crank shaft too short

[DCProductions]

I've already got parts shipped in, r chez, and I know a guy with a lathe. I appreciate the offer.

Also it just occurred to me that since this isn't my thread you may not be talking to me... so I should stop now before I hijack it. I have to return some video tapes anyway.

 

[r_chez_08]

haha yeah i was talking to scotty, as he is in the uk too, and postage to the usa is a killer.
Rob

 

[DCProductions]

Lol out loud!

Hope you chaps can get this done. I'll be keeping up with the thread. Post pics too please!

 

[scottydog]

Cheers

good idea. if you want me to make the adapter i can make it in a few weeks, it will probably be about a tenner for the postage and materials etc.
if you tell me the exact sizes i will make it.
rob

ill defo take you up on this over if your up for the challenge. ill get the sizes too you. think you could do two for £20 one for future project

 

[r_chez_08]

yeh, if you give me the sizes exacly, i will make what you want.
could you give me engineering drawings like this:
http://www.design-technology.info/IndProd/_wp_generated/ppa3ff164e.png
they may take up to a month to get to you if thats ok, i will do them asap tho
Rob
edit: i can make them out of harder steel or stainless, not mild steel for a bit more money if you wish.

 

[scottydog]

prob would be better made of are hardened steel. ill get the drawns made up and get them to you
.

 

[r_chez_08]

Ok, thanks
Do you have paypal?
Rob

 

[scottydog]

yeah can do it through paypal if you want

 

[r_chez_08]

Okay, get some drawings and I will try and make them next week/ week after for you
Rob

 

[r_chez_08]

hi,
im back at school now, so if you have the drawings i will make them up out of hard steel or stainless.
Rob

 

[DCProductions]

Hey guys
Just wanted to let you know that I will be adding an extension on my crankshaft in a couple of weeks. I will let you know how it goes if I get it done before you. If not, I'll keep taking notes.
Good luck!

PS: When welding the extension, my friend suggested soaking asbestos cloth in water and wrapping the crankshaft to keep the oil seal from marring. The cloth would absorb heat fast, but not fast enough to warp. Hope this helps

 

[r_chez_08]

Good idea, I have heard that somewhere too.
Rob

 

[DCProductions]

Hey guys!

I just wanted to let you know that I got the extension on the crankshaft, and it works great! Here was the process: my friend bored a 5/16" hole out of the middle of a 1" (maybe 1-1/4"?) length of 3/4" jackshaft. The extension is not threaded because lining up threads with the original would be very difficult. He then tig welded it into place, keeping the keyway aligned and the butting surfaces flush. To keep the crank seal from being damaged, he wrapped the crank with water soaked asbestos cloth. Filing down the weld was the final touch on this modification. Previously, my driver pulley had about 1/8" contact with the crank because of all the spacers, plates, alignment etc. Now it has near complete contact. I don't expect the extension to handle extreme loads, but the pulley still contacts the original shaft enough for me not to worry. Here are some pics:

Hope this helps!

 

[Garified]

Wow, your friend did a really neat job.

 

[r_chez_08]

Good job did he use a lathe?
I hope to fix my clones crankshaft at some stage because the end got damaged.
Rob

 

[DCProductions]

Wow, your friend did a really neat job.

I'll transfer the compliment!

Good job did he use a lathe?
I hope to fix my clones crankshaft at some stage because the end got damaged.
Rob

He did use a lathe both to bore the 5/16" hole and to flush the edge which would contact the crankshaft end. He suggested welding with tig for control, but I'm sure mig would work fine. I don't know about arc; I think that would be pretty hard/ messy.