BV350 clutch inspection at 34,000 miles
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Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Wed Nov 14, 2018 4:00 am quote
After disassembly and measurement of parts the springs were the only part out of tolerance.
The manual shows(with a typo) the spring free length to be; 0.6023in. 15.3mm. The wear limit is 0.59in. 15.0mm. Here are the measurements.
0.582
0.584
0.584
0.589
0.582
0.587
The rollers showed no wear
That's about $70 with shipping.
The rollers are metal, unlike variator rollers and looked to last the life of the motor.
My troubleshooting skills were spot on with this. When the bike reverts back to strong wheel spin during idle, it's weak clutch springs.
BV350 The o'l rear wheel spinning on the center stand trick
My Malossi clutch kit shipped yesterday, so the clutch should be reinstalled this weekend.
Still waiting on OEM seals from EU, so it may be the following weekend B4 the bike is back to commuter duties
Addicted
2, aprillia scarabeo light. 500. 2007 2009
Joined: 29 Apr 2018
Posts: 585
Location: North central florida.
Wed Nov 14, 2018 4:20 am quote
Interesting, keep us informed. Thanks.
Molto Verboso
Xmax 300
Joined: 02 Jul 2016
Posts: 1228
Location: Adelaide
Wed Nov 14, 2018 1:54 pm quote
How's the centre stand ?
Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Thu Nov 15, 2018 3:26 am quote
Sledge wrote:
How's the centre stand ?
It's holding the bike up just fine

I won't get to the center stand until after I hurry up and wait for parts to get this job done
Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Fri Nov 16, 2018 5:10 am quote
I stand corrected. The semi trimmed plates on each end of the clutch were worn out. I didn't notice they were semi trimmed, then when I received the Malossi set it was obvious. I was measuring them as if they were untrimmed plates. Now that was a close to failure exposure
Addicted
2, aprillia scarabeo light. 500. 2007 2009
Joined: 29 Apr 2018
Posts: 585
Location: North central florida.
Fri Nov 16, 2018 5:12 am quote
Is that good or bad?
Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Fri Nov 16, 2018 6:04 am quote
zigzagguzzi wrote:
Is that good or bad?
Guess it depends how hard you ride it. Example: I wear out a tire every 9,000 miles. Waterboysh still had good tread when we changed his tire at 12,000 miles. Same thing with clutches. My clutch wore out at 34,000 miles. A failure could have left me stranded.
Addicted
2, aprillia scarabeo light. 500. 2007 2009
Joined: 29 Apr 2018
Posts: 585
Location: North central florida.
Fri Nov 16, 2018 9:05 am quote
Gotcha, thanks.
Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Tue Dec 11, 2018 8:58 am quote
I now have 200 miles on the malossi clutch. It rides the same as B4 the new clutch. The wheel spinning is gone but it spun after the first start. It got slower after each ride until now it doesn't.
Except for the special tools, it's fairly easy to do. I have a drawing of the tool that holds the clutch to remove the clutch shaft nut. I used two plates to clamp the clutch for disassembly. It can be done with a 8 1/2 inch square plate with a 1 1/4 inch hole in the center. 4 c-clamps can be used with the plate to release the retainer ring for disassembly.

clutch tool.pdf
 Description:
down with a 5/16 x 1 1/2 dowel pin offset from center.

Download
 Filename:  clutch tool.pdf
 Filesize:  7.17 KB

Hooked
Joined: 06 Oct 2013
Posts: 132

Tue Dec 11, 2018 12:04 pm quote
Thx for the update!
Ossessionato
2014 Commuter BV350(38,000)/2015 Scoot Life BV350(9,000)/2010 El Diablito SH150i(28,000)
Joined: 27 Dec 2013
Posts: 2070
Location: Orange Park Florida
Thu Dec 13, 2018 7:15 am quote
I must have been pretty close to clutch failure. I've noticed an increase in MPG since the replacment
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