|
Post by phatboy on Feb 20, 2020 14:24:33 GMT -5
Hey guys, been searching for days and coming up empty on finding a JOG 90 long case, then I found this: It appears to be "long" like a long case but gearbox is set up like a short case, looks like it would have to use a longer belt and special CVT cover (which is of course not included, might be really hard to track down, but could run without the cover maybe?) Anyone have experience with this kind of motor and did it work in a long case frame, would any parts from my 50cc long case bolt up? This is the most complete motor I have found from endless searching.
|
|
|
Post by benji on Feb 20, 2020 16:34:09 GMT -5
Hey guys, been searching for days and coming up empty on finding a JOG 90 long case, then I found this: It appears to be "long" like a long case but gearbox is set up like a short case, looks like it would have to use a longer belt and special CVT cover (which is of course not included, might be really hard to track down, but could run without the cover maybe?) Anyone have experience with this kind of motor and did it work in a long case frame, would any parts from my 50cc long case bolt up? This is the most complete motor I have found from endless searching. I'm pretty sure one of my zumas came with this same motor. Chines longcase, basically a shortcake with the end flipped around to make it long enough for a 12" wheel. You may notice you'll have to put new grooves in your mount tube to position it correctly. Also, I think most of these have 10:1 or 11:1 gears. Most people say these blocks are best if your gonna go 90cc cuz the case is thicker.
|
|
|
Post by ryan_ott on Feb 20, 2020 16:46:36 GMT -5
That’s from an ATV given the extra mount at the rear, maybe an Adly... if that’s the case the belts are a odd size and check what kind of output shaft you have before purchase to make sure you won’t need additional gear sets.
|
|
|
Post by phatboy on Feb 20, 2020 17:40:02 GMT -5
Thanks, so maybe this engine isn't that rare? Yeah it is from an ATv, it has a sprocket on the output shaft so I would need to replace it, and I don't think my existing gear set is compatible so I would need gears, but looks like it may use standard short case gears so I should be able to find them easily enough.
I don't mind getting a longer belt, they are cheap enough, I just want to ensure most of my other parts will swap over like the clutch, variator, stator, the stator fan shroud, starter motor and all that because this engine is missing a lot of external parts
So that extra mount on the back, does it come off or otherwise won't get in the way?
|
|
|
Post by ryan_ott on Feb 20, 2020 18:01:07 GMT -5
The only thing different as far as the accessories go is you’ll probably need a 16mm boss variator, the usual 90 stuff. Gears it’s hard to say... not sure what’s in there. That extra mount should unbolt from the inside of the trans cover and it should go through the brake pivot pin. You’ll also need the brake parts.
|
|
|
Post by 190mech on Feb 20, 2020 18:04:12 GMT -5
Right,that is an Adly setup,you'll need a scoot short case gearbox and longer belt..Can be found as CanAm parts also..Here is a set of 50 cases I got and cut to 90 size; Why not just cut your existing cases to 90 size and have a nice torquey streeter?
|
|
|
Post by phatboy on Feb 20, 2020 19:54:05 GMT -5
I wasn't aware you could cut your existing case to get 90cc (I assume, it's for a stroker crank). Is there a tutorial on this somewhere?
|
|
|
Post by Zino on Feb 20, 2020 20:17:57 GMT -5
I think phatboy is catching the scooter upgrade addiction
|
|
|
Post by repherence2 on Feb 20, 2020 20:45:59 GMT -5
My 94cc engine started of as an 82cc yamaha ATV engine. 50mm cast bore with 41.2mm stroke. I know it was not for a scooter because it did not come with the rear drum brake assembly (brake shoes, pin, cam, and lever).
My Chinese 2 stoke scoot came from the factory with 12 pin, large spline, large taper crank. That allowed for my CVT parts to cross over from the Chinarelli to the big block.
P.s. Do NOT run your engine without the CVT cover. The rear pulley shaft will only be supported by 1 bearing instead of 2 (the CVT cover has a bearing to support that shaft.)
|
|
|
Post by 90GTVert on Feb 20, 2020 23:41:43 GMT -5
I wasn't aware you could cut your existing case to get 90cc (I assume, it's for a stroker crank). Is there a tutorial on this somewhere? 49ccscoot.proboards.com/thread/10392/cutting-cases-accept-cranks-matchingPlus you can just buy these in 90cc form from ATVs. I don't mind getting a longer belt, they are cheap enough, The belt is the weakness of these setups to me. If you want to use a nearer to stock CVT, then it's not a deal breaker. If you build something and end up with an over range, I don't know what belt fits in that case. Before you decide, source belts for this. IIRC it's 878-17-28 (standard 1E40QMBs usually do well with 788-17-28 for comparison). Remember that you don't want just any belt. I know Naraku sells one for about $30. Don't know if Naraku belts are any good TBH. OEM replacements often go for $50. You don't want to plan on using junk belts. Not saying Naraku is, but find this stuff out before you dive into it.
|
|
|
Post by phatboy on Feb 21, 2020 13:01:40 GMT -5
My 94cc engine started of as an 82cc yamaha ATV engine. 50mm cast bore with 41.2mm stroke. I know it was not for a scooter because it did not come with the rear drum brake assembly (brake shoes, pin, cam, and lever). My Chinese 2 stoke scoot came from the factory with 12 pin, large spline, large taper crank. That allowed for my CVT parts to cross over from the Chinarelli to the big block. P.s. Do NOT run your engine without the CVT cover. The rear pulley shaft will only be supported by 1 bearing instead of 2 (the CVT cover has a bearing to support that shaft.) Thanks, good to know, I ran my 50 without a cover for a while to do the Sharpie test on the variator, hope I did not damage anything. I don't think I will buy this engine without a cover, sounds like it would be really hard to find
|
|
|
Post by 90GTVert on Feb 21, 2020 13:48:36 GMT -5
I don't think I will buy this engine without a cover, sounds like it would be really hard to find www.adlyparts.com/atv-parts/atv-parts-adly/adly-atv-90cc-2t/adly-atv-90cc-2t-crankcase/left-crankcase-cover-11341-116-00b.htmlSometimes they come up on eBay used. Here's a list that I put together of the stretched short case style engines. Can be helpful when searching for parts. Adly Moto/Her Chee Scooters : Bullseye 50, Cat 50, Fox 50, GTA 50, GTC/Nifty 50, Jet 50, Noble 50, Panther 50, Thunder Bike 50, Thunder Bike 100, Viva 50 Adly Moto/Her Chee Youth ATVs : ATV 50, ATV 90 Arctic Cat Youth ATVs : DVX 50, DVX 90 Can-AM/Bombardier Youth ATVs : DS 50, DS 90 Lambretta Scooters : Uno 50
|
|
|
Post by phatboy on Feb 21, 2020 14:44:55 GMT -5
OK thanks. looks like the ebay seller did have a cover for this but it sold like two days ago, must be in high demand! This is the ebay link to that engine: www.ebay.com/itm/2001-ZYCO-90-ADLY-HER-CHEE-Engine-Motor-GREAT-RUNNING-90cc/303374748193?hash=item46a28b4a21:g:~y8AAOSwTvNd2DtKPrice is a bit high for me considering shipping and all the extra things it might need to make it work for me. I think my new goal is to bbk and gear my current engine, and search for a long case 50 I can cut and build to ~100cc in my spare time, to eventually swap over. I watched the videos and looks like I can do this with my Dremel if I am careful and patient (correct me if I am wrong!)
|
|
|
Post by geoffh on Feb 21, 2020 15:44:40 GMT -5
I have to ask!! Phat boy what are you trying to achieve!! what platform are you working with,aims hopes etc,we enjoy a challenge.
Geoff
|
|
|
Post by phatboy on Feb 21, 2020 17:12:39 GMT -5
Hi,
good question. I live in a smallish coastal town a 5 miles across, has some hills and a 35 mph speed limit. The scoot is acceptable in town right now but I can't leave town at all unless I drive my car.
There are several really nice windy country roads just outside town with 45 mph speed limit, and have little traffic. Some are a bit hilly. These will be awesome to ride on when the weather warms up a little but right now the scoot is much too slow for these roads. My first goal is these roads but the scoot really needs to be hitting 50+ first. I am hoping a bbk+gears would be adequate for this.
Next step, the next towns are 5 miles apart and down the coastal highway, 55 mph speed limit. You really have to be able to go 60+ to get to the next town over, that would be a goal for a 100cc+ build.
|
|