Manic Mechanic CUSTOM Hub Adapters

Manic Mechanic is now making custom sized hub adapters to fit
any hub that measures from a minimum diameter of 0.900"
to a maximum diameter of 1.770"

Check it out here.
CUSTOM ADAPTERS

Creative Engineering has just added a 2nd CNC machine so they
can now offer their original custom sized hub adapter once again.

Hub adapter blanks are on the shelf ready to be machined to fit
your hub and are being shipped within 2 business days by Priority
Mail for only $45 total.

Manic Mechanic has a new dot com website. www.mmbikeparts.com

The_Aleman said:

The part was well finished and came with 2 sets of hex-head cap screws. 1 set countersunk and the other set pan head. Allen wrenches for each type were included.

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Check out the hub adapter animation and FAQ's
ADAPTER FAQ'S

Pilotgeek said:

Likely one of the best extras I purchased for my bike. In fact, these shouldn't be an "extra", they should be mandatory on any good bike. Pics coming soon of my install.

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Where are those pics?

mandatory? LOL
MM sprocket hub adapters can be used on just about any
36 spoked wheel now and they take a lot of the aggravation
out of installing a kit as well as adding a safety factor so
maybe you are right!

Manic Mechanic has a new dot com website. mmBikeParts.com

Jim the manic mechanic of Creative Engineering also sponsors
Motorized Bicycle racing in California. MM generously donated
so many sprocket adapters, sprockets and his now unavailable
copper exhaust gaskets that it was hard to give them all away
at the first ever CA race at Willow Springs. Thank you Jim and Karen!

Just in case anyone thinks it's hard to install a MM adapter,
check out the cool animation below.
It's a very easy 5 minute one time install that never will slip if sized
correctly.
Jim has actually made adapters as small as a 5/8" / 0.625" ID for
several experienced and competent motorbikers and there was
zero problems with about 12 of them.

However the smallest size made now is 0.9" because a few users will
not get it right with such a small surface area but it more than proved
how well they grip.
MM adapters were designed in SolidWorks then analysed with FEA
software so the gripping surface area would give a slight crush onto
the hub.
Any more surface area would be a detriment and actually not grip as well.

Jim would never ask his users to determine what kind of surface area was
needed to work. Engineering is not a poll on a forum! LOL

PS: FEA stands for Finite Element Analysis Google it lol

The next real world test was to bolt a long cheater bar onto
a hub adapter mounted sprocket and put a lot of force on the bar.
The result was that the spokes started to give and would have ripped
out of the hub if the force was continued.

So the spokes will fail way before a MM hub adapter.

If you don't believe it try it your self....LOL

Some of the 4 stroke guys are running huge 72 teeth sprockets on
MM adapters with zero slipping problems.
There is NO need to increase gripping area on a MM hub adapter.

Also only a 2 piece design has the right amount of "flex" to put a bit of
crush on the hub. A 3 piece deign was tried and rejected by MM early on
even though it was quite a bit cheaper to manufacture.

culvercityclassic said:

I am have one on my hi horsepower four stroke with no problems...never had a problem with any of them on all my bikes. I am happy...

I also run pats product also, which has all the options ready to go. It a great product no doubt and will continue to use it. I have also met Pat at Willow and he is a top notch guy with awesome stuff.

I hope I am not in the middle of this debate... Not my style

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No worries, I don't know why this is such a big deal after all
this thread is about Custom Sized sprocket adapters.

Jim the manic mechanic is the Only manufacturer and seller
of an adapter that will fit just about any 36 spoked wheel.
Maybe 32 spoke wheels again soon too if there is a demand.

You would think that everyone would be thrilled to have this unique
custom option available again for motorbikers?

No one else is going to or could at the $45 Priority Mail shipped price.

When you only offer one size for a coaster no less why would this upset
anyone??? Not very sporting in my opinion.
I hate coaster brakes and now once again have a way to put a sprocket
on the wheels I really want to use so MM is a hero to me.
Cool parts for the motorbiking people!!!

PS: here is a high quality 2 jaw chuck manufacturer even though the analogy
between chucks and hub adapters is not a very good one if you really
think about it.
http://www.workholding.com/BUCK-SOLID-2-JAW-POWER-CHUCKS.htm

Buck is a premier name in quality chucks

I nearly missed your pics because you didn't make a new post.

Great close up detail which clearly shows why a 2 piece adapter was
the original and superior design.
Will never slip. Hope you used a cheater bar on that allen wrench that
MM includes with every adapter. A class touch from a top class company.

Pilotgeek said:

Likely one of the best extras I purchased for my bike. In fact, these shouldn't be an "extra", they should be mandatory on any good bike. One good reason is that you can very easily adjust how close the sprocket rides to the spokes. This makes it easy to adjust alignment with the engine sprocket.

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Goat Herder said:

My lord those little allen bolts are only rated for so much torque! I remember back in the day ramping B.M.X. bicycles and we did that on stripped handle bars... You have to use a a cheeter bar to keep the darn thing from slipping. Just joking just jokimg

Both adapters will work guys! I kinda like the 3 jaw my self.

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Those 3 little allen bolts holding the sprocket on are 3/8" and very beefy so
they take lots of torque.