hmbab2000

I've recieved several questions regarding the CVT adaptations that are going on.
I decided to start this thread to post a lot of the FAQ .
As well, to use as a general question spot regarding these new projects.
So far there are about 4-6 current CVT projects going on.
So guys, answer any questions people have...

Here is the CVT we are using, and a link to it.

Here is the 25H sprocket we are using, and a link to it.


The mounting of the CVT has been done a few ways, I'll get some info on those as well.
We are running 5/30 sythetic motor oil in the gear box.
So far the best stock set-up for the rollers as they come is to remove 3 of them and shim the conta spring.

My initial testing has shown that there is no loss of speed from just bolting up this CVT with this Sprocket.
Using my same rear sprocket (76T) I am about 2 mph faster than before when I ran 8/76.
And at 8/76 it was a dog off the line.

Here are the threads already in action...
Great information to read on all these threads!
My stretched CVT... link
Robotguys CVT prokect... link
Chevys4Me project thread... link
BIGFTPETEs project... link
Lieutenant Waffles project thread... link
The thread about the roller weights... link


I'll attach more information later.
This just gets us started.

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

robotguy

Abe,
You said that the newer CVT you got from Fancy
had a washer behind and in front of the outer Variator pulley.
Is that from the one with the chrome cover, or
the black cover?

MISFIT TOYS

The chrome cover does have about a 3/4 " round washer maybe and a 1/16 thick behind the vary nut. At least mine has one to.would lend to a little more stability.

robotguy

I just bought 2 more chrome ones, so that's good to hear....
Thx Pete.

MISFIT TOYS

You got me thinkin and i bought one more for GP .Linda from fancy must be freakin out on the run of CVT's she sold and raised the price ten. Oh well Ten i would have wasted on some other mischief.

GSR MAN

great idea with a q&a topic for the cvt guys

hmbab2000

Yes it was a Chrome one that had the washer.
But the other chrome one does not.

I have one black, and two chrome.

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

MISFIT TOYS

I guess it makes sense Just add a washer if it doesn't have one...........

robotguy

You can't sometimes because you need enough of that shaft sticking thru to get the vari outer pulley in the keyed shaft.
I believe the big Vari bushing is trimmed slightly in those CVTs
with the added washer.
Or, the shaft is slightly longer.

hmbab2000

Agreed!

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

MISFIT TOYS

Maybe shaft is longer .Going to open my other up and take a peak.

v tach

I have three black cover CVTs I bout probably two years ago. All three have a washer on both sides of the variator.

hmbab2000

Here are a few design's for the bracket.
Take's some elbow grease and some power tools, but these work..

This is Robotguy's side mount bracket:
Link
This is the base-mount design I did:
Link

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

hmbab2000

As stated before most of us are running 5/30 synthetic motor oil in the gearbox.
Some of us have sealed the unit, and some have maintained the vent.
Mixed results have been produced.

I found this little device to be perfect for filling the unit:
Found it "Bed, Bath & Beyond"


I just filled a new CVT gearbox, and it took 9 teaspoons.
Then I removed one teaspoon, to allow for some expansion.
Actually, that was all it would allow me to remove before the oil level fell below the syringe holes.

I am currently running my set-up sealed.
I placed an old pinion gear in the vent bolt hole to seal it up.
I did experience some leaking after my first long run, but I've left it to see if it leaks again or if it found a happy medium...?

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

lieutenant waffle

Here is a diagram to the main, weight-bearing bracket in my design:

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hmbab2000

This is the set of roller weights used to adjust the variator on the CVT.

Link

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

hmbab2000

I would appreciate any input as to the pro's and con's of running this Honda GX35 motor on a CVT?


I realize it would not be as powerful, but what could one expect?
You could always tune the variator to the motor, right?

Here are some toque and power curves...


I've found that motor for as little as $225 new, but am looking for more info before jumping in...

__________________
GSR40 Stretched 12", 460TSHK, JetPro Rhino, CIDLI, Go-Seat
GSR40TSi, CCAT460, .005 Gasket, JetPro Rhino
ESR750
ESR750EXX(12V12Ah), ADA Forks w/ADA Brakes, Go-Seat
36V Tork'd Hoverboard ESR750EXX(12V12Ah) 30+mph

robotguy

I think it would be very quick if you tuned the variator right
(heavier weights I think...)

AllenG

Q: is this whole cvt tranny worth my time for a reeded g43 cruiser motor that rev's about 13k? I already run 8/76 or 7/60 gearing on it and can wheelie it up a hill from a stop with a stock clutch and spring. Getting about 40-45 mph out of it in a pretty short distance.

I'm being serious too, wanna hear from the people who are playing with it and using it the most.

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AG Performance, CoastPed Racing Group.

*If your not serious about getting a motor built, DO NOT PM me for a price quote. Either you want it or you don't. I'm not actively trying to sell my services, but will do so if someone WANTS them.*

MISFIT TOYS

I just rode my Brand new CVT zenoah 51cc
(check my thread ) .I haven't gotten it where i want yet. I have to break it in and all .I also have a ported 51cc with 7/60 gearing . Right now that will clean it's clock ,out of the hole and top it does 45- 47.the problem to your question is we are still working the bugs out and from top end to bottom I think it was worth it to me . This Will cost you 2-3 hundred and time. For something very different.

robotguy

It's hard to say, because I've never run a more powerful engine with this than
the ported G43l (no reed, but w/pipe) All I know is that the G43l seemed perfect for this mod.
My problem was the horrible low end on my G43, but now it's super awesome. I bet it would improve low/mid power, but it might not give you more top end.
If you do decide to do it,
just balance the pulleys, and replace the bearings for sure.