BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
  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
oggy
oggy
Lancashire, England
Posts: 48
Joined: January 2014
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
218 registered members (Adam M.), 1,806 guests, and 551 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Brian Ellery, Jon Andrews, Berni Ernst, johnguppy, michael morgan
9955 Registered Users
Top Posters(30 Days)
btour 190
koan58 100
Stuart 84
NickL 66
Popular Topics(Views)
437,253 mail-order LSR
Forum Statistics
Forums33
Topics65,272
Posts632,156
Members9,955
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate This Thread
#518065 - 12/09/13 3:34 pm Beehive valve springs?  
Joined: Apr 2007
Posts: 518
Bigtwin Offline
BritBike Forum member
Bigtwin  Offline
BritBike Forum member

Joined: Apr 2007
Posts: 518
Southeast Usa
Hi!
Seeking advice/pro/cons on beehive valve spring set-ups. Please don't laugh,not a pipe-dream, but I am working on a long term 750 Enfield engine project and am down to considering the "best configuration" for the valve train. I've already built up the bottom end & cylinders incorporating thermal/frictionless coatings, etc. Interestingly enough, the engine at hand was previously "hot-rodded" with a set of unidentifiable high lift cams and titanium valve springs. I see that some folks are going to the "Beehive set-ups" similar to the Nascar developed configurations currently in vogue. To be sure the costs are high, as well as the gearhead factor, but what are the pros & cons? Any experience welcome! BTW, the bike is intended for spirited road riding and grudge racing with other Brit enthusiasts. I know, nobody uses REs in anger, but...

REgards!

Bigtwin

#518715 - 12/14/13 3:53 pm Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Oct 2001
Posts: 541
Ed V Offline
Sponsor Member
Ed V  Offline

Sponsor Member

Joined: Oct 2001
Posts: 541
Howard City, MI
Contact Ferrea racing they manufacture valves, springs, collars , keepers etc. www.ferrea.com
This would be a good place to start

#518727 - 12/14/13 5:18 pm Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Mar 2005
Posts: 9,965
John Healy Online content
John Healy  Online Content


Joined: Mar 2005
Posts: 9,965
Boston, Massachusetts
Both R&D and Kibblewhite have Beehive springs that should be applicable to your needs. The R&D springs give a bit softer seat pressure (approx. 85 pounds on a Triumph) while the Kibblewhite ones are closer to 120 pounds).


#518737 - 12/14/13 7:27 pm Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Oct 2001
Posts: 541
Ed V Offline
Sponsor Member
Ed V  Offline

Sponsor Member

Joined: Oct 2001
Posts: 541
Howard City, MI
That is good information John I knew Kibblewhite offered them but I don`t like the spring pressures they give. I will look into the R&D springs myself as I have a project I would like to use them on

#519145 - 12/17/13 3:47 pm Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Apr 2007
Posts: 518
Bigtwin Offline
BritBike Forum member
Bigtwin  Offline
BritBike Forum member

Joined: Apr 2007
Posts: 518
Southeast Usa
Hi & thanks for the shared Info! Both R&D and Ferrea look interesting... Will do some further sleuthing on Kibblewhite.

Thanks!

Bigtwin

#519233 - 12/18/13 12:38 am Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Aug 2001
Posts: 128
Dennis M Offline
BritBike Forum member
Dennis M  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 128
California, USA
One of the design reasons for the beehive spring is to reduce component weight at the top of the valve. This helps valve control without having to increase spring seat pressure.


Dennis M
#519268 - 12/18/13 9:54 am Re: Beehive valve springs? [Re: Bigtwin]  
Joined: Mar 2005
Posts: 9,965
John Healy Online content
John Healy  Online Content


Joined: Mar 2005
Posts: 9,965
Boston, Massachusetts
Dennis: That is a side benefit... The real benefit is from the beehives ability to keep the valve motion under control. The decreasing diameter greatly reduces harmonic spring vibration. Reducing, or eliminating harmonic vibrations, where the valve is totally under the control of the spring vibration, and not the camshaft, increases horsepower. Another side benefit is, unlike some racing springs which have a limited life, beehives have been proven suitable for long term street use.

I recently retested a set of R&D beehives that went through a season of dirt track racing. Before the change to the R&D beehive springs they were barely getting a couple two day weekends of racing before the power fell off dramatically. This meant he was changing springs almost once a month. All, but one of the springs tested with less than a couple percent loss in full lift pressure and the 4th was had a bit more loss. Not bad for a full season of very competitive racing.

Last edited by John Healy; 12/18/13 11:02 am.


Moderated by  Allan Gill 


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
UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.093s Queries: 15 (0.020s) Memory: 0.8276 MB (Peak: 0.9945 MB) Zlib disabled. Server Time: 2017-11-21 11:54:55 UTC