If you had $300 and a mountain bike...

[TWalker]

For $300 you will almost have to go with a 70cc chingen set up, you'll have $100 left over.

A shifter kit alone is $200.

The next step up and it is a big step up is a Staton friction for $400.

 

[ozzyu812]

The jackshaft at sickparts.com and HT from Dax. It may be slightly over $300.

 

[xlastshotx]

hm, well I guess for now I don't really have any other option than a HT motor. Later on I will get the shifter kit to go with it. Now I just have to figure out who to order the HT kit from..


Oh and does anyone know what is up with the engines that this company has??

>There motor selections<

I mean jeese, some of these engine push out 3+ hp and cost much less than any of the "bicycle'' motors that I have seen, and they have inexpensive and fast shipping.... Why wouldn't one of their motors work?

This motor> here< would be awesome... unless there is something I am missing here.

 

[ozzyu812]

..........DAX!
I dont personally have a HT. But when I get one I'm goin' with the best. Thats a DAX. If 50t sprocket doesn't pull you up a hill like you want you can get a bigger one from Andy, of custom sprockets.

 

[xlastshotx]

..........DAX!
I dont personally have a HT. But when I get one I'm goin' with the best. Thats a DAX. If 50t sprocket doesn't pull you up a hill like you want you can get a bigger one from Andy, of custom sprockets.

So far everything that I have read about HT motors has basically been that they are all basically the same.. Chinese and not the most reliable things but fun to tinker with and inexpensive. I would buy it from DAX in a heartbeat if they didn't have that weird "Expedite" thing that bumps the price up to $277.00.. basically it seems like I am going to have to call around and figure out which place can get me the motor within a week, and not charge me $60 dollars extra to do it.

BUT...

I am really tempted to get this bb88x - GP460 4.2+ HP Engine w/Inner Clutch for $262 shipped (and it will arrive within 5 days.)... Why can't this motor be used as a bicycle motor? Couldn't I just get a HT sprocket mount this motor to a rear rack and run a chain from it to the sprocket? or is there something really different about this motor?


edit**

I just found someone who did exactly what I am talking about with that exact engine and a DDM Dominator pipe...

They used a GEBE Drive and I think they used a GEBE mounting kit as well.

 

[ozzyu812]

I assume this is your 1st build? I would follow the K.I.S.S. rule.( Keep It Simple Stupid) Get one the road. That engine certainly looks nice! I think there is more than meets the eye with fuel delivery in that pic. Plan on using that for your second build. All HT are basically the same what sets a Dax apart is the customer service. That extra $60 is a bummer, but I would still buy from them. Another thing, the sickparts set up adds to the life of a HT. Because you don't have to run the thing WOT. (Wide open throttle)

 

[loquin]

The happy time engines have an internal 5:1 (apx) gear reduction, which allows the output shaft to run at a slow enough speed so that you can run a chain from the output directly to the rear sprocket. Pocket bike/scooter engines do not have that internal reduction. Some of them have a 3 to 1 external gearbox, but, then you would need a 60-70 tooth rear sprocket. (@ 300 RPM, on a 26 inch wheel, your rear axle will be spinning at a rate that will push you at apx 23 mph, @ 400 RPM, 31 MPH)

Now, the sick bike parts jackshaft setup is designed to step the engine rpm down to about 100 RPM at the peddle. SO, you have reduction from the engine output shaft to the jackshaft input sprocket, and then from the small output jackshaft sprocket to the freewheel sprocket on the peddle. The total reduction is in the neighborhood of 60:1.

 

[loquin]

BTW. Here's the link to an alternate friction drive maker. The hardware looks pretty sturdy. They do not sell motors with their kit; apparently they assume that you can get one online for less than they can stock them.

It has some nice features, and appears to be similar to the Staton kit in a lot of ways.

The first difference is that the staton kit comes with a sort of bell housing over the clutch bell. This one uses standoffs, and leaves the centrifugal clutch bell exposed. (it probably gives a little better cooling, though)

The second difference is this friction roller has a built-in rachet mechanism, so that it freewheels. Also, an advantage (if it is reliable...) However, the friction roller uses a pair of set screws to lock to the drive shaft, which might tend to slip...

For $189 + $10 shipping, you could do worse. Add a mitsubishi clone pocket bike motor, and you could get on the road for close to your budget.

 

[TWalker]

So far everything that I have read about HT motors has basically been that they are all basically the same.. Chinese and not the most reliable things but fun to tinker with and inexpensive. I would buy it from DAX in a heartbeat if they didn't have that weird "Expedite" thing that bumps the price up to $277.00.. basically it seems like I am going to have to call around and figure out which place can get me the motor within a week, and not charge me $60 dollars extra to do it.

BUT...

I am really tempted to get this bb88x - GP460 4.2+ HP Engine w/Inner Clutch for $262 shipped (and it will arrive within 5 days.)... Why can't this motor be used as a bicycle motor? Couldn't I just get a HT sprocket mount this motor to a rear rack and run a chain from it to the sprocket? or is there something really different about this motor?


edit**

I just found someone who did exactly what I am talking about with that exact engine and a DDM Dominator pipe...

They used a GEBE Drive and I think they used a GEBE mounting kit as well.

First off just a GEBE drive is what $300? Then start adding in the cost of your engine, time for putting it all together and you well over $500. That pic you sent is a nice set up but its not $300.

The engine you like is a great engine, in fact I want to build one of those next, but its not a matter of just connecting to an HT sprocket and being done. You will need a drivetrain, aGEBE or Staton could work but either of those drives takes your whole budget.

 

[xlastshotx]

Aw man I didn't think that the GEBE engine mounting kits would be that much..

Maybe I could just get that engine and mount it using hopes and dreams?


lol, or I guess I could just bite the bullet and go with a china motor and get the shifter kit a little bit later on.