Bergfelt Racing Enterprises, LLC
4412 W. 6th Avenue West Mayfield Boro Beaver Falls, PA 15010-1915 U.S.A. (724) 847-3677 Fax (724) 847-1566 info@bergfeltracing.com |
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A durable Bull Bar is what you need to accessorize your truck! |
Bergfelt Racing
Enterprises is
pleased to offer our Custom Bumpers for
kart racers. We have been supplying bumpers since
2001. Most of the bumpers pictured on this page are the
loop style that are meant to minimize the chance of other karts
climbing
over in the event of contact with the rear tires. We can
also fabricate more conventional bumpers.
Are Bergfelt's Bumpers legal for my racing association? We are often asked if our bumpers are legal for WKA and Rotax Max as well as other associations. Bergfelt's Bumpers pre-date those rules. When WKA first introduced full coverage bumpers for sprint karts in the junior enduro classes, our phone really started to ring. During the first season that Rotax Max implemented a full coverage bumper for their junior classes, ours were the bumpers that they recommended and the rule that they developed after that describes our standard bumper to a "t". Later on, the enduro kart racing club that races at Summit Point closely studied our bumpers when they were developing their full coverage bumper rule as well. It is our understanding that the final version of the WKA rule developed from what that club learned from our bumpers. Clubs all over the USA recommend our bumpers. We have made many, many for WKA, IKF, Rotax Max, Unlimited All-Stars, and other clubs and associations for sprint, enduro and speedway kart racing. |
Bergfelt's Bumpers are made
from quality 3/4" od, .065" wall mild steel tubing and are MIG welded. We use mild
steel because the bumper should bend in a hard collision.
As the bumper bends, it absorbs the shock protecting the driver and the
chassis. The bumpers are supplied unfinished, ie. they are not
chrome plated or painted. We leave that up to the customer.
This is our original prototype bumper
that was made for a CRG Heron Oval chassis. It was finished with Rustoleum spray paint.
Standard Style Bumpers
The karts above were spotted at the 2005 R-Max Nationals. These
karts were competing in the JR Max division that requires an extended
bumper. Our bumpers fit the bill perfectly. They fit the
karts perfectly too! Both of these karts are fitted with what we call the original "symmetrical" style
because the loops stick out evenly on both sides.
Off-Set Bumpers for Oval Karts
This is an offset bumper for Mongoose dirt
oval chassis. We call this an original style
asymmetrical
bumper because the loops stick out more on one side than the other. It has the standard ends.
Jamaican Center Style Bumpers
In November of 2005 we had a request to make a bumper for a kart racer
in Jamaica. That racer requested a bumper that was just a little
different but very strong in the center. Our new Jamaican center style
bumper is the result. This is our most sturdy style bumper. It is an especially good choice if you want to tighten the kart up especially if using the rubber insert mounting method. To keep the chassis free we recommend the use of no-bind pins with this bumper style.
West Coast Ends Style Bumpers
The West Coast Optional ends are available with either standard or Jamaican style middle sections.
Add $15 to the total bumper price for the West Coast style ends.
Please note; We do not provide chrome plating service. The customer arranged for the plating on his own.
Margay / Trackmagic Style Bumpers
Margay and Trackmagic Karts have a unique mounting method. This picture illustrates the bumper that we make for those applications. Add $15 to the calculated price for this style.
Unimited All-Stars Wedge Body Style Bumpers
New for 2010 is the UAS Wedge body style bumper. The bumper pictured features the West Coast double bend ends but it is also available with the standard single bend ends. This bumper was designed to tie onto the sideboards of the wedge bodies of Unlimited All-Stars karts. Go to http://www.unlimitedallstars.org to learn more about this exciting division of karting. This bumper is designed to maximize the downforce created by the wedge body. It must be installed using our exclusive no-bind pins with extension bushings.
This picture shows in detail the no-bind pin, extension bushing and frame tube adaptor bushing used on the UAS Wedge Body bumper. All that needs to be done is to insert the pin and bushing assembly into the end of the frame rails, cross drill with a 1/4" drill and install a high grade bolt with a lock nut. This mounting method is more secure than the standard rubber inserts and allows more chassis flexibility than any other other mounting method that we know of.
When ordering this bumper we need to know the distance from the center of the left frame rail to the inside of the side board, the distance from the center of the right frame tube to the inside of the right side board, the center to center distance of the frame rails and the inside diameter of the frame rail tubes. The entire kit with the West Coast Ends is $90 and with the standard ends (not-pictured) $80.
Bumper Mounting
There are two
basic methods of mounting rear kart bumpers;
1. A special rubber bushing is inserted into the frame rails and
a bolt is inserted through an eye on the bumper into the threads in the
special bushing. The bumper pictured below was made for that type
of application. This is the most common method used for sprint
karts but is also employed by some oval chassis. We highly
recommend that the mounting bolt is safety wired to the kart chassis.
2. The second method requires that there are tubes attached to
the bumper that insert into the ends of the frame rails. The
frame
rail and the bumper insert are cross drilled and a bolt is inserted
through them to secure the bumper. This method is often used in
an attempt to
keep the bumper from "binding up" the chassis or preventing it from
flexing freely, but since the bolt is tight, and prevents twist, some
binding of the chassis still exists. The bumpers that we make for
this type of
application utilize our unique no-bind technique pictured below.We recommend putting some grease on the pin where it fits through the bumper eye to insure that rust and corrosion will not form in the joint limiting flexibility.
Bumpers start out at only $57.00 each
for the basic bumper. This is for bumpers up to 36" over all
length. Add .75 per inch for each inch over 36".
If the bumper is for an application
that requires the no bind pins add $10.00. We can also machine
no-bind bushings for sprint karts that utilize the rubber bushing
mounting method. We also supply a complete line of bumper
mounting hardware. Contact us for pricing.
Since these are custom made bumpers, of course additional loops and
mounting tabs and bumper configurations can be added at an additional
cost. We can also fabricate front bumpers and nerf bars.
Call or e-mail for pricing .
We have found Rustoleum spray paint to hold up very well as an
attractive finish for these bumpers.
Bumper Hardware
Rubber mounting plugs with threaded metal insert
Specify if for; 23mm / 7/8" , 25mm / 1", or 27mm / 1 1/8" inside diameter frame tubes.
Adaptor Plug / Frame to Bumper/Machined Aluminum
Specify if for: 28mm / 1 1/8", 30mm / 1 3/16", 32mm / 1 1/4" outside diameter frame tubes.
End Plugs/Machined Aluminum
Bumper Bolts M10
Our B.R.E. Exclusive No-bind Bushing
These are inserted between the adaptor plug and end plug so that the bumper bolt can be tightened but the bumper is still allowed to float.
The bushing can be easily removed if it is desirable to have the bumper tighter to fine-tune handling.
Call for current pricing of bumper hardware. Since we purchase these items and slightly modify them to fit our bumpers we have little control over the pricing.
Vintage Kart Bumpers
(click on picture for larger image)
To see
this front bumper chrome plated and mounted on a pristine vintage kart
click here.
To see this rear bumper chrome plated and
mounted on the kart click here.
These pictures were taken at the 2005 Vintage Kart Nationals at
Fremont, Ohio.
At one time we had a special order for a reproduction of an aftermarket
bumper that was produced for the Rupp Dart Kart and A-bone
kart. The original was made from 5/8 tubing. Our
first reproduction was made from 3/4 tubing but we now can produce them from 5/8" tubing. Producing this bumper
required the fabrication of a set of patterns and jigs. We are
offering these bumpers for $89 each, and $160 for a set of front and
rear bumpers. They are considerally more work to make than the loop
bumpers shown above. We do not provide chrome plating. The
customers had that done on their own.
We are willing to make reproductions of other vintage bumpers.
Please contact us for details.
Custom Nerf Bars
We made this set of custom nerf bars for a very successful Unlimited All-Stars racer to his specifications. We can do that for other racers as well. Nerf bars are more difficult to get an accurate fit so we prefer to have the old bars or the kart itself to make sure that the fit is correct. Of course pricing depends upon the complexity of the design and the amount of material that is required. Call or e-mail for details.
Testimonials
March 27, 2007
"First THANK YOU! The bumper arrived today... and is amazing, and fits PERFECTLY. It is 110% exactly what I was hoping for and I really could not have asked for anthing more. I will be sure to send anyone that asks where I got it in your direction...."
Curt Baker
February 24, 2007
We got our rear bumper. It fit perfectly. Top notch quality. Thanks for including extra decals for after we powder coat it.
Nick Joynt
September 15, 2005
I got my bumper last
night and checked the fit - perfect!! Everything about it looks
great and makes me feel that I'll be more secure when I use it.
Thanks very much,
Dave Malloy
April 7, 2005
To Order
Contact us by phone or e-mail.
To produce a custom loop style bumper
we need to know;
1. The center to center distance of the frame rails.
2. The overall length that you want the bumper to be.
3. If you want a symmetrical or off-set bumper. If you want
an off-set bumper, we need to know how much on each side.
4. Specify the Style.
5. What method that your kart uses for mounting.
6. Your shipping address.
7. Method of payment.
8. Your phone number.
We ship the bumpers UPS. Shipping and handling is usually between
$9 and $16 to most destinations in the continental United States.
Please allow 2 to 3 weeks for delivery.
We accept
To inquire or order contact;
Bergfelt Racing
Enterprises, LLC
4412 W. 6th Ave.
West Mayfield Boro
Beaver Falls, PA 15010-1915
(724) 847-3677
Fax (724) 847-1566
email: info@bergfeltracing.com
Page Updated 01-17-10
