It lives

See cars and bikes being built for the salt

Moderator: DLRA

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simpleterm
Posts: 15
Joined: Sun Sep 10, 2017 12:14 am

Re: It lives

Post by simpleterm » Wed Sep 13, 2017 2:31 am

RGV wrote:
Sun Sep 10, 2017 6:46 pm
If you are using Google Chrome there is an extension that you can enable that will make it possible to view the Photo Bucket pics. Works fine for me.

https://chrome.google.com/webstore/sear ... link?hl=en

Dave
Yep, I'm using Chrome. And holy Jesus, it worked! For so long I've been annoyed by PhotoBucket and now it works like a charm. Thank you so, so much!

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RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Wed Sep 13, 2017 8:58 am

It's not photo bucket it's chrome that has made a patch so you view p b pics.

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

User avatar
simpleterm
Posts: 15
Joined: Sun Sep 10, 2017 12:14 am

Re: It lives

Post by simpleterm » Fri Sep 15, 2017 1:22 am

RGV wrote:
Wed Sep 13, 2017 8:58 am
It's not photo bucket it's chrome that has made a patch so you view p b pics.
Yea, I know. I still don't know what PB was thinking when they just wanted $399 from people to see some photos... it's outrageous.

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RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Tue Sep 19, 2017 9:19 pm

Pistons and new main jets have arrived so I can start putting the motor back together. New carbs are shorter that the old Mikuni's so I need to modify the air box. This was supposed to be a nice easy change over. Yeh right.

Dave

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

User avatar
RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Mon Feb 05, 2018 4:25 pm

Engine back together and holding pressure.

Image

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

Stayt`ie
Posts: 958
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Re: It lives

Post by Stayt`ie » Mon Feb 05, 2018 6:59 pm

ok, I have had stuffall to do with twostrokes in the last cuppla decades,, whats the go with this 7psi :?
First Australian to ride a motorcycle over 200mph at Bonneville,,,

harky
Posts: 192
Joined: Fri Feb 09, 2007 9:03 am
Location: Adelaide

Re: It lives

Post by harky » Mon Feb 05, 2018 8:21 pm

Ronnie
2 smokes require a 7lb pre run stabalilisation , saturation period
so the co- efficient between the linea expansion of the rotating bits and the non smoke producing bits
can be pre stressed to help with the eardrum destroying noise outcome
Dave has it sussd to perfection
both in terms of noise and smoke
harky
DLRA #643
so far 120mph for$2000---imagine how fast I can go for $20,000

Stayt`ie
Posts: 958
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Re: It lives

Post by Stayt`ie » Mon Feb 05, 2018 10:07 pm

ArrrrSooo, :lol:
First Australian to ride a motorcycle over 200mph at Bonneville,,,

User avatar
RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Tue Feb 06, 2018 5:19 pm

Good to see ya have been paying attention Harky, ya closet smoker. :wink:

Ronnie, the amount of pressure isnt that important as long as its in the 5 - 10 ish PSI range. Testing the engine for any leaks. It should hold pressure for round 5 minutes. Air leaks = BAD. If you were to do it properly you would also test with a vacuum but I dont have a vacuum pump or gauge.

Dave

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

Stayt`ie
Posts: 958
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Re: It lives

Post by Stayt`ie » Tue Feb 06, 2018 10:05 pm

Interesting, thanks Dave, will catchup with you on the lake and talk more 8)
First Australian to ride a motorcycle over 200mph at Bonneville,,,

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AuotonomousRX
Posts: 684
Joined: Wed Jan 06, 2010 10:05 pm
Location: Eyre Peninsula SA

Re: It lives

Post by AuotonomousRX » Thu Feb 08, 2018 9:32 am

It's all about Crank Seals .....

Nice work Dave

Pete :)
Metric Target 250 on a 250 on a Red Bike

Pete :shock:
DLRA #866
SATA #49

Stayt`ie
Posts: 958
Joined: Fri May 13, 2005 11:47 pm
Location: Mackay

Re: It lives

Post by Stayt`ie » Thu Feb 08, 2018 10:24 am

yeah I was thinking that Pete, but also thought that youse may have been working towards a certin crankcase pressure before the transfer ports opened :)
First Australian to ride a motorcycle over 200mph at Bonneville,,,

User avatar
AuotonomousRX
Posts: 684
Joined: Wed Jan 06, 2010 10:05 pm
Location: Eyre Peninsula SA

Re: It lives

Post by AuotonomousRX » Thu Feb 08, 2018 12:38 pm

Hi Ron

The old RGV engines are pretty limited as far as what you can do to them ..... about 70 - 75 rwhp (Dyno dependent) is about it .... after all it's a mass produced Road Bike Engine and nothing like a Purpose Built Race Engine that you have in a TZ Yamaha or a RS Honda .....

Some interesting Information has been released since the Smokers were phased out of GP Racing ....

A couple of the Mechanics from the Works Aprilia 2 Stroke Team were able to share what they found based on many many years of R&D ...

and a lot of the last years of the 2 Stroke development they did found the opposite to the older thinking as far as modifications ...

They found, Big Volume and Liquid Cooling in the Crankcase(rather than small crankcase volume), rounded Transfer Port Dividers at the base of the cylinder (rather than thin knife edge), the shape of the Transfer Port Ducts (rather than the size of the port openings), not too much exhaust port timing, longer con rod lengths, all led to a reliable and rideable 54hp out of a 125cc GP Bike in the last years.

A lot of it is not really applicable to the RGV, but it helps to know what areas to change and what areas can be left alone ......

On ward and upward

Pete :)
Metric Target 250 on a 250 on a Red Bike

Pete :shock:
DLRA #866
SATA #49

User avatar
RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Sun Feb 18, 2018 9:56 pm

Got the bike fired up yesterday. A bit more to do mainly to the cooling system and it will be ready for another try. Ive fitted the old pipes that are a known good thing, after a good run with them on ill fit the new pipes that are worth another 6 hp on paper so we shall see what result that gives.

Dave

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

User avatar
RGV
Posts: 678
Joined: Sun Feb 06, 2011 9:17 pm
Location: Adelaide Hills

Re: It lives

Post by RGV » Fri Mar 09, 2018 7:03 am

Bike is packed in the van ready for an after work departure today. We will get a couple of hours down the road tonight and have a sleep then an easy drive in to the lake tomorrow.
Bike is running well on the bench so hoping for a successful speed week. Ill report back after we return in a week and a half.

Dave

Last Minute Racing
DLRA #928

2010 MPS/G 250 118 MPH
2011 Washed Out
2012 Washed Out
2013 MPS/G 250 131 MPH (RECORD)
2014 MPS/G 250 140 MPH (RECORD)
2015 MPS/F 250 DNF
2016 MPS/F 250 114 MPH (RECORD)
2017 MPS/F 250 DNF

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