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Fuzzy79
01-29-2012, 06:00 PM
So I live in cali and I was wondering if the 49cc engines would be able to push me around my city at a decent clip. I am no small guy I am 6'4" and over 250lbs. I would like ro cruise at around 35mph. Can it be done without breaking the bank

The_Aleman
01-29-2012, 06:41 PM
Greetings! I'm in Cali as well, just under 6'4" and 235, I have a 49cc Huasheng. It has adequate power for me, but I typically cruise 20-29. My bike's top speed on the flats is 34-36MPH, it wouldn't be able to hold that speed with any headwind tho. It's not so much the weight as it is the aerodynamics that hold me back.

A GXH50 and a Q-matic might get you a cruising speed of 35, but again, probably not with any headwind. You'll either have to drop your expectations to a 30MPH cruise or use a more powerful engine, like a Predator 99cc.

scotto-
01-29-2012, 06:50 PM
The 99cc Predator would be the ticket for your target cruising as TheAleman has suggested, providing you can get one from outta state. You can just about do it with a 49cc, but only if ya do break the bank, at least a little bit.

dnut

Fuzzy79
01-29-2012, 06:55 PM
Yeah I would like to run bigger, cause bigger is always better, but having to get my m1 or m2 id somethimg I dont really want to do right now so 49cc is wherr I am at. But even 20-26 would still be scary enough as it is. Now I was reading in another thread, could either of those motors run a shifter kit, or any engine out there?

The_Aleman
01-29-2012, 07:00 PM
I have a shifter kit on mine. It doesn't affect top speed, only acceleration from a stop or uphill.
A shift kit takes some decent mechanical aptitude to install and maintain.

Fuzzy79
01-29-2012, 07:06 PM
Ok so the shifter kit, where would be a good place to look for them?

The_Aleman
01-29-2012, 07:10 PM
Only SickBikeParts and Staton carry shift kits for 4-strokes that I know of. SBP's is the most popular here, it's in-frame only.

Staton has a few different setups, but none of their in-frame kits are as compact as SBP's.

Fuzzy79
01-29-2012, 07:18 PM
So do the shift kits work like multi speed shifts on bikes, or like a dirt bike/quad, or even a suicide shifter

The_Aleman
01-29-2012, 07:26 PM
Well, the shift kits route the gearbox output through the bicycle's gears, so you shift it much the same as you would normally on a bicycle.
Let off on power, shift, get back on power - like a semi-auto. You can "power-shift" if you want, but it's not very good for components.

My SBP kit drives my 3-speed internal hub, and I'm very happy with how it works. It can take full-throttle shifts, but I don't do it anymore.

http://motorbicycling.com/picture.php?albumid=111&pictureid=3413

MotorBicycleRacing
01-29-2012, 07:39 PM
#98 Nashmoto's 50cc 4 stroke running a modified shift kit won the
50 cc 4 stroke race last Oct 22nd at Grange.
Also he came in 5th out of all the 66 cc Chinese kit bikes as
the 2 classes were run together.

Nashmoto is shifting through a NuVinci hub.

PS: He won a 4 Stroke shift kit from Sick Bike Parts as the first place prize
and the winner of the 2 stroke class got a shift kit too.

https://lh4.googleusercontent.com/-MGWLSn-M6bM/TrVBwp5oRYI/AAAAAAAAAJs/-nNEVSlQ-rU/s800/pits-18.jpg

https://lh6.googleusercontent.com/-jxzyJ8MYNn0/TrVBjSaTZAI/AAAAAAAAAGE/AoAkqlRWVRY/s800/pits-17.jpg

Fuzzy79
01-29-2012, 08:13 PM
Ok so a shift kit wouldnt matter on my single speed murry then

The_Aleman
01-29-2012, 08:21 PM
No, not unless you replace that single-speed hub with an internally geared hub. Also, you lose the ability to use a coaster brake with a shift kit.

Fuzzy79
01-30-2012, 12:08 AM
So that wouldnt bother me cause I wanted to switch to atleast a 3 speed rear anyways, and switch from the coaster brake to disks fromt and rear.

Fuzzy79
01-30-2012, 02:10 AM
So I have been looking into the honda gxh50, and huasheng 50 kits bit cant find kits in stock for less then $500, does anybody make kits for less?

GearNut
01-30-2012, 11:09 AM
The price tag of $500 is average. I highly recommend spending a little more and getting the EZM kit if you want to go the 49cc Huasheng rout. Just judging by what you expect out of it though you would be better off with the 99cc Predator though (or larger). They can run an EZM system with a little bit of easy modding. If overall width is not an issue for you, go with an AGK CVT system. For the record, I am building a 49cc Huasheng/ EZM kit right now. Legality was my final point on deciding.

Yeah I would like to run bigger, cause bigger is always better, but having to get my m1 or m2 id somethimg I dont really want to do right now so 49cc is wherr I am at. But even 20-26 would still be scary enough as it is. Now I was reading in another thread, could either of those motors run a shifter kit, or any engine out there?

As for needing an M1 or M2 endorsement on your license for legalities, you will need one of those no matter what size gasoline engine you choose to run, 2 stroke, 4 stroke or whatever. Electric is the mode of power that lets you skirt around that requirement.
I recommend going for the M1. It is just as much work to get as an M2 but it allows you to ride any MB, scooter, moped or motorcycle of any displacement.

Ibedayank
01-30-2012, 12:49 PM
If overall width is not an issue for you, go with an AGK CVT system.


AGK does NOT sell a cvt system for the 99cc pred motor they sell centrifical jackshaft kit that uses a chain

Jackshaft Assembly for 79cc HF & 99cc Predator
http://www.affordablegokarts.com/mm5/graphics/00000001/js-assembly.gif

CVT on a motorized bicycle
http://www.motorbicycling.com/picture.php?albumid=527&pictureid=2712
pic shamelessly borrowed from Scotto

Fuzzy79
01-30-2012, 05:18 PM
Agk is affordable go karts right?

Ibedayank
01-30-2012, 05:22 PM
https://www.affordablegokarts.com/mm5/merchant.mvc?Session_ID=9f48e27482c2c9ff851783bc3b b5c94d&Screen=PROD&Store_Code=A&Product_Code=2600&Category_Code=99cc

Fuzzy79
01-30-2012, 05:31 PM
Has anybody put some a 125 shifter kart motor and trans in a bike, or would that be to wide

Greybeard
01-31-2012, 02:30 PM
https://www.affordablegokarts.com/mm5/merchant.mvc?Session_ID=c95ae980f41d2d58b076d9c218 35884b&Screen=PROD&Store_Code=A&Product_Code=GTC100*&Category_Code=PCJ

Ibedayank
01-31-2012, 02:58 PM
to bad the 99cc is 5/8 shaft NOT 3/4 shaft like the cvt AGK sells
only driven clutch that was 5/8s shaft was comet 316 series and it is no longer made


so AGAIN the jackshaft kit is the only thing that AGK sells that is made for the hf 99cc pred motor

MotorBicycleRacing
01-31-2012, 03:16 PM
so AGAIN the jackshaft kit is the only thing that AGK sells that is made for the hf 99cc pred motor
AGK raced a 79 cc HF motor with a 2 speed gearbox at the last
Grange race. The bike was faster than the 5 HP Briggs bikes.

Affordable Go Karts will be at next April 7th Grange race with a
99 cc HF Predator with the same 2 speed so it will be very
interesting to see how it performs.

Ibedayank
01-31-2012, 03:26 PM
AGK raced a 79 cc HF motor with a 2 speed gearbox at the last
Grange race. The bike was faster than the 5 HP Briggs bikes.

Affordable Go Karts will be at next April 7th Grange race with a
99 cc HF Predator with the same 2 speed so it will be very
interesting to see how it performs.

if they SELL it post a link for it Neil if you could

MotorBicycleRacing
01-31-2012, 03:37 PM
if they SELL it post a link for it Neil if you could
AGK is still testing the 2 speed but said that it would be for sale soon.

Ibedayank
01-31-2012, 03:46 PM
Neil

does that 2speed work like the old comet 2speed jackshaft that used 2 chains coming off the centrif clutch so that at only shifts when going WFO.
or act more like a cvt?

Greybeard
01-31-2012, 03:57 PM
http://www.gsistore.com/5idx3odshadb1.html

Ibedayank
01-31-2012, 04:09 PM
http://www.gsistore.com/5idx3odshadb1.html

does AGK sell it or the extra tall keystock
how about the bolt and washer that holds
the driven side to the motors output

if AGK has tested it and approved it why is it not in the 99cc section?

Greybeard
01-31-2012, 05:47 PM
If I read this correctly, you have a choice of 5/8th or 3/4". I was wrong,but see below link
http://www.ebay.com/itm/Comet-30-series-torque-converter-kit-replacement-TAV2-/330672682570?pt=Go_Karts&hash=item4cfda0b64a
At least one vender has a 5/8ths driver for the Comet 30
http://www.ebay.com/itm/Go-Kart-Torque-Converter-Driven-Unit-5-8-bore-6-diameter-Replaces-TAV-2-/230739641231?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA% 252BUA%252BFICS%252BUFI%26otn%3D21%26pmod%3D360429 010649%26ps%3D54

tn97kouki
01-31-2012, 07:14 PM
Greybeard , I believe both of the ones you posted links to are the rear pulley , not the one you would mount to the crankshaft .

Greybeard
01-31-2012, 07:20 PM
You are so right. My bad. It's what you get when you are in a hurry.

Fuzzy79
02-01-2012, 03:40 PM
There is really no way to make a 212 predator fit into a bike

Ibedayank
02-01-2012, 07:11 PM
There is really no way to make a 212 predator fit into a bike

REALLY..... well you may want to tell this guy that its not a harbor freight 212cc predator motor that he HAS in his bike
http://motorbicycling.com/showthread.php?t=36379

or this Guy with a even bigger twin cylinder Briggs

http://motorbicycling.com/showthread.php?t=32428

you might want to read some of the builds done by people on this site before making statements you can't back up

MotorBicycleRacing
02-02-2012, 04:06 AM
does that 2speed work like the old comet 2speed jackshaft that used 2 chains coming off the centrif clutch so that at only shifts when going WFO.
or act more like a cvt?
Sorry, I don't know too much about the details.

Here is a pic of AGK's 79 cc 2 speed race bike from their facebook page. (http://www.facebook.com/AGKarts?sk=wall)

http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/308566_207874232618982_146680432071696_531187_4959 16300_n.jpg

http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/380799_245631335509938_146680432071696_634993_5695 36995_n.jpg

MotorBicycleRacing
02-02-2012, 04:09 AM
There is really no way to make a 212 predator fit into a bike
There are at least 6 200 cc - 212 cc race bikes coming to the next
Grange race on April 7th

Here are 2 from AGK
The one in the back makes about 20 HP

http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/302274_207875039285568_146680432071696_531189_1334 306222_n.jpg

Velodrome
02-02-2012, 04:14 AM
There is really no way to make a 212 predator fit into a bike

Errr.. You might want to do a bit more searching round this site before sayin stuff like that. Its been done.. a lot.

scotto-
02-02-2012, 04:39 AM
There is really no way to make a 212 predator fit into a bike

IDK......mine seems to fit quite nicely ;)

http://img16.imageshack.us/img16/9499/img0756mc.jpg (http://imageshack.us/photo/my-images/16/img0756mc.jpg/)

http://motorbicycling.com/showthread.php?t=32789

dnut

Ibedayank
02-02-2012, 04:44 AM
looks like AGK is using something like this to get 2 speeds
its not a new idea was used on rupp minibikes in 1968

BarelyAWake
02-02-2012, 04:45 AM
o.O

I think he's gotten the point, that ya can just stuff a 212 predator fit into a bike - TBH if I hadn't seen it done here, I prolly woulda said the same... should it be done is another question entirely tho lol :p

andrewflores17
02-02-2012, 09:28 PM
rode over the local harbor freight a whole 1.5 mile trip .

bought some ods and ends but if you see the 212cc in person its alot smaller than you would think very wide though i think .

for me you leave the realm of motorized bicycle after 99cc and are makeing a custom motorcycle. just my .02

Fuzzy79
02-03-2012, 01:09 AM
Yes I deffinatly got the point, that the 212 looks beautiful in a beach cruiser. And you can go crazy fast on them to boot. I think I may have found my motor I am gona use on my bike.

scotto-
02-03-2012, 01:47 AM
rode over the local harbor freight a whole 1.5 mile trip .

bought some ods and ends but if you see the 212cc in person its alot smaller than you would think very wide though i think .

for me you leave the realm of motorized bicycle after 99cc and are makeing a custom motorcycle. just my .02

It is rather wide indeed.........14" to be exact from the left side CVT cover, to the right side re-coil starter cover. You hardly notice the width when you take off with the front wheel aiming for the sky as you're sliding off the back of the saddle doing mach II from a stand still........;)

dnut

MotorBicycleRacing
02-03-2012, 11:33 PM
looks like AGK is using something like this to get 2 speeds
its not a new idea was used on rupp minibikes in 1968

http://tomahawktuning.files.wordpress.com/2011/10/pa211245.jpg?w=550

Ibedayank
02-04-2012, 12:01 AM
http://tomahawktuning.files.wordpress.com/2011/10/pa211245.jpg?w=550

http://i273.photobucket.com/albums/jj225/juiced408/minibike/SAM_0271.jpg

like I say its not a new idea

Fuzzy79
02-04-2012, 12:35 AM
Trying to not sound like a complete noob, but how does that system change gears I see no shifter or linkage to change the gears, especially on the pic of the pup

Ibedayank
02-04-2012, 12:44 AM
The clutch on the engine simply has two sprockets on it. theres no direct drive off the engine. One chain goes to the one way clutch and the other goes to the clutch on the jackshaft. the one way clutch is first gear. the clutch on the jackshaft is second gear which has its sprocket on the weight side and the bell is solid on the shaft. when the speed gets high enough on the jackshaft the weights solid up second gear which frespins 1st and off you go.