BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
JWood Auction JRC Engineering dealers JWood Auction
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Photo posting tutorial

Member Spotlight
Thomas4
Thomas4
Thun, Berne, Switzerland
Posts: 44
Joined: August 2008
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
191 registered members (68 royalstar tony), 1,676 guests, and 518 spiders.
Key: Admin, Global Mod, Mod
Newest Members
analyse, Drifter, john harrison, David Stothard, iansouthoz
10039 Registered Users
Top Posters(30 Days)
Lannis 149
kommando 113
Stuart 61
Popular Topics(Views)
478,877 mail-order LSR
Forum Statistics
Forums33
Topics65,746
Posts635,570
Members10,039
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
Re: joined the Goldie cult! [Re: L.A.kevin] #720523
12/30/17 9:13 pm
12/30/17 9:13 pm
Joined: Feb 2012
Posts: 169
Los Angeles, CA
L
L.A.kevin Online content OP
BritBike Forum member
L.A.kevin  Online Content OP
BritBike Forum member
L
Joined: Feb 2012
Posts: 169
Los Angeles, CA
What the heck are these pushrods?

I was noticing when checking valve clearance that the pushrods look a little weird. Do these look strange? These have a constant diameter at the lower end, whereas most pushrods I've seen have a reduced diameter at the follower end.

[Linked Image]

BSA Gold Star eBay items

BSA Gold Star forum This board is dedicated to BSA Gold Star motorcycles.

Re: joined the Goldie cult! [Re: L.A.kevin] #720587
12/31/17 10:30 am
12/31/17 10:30 am
Joined: Dec 2011
Posts: 281
Norfolk England
D
DBDBrian Online content
BritBike Forum member
DBDBrian  Online Content
BritBike Forum member
D
Joined: Dec 2011
Posts: 281
Norfolk England
Welcome to the Goldstar fraternity Kevin. Your pushrods would seem to be aftermarket solid duraluminium,(to prevent flexing). possible Eddie Dow.
I run a set in my Goldie, but I have fitted short steel bottoms to prevent them pocketing into the follower, which inhibits valve adjustment.


Brian

Made In England
Re: joined the Goldie cult! [Re: L.A.kevin] #720652
12/31/17 9:18 pm
12/31/17 9:18 pm
Joined: Feb 2011
Posts: 3,391
Orygone
Boomer Offline

BritBike Forum member
Boomer  Offline

BritBike Forum member
Joined: Feb 2011
Posts: 3,391
Orygone
Webco also made aftermarket alloy pushrods. Some debate about whether lightening the valve train is beneficial or not.


Bill B...


Boomer
Re: joined the Goldie cult! [Re: Boomer] #720670
01/01/18 12:09 am
01/01/18 12:09 am
Joined: Feb 2012
Posts: 169
Los Angeles, CA
L
L.A.kevin Online content OP
BritBike Forum member
L.A.kevin  Online Content OP
BritBike Forum member
L
Joined: Feb 2012
Posts: 169
Los Angeles, CA
Thanks Bill and Brian. Will have another debate with myself as to whether I'll go with stock or ABASAF pushrods. Or???

I had a long ride today of about a 100 miles. Went up the Angeles Crest and ran 'er in well. I had the back brake adjusted too tight and cooked it a bit, but still seems to have some bite. The rear tail light lens went walkabout, and both speedo and tach decided to go nuts. Spun right around about the same time. Whoever rebuilt them last must have used some sort of locking device or threadlocker chemical that failed exactly the same time.

Bike ran well. I had a 240 main jet that i replaced the 320 jet with. Will order some new jets soon and try to get a 220 in there and see how it runs. Will try Magneto Man's carb settings because I believe our bikes are very similar- well at least mechanically.

Kevin

Re: joined the Goldie cult! [Re: L.A.kevin] #720678
01/01/18 12:50 am
01/01/18 12:50 am
Joined: Aug 2001
Posts: 4,988
Stone Creek OH USA
R
Rich B Online happy

BritBike Forum member
Rich B  Online Happy

BritBike Forum member
R
Joined: Aug 2001
Posts: 4,988
Stone Creek OH USA
Congrats on the ride. clap

A GS is a sweet ride, especially when you get them dialed. Surprisingly competent for a 1950’s motorcycle.....

grin


Life is too short to drink cheap, bad beer.
Re: joined the Goldie cult! [Re: Boomer] #720681
01/01/18 12:58 am
01/01/18 12:58 am
Joined: Aug 2015
Posts: 1,010
Bolton Lancs UK
A
Andy Higham Online content
BritBike Forum member
Andy Higham  Online Content
BritBike Forum member
A
Joined: Aug 2015
Posts: 1,010
Bolton Lancs UK
Originally Posted by Boomer
Webco also made aftermarket alloy pushrods. Some debate about whether lightening the valve train is beneficial or not.


Bill B...

Any reduction in reciprocating weight is beneficial as it reduces the load on the components


1955 BSA B31 400cc "Stargazer"
1962 Greeves 200cc "Blue Meanie"
1962/67 Greeves 350cc
1967 Greeves 360cc Challenger
1984 Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500cc sprint/LSR bike "Deofol"
Jawa 500cc grasstrack
2003 Aprilia RSV Mille "Lo Stregone"
Re: joined the Goldie cult! [Re: Andy Higham] #720685
01/01/18 1:51 am
01/01/18 1:51 am
Joined: Feb 2011
Posts: 3,391
Orygone
Boomer Offline

BritBike Forum member
Boomer  Offline

BritBike Forum member
Joined: Feb 2011
Posts: 3,391
Orygone
Originally Posted by Andy Higham
Originally Posted by Boomer
Webco also made aftermarket alloy pushrods. Some debate about whether lightening the valve train is beneficial or not.


Bill B...

Any reduction in reciprocating weight is beneficial as it reduces the load on the components





I was referring to performance purposes.


Bill B...


Boomer
Re: joined the Goldie cult! [Re: L.A.kevin] #720803
01/01/18 9:39 pm
01/01/18 9:39 pm
Joined: Aug 2001
Posts: 1,864
Elko, Nevada USA
dave - NV Online content
BritBike Forum member
dave - NV  Online Content
BritBike Forum member
Joined: Aug 2001
Posts: 1,864
Elko, Nevada USA
Reference to pushrods mentioned here. I've commented on this before ... It's commonly acknowledged by many mc and auto performance tuners that pushrod harmonic flex causes unreliable cam timing as the flex will cause the valve to 'bounce' on the seat. This has been shown with high speed sychro cameras.

Anyhow .. I've fitted ABSAF double ball ended tubular chrome moly pushrods and their ball socket cam followers in two GS engines, one a racer and the other my 'special' road bike. It's 'a bit of a fiddle' arriving at the correct length but certainly not beyond our home shop talents. The ball ends are pressed into the tubes. I had some alu tubing in my 'stuff' with the correct ID that I used as test models before cutting the steel tubing. It's difficult to remove the ball ends that are a press fit into the steel tubing if you need to redo the length. So my son the ME designed and made a neat puller tool for myself and GStarRon (RIP).

I do have some question using steel vs alu for GS pushrods. As the steel rods will have little growth due to engine heat as would alu rods growing in length compensating with the cylinder muff growth. hmmm. I've been setting the cold valve clearances at 'just able to spin' vs the OEM specified 6 thou. This is a strong argument to modify the GS rocker box with removable caps to do a 'look see' of valve clearances in a hot engine. And then be able to adjust clearance as needed.


dave - NV
Page 2 of 2 1 2

Moderated by  Rich B 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.6.1.1