

Re: 1978 tas sprinter

Doug Coleman /

red goes to horn first.

Re: 1978 tas sprinter

This is educated speculation, but it doesn't hurt.

You shouldn't have a kill wire coming out of the stator, and if you do then you would also have a spark plug wire coming directly out of the stator. Because you would have a stator mounted high voltage coil.

One of those three wires is expressly for the brake light(required by dot so the like won't start with a blown brake light), one handles headlight, tail light and horn, and one handles ignition. I'm almost certain that's how mine was.

The ignition wire should exit the stator and connect to the high voltage coil, it looks like a black brick with the spark plug wire coming out of it, bolted directly to the frame...the kill wire "should" connect to that coil, outside of the stator.

I'd there any way you could post more pictures of the bike? The stator, wires exiting stator etc?

To be clear, everything I'm saying could be bullshit. As I'm not there looking at it and I sold mine 15 years ago. (edited)

Re: 1978 tas sprinter

Doug Coleman /

coil and stator.

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Re: 1978 tas sprinter

Do you still have the condenser? Should mount in that offset round hole. If not it's a non issue, I use old vw condensers.

Well with that picture we definatly have enough info to at least get it running if the engine is serviceable.

Re: 1978 tas sprinter

Doug Coleman /

I pulled the condenser and tried testing it. set on ohms but didnt charge? pulled exhaust and plug, piston rotates nicely and cylinder and heads rings look like low mileage.

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Re: 1978 tas sprinter

> Doug Coleman Wrote:

> -------------------------------------------------------

> I pulled the condenser and tried testing it. set on ohms but didnt

> charge? pulled exhaust and plug, piston rotates nicely and cylinder and

> heads rings look like low mileage.

It stayed on 1 on the multimeter? What range are you trying? Try the highest range, it should ride in resistance the longer you measure it

Re: 1978 tas sprinter

Doug Coleman /

I ordered a new one from treatland that looks like it with screw base and felt pad.

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Re: 1978 tas sprinter

Doug Coleman /

by the way, thanks Aaron!

Re: 1978 tas sprinter

Doug Coleman /

I am going to have to order 2 diodes and try to figure out how to wire them because I took the rubber housing off to see what was in there.

Re: 1978 tas sprinter

Doug Coleman /

diodes inside rubber, t3b 7k?

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Re: 1978 tas sprinter

So the stator has two source coils and three wires right? If the ignition source coil (the one wired to the points and condenser) has one wire leaving the magneto, you can connect that wire directly to the external HT coil and it should have spark. Your kill wire would be connected to that same wire and simply connect it to ground to stop the motor. The two other wires would be for the lights and horn and don't affect the ignition circuit. If the ignition source coil has two wires the one that connects to the points and condenser goes the ht coil as above, but the other wire has to be connected to get spark. Often this wire runs the tail light so that if the tail light goes it, the moped stops running. The single wire from the other coil would supply the headlight, horn and brake light.

Re: 1978 tas sprinter

Doug Coleman /

great help, thank you.

Re: 1978 tas sprinter

I highly doubt you'll need those diodes. Give the post time, it'll get worked out. Also, there's no reason to buy a specific condenser with mopeds. As long as it has a grounding/mounting strap and one wire. It'll work and you can bolt it to the frame externally.

I'd aim for spark and getting it running first, you have alot if not all the info here to do that... then when it does you can measure the output if the lighting coils and see if you need to rectify or regulate it. If you do need to, NO PROBLEM don't worry about that thing and adapt one of the many many other solutions available for mopeds. It's just electricity, bike doesn't care what brand of part or style of device as long as it works.

Also could we get more picture of the engine itself? I'm not certain but I think this thing may be the first instance of a solo clone. Without the odd water cooling but still. The angle and position of that carb screams solo

The engine is japanese made according to myrons and I'm facinated by this! Could we see the carb too, does it have reed valves on the intake?

It looks Soo similar

https://www.treatland.tv/new-old-stock-SOLO-engine-p/nos-solo-engine-no-ignition.htm?gclid=Cj0KCQiA7NKBBhDBARIsAHbXCB6vcqN7BvX_EAvBW9GYxsz7V24tc10yYH8Ofn0UftacP6Qmuy3TZwsaAkpjEALw_wcB (edited)

Re: 1978 tas sprinter

Doug Coleman /

BE-48S

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Re: 1978 tas sprinter

Doug Coleman /

need clutch cover too.

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Re: 1978 tas sprinter

Wonder Which ignition coil is original, the red one or the black one. Odd that you somehow have two.

One thing is for sure, it looks to be in very good shape.

You may have a bit of an issue with timing. Don't see a woodruff key.

I hope that the crank seals are good, with no information they may be hard to find replacements for if they aren't marked clearly.

Not a total clone, but still looks very similar to a solo engine.

You aren't going to find a clutch cover, but another bikes may be adapted easily.

Re: 1978 tas sprinter

The clutch is a Laura M48 clone, unfortunately it's different enough to the point that I don't think a Batavus or Motobecane clutch cover would fit.

Re: 1978 tas sprinter

Doug Coleman /

ok, thanks.

Re: 1978 tas sprinter

Nice, I just picked up one of these as well!

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