ADVrider

Go Back   ADVrider > Bikes > Old's Cool > 2 smokers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-06-2012, 03:12 AM   #31
Twin-shocker
Beastly Adventurer
 
Joined: Jan 2012
Oddometer: 1,673
Does the crankcase volume not affect the primary compression ratio then? Not sure whether or not the transfer port velocity might be affected if the ratio was overly high?
Twin-shocker is offline   Reply With Quote
Old 03-06-2012, 11:07 AM   #32
stainlesscycle
Beastly Adventurer
 
stainlesscycle's Avatar
 
Joined: Jun 2008
Location: morgantown, wv
Oddometer: 2,222
Quote:
Originally Posted by Twin-shocker View Post
Does the crankcase volume not affect the primary compression ratio then? Not sure whether or not the transfer port velocity might be affected if the ratio was overly high?
not sure if you're referring to it's effect on modern motors or on buls?

on a modern motor with a powervalve, it's not so much an issue. the cranks are stuffed, so the crankcase volume changes become less an issue.. also the gg is shorter stroke...

on the buls, no power valve or reed, i'm sure the primary compression ratio has an effect on the port velocity...
__________________
current bikes
07 gasgas xc300-94 duc 900ss-86 morini camel (2)-84 IT200-83 IT175-78 guzzi lm1-77 pursang 250-76 morini 3 1/2 strada-76 frankentaco pursang 200-74 frankentaco pursang 200-74 morini 3 1/2 sport-74 mz ts250/0-74 puch 175 (3)-73 can-am 175tnt-71 guzzi frankeneldo-71 ossa Stiletto-70 frankentaco sherpa s(2)-66 morini corsarino(2)-63 morini corsaro + many more
stainlesscycle is offline   Reply With Quote
Old 03-06-2012, 12:47 PM   #33
PSchrauber
Studly Adventurer
 
PSchrauber's Avatar
 
Joined: Jan 2011
Location: Summer: Kemiö, Finland; Winter: North Germany
Oddometer: 832
The later Sherpa engine have drilled holes in the piston an "deep vertical grooves" for additional flush, so the crankcase volume is importand.



To determine where to drill, ... was wicked, (old piston left new one right), as the location of the grooves can
vary between the cylinders the holes where made by hand to the specific cylinder. (the shown used piston is the original one with around 1600km, the new one is NOS with first excess). By the way the piston pin is not centered as the ultra short stroke in combination with 85mm bore tends to nod/wobbel to avoid this the pin axis is moved some mm.

PSchrauber is offline   Reply With Quote
Old 03-06-2012, 01:52 PM   #34
blaine.hale OP
Beastly Adventurer
 
blaine.hale's Avatar
 
Joined: Feb 2009
Location: Atlanta, Ga
Oddometer: 3,041
I'm loving all of this information guys!
I'm going to check out a guys lot this week to pick up an alpina with a friend. I'm going to ask him about a metralla frame and late pursang motor (he has a few bultacos laying around.)
__________________
1974 BMW R90 /6
1968 Bultaco Matador MK3
1973 BMW R75 /5 Toaster LWB
1969 Bultaco Bandido MK2
2013 Husqvarna Terra TR650
blaine.hale is offline   Reply With Quote
Old 03-07-2012, 08:21 AM   #35
blaine.hale OP
Beastly Adventurer
 
blaine.hale's Avatar
 
Joined: Feb 2009
Location: Atlanta, Ga
Oddometer: 3,041
Someone texted me this pic and is asking $200 for it. Looks like an early model Pursang, I'm thinking MK4? I know that's not the engine I want and I'm not pursuing it, but thought I'd share the whole process.

__________________
1974 BMW R90 /6
1968 Bultaco Matador MK3
1973 BMW R75 /5 Toaster LWB
1969 Bultaco Bandido MK2
2013 Husqvarna Terra TR650

blaine.hale screwed with this post 03-07-2012 at 09:58 AM
blaine.hale is offline   Reply With Quote
Old 03-07-2012, 10:56 AM   #36
PSchrauber
Studly Adventurer
 
PSchrauber's Avatar
 
Joined: Jan 2011
Location: Summer: Kemiö, Finland; Winter: North Germany
Oddometer: 832
Quote:
Originally Posted by blaine.hale View Post
Someone texted me this pic and is asking $200 for it. Looks like an early model Pursang? I know that's not the engine I want and I'm not pursuing it, but thought I'd share the whole process.

...
As there is missing the carb leaving the intake open the bike will have enginewise some corrosion problems.

The bike will be in weight around 90 kg of metal = 10€/kg => 90€ => 110$ would be my offer, if I would live near by. In my opinion too many issues, the thickness of the frametubes will be lowered by corrosion too and certainly there will be micro corrsion between weldings and the tube too, so I would not use this frame for a running bike.
PSchrauber is offline   Reply With Quote
Old 03-07-2012, 01:44 PM   #37
stainlesscycle
Beastly Adventurer
 
stainlesscycle's Avatar
 
Joined: Jun 2008
Location: morgantown, wv
Oddometer: 2,222
i'd be all over that - wheels and front end is worth over 200... but as a project....it's some work. and it's not a big port motor.
__________________
current bikes
07 gasgas xc300-94 duc 900ss-86 morini camel (2)-84 IT200-83 IT175-78 guzzi lm1-77 pursang 250-76 morini 3 1/2 strada-76 frankentaco pursang 200-74 frankentaco pursang 200-74 morini 3 1/2 sport-74 mz ts250/0-74 puch 175 (3)-73 can-am 175tnt-71 guzzi frankeneldo-71 ossa Stiletto-70 frankentaco sherpa s(2)-66 morini corsarino(2)-63 morini corsaro + many more
stainlesscycle is offline   Reply With Quote
Old 03-07-2012, 02:06 PM   #38
blaine.hale OP
Beastly Adventurer
 
blaine.hale's Avatar
 
Joined: Feb 2009
Location: Atlanta, Ga
Oddometer: 3,041
Quote:
Originally Posted by stainlesscycle View Post
i'd be all over that - wheels and front end is worth over 200... but as a project....it's some work. and it's not a big port motor.
Maybe it would be good trading material to work towards what I need..
__________________
1974 BMW R90 /6
1968 Bultaco Matador MK3
1973 BMW R75 /5 Toaster LWB
1969 Bultaco Bandido MK2
2013 Husqvarna Terra TR650
blaine.hale is offline   Reply With Quote
Old 03-10-2012, 08:18 AM   #39
spo123
Man About Town
 
spo123's Avatar
 
Joined: Nov 2006
Location: North Shore Mass. USA
Oddometer: 719
Wicked seattle craigs list......I did NOT post this anywhere else!

seattle craigslist > tacoma > for sale / wanted > motorcycles/scooters - by owner please flag with care: [?]

miscategorized
prohibited
spam/overpost
best of craigslist


Avoid scams and fraud by dealing locally! Beware any deal involving Western Union, Moneygram, wire transfer, cashier check, money order, shipping, escrow, or any promise of transaction protection/certification/guarantee. More info
Bultaco dirt bike and extra frame - $500 (South Hill Puyallup)


Date: 2012-03-09, 7:39PM PST
Reply to: v4gpn-2894147133@sale.craigslist.org [Errors when replying to ads?]

Bultaco dirt bike. Needs to be restored. Bultaco road bike frame without engine. Asking $500 obo

  • Location: South Hill Puyallup
  • it's NOT ok to contact this poster with services or other commercial interests


PostingID: 2894147133
__________________
spo
1973 /5 LWB Toaster
spo123 is offline   Reply With Quote
Old 03-10-2012, 08:41 AM   #40
996DL
Buell me
 
Joined: Aug 2006
Location: finally back in paradise...
Oddometer: 2,146
Quote:
Originally Posted by spo123 View Post





PostingID: 2894147133
Poor seller probably isn't even out of bed yet, before his phone starts to ring off the hook !



996DL
996DL is offline   Reply With Quote
Old 03-10-2012, 10:11 AM   #41
PSchrauber
Studly Adventurer
 
PSchrauber's Avatar
 
Joined: Jan 2011
Location: Summer: Kemiö, Finland; Winter: North Germany
Oddometer: 832
From the ad's spo123 posted, this looks to be a good basis 800 € or 1,000 $ is OK if the bike is still running:

http://seattle.craigslist.org/oly/mcy/2889537549.html

1977 bultaco 250 pursang - $1000 (rainier)




Date: 2012-03-07, 9:47AM PST
Reply to: see below [Errors when replying to ads?]





its a runner needs to go to a new home so it will get rode call for any questions name is mike 253-310-2340 looking for kx 400 or any kx parts





  • Location: rainier
  • it's NOT ok to contact this poster with services or other commercial interests
PostingID: 2889537549
PSchrauber is offline   Reply With Quote
Old 03-10-2012, 02:27 PM   #42
darmst6829
Gnarly Adventurer
 
Joined: Jul 2006
Location: Redmond WA
Oddometer: 367
Quote:
Originally Posted by 996DL View Post
Poor seller probably isn't even out of bed yet, before his phone starts to ring off the hook !



996DL
The Metralla is the perfect bike for building the TSS replica. Any 5 speed bultaco motor should slide right in. The blue bike is a 4 speed Mercurio with a Sherpa S pipe installed.
darmst6829 is offline   Reply With Quote
Old 03-12-2012, 07:37 AM   #43
blaine.hale OP
Beastly Adventurer
 
blaine.hale's Avatar
 
Joined: Feb 2009
Location: Atlanta, Ga
Oddometer: 3,041
Quote:
Originally Posted by spo123 View Post
seattle craigslist > tacoma > for sale / wanted > motorcycles/scooters - by owner please flag with care: [?]

miscategorized
prohibited
spam/overpost
best of craigslist


Avoid scams and fraud by dealing locally! Beware any deal involving Western Union, Moneygram, wire transfer, cashier check, money order, shipping, escrow, or any promise of transaction protection/certification/guarantee. More info
Bultaco dirt bike and extra frame - $500 (South Hill Puyallup)


Date: 2012-03-09, 7:39PM PST
Reply to: v4gpn-2894147133@sale.craigslist.org [Errors when replying to ads?]

Bultaco dirt bike. Needs to be restored. Bultaco road bike frame without engine. Asking $500 obo

  • Location: South Hill Puyallup
  • it's NOT ok to contact this poster with services or other commercial interests


PostingID: 2894147133
Talk about the best case scenario ever for my project...damn you, west coast!
__________________
1974 BMW R90 /6
1968 Bultaco Matador MK3
1973 BMW R75 /5 Toaster LWB
1969 Bultaco Bandido MK2
2013 Husqvarna Terra TR650
blaine.hale is offline   Reply With Quote
Old 03-13-2012, 05:29 PM   #44
jcf
Gnarly Adventurer
 
Joined: May 2011
Location: The state of Me.
Oddometer: 249
Just in case someone scored that frame;

[/IMG ]
jcf is offline   Reply With Quote
Old 03-13-2012, 05:30 PM   #45
jcf
Gnarly Adventurer
 
Joined: May 2011
Location: The state of Me.
Oddometer: 249
jcf is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 06:48 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014