Rieju 50cc conversion

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
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eee291   10 kW

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Re: Rieju 50cc conversion

Post by eee291 » May 13 2019 10:48pm

Sweet 8)

What's the top speed gearing on your moped?

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » May 13 2019 11:43pm

110km/h (when not restricted)
22/105 gearing
17" tires
Last edited by larsb on Sep 26 2019 12:38pm, edited 2 times in total.
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larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » May 21 2019 1:03pm

That was short :( .. The controller stopped today when i was out driving. Turns out that the max battery current possible in APT AE96600 program is 250A, the only reason i got higher reading on the BMS is that the current sensor seems to have gone wack. It showed erratic reading in the program and eventually reading died completely. Now motor only twitches at throttle.
Last edited by larsb on Jun 22 2019 3:54pm, edited 2 times in total.
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eee291   10 kW

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Re: Rieju 50cc conversion

Post by eee291 » May 21 2019 2:07pm

Ouch.. another one bites the dust.

I think it's worth looking into something better like the Nucular or Besc project.

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » May 21 2019 2:30pm

I'll try the Votol again, if it's the same for me as johnnydrive then the problems were caused by the old program. We'll see!
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larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » May 25 2019 4:19pm

I later saw that controller was showing hall sensor error, i checked and one hall is dead..
Water has leaked into motor and there's salt and muck on the PCB.
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I'll try to switch to new halls or a new PCB from QS.

There's a magnet ring behind the pcb that's also quite corroded, the rotor might also be affected. I wonder if this might be the start of the end of this motor..
Last edited by larsb on May 28 2019 1:09am, edited 1 time in total.
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fechter   100 GW

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Re: Rieju 50cc conversion

Post by fechter » May 27 2019 9:50pm

That looks ugly.

Any idea where it leaked in? This is one of the constant challenges with bike design. Totally sealed tends to be bad because water can't escape, but you need to keep it out in the first place. Potting won't work on moving parts.
"One test is worth a thousand opinions"

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » May 27 2019 11:58pm

I guess water got in the seam of the opening in the picture or through the side covers. It was not sealed at all and since we have about 3 months of rain in the winter it gets sprayed a lot. I'll do a splash cover when i get the time.

QS will send a free pcb to replace it :thumb:
Last edited by larsb on May 28 2019 1:54pm, edited 2 times in total.
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fechter   100 GW

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Re: Rieju 50cc conversion

Post by fechter » May 28 2019 7:51am

Nice on the new board. It looks like the water pooled up inside the compartment. A small drain hole on the bottom might be a good thing. If the magnet is not too damaged, you could coat it with epoxy to prevent further corrosion.
"One test is worth a thousand opinions"

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 22 2019 11:15am

I soldered new smt halls on the board even though i got a spare board from QS. Fiddly work but i got it done in the end.

The APT controller started working with the new halls but it died completely after i had a session where i tried every way to set field weakening parameters and program got corrupted..

Reason was that I tried all the programs i had access to even despite different versions.. I would advice anyone against using the xxxxx.7 program as the readouts going from ver .10 to .7 are totally wrong.

I gave up on the brick and changed to the Votol EM150 controller.
Last edited by larsb on Jun 22 2019 3:58pm, edited 3 times in total.
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larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 22 2019 2:10pm

Some pictures of the build.. I'm happy with the way the moped turned out even though the new batteries are a bit boxy :D

Smart BMS on top and one LG battery module per side. DIY Alu/carbon battery covers
Votol controller behind/below batteries in these pics.
Pirelli CT Angel 100/80R17 front tyre
Pirelli CT Angel 130/70R17 rear tyre
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Last edited by larsb on Nov 28 2019 1:22am, edited 5 times in total.
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eee291   10 kW

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Re: Rieju 50cc conversion

Post by eee291 » Jun 22 2019 2:37pm

Looks like a total beast. I need to get off my ass and start on mine :D

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 23 2019 4:09am

Sure think so! :D

It is a nice ride now. Only thing to improve is the front suspension, it is worn out after 20 years.. Only wish it wasn't so expensive. I'd also need stiffer setup than the original since I weigh a bit more than the average teen.
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madin88   100 MW

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Re: Rieju 50cc conversion

Post by madin88 » Jun 23 2019 7:22am

How much do these moped forks cost?

Congrates on the nicely done battery cases. It looks bad ass with that big motor and belt drive. :thumb:
Have you thought about trying to make it again street legal or at least check how much it would cost?

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 23 2019 7:35am

I saw a fork assembly for 600eur for this moped. Not sure about the fork-crown distance and bearings, if they changed it during the lifetime.

I won't go legal with it, too much work for nuthin' and i think it's close to impossible with the swedish rules. I drive carefully instead :D
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larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 25 2019 4:02pm

First belt breakage.. Don't really know how long i've been using it, maybe 3000-5000km
Not long really. If i'm to guess then it depends on the coarse gravel on the roads in the winter. You can feel it in the entire bike when a piece of it gets jammed in the pulley
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fechter   100 GW

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Re: Rieju 50cc conversion

Post by fechter » Jun 26 2019 8:17am

Do you think the belt broke from a rock?
"One test is worth a thousand opinions"

larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Jun 26 2019 9:51am

I think i got a small damage in the side of the belt that eventually led to failure.

The CA-CHUNK! when a piece of gravel gets sucked in between belt and pulley is pretty convincing :D
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BionicBlitz   1 W

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Re: Rieju 50cc conversion

Post by BionicBlitz » Oct 04 2019 1:02pm

Hey any of you have the software for the apt96600??? cant get mine to work. if you have functional copy i could pay..
qs205 5t, 28s li-ion 36Ah, 120a esc, homemade frame.

Lamonz88   1 µW

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Re: Rieju 50cc conversion

Post by Lamonz88 » Nov 19 2019 6:28am


larsb   100 kW

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Re: Rieju 50cc conversion

Post by larsb » Nov 23 2019 3:52am

Ride on :D

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