Author Topic: CBR 1000 front end swap  (Read 5735 times)

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Offline turboed13b

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Re: CBR 1000 front end swap
« Reply #25 on: February 04, 2016, 07:01:41 PM »
Alright sounds good, since the stock rear is 2.5 could I just put that up front and buy a 3.5 for the rear? This shouldn't effect the rear drum brake right?

Spoke angle is wrong to put a the rear rim on a smaller hub. You will have bending spokes and nipples I just went through this on my 550.

Turbo, you should listen bud, it is easy to do, you just have to change the spoke pattern, you've been told this on your thread and here...?

It has nothing to do with spoke pattern the angle on the rear rim is drilled for a larger brake hub. When putting the rear rim on a smaller hub the spoke angle causes the spokes to bend at the nipple and arc.

Offline Retro Rocket

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Re: CBR 1000 front end swap
« Reply #26 on: February 04, 2016, 07:06:27 PM »
Alright sounds good, since the stock rear is 2.5 could I just put that up front and buy a 3.5 for the rear? This shouldn't effect the rear drum brake right?

Spoke angle is wrong to put a the rear rim on a smaller hub. You will have bending spokes and nipples I just went through this on my 550.

Turbo, you should listen bud, it is easy to do, you just have to change the spoke pattern, you've been told this on your thread and here...?

It has nothing to do with spoke pattern the angle on the rear rim is drilled for a larger brake hub. When putting the rear rim on a smaller hub the spoke angle causes the spokes to bend at the nipple and arc.

Go back to your thread and re read what Cal said, you don't change the pattern, its to do with where you put the spokes in the hub, you change some from outside to inside or something like that....

From YOUR thread...

Quote
A stock 40 hole 18" rim of up to 3.50" will fit inside a gsxr front end (modern USD I'm assuming). The trick to lacing it is you must use an inside-inside pattern to keep the spoke angle shallow enough to avoid the calipers.

If you call Buchanans, they actually have spokes for this very lacing pattern having partnered with CognitoMoto to measure and make spokes for his hub.
750 K2 1000cc
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If You can't fix it with a hammer, You've got an electrical problem.

Offline turboed13b

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Re: CBR 1000 front end swap
« Reply #27 on: February 04, 2016, 07:11:40 PM »
Alright sounds good, since the stock rear is 2.5 could I just put that up front and buy a 3.5 for the rear? This shouldn't effect the rear drum brake right?

Spoke angle is wrong to put a the rear rim on a smaller hub. You will have bending spokes and nipples I just went through this on my 550.

Turbo, you should listen bud, it is easy to do, you just have to change the spoke pattern, you've been told this on your thread and here...?

It has nothing to do with spoke pattern the angle on the rear rim is drilled for a larger brake hub. When putting the rear rim on a smaller hub the spoke angle causes the spokes to bend at the nipple and arc.

Go back to your thread and re read what Cal said, you don't change the pattern, its to do with where you put the spokes in the hub, you change some from outside to inside or something like that....

From YOUR thread...

Quote
A stock 40 hole 18" rim of up to 3.50" will fit inside a gsxr front end (modern USD I'm assuming). The trick to lacing it is you must use an inside-inside pattern to keep the spoke angle shallow enough to avoid the calipers.

If you call Buchanans, they actually have spokes for this very lacing pattern having partnered with CognitoMoto to measure and make spokes for his hub.


That has nothing to do with what I am talking about my hub is already laced with inner spokes since it is a Harley hub.

Offline Retro Rocket

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Re: CBR 1000 front end swap
« Reply #28 on: February 04, 2016, 07:44:30 PM »
Alright sounds good, since the stock rear is 2.5 could I just put that up front and buy a 3.5 for the rear? This shouldn't effect the rear drum brake right?

Spoke angle is wrong to put a the rear rim on a smaller hub. You will have bending spokes and nipples I just went through this on my 550.

Turbo, you should listen bud, it is easy to do, you just have to change the spoke pattern, you've been told this on your thread and here...?

It has nothing to do with spoke pattern the angle on the rear rim is drilled for a larger brake hub. When putting the rear rim on a smaller hub the spoke angle causes the spokes to bend at the nipple and arc.

Go back to your thread and re read what Cal said, you don't change the pattern, its to do with where you put the spokes in the hub, you change some from outside to inside or something like that....

From YOUR thread...

Quote
A stock 40 hole 18" rim of up to 3.50" will fit inside a gsxr front end (modern USD I'm assuming). The trick to lacing it is you must use an inside-inside pattern to keep the spoke angle shallow enough to avoid the calipers.

If you call Buchanans, they actually have spokes for this very lacing pattern having partnered with CognitoMoto to measure and make spokes for his hub.


That has nothing to do with what I am talking about my hub is already laced with inner spokes since it is a Harley hub.

Ok , I wasn't thinking Honda rear rim, I was just thinking an 18 for the front, I see that the drilled angle on the honda rear rim would be shallower than the holes drilled on a smaller front hub causing the binding.... Sorry about the confusion. Chops you'll have to source a rim to suit the front hub mate, which shouldn't be a problem, sorry for all the confusion... :o
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline ChopSticks

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Re: CBR 1000 front end swap
« Reply #29 on: February 05, 2016, 07:12:33 AM »
alright sounds good, so no rear rim will fit at all right?

Also is there a reason why I have to change the rear wheel to 3.25? what's the downside of using the full stock set up? would getting a wider tire offset this?

Offline ChopSticks

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Re: CBR 1000 front end swap
« Reply #30 on: February 05, 2016, 12:00:58 PM »
So I talk to the seller, going to try to get the front end tonight, I'm pretty sure it's still attached to the bike. Are there any special tools I would need to remove the front end from the frame?

Offline ChopSticks

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Re: CBR 1000 front end swap
« Reply #31 on: February 05, 2016, 12:49:30 PM »
Could I use a screwdriver/mallet to loosen the spanner bolt? Nothing near me carries a spanner wrench =/

I was planning to remove calipers/fender, then remove axle, remove wheel, then put the calipers/fender back on the forks. Remove the top triple tree and then slide the stem out under (after loosening the spanner bolt), and take the whole front end / fork as one piece?

kind of like this

http://thumbs3.ebaystatic.com/d/l225/pict/252072762336_1.jpg

or is this not even possible?

Offline ChopSticks

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Re: CBR 1000 front end swap
« Reply #32 on: February 05, 2016, 01:01:52 PM »
Great, yeah he's including the fender. not sure if that can be re purposed if I don't use the stock wheel, would I need to make a fork brace in that scenario?

Also just called up Honda, apparently the CBRs don't have a spanner lock nut so should be good