Rehab thread roketa - Page 2

franque · 11-07-2017, 02:26 PM

The only thing with LEDs though is that they will blink on AC power... They are diodes, after all.

Ariel Red Hunter · 11-07-2017, 03:05 PM

Quote:

Originally Posted by franque

The only thing with LEDs though is that they will blink on AC power... They are diodes, after all.

I wrote that sitting under my LED house lighting, which, if it is blinking, is doing it so fast I can't see it. That doesn't mean you are wrong, as I have no idea what cycles the lighting coils put out. A WAG would be one cycle per revolution. If that is right, I don't think you will be able to see it happen...ARH

franque · 11-07-2017, 04:53 PM

A lot of LED house lights use a bridge rectifier to turn the electricity from AC to DC, if they didn't, you might be bothered by the pulsating effect that they have. If you look at cheap LED christmas lights, some people (I am one of them), can see them pulsating at 60hz, because that is what the power in the US cycles at.

On one of these bikes, the frequency that an LED would pulsate is dependent upon the RPMs of the engine... I'm not sure what the frequency would be, but a cheap bike LED would probably not have bridge rectifiers to turn the AC to DC, so while it might not be as noticeable at higher RPM, it might be visibly cutting out at idle, kind of like how an old AC powered light would appear dimmer at lower RPMs (but for a different reason, lower voltage). Usually smaller single LEDs, unless specified differently (like wired in parallel), operate at 1.5v.

Ariel Red Hunter · 11-07-2017, 07:37 PM

Quote:

Originally Posted by franque

A lot of LED house lights use a bridge rectifier to turn the electricity from AC to DC, if they didn't, you might be bothered by the pulsating effect that they have. If you look at cheap LED christmas lights, some people (I am one of them), can see them pulsating at 60hz, because that is what the power in the US cycles at.

On one of these bikes, the frequency that an LED would pulsate is dependent upon the RPMs of the engine... I'm not sure what the frequency would be, but a cheap bike LED would probably not have bridge rectifiers to turn the AC to DC, so while it might not be as noticeable at higher RPM, it might be visibly cutting out at idle, kind of like how an old AC powered light would appear dimmer at lower RPMs (but for a different reason, lower voltage). Usually smaller single LEDs, unless specified differently (like wired in parallel), operate at 1.5v.

The ones I have bought for my car are 1156 and 1157. Package says will operate between 8 volts to 20 volts...ARH

Angus67 · 11-07-2017, 08:55 PM

With all that aside, my $120 grote led light will be fine. On another note, before i even attemp to fire it up, i want to adjust the valves. Is it .003 intake, .004 exhaust? I will also adj the chain tensioner, but the starter motor sure looks in the way.is there a known block off for removal,? Some bikes can take freeze plugs to block it off.

humanbeing · 11-07-2017, 10:32 PM

Quote:

Originally Posted by Angus67

Is it .003 intake, .004 exhaust...

Honda always said 0.1± 0.02mm https://plus.google.com/photos/10536...48744657475970

Angus67 · 11-07-2017, 10:51 PM

On Both? Usually the exhaust is a little looser.

humanbeing · 11-08-2017, 01:17 AM

Quote:

Originally Posted by Angus67

On Both? Usually the exhaust is a little looser.

IN=EX are recommend by Honda in many small bike https://drive.google.com/file/d/0B2b...ew?usp=sharing
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63.5*62.2 = MD29E http://www.ctx200.com/files/xl200_workshop_manual/

Ariel Red Hunter · 11-08-2017, 09:57 AM

Quote:

Originally Posted by humanbeing

Honda always said 0.1± 0.02mm https://plus.google.com/photos/10536...48744657475970

Yes, but we've had great success with .003 inches intake, and .004 inches exhaust. After break-in, you can go .002 intake and .003 exhaust, if you want, but most just stick with .003 and .004...ARH

Angus67 · 11-08-2017, 11:54 AM

Ok. Thanks. Word on the starter?

**JerryHawk250** · 11-08-2017, 12:03 PM

You may be able to use something like this. Just need to find the correct size. https://www.amazon.com/Needa-Parts-2...AB79JRQDYXB5FH

Ariel Red Hunter · 11-08-2017, 12:41 PM

Quote:

Originally Posted by Angus67

With all that aside, my $120 grote led light will be fine. On another note, before i even attemp to fire it up, i want to adjust the valves. Is it .003 intake, .004 exhaust? I will also adj the chain tensioner, but the starter motor sure looks in the way.is there a known block off for removal,? Some bikes can take freeze plugs to block it off.

I would just make a block off plate out of 3/16th - 1/4 inch aluminum plate. Make a paper gasket out of an old breakfast cereal box, and bolt it on in place of the starter...ARH

Angus67 · 11-08-2017, 02:06 PM

We have those at work. Thanks

**JerryHawk250** · 11-08-2017, 02:35 PM

Quote:

Originally Posted by Angus67

We have those at work. Thanks

If I remember right that should be about 30mm which is about 1 1/8" But I would check that. I'm getting older and the remembering is getting worse. lol

Angus67 · 11-09-2017, 10:56 PM

I got the starter out. Looks like a 1 1/4 expansion plug will block it off.

11-07-2017, 10:51 PM	#22
Angus67 Join Date: Oct 2017 Location: shelton, Washington Posts: 167	On Both? Usually the exhaust is a little looser. __________________ 2006 roketa 200cc 1971 Yamaha xs650 2x 1980 xs650, 1 is a café, other is a chopper/brat 1972 Honda xl250 2x early 90's Honda rf600 parts bikes more mc junk laying around.
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11-08-2017, 11:54 AM	#25
Angus67 Join Date: Oct 2017 Location: shelton, Washington Posts: 167	Ok. Thanks. Word on the starter? __________________ 2006 roketa 200cc 1971 Yamaha xs650 2x 1980 xs650, 1 is a café, other is a chopper/brat 1972 Honda xl250 2x early 90's Honda rf600 parts bikes more mc junk laying around.
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11-08-2017, 12:03 PM	#26
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,545	You may be able to use something like this. Just need to find the correct size. https://www.amazon.com/Needa-Parts-2...AB79JRQDYXB5FH __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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11-08-2017, 02:06 PM	#28
Angus67 Join Date: Oct 2017 Location: shelton, Washington Posts: 167	We have those at work. Thanks __________________ 2006 roketa 200cc 1971 Yamaha xs650 2x 1980 xs650, 1 is a café, other is a chopper/brat 1972 Honda xl250 2x early 90's Honda rf600 parts bikes more mc junk laying around.
	0

11-09-2017, 10:56 PM	#30
Angus67 Join Date: Oct 2017 Location: shelton, Washington Posts: 167	I got the starter out. Looks like a 1 1/4 expansion plug will block it off. __________________ 2006 roketa 200cc 1971 Yamaha xs650 2x 1980 xs650, 1 is a café, other is a chopper/brat 1972 Honda xl250 2x early 90's Honda rf600 parts bikes more mc junk laying around.
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11-07-2017, 02:26 PM	#16
franque Join Date: Nov 2017 Location: Marseille, France -> Conakry, Guinea Posts: 1,481	The only thing with LEDs though is that they will blink on AC power... They are diodes, after all.
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11-07-2017, 04:53 PM	#18
franque Join Date: Nov 2017 Location: Marseille, France -> Conakry, Guinea Posts: 1,481	A lot of LED house lights use a bridge rectifier to turn the electricity from AC to DC, if they didn't, you might be bothered by the pulsating effect that they have. If you look at cheap LED christmas lights, some people (I am one of them), can see them pulsating at 60hz, because that is what the power in the US cycles at. On one of these bikes, the frequency that an LED would pulsate is dependent upon the RPMs of the engine... I'm not sure what the frequency would be, but a cheap bike LED would probably not have bridge rectifiers to turn the AC to DC, so while it might not be as noticeable at higher RPM, it might be visibly cutting out at idle, kind of like how an old AC powered light would appear dimmer at lower RPMs (but for a different reason, lower voltage). Usually smaller single LEDs, unless specified differently (like wired in parallel), operate at 1.5v.
	0