Trying to determine the model of a recently acquired large pocket bike - Page 7 - Pocket Bike Forum - Mini Bikes
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post #121 of 149 (permalink) Old 4 Weeks Ago Thread Starter
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Originally Posted by EPR View Post
I would think about getting a new coil for $12, there junk to start with, and their crummy wires can fail at anytime.
If you look the fuel in line is about .125" ID, the return is .090"
I'll go this route too since it's the only piece I have left to service that's a tune up item. Doesn't look too easy to replace. Seems like it has some plastic shield that if removed begins to separate the casing. Guess I'll find out soon enough! 😅
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you simply take off the shroud then the coil is right there take out the two bolts and its in the trash use a business card to set the gap to the flywheel

Faster then a speeding E Revo
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post #123 of 149 (permalink) Old 4 Weeks Ago Thread Starter
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Removed the coil. Any suggestions for a good replacement?
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post #124 of 149 (permalink) Old 4 Weeks Ago Thread Starter
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you simply take off the shroud then the coil is right there take out the two bolts and its in the trash use a business card to set the gap to the flywheel
Set the gap to the flywheel? Uh oh. What am I missing there?
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Check out the gunk I found in/on the flywheel fins. 😆 It's all cleaned off and sanded. Couldn't tell you what it was.
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post #127 of 149 (permalink) Old 4 Weeks Ago Thread Starter
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Removed the coil. Any suggestions for a good replacement?
Found a good match on eBay. My version has the 62mm spacing between mounting holes.
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Re: Trying to determine the model of a recently acquired large pocket bike

Wow, never seen anything that bad, that might have sat on the bottom while stored and picked up moisture. I would put it back and see if its better now. The 43cc and 49cc piston port engines all have the same coil.

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Re: Trying to determine the model of a recently acquired large pocket bike

Quote:
Originally Posted by nerdydaddyo View Post
Check out the gunk I found in/on the flywheel fins. 😆 It's all cleaned off and sanded. Couldn't tell you what it was.
That is what's known as electrolysis oxidation between magnesium aluminum and steel

The airgap is .020" sae

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Last edited by CAM2; 4 Weeks Ago at 03:46 PM.
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post #130 of 149 (permalink) Old 4 Weeks Ago Thread Starter
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Quote:
Originally Posted by nerdydaddyo View Post
Check out the gunk I found in/on the flywheel fins. 😆 It's all cleaned off and sanded. Couldn't tell you what it was.
That is what's known as electrolysis oxidation between magnesium aluminum and steel

The airgap is .020" sae
Airgap is still a business card, right? I mean I HAVE feeler gauges, but a business card is handy as well.
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Re: Trying to determine the model of a recently acquired large pocket bike

Just get something close to .020" some cards are, once the coil is tight, turn the flywheel all the way around to make sure the flywheel is not hitting the coil on the other side.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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Re: Trying to determine the model of a recently acquired large pocket bike

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Originally Posted by nerdydaddyo View Post
Airgap is still a business card, right? I mean I HAVE feeler gauges, but a business card is handy as well.
Most business cards now are laserjet printed and also around .125".

Theyre not like the business cards of say like 25-30 years ago...

Cereal boxes are more closer to the right thickness now.........

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Last edited by CAM2; 4 Weeks Ago at 06:52 AM.
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Re: Trying to determine the model of a recently acquired large pocket bike

Before I have taken a thick piece of paper and build it up with masking tape to .020" pretty simple.

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Re: Trying to determine the model of a recently acquired large pocket bike

Am I even on the right forum for a Doodle Bug mini bike? Seems like you guys have got some serious machines here. I think maybe I'm in the wrong place to find the help I need. Who's up for a minor challenge as opposed to the ones I'm reading about here?
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Re: Trying to determine the model of a recently acquired large pocket bike

Your stepping on someone else thread. You have 11 post enough to post your own. Go to Mini bike Section, click on the title and find the New Thread button, click and then type your text, and photos if you can figure it out. No one can see you here. You will find more people on your own post.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #136 of 149 (permalink) Old 3 Weeks Ago Thread Starter
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Quote:
Originally Posted by nerdydaddyo View Post
Airgap is still a business card, right? I mean I HAVE feeler gauges, but a business card is handy as well.
Most business cards now are laserjet printed and also around .125".

Theyre not like the business cards of say like 25-30 years ago...

Cereal boxes are more closer to the right thickness now.........
Used. 020 feeler gauge. Fired right up! Got all the trim back on too and took it for a spin. Tons of fun to drive!
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Last edited by nerdydaddyo; 3 Weeks Ago at 05:55 PM.
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Re: Trying to determine the model of a recently acquired large pocket bike

Pretty good shape for an older bike.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #138 of 149 (permalink) Old 3 Weeks Ago Thread Starter
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Pretty good shape for an older bike.
Thanks. Just need to order two new air valves for the tires as the old ones are torn and leaking. Won't hold air. Tire says tubeless design, a HUGE plus. Inner tubes are a PAIN. 😅
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post #139 of 149 (permalink) Old 3 Weeks Ago Thread Starter
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Now that the bike is done and working 100 percent, I'm going to gather up the photos I captured while wiring and make a live wiring diagram for future enthusiasts. Hopefully this weekend I can get that done.
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Re: Trying to determine the model of a recently acquired large pocket bike

Great job, I took the body off my X18 a few weeks ago to change the battery and fix al the stupid little problems it has.

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