thinking of getting a predator

Skarrd · Mar 3, 2012

so i'm thinking of switching to a 4 stroke predator motor rather than the china girl i have been running.

i know there's a hand full of gearboxes available for 4 strokes. but i'm a little curious about what will be compatible with the 99cc predator.

i'm thinking of a 4g t-belt trans going into a shift kit. but i don't know what the bolt pattern is on either the predator or the 4g trans.

even if it's something where it's off by a small amount i could just re-drill the trans for the new bolts.

azbill · Mar 4, 2012

I am not sure about the 4G,,,
I know people have had success using cvt's, agk's jackshaft, and of course, the EZM Q-Matic

scotto- · Mar 4, 2012

A 4G will not work on a 99cc Predator.......it was designed for the GXH50 and Huasheng clone and doesn't fit much else.

dnut

Skarrd · Mar 4, 2012

a cvt would be nice. the only ones i'm finding are made for a 3/4" bore on the driver side.

maybe i'm not looking in the right areas.

Ibedayank · Mar 5, 2012

Skarrd said:
a cvt would be nice. the only ones i'm finding are made for a 3/4" bore on the driver side.

maybe i'm not looking in the right areas.

all CVT with a 5/8s driver have went the way of the dinosaur
still are some NOS that pop on evilbay but that's pretty rare.
Best bet is to use a adapter bushing
http://www.gsistore.com/5idx3odshadb1.html

Skarrd · Mar 5, 2012

Ibedayank said:
all CVT with a 5/8s driver have went the way of the dinosaur
still are some NOS that pop on evilbay but that's pretty rare.
Best bet is to use a adapter bushing
http://www.gsistore.com/5idx3odshadb1.html

sweet, thanks for the link.

so i've narrowed down two options.

agk's jackshaft http://www.affordablegokarts.com/mm...e_Code=A&Product_Code=2600&Category_Code=99cc and clutch http://www.affordablegokarts.com/mm...e_Code=A&Product_Code=2400&Category_Code=99cc

or a CVT http://www.bulletlines.com/go-kart-torque-converter-p/52.htm?Click=746 with the 3/4" adapter http://www.gsistore.com/5idx3odshadb1.html

waiting to hear back from agk. emailed them because they have two jack shafts, the HF 99cc one for $140. or a general one for $99, emailed asking what is different between the two.

Ibedayank · Mar 5, 2012

Skarrd
save some cash and order off Ebay if you have an account

http://www.ebay.com/itm/Torque-Conv.../220966626691?pt=Go_Karts&hash=item3372a32583

Skarrd · Mar 5, 2012

Ibedayank said:
Skarrd
save some cash and order off Ebay if you have an account

http://www.ebay.com/itm/Torque-Conv.../220966626691?pt=Go_Karts&hash=item3372a32583

SOLD! XD thanks for the link i bought it c:

azbill · Mar 5, 2012

thats a good vendor
I have bought from BMI before,,,steve is a good dude

http://www.bmikarts.com/index.htm

Ibedayank · Mar 5, 2012

Torque Converter #41 3/4" Bore (473441-30)
Price:$195.95

price off bmi's website

I normally look for what I want then check evilbay for a cheaper price with free shipping.
Be surprized how much $$$ you can save doing that

bandito · Mar 5, 2012

Yes do it, youll make a few bucks but for the rest of your life you wil regret.

jowens · Mar 6, 2012

Ibedayank said:
Torque Converter #41 3/4" Bore (473441-30)
Price:$195.95

price off bmi's website

I normally look for what I want then check evilbay for a cheaper price with free shipping.
Be surprized how much $$$ you can save doing that

Yank,
would the engagement speed of 2350 be too high for the Predator engine? Shouldnt the clutch engage around 1800?

Ibedayank · Mar 6, 2012

jowens said:
Yank,
would the engagement speed of 2350 be too high for the Predator engine? Shouldnt the clutch engage around 1800?

IMHO i doubt it. still gives 1250 rpm of useable power band if you do not pull the gov. out of the motor. Now if it engages at a lower rpm then the motor idles at it won't have a "neutral" the max tourqe centrifical clutches rpm engagement ranges from 1800rpm to 3200rpm

Skarrd · Mar 6, 2012

Ibedayank said:
IMHO i doubt it. still gives 1250 rpm of useable power band if you do not pull the gov. out of the motor. Now if it engages at a lower rpm then the motor idles at it won't have a "neutral" the max tourqe centrifical clutches rpm engagement ranges from 1800rpm to 3200rpm

planning on pulling the gov anyway, plus if i remember, the clutches were adjustable (at least a little bit)

i got the engine and the CVT + adapter ordered. hope everything gets here soon.

jowens · Mar 6, 2012

Skarrd said:
planning on pulling the gov anyway, plus if i remember, the clutches were adjustable (at least a little bit)

i got the engine and the CVT + adapter ordered. hope everything gets here soon.

Skarrd,
From what Ive seen the CVT's have the drive sprocket inside the covered part of the tranny and not shafted out twards the midline of the bike after its mounted. How do you plan to get the chain to line up with the sprocket on the rear wheel?

wayne z · Mar 6, 2012

I believe the 129 bux with shipping Ebay one in the link in post # 7, has the sprocket on the outside, on the same side as the engine.

Skarrd · Mar 6, 2012

jowens said:
Skarrd,
From what Ive seen the CVT's have the drive sprocket inside the covered part of the tranny and not shafted out twards the midline of the bike after its mounted. How do you plan to get the chain to line up with the sprocket on the rear wheel?

wayne z said:
I believe the 129 bux with shipping Ebay one in the link in post # 7, has the sprocket on the outside, on the same side as the engine.

good thing i'm running it into the SBP shift kit for a 4 stroke.

granted i'm probably not going to be doing much shifting with running the cvt though

Ibedayank · Mar 6, 2012

the cvt its self changes "gears" has a gear ratio of 18-1 to 6-1
the chance of a freewheel gear set not being damaged is pretty slim imho...
look at scotto's build it uses a 212 pred and uses a cvt also magrider has a similar build

wayne z · Mar 6, 2012

Skarrd said:
good thing i'm running it into the SBP shift kit for a 4 stroke. granted i'm probably not going to be doing much shifting with running the cvt though

I don't think you will have a useable total drive train ratio if you try to go thru the shift kit.
You will need a rather large sprocket as it is, just to drive direct to the rear wheel. Better do the math before you commit to the idea.

Skarrd · Mar 6, 2012

wayne z said:
I don't think you will have a useable total drive train ratio if you try to go thru the shift kit.
You will need a rather large sprocket as it is, just to drive direct to the rear wheel. Better do the math before you commit to the idea.

already did..

cvt has a 10t going to a 17t, then a 10t going to a 445 a 32t going to the cassette which i can change gears to suit what the situation needs.

i'll need to see what the ratio ended up being but it was something like 20:1 down to 6:1

thinking of getting a predator

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