Aluminum race ramp extensions
#1
Rennlist Member
Thread Starter
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My new to me 06 Thule came with this horrible heavy and short ramp extension sooo....
Cut up and welded together some aluminum bars. Milled out for a weight savings.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP3.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP1.jpg)
Flexible interlock for uneven ground. They interlock in 2 directions.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP2.jpg)
And here you have the result. Not easy to see but the load on the hinges is not much more than the weight of the ramps. Lip on hinge billit rests on flap transfering load of car to trailer flap.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP4.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP5.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP6.jpg)
Cut up and welded together some aluminum bars. Milled out for a weight savings.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP3.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP1.jpg)
Flexible interlock for uneven ground. They interlock in 2 directions.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP2.jpg)
And here you have the result. Not easy to see but the load on the hinges is not much more than the weight of the ramps. Lip on hinge billit rests on flap transfering load of car to trailer flap.
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP4.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP5.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP6.jpg)
![](http://i19.photobucket.com/albums/b151/088scruffy/AUTOCROSS/RMP7.jpg)
#7
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Needs More Cowbell
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Needs More Cowbell
Lifetime Rennlist
Member
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Makes pushing a kart stand into the back of the trailer impossible ...![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
BSE has a 'sliding' mount for their ramps which eliminate the fixed hinge mount.
http://www.buffaloespeedenterprises.com/320085.html
http://www.buffaloespeedenterprises.com/793448.html
http://www.buffaloespeedenterprises.com/320086.html
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
BSE has a 'sliding' mount for their ramps which eliminate the fixed hinge mount.
http://www.buffaloespeedenterprises.com/320085.html
http://www.buffaloespeedenterprises.com/793448.html
http://www.buffaloespeedenterprises.com/320086.html
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#9
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Thread Starter
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Diamond plate and the stainless steel hinges were the only purchased materials. Bar stock was surplus inventory, and the CNC time was no biggie because I have huge amounts of open time on them. I tested the ramps without the bottom cord and they flexed about 5/8 with my ML500 at mid point. The 5/8 square stock more than doubled the strength of the ramps and added very little weight. I wish I did have too much time on my hands but I don't. I have had this trailer since April and this weekend was the first time I have used it because I could only work on them a few hours a day, or the occaisional Saturday. I started them in early May. I don't need a pit cart for autocross but can easily add a smaller fold down ramp between the other ramps.
#10
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Makes pushing a kart stand into the back of the trailer impossible ...![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
BSE has a 'sliding' mount for their ramps which eliminate the fixed hinge mount.
http://www.buffaloespeedenterprises.com/320085.html
http://www.buffaloespeedenterprises.com/793448.html
http://www.buffaloespeedenterprises.com/320086.html
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
BSE has a 'sliding' mount for their ramps which eliminate the fixed hinge mount.
http://www.buffaloespeedenterprises.com/320085.html
http://www.buffaloespeedenterprises.com/793448.html
http://www.buffaloespeedenterprises.com/320086.html