Looking for a sprocket

[landuse]

Landuse, you will probably see in my other thread about the quad, but I bought an engine that came with a sprocket.

Engine has a 6 tooth clutch and the sprocket will be 54 tooth. The tires have a diameter of just over 12 inches.

Judging by the online calculator, that will give me a top speed of 14mph and a 9.00 gear ratio (if that's what you were talking about earlier).

So yeah, not really fast...actually, pretty slow lol. But I'm hoping it will give me more low end torque to get up small hills; someone please tell me if I am completely wrong here and I will order some different gears.

Sounds good to me. Give it a go and see how it feels

 

[Panhead5496]

Good, I'm not crazy lol! I will report the results.

 

[Panhead5496]

Landuse, the gearing was a fail! It didn't not want to move very well on flat ground. Let alone a slight hill, from a stop.

So, I am going to be looking into gearing and seeing what I can do to fix it.

 

[landuse]

Landuse, the gearing was a fail! It didn't not want to move very well on flat ground. Let alone a slight hill, from a stop.

So, I am going to be looking into gearing and seeing what I can do to fix it.

You are going to have to gear a lot lower then. Bummer. It was worth a try. I would have thought a 9:1 would have been ok

 

[Panhead5496]

Yep, but no worries. I will keep trying out different combos. All part of the fun right

So more teeth on the clutch to start with you think?

 

[Denny]

NO! More teeth on the axle!


Denny

 

[Panhead5496]

Ah, my bad. Gearing has always been confusing to me lol

Best I can find is 64t, up from the 54t I have on there now. I wonder if that would do it? https://www.amazon.com/RingBuu-Moto...138193&s=gateway&sprefix=T8F+,aps,236&sr=8-41

 

[Panhead5496]

Well, the 64t sprocket arrived yesterday. Actually worked better. I would start from a stop without revving like crazy, so that's good. I think a 70-72t sprocket would be perfect, but I can't find one.

Going to do more work on it this weekend.

 

[JTSpeedDemon]

Why can't you find a 70T+ sprocket?
What chain size, shaft diameter, etc.?

 

[Panhead5496]

It's mainly a size issue. The way the sprocket is bolted on to the axle leaves very little room for error. Here is the one I ordered that works ok. https://www.amazon.com/gp/product/B01EFO9K8Y/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 the mounting holes have to be 34mm apart, and even then I have to drill them out a little bit larger to get it to line up exactly.

The chain size is T8F chain. It's what the 49cc engine sprocket uses.

If you can find me a T8F sprocket, 70t+, with the same mounting pattern you will be AWESOME!

 

[JTSpeedDemon]

This is the closest thing I could find: http://tncscooters.com/index.php?route=product/product&product_id=135

---------- Post added at 09:13 AM ---------- Previous post was at 09:11 AM ----------

Actually, I should've asked, is your mounting pattern three holes?
'Cause I found a 64T with three bolt holes 33mm apart.
https://www.helmetkarts.com/collect...sprocket-various-sizes?variant=12618825203765

 

[Panhead5496]

Yes, it's a 3 hole pattern. The first link unfortunately won't line up correctly. The second link is what I already have.

However if I see it's a real problem in the future, I'll try that first link and drill it out! That was a nice find!

 

[JTSpeedDemon]

No problem bro.