Landracing Forum Home
November 20, 2017, 07:29:23 PM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News:
BACK TO LANDRACING.COM HOMEPAGE
 
   Home   Help Search Calendar Login Register  


(Note: Donations are not tax deductible)







Live Audio Streaming and Archives of Past Events
Next Live Event: TBD
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [15]   Go Down
  Print  
Author Topic: 750cc pushrod bike build  (Read 33862 times)
0 Members and 1 Guest are viewing this topic.
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #210 on: July 22, 2010, 04:29:53 PM »

New turbo installation uses 3 inch exhaust pipe with V-band clamp on the end. Elbow can now be rotated if needed or a different end can be installed when front fairing is installed.


http://www.frsengineering.com/pp166.JPG

O2 sensor will be installed in open bung when support brackets are fabricated and pipe is thermal wrapped.


http://www.frsengineering.com/pp165.JPG
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #211 on: July 22, 2010, 04:47:32 PM »

New BOV is adjustable and boost pressure controlled.


http://www.frsengineering.com/pp167.JPG
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
willieworld
Hero Member
*****
Offline Offline

Age: 72
Location: 921 chicago ave modesto ca. 95351
Posts: 1818





Ignore
« Reply #212 on: July 22, 2010, 05:46:15 PM »

7.B.20.     2010 SCTA rulebook        all exhaust system outlets shall be directed away from rider, the rear tire and the course surface.                                                                  willie buchta
Logged

willie-dpombatmir-buchta
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #213 on: July 29, 2010, 05:49:30 PM »

New turbo installation is complete with new support brackets installed. Bike was tested on the country road in front of the house and this one appears to work much better than the first setup. A large bug was appropriately sacrificed on the front of the turbo at high speed to insure a safe test!


http://www.frsengineering.com/pp168.JPG


http://www.frsengineering.com/pp169.JPG
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #214 on: September 04, 2010, 08:04:50 PM »

New dyno has been installed. I can finally get the EFI mapped properly for this bike. Should be ready for Maxton by the end of the month.


http://www.frsengineering.com/pp172.JPG


http://www.frsengineering.com/pp171.JPG


http://www.frsengineering.com/pp170.JPG
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
isiahstites
Hero Member
*****
Offline Offline

Location: Northern Nevada
Posts: 1149





Ignore
« Reply #215 on: September 04, 2010, 08:06:39 PM »

Nice job Randy!
Logged
55chevr
Hero Member
*****
Offline Offline

Location: Long Island, NY
Posts: 2221





Ignore
« Reply #216 on: September 04, 2010, 08:07:43 PM »

That was one fast install ... I like it ... Joe
Logged
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #217 on: September 04, 2010, 08:13:40 PM »

Thanks guys, I made one pass on it just to see if everything worked mechanically. I still have to load the software on my laptop and calibrate it.
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
Rchop
Sr. Member
****
Offline Offline

Age: 63
Location: Murphysboro, Illinois
Posts: 605



WWW

Ignore
« Reply #218 on: September 28, 2010, 09:11:08 AM »

Success in Maxton! 4 passes made Saturday and the old record was bumped 20mph to 129 + mph. I kept increasing fuel pressure and went faster. I was planning on increasing boost Sunday morning and working into the 130's but I sold the bike Saturday afternoon and it was on its way to NY!  Joe Daly's nephew bought the bike to learn to Land Speed race. It's a great platform to slowly increase in size and go faster as you learn.

The new dyno made it a whole lot easier. I did learn something about dyno tuning though; with the type of dyno I have you can't simulate the load experienced on the track for more than a few seconds. My first pass logged at over 14 to 1 AFR when I had tuned to the low 12s on the dyno. I slowly made adjustments with fuel pressure increases since the injector timing was maxed in the WOT high rpm range. This brought the AFR down to where I wanted it and incresed my power and speed. The perfect scenario would be to put the bike back on the dyno now, and log the difference from the track to the dyno runs. This would give me a differencial to tune to on this bike for future track runs. Thanks to Todd Dross for that information. I can't do it with the turbo 750 since it's been sold, but I will tune the new one richer in anticipation of the track differencial.

So...it is on to the next, faster bike build!
Logged

Each unexpected discovery is first ridiculed, then objected to and finally considered self evident
www.frsengineering.com
#4836 A-PBF 750cc(complete)
#765 A/G 650cc
saltwheels262
Hero Member
*****
Offline Offline

Age: 63
Location: cumberland plateau
Posts: 1059


LTA 7/2013




Ignore
« Reply #219 on: September 28, 2010, 11:16:42 AM »

you sure don't have any problem selling lsr bikes.
good for you .

i've got 2 for sale---
  120c.i. kneedragger v twin

  222 hp zx12r

franey
Logged

bub '07 - 140.293 a/pg   120" crate street mill  
bub '10 - 158.100  sweetooth gear
lta  7/11 -163.389  7/17/11; 3 run avg.-162.450
ohio -    - 185.076 w/#684      
lta 8/14  - 169.xxx. w/sw2           
'16 -- 0 runs ; 0 events -- made a 2 state change in ZIP codes

" it's not as easy as it looks. "
                            - franey  8/2007
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [15]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!


Google visited last this page September 09, 2017, 08:18:57 AM