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  #1 (permalink)  
Old 05-06-2020, 03:19 PM
erlobulldog's Avatar
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will a 16x5.5 rear wheel fit a stock shovelhead swing arm?

Just out of curiosity, can you fit a 16x5.5 wheel on a stock shovelhead swing arm? right now I got the stock 16x3.

I recently found out that Jeff Cochran (speed king racing) uses a 16x5.5 in his shovelhead swing arm frames.

Im wondering if you would either need a wider swing arm? or if not, would you have to offset the chain sprocket on the transmission?

I mean, Im hoping and wishing that it would just slide on in place and look something like this...but it may be wishful thinking.

thoughts?





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  #2 (permalink)  
Old 05-06-2020, 04:49 PM
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Quote:
Originally Posted by erlobulldog View Post
just out of curiosity, can you fit a 16x5.5 wheel on a stock shovelhead swing arm? Right now i got the stock 16x3.

I recently found out that jeff cochran (speed king racing) uses a 16x5.5 in his shovelhead swing arm frames.

Im wondering if you would either need a wider swing arm? Or if not, would you have to offset the chain sprocket on the transmission?

I mean, im hoping and wishing that it would just slide on in place and look something like this...but it may be wishful thinking.

Thoughts?





5.5 rim used on 180mm tire. In his case it's simply blown up 130 shinko on a bigger than normal 3.5 " rim - the tall side walls allow. The modification i believe requires wider frame/swingarm.

In the past we blew up 200 x 16 tires on 7 " rims and 230x15 tires on 10-11" rims. Very tough, huge gap. People just explode them on with starter fluid.

In stock frames people were able to squeeze 150 tires on smaller regular rims, indeed with a chain and just max offset of main shaft sprocket . Also perhaps may be needing to offset the whole primary/transmission.
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  #3 (permalink)  
Old 05-06-2020, 06:45 PM
erlobulldog's Avatar
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Quote:
Originally Posted by STEINBVG View Post
5.5 rim used on 180mm tire. In his case it's simply blown up 130 shinko on a bigger than normal 3.5 " rim - the tall side walls allow. The modification i believe requires wider frame/swingarm.

In the past we blew up 200 x 16 tires on 7 " rims and 230x15 tires on 10-11" rims. Very tough, huge gap. People just explode them on with starter fluid.

In stock frames people were able to squeeze 150 tires on smaller regular rims, indeed with a chain and just max offset of main shaft sprocket . Also perhaps may be needing to offset the whole primary/transmission.
Yeah, I agree. I have seen $40 offset transmission chain sprocket kits with a hub spacer that will allow a wider wheel on a stock swing arm. but obviously, the entire primary needs to be removed. but damn it does look good!

I think for now, ill just install that shinko tire on my 16x3.5 and see what's up...maybe it will look fine and I won't have to disassemble the primary and drop $1k on a custom swing arm, 16x5.5 wheel and new fender. here's hoping!
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  #4 (permalink)  
Old 05-07-2020, 02:19 AM
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Quote:
Originally Posted by erlobulldog View Post
Yeah, I agree. I have seen $40 offset transmission chain sprocket kits with a hub spacer that will allow a wider wheel on a stock swing arm. but obviously, the entire primary needs to be removed. but damn it does look good!

I think for now, ill just install that shinko tire on my 16x3.5 and see what's up...maybe it will look fine and I won't have to disassemble the primary and drop $1k on a custom swing arm, 16x5.5 wheel and new fender. here's hoping!
I think it looks just fine on 16x3.5
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Last edited by STEINBVG; 05-07-2020 at 04:44 AM..
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  #5 (permalink)  
Old 05-07-2020, 08:06 AM
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Quote:
Originally Posted by STEINBVG View Post
I think it looks just fine on 16x3.5
That does look great!
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  #6 (permalink)  
Old 05-07-2020, 08:43 AM
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your right...heres another 16x3.5 on a shinko 270



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