pro class crank issue .....  RSS Feed

#1 2012-09-05 6:29am

caligoose
Pro Member"Mr.Skittles"
From: Canton, MI
Registered: 2009-05-09
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pro class crank issue .....

so i have a non drive pro class arm ,

finding a mate is .. well improbable ,


i found another non drive  pro class arm
dose anyone see a reason why i cant weld crank pin   and ride " other than the threads will be reversed" ?

back side pic of pro class drive arm would help.

Last edited by caligoose (2012-09-05 6:40am)


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

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#2 2012-09-05 7:07am

JacksonHole22
Pro Member"Closet Hutch Fan"
From: Jackson, WY
Registered: 2010-07-11
Posts: 629
Bikes: 12
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Re: pro class crank issue .....

http://bmxmuseum.com/forsale/dscf2125_blowup.jpg

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#3 2012-09-05 7:10am

caligoose
Pro Member"Mr.Skittles"
From: Canton, MI
Registered: 2009-05-09
Posts: 2185
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Re: pro class crank issue .....

hmmm looks like i may be able to make it happen


now the  question is should i .......lol


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

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#4 2012-09-05 7:13am

killer
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From: Middle earth, Canada
Registered: 2011-10-26
Posts: 460
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Re: pro class crank issue .....

You'll nee 2 right hand pedals


Member of OFGF

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#5 2012-09-05 7:17am

caligoose
Pro Member"Mr.Skittles"
From: Canton, MI
Registered: 2009-05-09
Posts: 2185
Bikes: 1
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Re: pro class crank issue .....

sick , looks like ill have a decent set going for under 250$


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

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#6 2012-09-05 7:58am

whatupethan
Pro Membersmall potatoes
From: Downstream Detroit, MI
Registered: 2011-03-17
Posts: 2690
For Sale

Re: pro class crank issue .....

killer wrote:

You'll nee 2 right hand pedals

+1.......    & one may spin

Last edited by whatupethan (2012-09-05 7:58am)


44T Detroit..............................................................luvalooptail!
lookin for:   mint kkt or mks rat traps...  1/2 silver or black
Race inc bars...pro size                                                     

WANTED:  WEBCO MONOSHOCK  FRAME

'lil help,  plz...& thanks!

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#7 2012-09-05 8:10am

Coco
Pro MemberMore Fun Than a Hutch Thread
From: Saskatchewan
Registered: 2011-03-03
Posts: 5626
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Re: pro class crank issue .....

whatupethan wrote:

killer wrote:

You'll nee 2 right hand pedals

+1.......    & one may spin

Use Loctite, just not the red stuff.

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#8 2012-09-05 8:17am

mitchtram
Expert
From: USA
Registered: 2011-11-27
Posts: 588
Bikes: 7

Re: pro class crank issue .....

From Sheldon Browns Site:http://www.sheldonbrown.com/gloss_p.html




        Direction
        The right pedal has a normal thread, but the left pedal has a left (reverse) thread.

        The reason for this is not obvious: The force from bearing friction would, in fact, tend to unscrew pedals threaded in this manner. It is not the bearing friction that makes pedals unscrew themselves, but a phenomenon called "precession".

        You can demonstrate this to yourself by performing a simple experiment. Hold a pencil loosely in one fist, and move the end of it in a circle. You will see that the pencil, as it rubs against the inside of your fist, rotates in the opposite direction.

        Ignorant people outside the bicycle industry sometimes make the astonishing discovery that the way it has been done for 100 years is "wrong." "Look at these fools, they go to the trouble of using a left thread on one pedal, then the bozos go and put the left thread on the wrong side! Shows that bicycle designers have no idea what they are doing..."

        Another popular theory of armchair engineers is that the threads are done this way so that, if the pedal bearing locks up, the pedal will unscrew itself instead of breaking the rider's ankle.

        The left-threaded left pedal was not the result of armchair theorizing, it was a solution to a real problem: people's left pedals kept unscrewing! I have read that this was invented by the Wright brothers, but I am not sure of this.

        Note! The precession effect doesn't substitute for screwing your pedals in good and tight. It is very important to do so. The threads (like almost all threads on a bicycle) should be lubricated with grease, or at least with oil.


Have tons of punk/HC vinyl and will trade for bike stuff .. send me a PM!

**Will Trade Chrome Diamond Back double drop out / Dual position forks for red ones.**

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#9 2012-09-05 9:02am

whatupethan
Pro Membersmall potatoes
From: Downstream Detroit, MI
Registered: 2011-03-17
Posts: 2690
For Sale

Re: pro class crank issue .....

^^^^ what he said.... wink


44T Detroit..............................................................luvalooptail!
lookin for:   mint kkt or mks rat traps...  1/2 silver or black
Race inc bars...pro size                                                     

WANTED:  WEBCO MONOSHOCK  FRAME

'lil help,  plz...& thanks!

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#10 2012-09-05 9:12am

caligoose
Pro Member"Mr.Skittles"
From: Canton, MI
Registered: 2009-05-09
Posts: 2185
Bikes: 1
For Sale

Re: pro class crank issue .....

i may remove and flip pedal boss to make it easy on myself

thell need chrome or powder anyway ...

looks like a go big_smilebig_smilebig_smilebig_smilebig_smile


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

Offline

 

#11 2012-09-05 9:18am

Neil-Son
SuperSon
From: BMX museum
Registered: 2008-04-23
Posts: 12384
Website

Re: pro class crank issue .....

caligoose wrote:

i may remove and flip pedal boss to make it easy on myself

thell need chrome or powder anyway ...

looks like a go big_smilebig_smilebig_smilebig_smilebig_smile

threads would still be the same direction ...try it on a bolt

Last edited by Neil-Son (2012-09-05 9:21am)

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#12 2012-09-05 9:21am

JacksonHole22
Pro Member"Closet Hutch Fan"
From: Jackson, WY
Registered: 2010-07-11
Posts: 629
Bikes: 12
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Re: pro class crank issue .....

take some pics of the process...i'd be interested in seeing how this works.

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#13 2012-09-05 9:35am

caligoose
Pro Member"Mr.Skittles"
From: Canton, MI
Registered: 2009-05-09
Posts: 2185
Bikes: 1
For Sale

Re: pro class crank issue .....

will do !

i can accually have them made , even change the spindles to modern design .

but first set cost 600$ lol


I part out all my mongoose.   any and all . 1983-1987  its all I buy its all I sell .  I have more than ill ever need ,

my kids ride the dented stuff ..." for free "    you buy the goods cheep .   ive  assembeled more than 30 geese to og condition
it sucks parts are hard to find , but semi completes aren't hard to find at all .   if I buy your ride it will be parted w/o remorse .

but it will come back in pieces , and possibly become part of a complete ....

Offline

 

#14 2013-01-31 12:53pm

tomandemmy
Pro Memberbmxchatter
From: Spring Hill, TN
Registered: 2011-07-07
Posts: 1699
For Sale

Re: pro class crank issue .....

very cool !!! I wondered if you found another!


NOS old school goose items.

MONGOOSE 24" PRO CLASS III WHEEL

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