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  Topic Review (Newest First)
08-14-2018 04:27 PM
MrKitty that thing is awesome Cam2 like your saying the chain is the least of his concern I whould be more woreyd about the tiny short bolts holding the sprocket to the rear hub long befor the chain the other thing that likes to break befor the chain is the splind that the front sporket slides over but once that goes you just weld the sprocket to the shaft and go with it 🙂

If you want a unbreakable chain then go with a Shadow conspiracy interlock half link chain I have one on my BMX park bike and dont be a cry baby about the price in the bmx world you get what you pay for http://www.bikeparts.com/BPC438939/t...hoCwcYQAvD_BwE
08-14-2018 10:43 AM
CAM2
Re: Changing my CAG from 25H to T8F

My stretched twin engine minichopper had really good handling after extensive mods....Good enough to get it to 52mph on a 14 front and a 25th rear gear.........

The #415 is more than adequate and the 415h is even better....I had twin engines pushing about 4.25hp each for a combined 8.5hp...There's no way a single engine build will ever reach half of what I was putting on it..The chain stayed strong ...
08-14-2018 10:34 AM
MrKitty why not go with the bike chain it's just a mini chopper it's not like you can race it or go very fast with that terrible geometry
08-14-2018 08:49 AM
Johnnymerk808 Up date on the app mini chopper clutch, sprocket, and chain. Mine are actually 12 tooth front and 28 Tooth rear sprocket's for 410 or aka #43 bike chain. Cam2 I believe you were correct that the picture I took above was an upgraded 415H chain. Which I think will work as well? I can't seem to find a motor with transmission for this set up? I only find 25H and T8F set ups.
08-08-2018 04:01 PM
CAM2
Re: Changing my CAG from 25H to T8F

Quote:
Originally Posted by Xyptir View Post
The 158 link chain is on the way. I like the polish idea. I know the 8 tooth will make it harder to get going but the new engine\carb is going to make up for that I hope. Doesn't matter, I'm trying to go at least 40mph.
If your engine is modded the right way for torque and the clutch has the right carburetor and clutch grab custom tailored you'll pull an 8th up front...It will have the same take off as a stock cag but have alot higher topend speeds...

I've run cags with 7/47 gearing on my 5 port cag and it went 45 with my brother riding it...


Another thing to touch on is the way the rear steel sprockets are manufactured...They're die stamped...

If you put them in a vice you can see the slope to the stamping which in turn kinda gives the sprocket teeth a slight slope to it too...

I fixed mine by bolting the wheel in the swingarm with the sprocket sloped outwards then I hand filed every tooth on the side to make it truly straight...
08-08-2018 03:34 PM
Xyptir
Re: Changing my CAG from 25H to T8F

The 158 link chain is on the way. I like the polish idea. I know the 8 tooth will make it harder to get going but the new engine\carb is going to make up for that I hope. Doesn't matter, I'm trying to go at least 40mph.
08-08-2018 06:02 AM
CAM2
Re: Changing my CAG from 25H to T8F

Quote:
Originally Posted by Sam-Q View Post
Pictured attached as promised. This is the chain that I purchased from that exact link that I posted up at post #21.

Happy to have someone tell me if it looks like it's of a decent quality or not.
The chain looks pretty well constructed...

What I do to my chains is slather them in multimetal polish and polish the rollers aswell as the rest of the chain to add a lil bit of extra protection aswell as help it roll alot more smoother against the crude chinese sprockets...

If you take the chain and wrap it around the sprocket you'll notice lil voids under the rollers showing how they don't fit together...

On one sprocket I took a chainsaw chain file and filed the sprocket so the links bottomed out as they should... I even had to reduce the tips on the pinion gear because they were too long and actually adding alot of stiction to the chain when tensioned correctly..

The customized fitment allowed for a smoother ride with alot lesser chain feedback....
08-08-2018 03:58 AM
Sam-Q
Re: Changing my CAG from 25H to T8F

Pictured attached as promised. This is the chain that I purchased from that exact link that I posted up at post #21.

Happy to have someone tell me if it looks like it's of a decent quality or not.
08-07-2018 06:42 PM
Sam-Q
Re: Changing my CAG from 25H to T8F

In my initial order I ordered the maximum of 152 links because I wanted as much as possible as I will use a chain splitter to get the length required and then have some left over for spares. Once I had the first order arrive, I checked it and then I ordered more to have enough for my future projects.

By memory the first order took about 2 weeks to arrive and the second closer to a week. That's to here in the S.E end of Australia.

The quality seems to be good but then I have not stress tested it yet and my knowledge is limited. At a minimum I can confirm it's a proper 25H specification in terms of side plate thickness and overall chain width.

My camera has a reasonable macro mode so I will have a go at taking a close up photo of the links to post on here
08-07-2018 11:25 AM
EPR
Re: Changing my CAG from 25H to T8F

How many links did you order?? I buy stuff from them all the time, but it will take 2 to 3 weeks before it comes, so I plan ahead.
08-06-2018 06:52 AM
CAM2
Re: Changing my CAG from 25H to T8F

Quote:
Originally Posted by Sam-Q View Post
If it helps I purchased some 25H quite cheap from the Aliexpress link below which has free shipping:

KMC 25H 136/142/144/152 Links Drive Chain 43 47cc 49cc Mini PIT Pocket Rocket Quad Dirt Bike ATV
The info always helps....Thanks for sharing Sam..
08-06-2018 05:52 AM
Sam-Q
Re: Changing my CAG from 25H to T8F

If it helps I purchased some 25H quite cheap from the Aliexpress link below which has free shipping:

KMC 25H 136/142/144/152 Links Drive Chain 43 47cc 49cc Mini PIT Pocket Rocket Quad Dirt Bike ATV
08-04-2018 01:22 PM
EPR
Re: Changing my CAG from 25H to T8F

Online I get 158 links of 25H chain for $8, and throw the old chain away. I also buy some gold chain, Cad plating cause it don't rust as bad a reg. chain. Once your chain gets loose spots and you adjust it, it will be to loose in spots and to tight in others.
With an 8 tooth pinion it is going to be hard on your clutch pads, and going to lose take off speed.
08-03-2018 03:18 PM
Xyptir
Re: Changing my CAG from 25H to T8F

Hmmmm. sounds interesting. I'll give it a try. Diesel fuel, When I was a kid, we used kerosene. probably can't get that any more. I love the smell of Diesel fuel in the morning. Smells like, like POCKET BIKE RIDING TIME !!
08-03-2018 11:39 AM
CAM2
Re: Changing my CAG from 25H to T8F

Quote:
Originally Posted by MrKitty View Post
I have freed up stuck links with a ball peen hammer and a hard piece of wood
Diesel fuel and a torch.....soak chain,,heat chain loosen links,resoak,reheat if needed until the chain works as it should...
08-03-2018 10:39 AM
MrKitty I have freed up stuck links with a ball peen hammer and a hard piece of wood
08-03-2018 10:26 AM
Xyptir
Re: Changing my CAG from 25H to T8F

Thanks for all the suggestions. I am going to stick with the 25H. I am changing the front sprocket to an 8 tooth from the 6 it came with. I want a higher top end. I do need a new chain because the one I have has stuck links that bend but not easily. Soaked it in gas for days and oiled it up and it still makes popping noises when it rolls over the front sprocket. After all the measuring and "putting a wrench on it" I figured it was a 25H. But then I saw some little markings on a few links. pics attached.
08-02-2018 05:39 AM
CAM2
Re: Changing my CAG from 25H to T8F

Quote:
Originally Posted by Johnnymerk808 View Post
I think you're right. It measures the same distance from center to center on my kids bikes.. it's just a whole lot beefier. What clutch would I need? Is it just the sprocket that matters? Both of mine have 12 off the drive shaft.
Those 7:1 , 5:1 and 3:1 reduction transmissions have sprockets for 25/25H Tf8mm and #415.....

What you dont know is one time on one of my X1's I actually ran a #41 chain on those same sprockets bike type chain sprickets too....it was just a huge wide monstrosity.....lol

There's like 3 different clutches available for it...

Good luck
08-01-2018 11:22 PM
EPR
Re: Changing my CAG from 25H to T8F

That new engine is the engine the bike came with, you can change the sprocket teeth size, even use 25h or T8F sprockets and chain. He had to run the Cag engine backwards cause the drive chain is on the right, and Cag on the left. But, when you mount either engine like that it turns backwards, and that little 3 to 1 or 5 to 1 trans reverses the engine direction so the rear wheel turns forward, the CVT belt trans reverses direction also.
08-01-2018 10:30 PM
Johnnymerk808 I think you're right. It measures the same distance from center to center on my kids bikes.. it's just a whole lot beefier. What clutch would I need? Is it just the sprocket that matters? Both of mine have 12 off the drive shaft.
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