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Message started by LesGolden on 07/09/07 at 20:32:47

Title: Am I crazy?
Post by LesGolden on 07/09/07 at 20:32:47

Ok, so for those who don't know, my top end went kaput. So here's the crazy. I welded the broken cam back together and added some material to the lobes and reground them. Now I just gotta set up an old grinder motor as a lathe and polish up the bearings and lobes. I figure I'll get a few hundred miles out of 'er goin' like crazy with a high lift and reasonable duration. Since I've got another bike now Suzi's gonna be a NASTY chopper/rat rod anyway, am I crazy to try to rework the cam myself? I know the reliability won't be there but do ya'll think it will just come apart right away? I wonder what web does to "hard weld" the lobes.. hmmm...

Title: Yoda says:
Post by Paladin on 07/09/07 at 21:22:17

There is no Try. There is DO, or Do Not.

You learn by destroying. My title under my handle on the Teleco forun is "Destroyer of Equipment." My personal best was disrupting all military communications between Europe and the Near East for four minutes. Another person on this forum is known as Wonton Destruction. Your cam re-work will function, or not. Either way you learn. Learning is never crazy.

Title: Re: Am I crazy?
Post by LesGolden on 07/09/07 at 22:25:15

Absolutely right! For a moment I almost forgot that I don't try anything! This could end up fun though, will home modifying a cam work? We will find out. I'll jbweld up the gouges in the head and see what happends!

P.S. I have no idea AT ALL what I'm doing, even as far as measuring what lift and duration i come up with! (well, i could maybe measure lift... Should i go for a bit more overlap too? no, no, I just want really insane low end, pull your arms out insane) So as i update this, remember, NO ONE TRY ANY OF THIS. It will most likely destroy your motor. If you really need more power get a carb and cam from Lancer, they're great products. Hmm, if I can find a cheap high pressure bottle somewhere i'll throw nitrous on it too, why the heck not, worst case i'll end up resleeving and buying another head!

Maybe I should have titled this post "the best way to break a savage", or "beating a dead horse for ponie"s?

Title: Re: Am I crazy?
Post by serowbot on 07/09/07 at 23:11:18

No guts, no glory!
At the least, you will a tale to tell. I await updates!

Title: Re: Yoda says:
Post by Rockin_John on 07/10/07 at 01:41:31

Paladin wrote:

Having worked as an Engineering Tech in some heavy manufacturing over the years; besides getting to prototype lots of new designs, I was also happily assigned the duty of "destructive testing" of some large equipment. What is it that is so fun about tearing stuff up??? Wait... I know what it was... it was because I wasn't paying for it!!! ;D

Title: Re: Am I crazy?
Post by Rockin_John on 07/10/07 at 02:10:19

LesGolden wrote:

Les... If I might ask, with what equipment and material did you weld the cam back together? Even a simple stick weld with a good hot low hydrogen rod like a 7018 can yield a metal with some serious hardness. I've been admiring some TIG and Plasma equipment ever since having my welder neighbor do some exhaust work for me with his fancy gear. That stuff has come a long way since I worked a weld shop.

Title: Re: Am I crazy?
Post by vroom1776 on 07/10/07 at 08:09:48

no. go for it. all out.

let us know how much torque at the rear wheel it will take to stretch a new cam chain past spec instantly ::)

Title: Re: Am I crazy?
Post by LesGolden on 07/10/07 at 21:38:34

35$ dyno runs on the 15! I may actually be able to give you that info vroom!!! I'm sure something will be out of spec anyway...