21 inch wheel?

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Oct 24, 2009 | 01:26 PM

#21

piniongear

Stellar HDF Member

Joined: Feb 2006

Posts: 3,035

Likes: 17

From: Houston Texas

Quote:

Originally Posted by EvilWayz

http://cgi.ebay.com/ebaymotors/Harle...item563609da2b

Y'all think this wheel would fit on the back with the old axle?

You have more than simply the size of the tire to consider before you go dumping money into a tire purchase:

Measure the width of your frame at the smallest area that the tire will occupy. This measurement will tell you how wide a tire you can use.
Make this measurement with the old wheel and rear chain installed.
Any new wide tire is going to have to miss the rear chain.
You will find that the chain alone will go a long way towards restricting you on tire width.

Next consideration is your rim size. How wide is your present rim? How wide a tire will it take?

I am betting that putting a very wide tire such as the one you are looking at on Ebay may mean you need a different rim so that this tire fits. We assume at this point that the tire does not hit the chain.

Once you get a tire that will fit within your frame space and have a rim that is suitable for the new wide tire, the next step is to fit the tire to the rear section of the bike.

You do this by setting the rim in a position over the rear hub so the rim (and tire) is centered under the rear fender.

You cannot center a tire under the rear fender by inserting washers or spacers on one side or other of the axle. The rear chain is positioned by the location of the front sprocket....which is fixed in place.

The chain runs straight back and this fixes the sprocket and rear wheel in a fixed location too.

So, you get the tire and rim centered under the rear fender by loosening the spokes on one side of the wheel and tightening the spokes on the other side of the wheel.
This is the only way a wheel may be centered. Period!

So now you have 2 wheels to build. The front 21 inch and a rear wheel with new wide tire and probably a new rim as well.

As for the Ebay tire....... I feel I need to comment on that.
$130 is a lot of money for a used tire. 1500 miles and barely used? Well, from the single pic of it the tire looks like it has been run many more miles than that, to me anyway. What are those dark black spots on the right? Cuts?

Last week I bought a brand new Dunlop for the rear of my Dyna and paid $136 for it. It had no miles on it.
Anyway, just my 2¢ again.........
pg

Oct 24, 2009 | 01:56 PM

#22

EvilWayz

Thread Starter

Tourer

Joined: Aug 2009

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i think i might be getting ahead of myself. im going to stick with a standard 18 on the back for now.

pg where do you get them diagrams from?

Oct 24, 2009 | 02:56 PM

#23

piniongear

Stellar HDF Member

Joined: Feb 2006

Posts: 3,035

Likes: 17

From: Houston Texas

Quote:

Originally Posted by EvilWayz

i think i might be getting ahead of myself. im going to stick with a standard 18 on the back for now.

pg where do you get them diagrams from?

You will find them in factory service manuals.
pg

Dec 9, 2009 | 10:39 AM

#24

tattootank

Stage IV

Joined: Dec 2009

Posts: 4

Likes: 0

rear brake on forward controls

got the bike as a pile and trying to redo but not sure with forward controls the thru frame rod is being used for the shifter now and can not seem to figure out how it all goes together anyone have any experience withthat

Dec 9, 2009 | 10:55 AM

#25

IronMick

Stellar HDF Member

Joined: Jun 2008

Posts: 3,179

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From: London, ON Canada

Can you post a pic of the forward control parts? Is your bike a 1975 or 1976, or what year?

Dec 9, 2009 | 11:01 AM

#26

tattootank

Stage IV

Joined: Dec 2009

Posts: 4

Likes: 0

its a 71

Dec 9, 2009 | 11:03 AM

#27

tattootank

Stage IV

Joined: Dec 2009

Posts: 4

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its a 71 and not really savy on loading pics and stuff sorry

Dec 9, 2009 | 11:06 AM

#28

tattootank

Stage IV

Joined: Dec 2009

Posts: 4

Likes: 0

all i know is that they have used the cross shaft for the new frwd cntrl shifter and some rod system with a spring on it for the rear brakes and cannot seem to find any good pics on line of what they have done