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shwnrttr
09-14-2012, 08:24 PM
http://www.harborfreight.com/79-cc-ohv-horizontal-shaft-gas-engine-69733.htmli went ahead and ordered this 79cc predator engine from HF.
if you search the site you will not find this item. the only way to find this item is to put the item number in the search box. so i decided to order this item. every thing seemed to go through OK, it said it was in stock,i checked out and confirmed my order. the next day i went on the site to check my order status.when i enter my order number it said ''enter valid order number''. so im not sure whats going on. if anyone has any info on this item or the status of this item on HF let me know. if i dont find anything out by monday i will call them.

GearNut
09-14-2012, 08:27 PM
From what I have read, HF is still in the process of changing out the 99cc for the 79cc.
The 79cc is still in "digital limbo", the 99cc is obsolete.
Good luck with your order and do not hesitate for one second to call them if need be.

JonnyR
09-14-2012, 08:31 PM
i would have been on the phone as soon as i saw that

rustycase
09-14-2012, 09:27 PM
Yah, just call Marisol and ask her if it has shipped...
rc

shwnrttr
09-15-2012, 12:58 AM
i tried calling but it was past there hours of operation. guess il have to wait til monday. il keep you guys posted on what happens.

maurtis
09-15-2012, 12:40 PM
I wish I knew a little more about these motors vs the 99cc. I was thinking about going with the 99cc Preddy for a build but had not planned on doing it yet. Wondering if it would be a good idea to see if my local HF has any in stock and snap it up before they completely disappear.

Or if there is something about the 79cc that would make it better for a bike. If the dimensions are the same and just the stroke and bore are different, seems like the 99cc would be the way to go?

GearNut
09-15-2012, 01:23 PM
From what I have read, they are both rated at the same power output. If this is true, the 79cc would be operating more efficiently.

Ludwig II
09-15-2012, 04:44 PM
The same power for a smaller capacity always indicates to me that that power lives further up the rev range. I'd check where peak torque is in the range for each of them for a start. A big lazy engine demands less of the rider than a little buzzy one.

GearNut
09-15-2012, 06:50 PM
In this thread (http://motorbicycling.com/showthread.php?t=41899) pocdragon has photos of both the 99cc and 79cc boxes with the specifications.
They are identical for the torque ratings at the exact same RPM's.
Horsepower may be at a different RPM but that is not listed, although they both are advertised at same horsepower rating of 2.5.

shwnrttr
09-15-2012, 07:25 PM
well,HF sent me a message early this morning. saying that they where having some technical difficulties and apologized. and stated they corrected the issue and sent me the correct order number. it said i should receive a confirmation email when it ships out. so everything seems like alright now.

Ludwig II
09-16-2012, 04:39 AM
Very interesting info on the boxes. Identical in power and torque, weight, sizes but less bore and stroke. I wonder how they're doing it?

shwnrttr
09-17-2012, 08:09 PM
my order went through, my new 79cc predator, it will be here wednesday. cant wait. tracking it with fed-ex.

Dan
09-17-2012, 08:16 PM
Ah cool Shwnrttr.

ocho ninja
09-17-2012, 11:03 PM
Are they going to be legal in California ?.shft.

JonnyR
09-17-2012, 11:11 PM
i was going to go harbor freaght motor for my next bike lots of cool things you can do to them for more power and RPMs but its heavy and i hear alot about vibration in the upright 4 strokes. so moving in a new direction 2-3x the money though.
might need to get a HF motor for something else though i want to try some of the performance parts and my cousin still has his go-cart :)

Dan
09-17-2012, 11:40 PM
I have never had any problems with any HF engines and excessive vibes. Not saying it is a Honda but really was never a problem.

One thing about em, they just can't climb;

http://s293.photobucket.com/albums/mm48/dan3xd/Vids/?action=view&current=1113001157.mp4

JonnyR
09-17-2012, 11:46 PM
I have never had any problems with any HF engines and excessive vibes. Not saying it is a Honda but really was never a problem.

One thing about em, they just can't climb;

http://s293.photobucket.com/albums/mm48/dan3xd/Vids/?action=view&current=1113001157.mp4

lol where you trying yo get it to "walk" up the curb?

Dan
09-17-2012, 11:57 PM
LOL Jonny. The break-in for them is (according to the manual) 20 hrs of easy running. So I take it out of the garage, set it down on the driveway and fire her up. Dang thing starts up hill and tries to get back in the garage.

This was a while back and I made the same dumb joke about HFs not being able to climb. It accidently started a rumor about em. Gotta love the internet.

But truth be told, couldn't make it over a 1 inch lip and get back in the garage. (snork)

GearNut
09-17-2012, 11:57 PM
LOL Dan! That is an interesting method of getting propulsion out of an engine.
I bet the chassis, wheels 'n stuff last a looong time.

JonnyR
09-18-2012, 12:00 AM
lol i love it
these motors are ridiculous cheap so it is a good option for a go carting project for my future project i am wanting to use a 110cc loncin and a stretch frame

GearNut
09-18-2012, 12:03 AM
Stuff the Loncin in the go kart, Shifter karts are a blast to drive!

JonnyR
09-18-2012, 12:04 AM
i want a 70MPH bike though and its one of the best ways i have found

scotto-
09-18-2012, 01:43 AM
i want a 70MPH bike though and its one of the best ways i have found

IDK.......it's not to difficult to gear a 212cc HF Pred to go 70+ mph. I've had mine up to 65mph on flat ground recently. Ya really think ya wanna go 70mph on a bicycle? 65mph is plenty fast......on a bicycle!

I just recently bought two new HF 4-strokes, a 212cc and a 99cc for less than 240 bux out the door........I consider this money well spent when it comes to motorizing bicycles.

dnut

JonnyR
09-18-2012, 02:05 AM
for real what kind of a CVT or jackshaft and gearing do you use?

shwnrttr
09-19-2012, 01:17 PM
just got my 79cc pred. it looks really nice. so dont be scared to order from the HF link. http://www.harborfreight.com/79-cc-ohv-horizontal-shaft-gas-engine-69733.html

Ludwig II
09-19-2012, 01:52 PM
This using vibration to move things uphill, there are lots of feed devices in industry that make raw materials or small parts climb onto the next stage by using vibrating hoppers.

atombikes
09-21-2012, 08:58 AM
just got my 79cc pred. it looks really nice. so dont be scared to order from the HF link. http://www.harborfreight.com/79-cc-ohv-horizontal-shaft-gas-engine-69733.html

The drawings in the owners manual available at the link you provided sure do look like the Greyhound 79cc from a couple years back... The only difference I see immediately would be the engine mounting; the new engine uses the Predator style mounting adapter plate whereas the Greyhound you bolt directly into the bottom of the engine.

scotto-
09-21-2012, 06:17 PM
for real what kind of a CVT or jackshaft and gearing do you use?

Yes, for real.....it looks something like this:

http://i1250.photobucket.com/albums/hh533/scotto-/460b6608.jpg
http://i1250.photobucket.com/albums/hh533/scotto-/4de2ba9d.jpg
http://i1250.photobucket.com/albums/hh533/scotto-/ca5f50db.jpg

dnut