OP
Sat, 14 Jan 2023 04:17:15 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
Sat, 14 Jan 2023 04:17:15 +0000 quote
SaFiS wrote:
I've made a mistake, thought F was the circled in the pic. That's what goes between L & E (gap in 2nd pic)…
Ahhhh! Ok. Thanks!!
I managed to make it work without.
Will use next time.

What had me confused - no other parts fit in E - until I took Dremel and sand paper to it…

Thanks Saf.
Appreciate it.
OP
Fri, 20 Jan 2023 21:08:03 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Fri, 20 Jan 2023 21:08:03 +0000 quote
Little help?

Are use the MMW master cylinder on my scooter.

A little bit of research appears to show that the piston, and the accompanying rubber seals, or right out of the Piagio.

I think so anyway.
Historically, Scooter center has told me they don't carry the seals for rebuild. I now see that they have a rebuild kit that includes the piston, for about $70… Seems unreasonable for a piece of rubber.

I'm wondering if this cup shaped seal, is findable, on the inter-webs. Does anybody know what this type of seal is referred to? I welcome any search tags if you have ideas. Thanks.

-CM



Fri, 20 Jan 2023 21:18:54 +0000

Ossessionato
1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: Sun, 02 Aug 2015 18:39:51 +0000
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Location: Veria, Greece
 
Ossessionato
1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: Sun, 02 Aug 2015 18:39:51 +0000
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Location: Veria, Greece
Fri, 20 Jan 2023 21:21:18 +0000

Banned
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Banned
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Fri, 20 Jan 2023 21:21:18 +0000 quote
is that an 11mm?
OP
Fri, 20 Jan 2023 21:24:24 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Fri, 20 Jan 2023 21:24:24 +0000 quote
Thanks guys.

Safis - I missed that when I searched. Helpful.


OCT - Piston is 12MM. Would love to find the cup in the US...
Fri, 20 Jan 2023 21:29:37 +0000

Ossessionato
1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: Sun, 02 Aug 2015 18:39:51 +0000
Posts: 3804
Location: Veria, Greece
 
Ossessionato
1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2
Joined: Sun, 02 Aug 2015 18:39:51 +0000
Posts: 3804
Location: Veria, Greece
Fri, 20 Jan 2023 21:29:37 +0000 quote
Piaggio also sells it as an OEM part. Maybe you can get it in the US…

OEM code is: 494748

Here you go…
https://www.scootermercato.com/Scooter-Parts/Disc-Brake-Parts/49474800_2
OP
Fri, 20 Jan 2023 22:33:24 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Fri, 20 Jan 2023 22:33:24 +0000 quote
Jesus Safis.

Hahaha.

Awesome!!

Can you help me find the keys to my tool shed? They've been missing for about three years.
Sat, 21 Jan 2023 01:55:00 +0000

parallelogramerist
Joined: Mon, 26 Oct 2015 23:20:12 +0000
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parallelogramerist
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Sat, 21 Jan 2023 01:55:00 +0000 quote
How did your seal get damaged?
OP
Sat, 21 Jan 2023 06:50:12 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
Sat, 21 Jan 2023 06:50:12 +0000 quote
Good question.
Just basic use.
Second one - kit came with two - swapped first after a year.
Looks like the brake fluid is attacking it?

I have the most unpleasant challenge of bleeding the brakes tomorrow.
Done a full flush.
For the sake of RnD, bought a new caliper off aliexpress.
Tore it down into halves - and shot some pics.
Will post when complete.


More on the "double bleeder" set up when I have it all working/back together.

Sat, 21 Jan 2023 07:56:55 +0000

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: Fri, 21 Oct 2005 19:59:19 +0000
Posts: 13673
Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
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Location: The state of insanity, SoCal
Sat, 21 Jan 2023 07:56:55 +0000 quote
that piston looks wore the F out. I didn't think it was that old?

I'd check the bore to make sure you're not doing it all over again in short order.
Sat, 21 Jan 2023 08:35:09 +0000

Jet Eye Master
PX221 MHR, O tuned PX200, PX181 Quattrini and some motorbikes
Joined: Thu, 15 Jun 2017 05:16:54 +0000
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Jet Eye Master
PX221 MHR, O tuned PX200, PX181 Quattrini and some motorbikes
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Sat, 21 Jan 2023 08:35:09 +0000 quote
I have a master cylinder repair kit on my shelf. Been there for many years. Never had cause to use it.
Sat, 21 Jan 2023 13:02:21 +0000

Molto Verboso
PX 200
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Molto Verboso
PX 200
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Sat, 21 Jan 2023 13:02:21 +0000 quote
Nice orange caliper…

The back shaped to clear the hub?
Sat, 21 Jan 2023 14:48:08 +0000

Ossessionato
Joined: Fri, 14 Oct 2016 21:32:14 +0000
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Location: northern New York
 
Ossessionato
Joined: Fri, 14 Oct 2016 21:32:14 +0000
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Location: northern New York
Sat, 21 Jan 2023 14:48:08 +0000 quote
I think I bought that kit to repair the MC on my Stella. I tore the seal being too gorilla handed with it and just replaced the whole thing. $80 and done.
Sat, 21 Jan 2023 16:02:49 +0000

parallelogramerist
Joined: Mon, 26 Oct 2015 23:20:12 +0000
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parallelogramerist
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Sat, 21 Jan 2023 16:02:49 +0000 quote
This is a bit unnerving for me since i bought the same MMW brake master cylinder for my rusty VB1 project. There's a guy who is located in Greece that resleeves KTM hydro clutch master cylinders (Brembo and Magura) with a 10.5mm stainless steel sleeve. It ain't cheap at around 160 euros, but at least once rebuilt you would know it would last forever (just like the stock Grimeca MC). I wonder if he could sleeve other brands of MC's? Maybe option 1 would be to hard anodize the MMW MC while it's still brand new?
OP
Sat, 21 Jan 2023 16:17:53 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
 
Nedminder
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Sat, 21 Jan 2023 16:17:53 +0000 quote
Interesting.
Perhaps there is some kind of burr from one of the two holes machined from the reservoir.
I'll have a look see today.
Thanks!

Question - what does one home a brake master with? Or does one not hone?
Sat, 21 Jan 2023 16:22:33 +0000

Molto Verboso
PX 200
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Molto Verboso
PX 200
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Sat, 21 Jan 2023 16:22:33 +0000 quote
Usually hone with a small drill bit with 400-1500 grit strips taped and rolled around.

Spin the roll inside and let the flapping action do it's work.

Usually go in 200 grit steps in fineness.

Aiming for shiny/mirror finish.
Sat, 21 Jan 2023 16:25:05 +0000

bodgemaster
63 GL, 76 Super (x2), 74 Primavera (x2), 79 P200, 06 Fly 150
Joined: Thu, 26 Sep 2013 22:01:08 +0000
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Location: So Cal
 
bodgemaster
63 GL, 76 Super (x2), 74 Primavera (x2), 79 P200, 06 Fly 150
Joined: Thu, 26 Sep 2013 22:01:08 +0000
Posts: 6934
Location: So Cal
Sat, 21 Jan 2023 16:25:05 +0000 quote
Hit it with some emory paper wrapped around a socket
OP
Sat, 21 Jan 2023 16:28:25 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Sat, 21 Jan 2023 16:28:25 +0000 quote
Thanks gents.
OP
Sat, 21 Jan 2023 16:36:52 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Sat, 21 Jan 2023 16:36:52 +0000 quote
One follow up.
I would have thought that a cross hatch pattern was desirable - rather than shiny smooth?
Sat, 21 Jan 2023 18:41:10 +0000

Banned
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Banned
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Sat, 21 Jan 2023 18:41:10 +0000 quote
a ball hone will take care of any sharp edges if the bore is smooth. most the MMW parts look to be made with a CNC Chisel on the outside, but I'd hope that the bore is reasonably good.
Sat, 21 Jan 2023 20:20:47 +0000

Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: Fri, 21 Oct 2005 19:59:19 +0000
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Location: The state of insanity, SoCal
 
Sergeant at Arms
Weird 80's Vespas & Cool Vintage Lambrettas
Joined: Fri, 21 Oct 2005 19:59:19 +0000
Posts: 13673
Location: The state of insanity, SoCal
Sat, 21 Jan 2023 20:20:47 +0000 quote
^^^

what mr. Owens said-- hit it with a ball hone. you can pick one up off flea bay for about $10

I have an ooollllddddd snap on three stone brake cylinder hone but the smallest it goes is about 1/2"
OP
Mon, 23 Jan 2023 03:50:14 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
Posts: 3835
Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
Mon, 23 Jan 2023 03:50:14 +0000 quote
Patric/Greasy - saw these.
Just tied up with other shop stuff - so didn't get a chance to work on scoot yet.

I'm going to order a repair kit from Mercato if they have 'em - and grab a small hone - cause I'll have the time and its only about $15.

Thanks for the other comments as well - I thought it was normal that these things got stiff and nasty after 6 months...
Who knew.

Want to get this back to super smooth.
Might play with a handle design that is progressive as well - where it pushes on the piston - we'll see...
OP
Mon, 23 Jan 2023 06:28:38 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
Mon, 23 Jan 2023 06:28:38 +0000 quote
End of the weekend.
Scrolling through YouTube - as one does.
Line of "shorts" shows up - and I'm like: wait. thats me!

https://youtube.com/shorts/zTfHcCmRRZ0?feature=share

¯\_(ツ)_/¯

hahaha.
Hope y'all all have a good week.
Good motivation to get back at the scoot and get rolling again.
Mon, 23 Jan 2023 12:19:58 +0000

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
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Mon, 23 Jan 2023 12:19:58 +0000 quote
What can you say? Folks dig The Unicorn.
Mon, 23 Jan 2023 12:30:52 +0000

Molto Verboso
PX 200
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Molto Verboso
PX 200
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Mon, 23 Jan 2023 12:30:52 +0000 quote
Mini Vespa celeb…
Mon, 23 Jan 2023 13:45:26 +0000

Not So Moderator
VNB VSC 09C VMA VSX - vbc vmb
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Not So Moderator
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Mon, 23 Jan 2023 13:45:26 +0000 quote
rock star
Mon, 23 Jan 2023 13:48:58 +0000

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
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Mon, 23 Jan 2023 13:48:58 +0000 quote
It's better (like everything else) when it's not displayed as a "short."

Mon, 23 Jan 2023 15:14:47 +0000

Veni, Vidi, Posti
Joined: Sat, 22 Oct 2011 16:23:21 +0000
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Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: Sat, 22 Oct 2011 16:23:21 +0000
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Mon, 23 Jan 2023 15:14:47 +0000 quote
That is one cool ride.
OP
Thu, 26 Jan 2023 04:51:34 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
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Location: california
Thu, 26 Jan 2023 04:51:34 +0000 quote
Thanks!!

It's hard to say if I like tuning/restoring [sic] more.

After some great input from the crowd, I:
- realized my swing arm was worn
- realized my master cylinder had a burr
- realized I needed to get my scoot back on the road!!

Bought a master cylinder off Aliexpress for $25 or something. Maybe $14. IDR.
For those that don't know - the German companies are basically buying the same and rebranding.

Was curious.
Turns out - The quality is superb.

My chewed up master cylinder seals are still sealing.
Will replace with new and hone in future.
Temporarily hit with light sand paper and existing piston seals.
Smooth - for time being.
Thanks for heads up on Abby Normal west.

Got out and rode today.
72 and sunny.
Cali may be whack- as the kids say - but t shirt and jeans felt pretty damn good tday.

Appreciate all the help.
Few pics below documenting the situation.
- CM


Bit of modification required.


Seriously - the machining is excellent, and there was zero swarf. Why shouldn't I like RPM more then BGM at .15 the price?


Installed extra bleeder screw at low point and hung the caliper to fill (with syringe).


All assembled with new caliper in… orange. ¯\_(ツ)_/¯


Good for the sole


72 and sunny.
No crullers, but plenty of coffee and sun.

Thu, 26 Jan 2023 04:57:37 +0000

Ossessionato
79 P200E (Ruby), 62 Allstate (B-62)
Joined: Wed, 11 Jan 2006 15:25:08 +0000
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Location: Florence, OR
 
Ossessionato
79 P200E (Ruby), 62 Allstate (B-62)
Joined: Wed, 11 Jan 2006 15:25:08 +0000
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Location: Florence, OR
Thu, 26 Jan 2023 04:57:37 +0000 quote
Oh man, the Orange Unicorn is badass, and clean! Very nice!
Thu, 26 Jan 2023 13:54:44 +0000

Not So Moderator
VNB VSC 09C VMA VSX - vbc vmb
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Not So Moderator
VNB VSC 09C VMA VSX - vbc vmb
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Thu, 26 Jan 2023 13:54:44 +0000 quote
Man that thing is a statement.

Love it.
Thu, 26 Jan 2023 19:51:26 +0000

Veni, Vidi, Posti
Joined: Sat, 22 Oct 2011 16:23:21 +0000
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Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: Sat, 22 Oct 2011 16:23:21 +0000
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Thu, 26 Jan 2023 19:51:26 +0000 quote
Cool machine and love the wood side stand.
Thu, 26 Jan 2023 20:58:35 +0000

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
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Location: Nashville
 
Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
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Location: Nashville
Thu, 26 Jan 2023 20:58:35 +0000 quote
Tierney wrote:
Cool machine and love the wood side stand.
You can do that sort of thing when you have a sidecar to store the block in.
Fri, 27 Jan 2023 00:42:56 +0000

Ossessionato
2007 Stella 225
Joined: Sat, 02 Nov 2019 20:44:07 +0000
Posts: 3504
Location: Rochester, Minnesota
 
Ossessionato
2007 Stella 225
Joined: Sat, 02 Nov 2019 20:44:07 +0000
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Location: Rochester, Minnesota
Fri, 27 Jan 2023 00:42:56 +0000 quote
Tierney wrote:
Cool machine and love the wood side stand.
He's showing off his wood.
Fri, 27 Jan 2023 00:47:28 +0000

Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
Posts: 8377
Location: Nashville
 
Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate, 08 Stella (for now)
Joined: Thu, 16 Jun 2011 14:59:35 +0000
Posts: 8377
Location: Nashville
Fri, 27 Jan 2023 00:47:28 +0000 quote
Christopher_55934 wrote:
He's showing off his wood.
If you had an 8" 4x4, you'd show it off, too.
OP
Fri, 27 Jan 2023 05:59:29 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
Posts: 3835
Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
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Location: california
Fri, 27 Jan 2023 05:59:29 +0000 quote
Hahaha.

That block has been with me since I prototyped the leaning mechanism.
(I actually HAVE a side stand - but it just never ends up at the top of the project list).

It's versitile!
I can lean it in or out.
Turn it on its side or stand it tall - to change the angle.
You gotta see the beauty of it in action to fully appreciate.

Maybe I will whip up a fold down stand this year.
Tho it might be that block on a hinge.
🙂
Fri, 27 Jan 2023 13:51:49 +0000

Not So Moderator
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Not So Moderator
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Fri, 27 Jan 2023 13:51:49 +0000 quote
charlieman22 wrote:
Maybe I will whip up a fold down stand this year.
Tho it might be that block on a hinge.
🙂
Woof!
Sun, 29 Jan 2023 17:25:00 +0000

Ossessionato
Joined: Fri, 14 Oct 2016 21:32:14 +0000
Posts: 2305
Location: northern New York
 
Ossessionato
Joined: Fri, 14 Oct 2016 21:32:14 +0000
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Location: northern New York
Sun, 29 Jan 2023 17:25:00 +0000 quote
I came across this and I thought of you. I still have this fantasy about making a precise cut on a rotary pad using common tools. I also have a set of old T4 VW heads that the local machinist said he could not flycut. This looks promising, though slow. There are lots of fools on YouTube putting fly cutters on Harbor Freight drill presses. Looks like a great way to ruin your part and take out an eye.



Tue, 31 Jan 2023 04:39:23 +0000

parallelogramerist
Joined: Mon, 26 Oct 2015 23:20:12 +0000
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parallelogramerist
Joined: Mon, 26 Oct 2015 23:20:12 +0000
Posts: 4643

Tue, 31 Jan 2023 04:39:23 +0000 quote
So how are you liking the LED that you have installed?
⬆️    About 28w elapsed between posts    ⬇️
OP
Mon, 14 Aug 2023 03:05:46 +0000

Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
Posts: 3835
Location: california
 
Nedminder
62 VBB1T Round Tail W/ leaner sidecar
Joined: Sat, 26 Jan 2019 09:50:15 +0000
Posts: 3835
Location: california
Mon, 14 Aug 2023 03:05:46 +0000 quote
Been working on converting my mill over to CNC.
I wasn't really sure why - until I cut my first part.
More on that soon, over on my shop thread.

I'm well outside LA now - much more rugged California coast and less gridded valley with stop lights.
The run to my shop on the scoot is a killer stress test for the motor, with the penultimate portion being a 65MPH, WOT, up hill run, for 4.3 miles, no letting off.

The motor now has about 4K miles (best guess) - and its running great.
The hill is such a stressor, I've used it to experiment a bit with the Smart Carb's rods (jetting).
But in my never ending commitment to providing entertainment - thought I would test something near and dear to my heart: temperature senders.

Now, I know what you're thinking - and it's true - you will never get these few minutes of your life back - but stick with me here for a sec - 'cause I have something you might find interesting.

First - some background:
The BGM was the first head I used that had a place to screw in a temp sensor.
When I ran it originally - I kept my under plug unit - 'cause that's what I had.
But at some point - feelin' fancy - I plonked down $20 of my hard earned money and installed the in-head version.
I was kinda shocked.
Damn thing started "over-heating" right away.
I knew I should have just left well enough alone!

But then it dawned on me - that perhaps reading in head was different.
So I did some quick testing - where I would have both an under plug and in head sender on the scoot - and would unplug one and plug in the other on the run.
This was no easy feat - as those plugs are designed to confound humans.
My results as best I could tell showed about a 50 degree difference.
Regular readers of this thread may recall - I postulated that the difference would grow as the temp went up.

Which brings us to today, the 4.3mile uphill run, and the purpose of this post.
For fun (ik, ik), I put the old under plug sensor in today, and did runs up the 4.3 miles first using the in-head feed, then swapping to the under plug feed.

Settings:
65MPH.
4th gear.
3/4-7/8 throttle.
Tool bag and 1 gallon of extra petrol in the sidecar for weight.
Sitting up straight (no tuck)
Leather coat
Air in the tires (though I have no idea how much).

Using the in head sender - temps climbed to a "whopping" 393° by the top of the hill.
When I reached the top, I unplugged the in-head and swapped to the under-plug - ran down the hill - U turned - and did it again.

This time - I noticed the temps were kinda slow to register.
But sure enough - they started to climb.
When I reached the top after ~4 minutes of just sitting on the throttle under load - temps hit... wait for it... 283°.
Not a typo.

Now some of you may be spitting and cussing at this point - and postulating all kinds of uncharitable thoughts about my honesty - but those are the numbers.
>100° difference.

Prologue:
There may be more to the story.
I made this run with the scooter's side cover (cowl) off the scoot.
And I suspect that the under plug is far more affected by external conditions than in head.
- does it touch a fin?
- is it in the path of the fan blown air?
- Etc.

Tomorrow - I'll make the exact same run again - with the cowl on the scoot.
Let's see if its a little warmer.
In the mean time - consider what a difference the readings for VMC/BMG/MMW heads that utilize screw in type senders vs under plug.

For me, it was more than 100°


The run. 4+ minutes at near WOT under load


The scoot - exposed to outside for both runs


The set up: both senders in place. Just plug/unplug between runs.


I only saw this after the event - about a month ago. No seize - no unhappiness.
Suspect I was just ranking on the throttle into the wind. (note: 433°...)
I need a Seventies with Sidecar sticker.

  DoubleGood Design  

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