Topic: Goldwing front end on a CB750 K2

[EMONTANA]

Can anyone tell me the advantage of swaping a goldwing front end on my cb750 k2? i.e. dual disks, ride hieght, shock performance?

[Geeto67]

dual disc with a spoked rim seems to be the main advantage. The goldwing also uses 37mm fork tubes which are slightly stiffer. The spring rates don't really feel any different despite the goldwing being a heavier bike (not a perf bike but a touring bike so the suspension was a little soft). As far as height is concerned the gold wing front end is only a little taller than the stock cb750 front end, and you can compensate by sliding the fork tubes up in the trees. IF you do the swap the best front end to get is the 1975-77, and you must sue the goldwing bottom temkin stem bearing and cb750 top temkin stem bearing if you want temkin bearings. Also the risers are taller on a gold wing so you may want to re think your handlebar bend.

one thing I forgot to add is that the goldwing wheel rim is aluminum but if using a gold wing rim you must use the goldwing speedodrive. IF you wanan use your stock honda rim you can but it is steel, and you must use the goldwing speedo drive, spacers, and gold wing discs as the spacing is different for the brakes.

[Porscheguy912]

I am about to preform this operation. I Hate these Comstar rims!
Can i use my calipers from my 750F2 on the Goldwing forks?

Any additional tips would be great!

thx!

[mrblasty]

I believe you can use the f2 calipers.
Good Luck

[Porscheguy912]

I believe you can use the f2 calipers.
Good Luck

Cool, thanks!

BTW, you've got the best tag line ever. Bunny hop. LMAO 

[Geeto67]

If you look for a Goldwing GL1000 from 1975 to 1976, these have spoked rims, dual disc, and a speedo drive that works with the dual disc. These are the front ends you want to swap with the cb750 SOHC bikes. Aside from the wheel there are no real interchangeable parts so you need everything from the top clamp to the calipers. However it is a bolt on at the neck. You must use the GL1000 calipers, not the cb750 when using the GL1000 forks and discs.

If you want to run a 77-78 GL1000 front end you are back to being stuck with a comstar. You might be able to run the f2 calipers on this front end but I am not sure.

[eurban]

one thing I forgot to add is that the goldwing wheel rim is aluminum but if using a gold wing rim you must use the goldwing speedodrive. IF you wanan use your stock honda rim you can but it is steel, and you must use the goldwing speedo drive, spacers, and gold wing discs as the spacing is different for the brakes.

Just to clarify here, the Goldwing (gl1000) uses an aluminum rim that is exactly the same in size and spoke drilling as the stock steel 750 front rim.  As best as I know, the hub itself is identical as well.  The forks are spaced wider for the GL so the axle is longer, the spacers are different as is the speedo drive.  Rotors are specifc to the GL as well. Bolts for mounting the dual rotors are longer.  Best bet is to get an entire GL1000 front end.  As Geeto mentions, you could use a stock 750 front wheel with the rest of the GL parts to mount it up. . . . .I have never compared side to side the 77/78f2/f3 calipers and carriers with the 75-76 GL ones but they certainly appear similar.  The F2/f3 rotors will not bolt up to the spoked wheel hubs because they are a 5 bolt rather than a six bolt pattern.   

[Porscheguy912]

If you want to run a 77-78 GL1000 front end you are back to being stuck with a comstar.

Were there different models of the Goldwing that had spokes that year?
I have a guy that has a 77' that has spokes, and he sent me pictures.

I'm guessing that using a rear wheel from a goldwing is not an option because of the shaft drive. My goal here is to get rid of the comstars in favor of spokes. Which 750 year can i swap onto my rear? Also, how about converting to drum brakes from dissc? how difficult is that?

Thanks!

[Porscheguy912]

Actually, i really dont care about the dual front brakes. I really just want the easiest way to to get spokes on this thing and the comstars off. Would it be a direct bolt on exchange to swap front fork, wheel, and rear wheel from a CB750K8 on to my CB750F2 ? and then worry about the drum conversion for the rear?

Thx

[Warthog1959]

I am about to undergo this operation GL1000 front end on to an F2 for the same reasons. I am curious to know how you faired.

Were you able to use F2 calipers on the 6 bolt discs that come with the 75-77GL

As far as I can see from the manual the 75-77 discs with spokes are a different dimension to the 5 bolt comstar wheels. I know you can use f2 calipers on 78 Goldwings definitely. But I am talking about a 75 Goldwing. I notice that Old Bike Barn sells a calliper refurb kit specifically for 75-77 calipers and another for 78 through to the 1100 Gl's. This also tells me that the calipers must be different

By the way I have purchased a K swing arm and K rear wheel so I will have rear hub brakes. I am happy with this as they managed with hubs for years on old british bikes. Also they look more old school.

[fishhead]

The 75-77 GL calipers are different from the 78-79 GL calipers. The early calipers have a wider spacing on the fork legs than the later calipers/forks have.
 Links

http://forums.sohc4.net/index.php?topic=46084.msg484557#msg484557

http://forums.sohc4.net/index.php?topic=46362.msg486489#msg486489

[wannabridin]

listen to fish, he's done TONS of work with GL front ends and all other matter of front ends on different bikes.  he's helped me through all my dilemmas, now i just need to put his word to work!  that and find/modify the brake hub bolts so they'll clear the rotor...

[Old Scrambler]

Regarding the rear wheel.........I plan to use one from the 750A but I may have some chain alignment issues.

Benefits......besides the brakes and bearings........the aluminum rims greatly reduce unsprung weight and should make for better handling.  By sliding the GL forks up in the tree about 1.25 inches and using the Automatic 17-inch rear, the overall height will be slightly lower.

For street use, I was thinking of staying with the GL top tree with the higher handlebar mounts and using flat bars.

[754]

Dennis, use your old sproket carrier and everything will be good.

 I have a set of early 6 bolt GL rotors here for sale, whole wheel actually but rim is rough... and its in Canada eh!

[eastyork1977]

Regarding the rear wheel,

Has anyone put a GL1000 rear spoke on a 1977 CB750F? I know the disc on the opposite side, just wondering if anyone has done this.

Would love to get a good spoked wheel on the back and CB750F spoked wheels are VERY hard to come by.

[seanbarney41]

Regarding the rear wheel,

Has anyone put a GL1000 rear spoke on a 1977 CB750F? I know the disc on the opposite side, just wondering if anyone has done this.

Would love to get a good spoked wheel on the back and CB750F spoked wheels are VERY hard to come by.

of course you realize the GL rear hub is made for shaft drive right?...but there is no reason not to lace the nice GL aluminum rim to your cb750 hub, except that it's 17"...

[eastyork1977]

Spare me the lesson, why would I put a drive shaft wheel on a cb750F with a chain?
C'mon man.

[seanbarney41]

Spare me the lesson, why would I put a drive shaft wheel on a cb750F with a chain?
C'mon man.

sorry bro, you asked a question, I must have misunderstood exactly what you where asking.  I will be more careful about giving out lessons from now on.

[SOHC4 Cafe Racer Fan]

Sorry, but I would have answered the same way if sean had not already done so.  Believe me, these types of questions are not rare.  No offense to eastyork.