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Author: Subject: Trigger wheel mounting
IainB
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Registered 17/11/05
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Building: Fiat X1/9 - GRP widebody, Bike carbs, Megajolt

posted on 11/7/06 at 12:16 PM Reply With Quote
Trigger wheel mounting

I know most people remove crank pully nut and or pully to mount trigger wheel but i have a tapered pully which means this is not possible (the nut sits about 10mm inward from the outer face of the pully).

I just had my trigger wheel milled out so it slides onto a small circular ridge on the pully but now I come to how to secure it.

The pully is cast and the wheel is mild steel. is welding a good idea or could this cause cracking? not too keen to drill and tap to bolt it on for the same reason..

Any input would be great,
cheers, Iain





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02GF74

posted on 11/7/06 at 01:36 PM Reply With Quote
Not done it so who know if it will owrk but what about glueing it and a small roll pin to keep it from rotating (I guess you would use 2 at oppsoite ends for balance)
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stevebubs

posted on 11/7/06 at 07:10 PM Reply With Quote
Welding probably isn't too good an idea but brazing should be fine.
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fully sideways

posted on 13/7/06 at 05:38 PM Reply With Quote
Hi Ian,
My first thought was i would of had an interference fit and pressed it on but yours slides on ..

you can either Braze it together or use "dis-similar" welding rods to combat the heat dispersal and diffrent cooling properties ..

Hope this helps

Andrew.





Is throttle wide open ?

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02GF74

posted on 14/7/06 at 07:11 AM Reply With Quote
I often wonder why people don't machin the notches in the crank pulley itself (the missing tooth may cause balancing issues but shouldn;t be that hard to rectify).
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