![early durffe girder front end. early durffe girder front end.](https://i.ytimg.com/vi/1cNfA6Cr23s/hqdefault.jpg)
The rider feels the bump but the energy is mostly absorbed by the springs and does not jar your fillings out. When the tire rides over the top of the bump, the springs magically push it down again, no need to wait for gravity. The springs compress as the tire hits, storing up the energy so the tire can follow the shape of the bump. Also, landing is a bit hard on the spine and kidneys.Ī vehicle with suspension can absorb the bump and keep going while maintaining control. Cool, right? The problem is, with your tires off the ground you cannot stop, steer, or speed up very well. It continues in the air until gravity pulls it back down. If there is enough forward energy for the vehicle to pass over the bump, it will be deflected into the air.
#Early durffe girder front end. driver
If there is not enough forward inertia to push over the bump, the vehicle stops instantly and the rider or driver gets thrown off. When that vehicle hits a bump only one of two things can happen-it either stops dead or keeps going. Imagine vehicle with no suspension at all, like a skateboard. MOTORCYCLE: The Basics: Modern Motorcycle Suspensionīeyond the obvious comfort value, a suspension’s most important job is to keep the tire in contact with the road. How engineers control and minimize the effect of that bump is one of the biggest challenges in motorcycle design. Instead of a pretty tame old-person dance, it’s an obstruction in the road that jars your entire bike and body when you slam over it. For motorcyclists though, the bump is something completely different. Videos exist, I recommend that you do not watch them. You and your partner just stood beside one another and bumped hips while Parliament-Funkadelic laid down the beat. It was pretty simple as 70s-era dances went. "I've heard nightmare stories about the Indian repops actually cracking.What about the bump? In 1976, yours truly was in seventh grade and The Bump was the most popular dance around. I also wonder if just because these repro girders are made in India that automatically the quality must be inferior ?
![early durffe girder front end. early durffe girder front end.](https://4.bp.blogspot.com/-hDVC1rAdeSk/VrPTKA4YjqI/AAAAAAAAa2w/G9Plfh3Arak/s1600/relic_fulres_cutout.jpg)
firm or two hasn't stepped up to reproduce these ? The chopper part makers were able to turn out thousands of them back in the '70's so it is a possibilty that tooling stil exists to be put back into operation. I do wonder why an American - British - Australian - etc,etc.
![early durffe girder front end. early durffe girder front end.](https://motorcyclemojo.com/wp-content/uploads/2011/08/MG_1782.jpg)
I am inclined at the moment to spend the $500 to prove/disprove the reports, as up until now, I have not been able to find a reliable source concerning these Indian girders. If you have evidence of this or can point me in the direction of a thread or two that clearly indicates that the Indian girders are prone to cracking, I would really like to see and or hear about it? michealĪre you by chance referencing the discussion thread from the Jockey Journal concerning the Indian made girders? I did not find any conclusive evidence from that thread or any others that I have seen that indicates without a doubt that those girders are prone to cracking. as with geoff im stalled here for a lack of information.
#Early durffe girder front end. how to
i would be pleased to show photos of the work, however, i dont know how to enter that kinda of info to the net. i was planning on tiging the stuff together and without lugs but in some sort of jigs. i cant afford to farm work out and besides building things is my passion and its what i do. the two m/cs are similiar enough in size and weight i think to use the bsa parts as a pattern. or some type of reliable confirmation that the m-20s are close enough to use as a pattern for the tr. that why i am looking for real mesurenents taken off a set of tri forks. the dimensions are also different than those of the m-20s. each time i do it i get different measurements. they are what gis called od green and pretty much complete.(this IS NOT an ad for their sale) ive scaled out several sets of photographs of triumph webb forks. i dont wish to cut them up in anyway as they would be of real help to a wartime bsa owner. the m-20's are mine and in very good, but dusty, shape. Thanks fellows: ive stockpiled 3/4 and 5/8 dom tubing.