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Technical & Reference Section => Tech and Restoration => Topic started by: oldboyburner on March 16, 2013, 08:31 PM

Title: Motomag coaster help please #SORTED PICS ADDED OF JOB
Post by: oldboyburner on March 16, 2013, 08:31 PM
I have a rear motomag with out the coaster on and it feels like its a fixed gear can I use parts from the rear coaster hub I have to convert into a coaster brake any help would be great cheers mark
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/1b453d219e4cc2c3df0159c3c3f53c1e.jpg)
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/402d9d942841e106feda69073231263c.jpg)
Title: Re: Motomag coaster help please
Post by: not johndub71 on March 16, 2013, 09:18 PM
That's a tough one.Is the coaster mexican made? Your coaster there is for spokes, so unless there's some internal significance, nope... I would strip the free wheel mech and grease/lube it. Good luck.
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 16, 2013, 09:26 PM
That's a tough one.Is the coaster mexican made? Your coaster there is for spokes, so unless there's some internal significance, nope... I would strip the free wheel mech and grease/lube it. Good luck.

The spoked hub is Mexican too
How do I strip the free hub any info on that please
Title: Re: Motomag coaster help please
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 09:37 PM
wish i could help mark  :-\

sweet paint work on them  ;)
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 16, 2013, 09:49 PM
wish i could help mark  :-\

sweet paint work on them  ;)

Cheers bendy  :daumenhoch:
Title: Re: Motomag coaster help please
Post by: bof on March 16, 2013, 11:15 PM
I have a rear motomag with out the coaster on and it feels like its a fixed gear can I use parts from the rear coaster hub I have to convert into a coaster brake any help would be great cheers mark
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/1b453d219e4cc2c3df0159c3c3f53c1e.jpg)
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/402d9d942841e106feda69073231263c.jpg)

 when you say '' it feels like a fixed gear '' do you mean it feels really easy to pedal? You have a 19 tooth sprocket on   the back . The average feel right gearing for a bmx is 44 16. All you need to do is find a 16 tooth rear sprocket and it should then feel ok to ride :-)
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 16, 2013, 11:31 PM
I have a rear motomag with out the coaster on and it feels like its a fixed gear can I use parts from the rear coaster hub I have to convert into a coaster brake any help would be great cheers mark
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/1b453d219e4cc2c3df0159c3c3f53c1e.jpg)
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/402d9d942841e106feda69073231263c.jpg)

 when you say '' it feels like a fixed gear '' do you mean it feels really easy to pedal? You have a 19 tooth sprocket on   the back . The average feel right gearing for a bmx is 44 16. All you need to do is find a 16 tooth rear sprocket and it should then feel ok to ride :-)

Hi feels like it will keep the cranks turning when stopped pedalling like its stuck
Does that make sense
Title: Re: Motomag coaster help please
Post by: not johndub71 on March 17, 2013, 08:24 AM
http://www.google.co.uk/imgres?imgurl=http://www.trfindley.com/fl_bike_pages_pics/bndxcbhz.jpg&imgrefurl=http://www.trfindley.com/pgbndxhbs.html&h=864&w=1091&sz=103&tbnid=YHbLQ5zBxGbykM:&tbnh=96&tbnw=121&prev=/search%3Fq%3Dbendix%2Bcoaster%2Bbrake%2Bdiagram%26tbm%3Disch%26tbo%3Du&zoom=1&q=bendix+coaster+brake+diagram&usg=__JQitCURCkTVn8QL0Nk4Z4PhE-sA=&docid=hixW6pQdyxWOzM&sa=X&ei=AH1FUaGTFLHu0gWQ2YG4Bg&ved=0CDUQ9QEwAQ&dur=4353

I would say your drive screw lug is playing up. On an old skool free hub, the free wheel mech was a stripped down coaster. Suntours dismantled cog first, i would guess the bendix would too.
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 17, 2013, 09:59 AM
Cheers johndub71 will have a look later  :daumenhoch:
Title: Re: Motomag coaster help please
Post by: not johndub71 on March 17, 2013, 06:00 PM
No worries.
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 18, 2013, 09:23 PM
No worries.

There's sand from sand blaster in the gear strip n clean will sort it cheers
Title: Re: Motomag coaster help please
Post by: not johndub71 on March 19, 2013, 08:42 PM
Brill.
Title: Re: Motomag coaster help please
Post by: oldboyburner on March 19, 2013, 09:37 PM
Some pics of the job in hand the inner rear hub on motomag 11
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/b5d73ad4b3470b0a305fea691d5e6e34.jpg)
All the bits bearings are tight to get out of the inner
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/f4db9717039da4faae49bacee90443ea.jpg)
All fitted back up and running sweet
(http://www.radbmx.co.uk/archive/albums/g95/oldschoolburner/42c7072fcac0e9a020911ca0a6ffb97f.jpg)
Cheers again John

OBB
Title: Re: Motomag coaster help please #SORTED PICS ADDED OF JOB
Post by: not johndub71 on March 20, 2013, 10:47 AM
My pleasure. Internals look great too. Built eh!
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