Crankshaft Assembly Question

  • SWest
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Re: Crankshaft Assembly Question

01 May 2023 08:31
#884057

When I enlarged the video to full-screen with highest resolution, the playback would stop every couple seconds and provide a frozen momentary view.

Got me curious how a roller crank is balanced with rods flying all over...

.

Is the crank first dry-assembled, trued and balanced without the rods...then pulled apart, and welded together as it is final-assembled with them? 

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1982 KZ1100-A2

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Re: Crankshaft Assembly Question

01 May 2023 09:14
#884061
.

Is the crank first dry-assembled, trued and balanced without the rods...then pulled apart, and welded together as it is final-assembled with them? 

.

Yes!
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





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Re: Crankshaft Assembly Question

01 May 2023 09:19
#884062
And I believe the rods are weighed and made to be the same by taking off material to match the lightest one. On their page they show a Harley crank and the welds are tiny compared to other ones I seen. 
Steve

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Re: Crankshaft Assembly Question

01 May 2023 09:44 - 01 May 2023 09:45
#884065

When I enlarged the video to full-screen with highest resolution, the playback would stop every couple seconds and provide a frozen momentary view.

Got me curious how a roller crank is balanced with rods flying all over...

.

Is the crank first dry-assembled, trued and balanced without the rods...then pulled apart, and welded together as it is final-assembled with them? 

My 8.1 laptop is having the same trouble. Little note at the top says it's not supported by GOOGLE anymore.   Guess it's going the same way as my XP desk top. 
Plays fine on my 11 machine....,At least for a while. 
BTW these aren't welds only where the prepped it for welding. 
Steve

 

.
Last edit: 01 May 2023 09:45 by SWest.
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Re: Crankshaft Assembly Question

01 May 2023 10:05 - 01 May 2023 13:04
#884066
.

Is the crank first dry-assembled, trued and balanced without the rods...then pulled apart, and welded together as it is final-assembled with them? 

.

Yes!



 

Is material removal during the balancing process a possible explanation for the ground-off areas of the counter-weight shown in the image below?:



1982 KZ1100-A2

Last edit: 01 May 2023 13:04 by daveo.

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Re: Crankshaft Assembly Question

01 May 2023 10:13
#884067
Looks like it. 
BTW Jake Cooper has welded cranks for sale out of drag bikes he's broken down on KZMarket. Also Marketplace. I wonder if he has a 903 crank for sale. 
Steve
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