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Author Topic:   Solid Pull Bar
Super42
Dirt Roller

Total posts: 7
posted November 16, 2005 07:09 AM  
Using swing arm LR and 2-link RR both hooked to clamped brackets on the rear end, RR coil over on top of the housing. Is there any disadvantage to using a solid pull bar over a spring loaded pull bar for this type of setup. Since the spring loading is not affected by the rotation of the rear housing, I thought there may be some advantage to using a solid pull bar because the angle of the j-bar will not change due to axle wrap, and I can run less pinion angle. It also eliminates one moving part that may have a negligible affect anyway.

Thanks for any input.

psycho47
Dirt Full Roller

Total posts: 51
posted November 16, 2005 07:26 AM  
The spring allows a cushioning effect of the torque to the rear tires. It might have some minor affect based on where the springs or placed because of lack of indexing but a spring (or biscuit) rod would outperform a soild pullbar on all but the most extremely tacky tracks.

wfoondirt
Dirt Forum Champ
Total posts: 508
posted November 16, 2005 09:08 AM  
Its a driver preference thing. I've had sucess with both. If the driver is capable of keeping the tires under him with a solid bar there is no reason to run a spring loaded bar. Any compliant link is wasted energy. If you look at one lap as a whole the amount of time that the spring actually can help you is a small fraction of the whole.

If you do a search on here you should find a thread that discussed this in more detail.

rpm20
Dirt Freak

Total posts: 340
posted November 16, 2005 10:39 AM  
i like a solid bar on the tack and a spring on the slick. used one last season and it worked well, i dont run a 10-90 shock on my springbar at all any more also.

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