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Post by pitobread on Oct 26, 2019 0:09:09 GMT -5
The past 6 months of my life have been rough. I needed a cheap project to take my mind off life in general. Cue my $100 dollar hobbit. Its a 1979 PAII. It's really rusty... Someone has beaten the snogg out of it mechanically. It's perfect. I did a lot of research on mopeds and the Hobbit is probably far an wide the best option for nuts out modding.. there are lots of mods for MBK and others but the hobbit uses a simple scooter like variator and the engine is Honda and lots of stuff bolts up to the cases. Problem is though there is only one crank for it. And if you use this crank then you are stuck with the variator on the Hobbit. I am going to change all that. After a lot of measuring I found that a Piaggio crank is a really close fit to a PA50 crank. The width are 1.595 for the piaggio and 1.615 for the hobbit.. and the hobbit uses a .020 gasket in between the case halves. So I stuffed one in there, the Piaggio seal on the flywheel side fits in the middle bore after you cut it down.. it was meant to be. The other side I did use the 30x19x7 Piaggio seal, but a 27x19x7 seal would be better. Next up I used a Stage6 Speedfight modular race cylinder I had sitting in storage(they discontinued this kit!) I had to weld the shit out of the cases and will have to port like crazy. I got the MHR Team ignition to fit in the space
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Post by pitobread on Oct 26, 2019 0:22:49 GMT -5
Parallel to this, I have been working on the transmission. It uses a odd rear pulley setup and the clutch is up on the crank.. I want to make it run a normal front variator, so the rear needs a clutch. I machined out the rear housing to put a 6003 bearing, then after some trickery machined off the front half of a Piaggio input shaft and added it to the nubbing of the Hobbit. This let me put a Honda pulley setup on with a proper clutch. I could have use the Piaggio but it uses a 18mm belt thats hard to source in other sizes. I also deleted the pedal mode and plugged the hole in the shaft
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Post by jbjhillbilly on Oct 26, 2019 1:12:02 GMT -5
Holy crap! That’s a lot of modding. This better be awesome for all the work you’re putting into it .
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Post by birdman on Oct 26, 2019 1:35:08 GMT -5
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squab50
Scoot Member
Posts: 21
Location: lower saxony, germany
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Post by squab50 on Oct 26, 2019 3:38:51 GMT -5
Very interesting. Have a Honda Camino in the shed for years. Had bad piston rings. Maybe sometime....
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Post by Happypancake! on Oct 26, 2019 5:50:42 GMT -5
The past 6 months of my life have been rough. I needed a cheap project to take my mind off life in general. Cue my $100 dollar hobbit. Its a 1979 PAII. It's really rusty... Someone has beaten the snogg out of it mechanically. It's perfect. I did a lot of research on mopeds and the Hobbit is probably far an wide the best option for nuts out modding.. there are lots of mods for MBK and others but the hobbit uses a simple scooter like variator and the engine is Honda and lots of stuff bolts up to the cases. Problem is though there is only one crank for it. And if you use this crank then you are stuck with the variator on the Hobbit. I am going to change all that. After a lot of measuring I found that a Piaggio crank is a really close fit to a PA50 crank. The width are 1.595 for the piaggio and 1.615 for the hobbit.. and the hobbit uses a .020 gasket in between the case halves. So I stuffed one in there, the Piaggio seal on the flywheel side fits in the middle bore after you cut it down.. it was meant to be. The other side I did use the 30x19x7 Piaggio seal, but a 27x19x7 seal would be better. Next up I used a Stage6 Speedfight modular race cylinder I had sitting in storage(they discontinued this kit!) I had to weld the shit out of the cases and will have to port like crazy. I got the MHR Team ignition to fit in the space I'll take the blame. I've been creeping on you on Insta. I'm in for the ride!
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Post by oldgeek on Oct 26, 2019 8:49:30 GMT -5
Your 1 off builds are really 1 off! Hope life gets easier for you soon.
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Post by aeroxbud on Oct 26, 2019 20:14:15 GMT -5
Another top notch build. Hope things improve for you soon.
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Post by jloi on Oct 31, 2019 11:41:19 GMT -5
Man, wow. you guys blow my mind with what you do.
if I only had a shop I could waste $k's and destroy lots of parts before I get to your levels
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Post by pitobread on Nov 3, 2019 13:14:33 GMT -5
s.click.aliexpress.com/e/CVcSXh36This guys store has the Jialing JL50 clone hobbit kickstart in his store for 36USD + shipping.. he also has the new style variator and new gastanks.
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Post by Happypancake! on Nov 3, 2019 15:27:09 GMT -5
s.click.aliexpress.com/e/CVcSXh36This guys store has the Jialing JL50 clone hobbit kickstart in his store for 36USD + shipping.. he also has the new style variator and new gastanks. nice!
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Post by Happypancake! on Nov 14, 2019 20:39:30 GMT -5
Updates? ??
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Post by pitobread on Nov 15, 2019 2:47:51 GMT -5
OK. I have a final prototype. Metal soon.
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Post by 190mech on Nov 15, 2019 4:56:18 GMT -5
AWESOME and GNARLY !!!
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Post by aeroxbud on Nov 15, 2019 5:06:12 GMT -5
I like it!
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