Author |
Message |
JSGAuto
Silver CB900F
Joined: Nov 25, 2004
Posts: 1433
Location: Succasunna, NJ
|
Posted:
Wed Nov 07, 2007 12:38 am |
|
Hi everyone,
After reading this frame flexing discussion it got me thinking (and researching). It seems that the rubber bushings in these motors can be replaced with something a bit harder, to increase the stiffness of the chassis.
I will probably turn out a set for myself, but would anyone else be intrested in a set if I produced a few extras?
Just throwing ideas out there. Seems like a good way to make a small improvement on our old bikes.
Jim |
|
|
|
|
fasterspider
Red CB1100F
Joined: Jan 24, 2004
Posts: 15809
Location: Studio City, Los Angeles, Ca. 91604
|
Posted:
Wed Nov 07, 2007 1:04 am |
|
JSGAuto wrote: |
Hi everyone,
After reading this frame flexing discussion it got me thinking (and researching). It seems that the rubber bushings in these motors can be replaced with something a bit harder, to increase the stiffness of the chassis.
I will probably turn out a set for myself, but would anyone else be intrested in a set if I produced a few extras?
Just throwing ideas out there. Seems like a good way to make a small improvement on our old bikes.
Jim |
I will take at least one set if the cost is reasonable because I was just thinking on how to get that done for my red bike and the "R"eplica which has solid mounts. |
|
|
|
|
JSGAuto
Silver CB900F
Joined: Nov 25, 2004
Posts: 1433
Location: Succasunna, NJ
|
Posted:
Wed Nov 07, 2007 1:48 am |
|
Of course the cost will be reasonable.
The more intrest, the more material I will buy, and the cheaper the cost. |
|
|
|
|
fasterspider
Red CB1100F
Joined: Jan 24, 2004
Posts: 15809
Location: Studio City, Los Angeles, Ca. 91604
|
Posted:
Wed Nov 07, 2007 1:50 am |
|
JSGAuto wrote: |
Of course the cost will be reasonable.
The more intrest, the more material I will buy, and the cheaper the cost. |
Then I will take two sets if it is gonna be like that my friend because I have two soft mount engines in need of help.
Thank you. |
|
|
|
|
burned
Hawk
Joined: Sep 26, 2007
Posts: 408
Location: littleton colorado
|
Posted:
Wed Nov 07, 2007 2:34 am |
|
|
|
|
CB1100Fun
Twinstar
Joined: Aug 25, 2007
Posts: 52
Location: Oakland, Maine
|
Posted:
Wed Nov 07, 2007 2:55 am |
|
I'll take a set. Thank you |
|
|
|
|
genesound
Red CB1100F
Joined: Feb 20, 2006
Posts: 11926
Location: Studio City, California
|
Posted:
Wed Nov 07, 2007 6:55 am |
|
|
|
|
powerroy
Black CB900F
Joined: Jul 04, 2004
Posts: 1696
Location: Arizona, Apache Junction
|
Posted:
Wed Nov 07, 2007 1:27 pm |
|
Depending on the cost, I'll take a set |
|
|
|
|
larryg
CB1100F
Joined: Feb 28, 2005
Posts: 3393
Location: western mass
|
Posted:
Wed Nov 07, 2007 1:39 pm |
|
|
|
|
NV900F
Silver CB750F
Joined: Aug 20, 2007
Posts: 539
Location: Henderson, NV
|
Posted:
Wed Nov 07, 2007 2:29 pm |
|
|
|
|
HondaFan
Twinstar
Joined: May 05, 2006
Posts: 187
Location: Reno, NV Gateway to Fabulous Lake Tahoe
|
Posted:
Wed Nov 07, 2007 3:16 pm |
|
|
|
|
CB900SS
Red CB1100F
Joined: Jun 08, 2005
Posts: 5476
Location: Mastic, NY
|
Posted:
Wed Nov 07, 2007 5:59 pm |
|
Sounds like you will save me some work. What exactly are we talking about here? Simply round aluminum stock to fit into where the rubber was in the motor? So 4 of them for the rear of the motor? I also was trying to think of a way to get rid of those stupid rubber spacers (you know the ones with the metal washers glued to each side), I was thinking just some washers for that job.
But the four rubbers in the rear of the motor seems like the most important to make solid. Everyone should measure these holes if they have motors on the ground, I would be curious if they are all close in size. I wouldn't want to have any slop in there. |
|
|
|
|
DennisTheMenace
Black CB750F
Joined: Dec 25, 2004
Posts: 958
Location: Corrales, NM (by Albuquerque)
|
Posted:
Wed Nov 07, 2007 6:33 pm |
|
The four motor holes are the same size - but unfortunately, I don't have the measurements handy.
Also, the lower frame rails have big openings for the rubber spacers for the front lower motor mounts too.
I had four aluminum plugs and two steel plugs made up to solid mount my motor and just used the links (for now) in the front. The steel plugs I welded into the frame tube holes and the aluminum plugs I just tapped into the engine cases. Use washers or spacers of the right thickness to take up the space between the mounts and the motor so you're not pinching the frame when you tighten the motor mount bolts down. |
|
|
|
|
JSGAuto
Silver CB900F
Joined: Nov 25, 2004
Posts: 1433
Location: Succasunna, NJ
|
Posted:
Wed Nov 07, 2007 11:07 pm |
|
Seems like there is one or two people intrested.
What I will do is make the back 4 mounts first, as they are the same. This will speed along the process. After we are all happy with this We will take a look at the front mounting.
I'll order some material tonight.
Please be patiant though. My lathe was made in 1947, and every operation is manualy operated. Its fun to use, but time consuming. Cost me about as much as a new made in China one, but if it lasted this long, she is good for me!
Thanks,
Jim |
|
|
|
|
mr01000101
Twinstar
Joined: Jan 22, 2006
Posts: 224
Location: San Diego, CA
|
Posted:
Wed Nov 07, 2007 11:51 pm |
|
Like Ray, I need to mount a rubber-mounted engine (900F) in a solid-mounted (750F) frame.
I'm not sure how the mount points differ on the frames between the mount styles, maybe they are the same?
If you make some batches of spacers that will work for my application, I will gladly pay for a set. |
|
|
|
|
WhiteCloud
Hawk
Joined: Aug 18, 2006
Posts: 272
Location: Alsip, Ill
|
Posted:
Thu Nov 08, 2007 12:28 am |
|
What is the advantage to solid mounting the motor, is it like mentioned to make the frame stiffer and why did'nt Honda do this on the bike in the first place? And is there a down side to doing this? |
|
|
|
|
JSGAuto
Silver CB900F
Joined: Nov 25, 2004
Posts: 1433
Location: Succasunna, NJ
|
Posted:
Thu Nov 08, 2007 12:48 am |
|
The advantage is the engine will act as a frame member, making it more rigid.
The down side is there will be increased vibration.
Honda made a bike that was smoother, giving up a bit of performance. |
|
|
|
|
woodyow
MB-5
Joined: Apr 18, 2005
Posts: 8
Location: Sydney, Australia
|
Posted:
Thu Nov 08, 2007 1:22 am |
|
I am currently rebuilding a 900, and have converted from the stock rubber mounts
to a rigid mount. I used alloy plugs in the engine parts, welded some steel into the
lower frame mounts (TIG welded). I have ditched the front swinging mounts and
have made alloy CNC machined brackets instead.
The right hand bracket is pretty easy to manufacture, the left was very time consuming
to machine up. These are currently away being anodized, and when they return, I will
submit some pictures.
Cheers,
Rob. |
|
|
|
|
stoutblock
Friend of the Board
Joined: Jun 22, 2003
Posts: 4638
Location: Seattle
|
Posted:
Thu Nov 08, 2007 3:19 am |
|
Pictures please!
I need some plugs to allow mounting a 1100 engine in a 750 frame. |
|
|
|
|
Blainethemono
CB1100F
Joined: Mar 03, 2004
Posts: 3278
Location: Seattle
|
Posted:
Thu Nov 08, 2007 2:17 pm |
|
Sorry Woodyow, but I have to ask... Are you the guy from Aussie land who posted a thread about a 14 year olds weld jobs on a "home made" race replica swing arm?? If so, did the "kid" do this welding too?
Just curious.... |
|
|
|
|
CB900SS
Red CB1100F
Joined: Jun 08, 2005
Posts: 5476
Location: Mastic, NY
|
Posted:
Thu Nov 08, 2007 9:50 pm |
|
DennisTheMenace wrote: |
Also, the lower frame rails have big openings for the rubber spacers for the front lower motor mounts too. |
Its been a while since I thought about this. Yes, the front in the frame needs steel to replace the rubber mount in the frame. Thanks Dennis. |
|
|
|
|
Blainethemono
CB1100F
Joined: Mar 03, 2004
Posts: 3278
Location: Seattle
|
Posted:
Sat Nov 10, 2007 12:32 am |
|
Quote: |
Its been a while since I thought about this. Yes, the front in the frame needs steel to replace the rubber mount in the frame. Thanks Dennis. |
You mean like this???
|
|
|
|
|
woodyow
MB-5
Joined: Apr 18, 2005
Posts: 8
Location: Sydney, Australia
|
Posted:
Sun Nov 11, 2007 4:00 am |
|
Blainethemono wrote: |
Sorry Woodyow, but I have to ask... Are you the guy from Aussie land who posted a thread about a 14 year olds weld jobs on a "home made" race replica swing arm?? If so, did the "kid" do this welding too?
Just curious.... |
ummm, no Blainethemono, I am Aussie, but nothing about 14 year olds welding.
Will have pictures in about a week of my front brackets.
Rob |
|
|
|
|
CB900SS
Red CB1100F
Joined: Jun 08, 2005
Posts: 5476
Location: Mastic, NY
|
Posted:
Mon Nov 12, 2007 6:05 pm |
|
Blainethemono wrote: |
Quote: |
Its been a while since I thought about this. Yes, the front in the frame needs steel to replace the rubber mount in the frame. Thanks Dennis. |
You mean like this??? |
Its hard to see in the picture. Dennis is talking about where the rubber inserts go into the frame, they go inside of the round holes at the bottom of both lower frame rails. I assume da beast has the rubbers replaced with steel, but I can't see from the picture. |
|
|
|
|
CB900SS
Red CB1100F
Joined: Jun 08, 2005
Posts: 5476
Location: Mastic, NY
|
Posted:
Mon Nov 12, 2007 6:06 pm |
|
woodyow wrote: |
I am currently rebuilding a 900, and have converted from the stock rubber mounts
to a rigid mount. I used alloy plugs in the engine parts, welded some steel into the
lower frame mounts (TIG welded). I have ditched the front swinging mounts and
have made alloy CNC machined brackets instead.
The right hand bracket is pretty easy to manufacture, the left was very time consuming
to machine up. These are currently away being anodized, and when they return, I will
submit some pictures.
Cheers,
Rob. |
Rob, please don't forget. I would love to see them! |
|
|
|
|
woodyow
MB-5
Joined: Apr 18, 2005
Posts: 8
Location: Sydney, Australia
|
Posted:
Fri Dec 07, 2007 11:35 pm |
|
OK guys, I have some pictures - not the best quality - but you should get the idea.
[img][/img]
[img][/img]
[img]
[/img]
[img]
[/img] |
|
|
|
|
DennisTheMenace
Black CB750F
Joined: Dec 25, 2004
Posts: 958
Location: Corrales, NM (by Albuquerque)
|
Posted:
Fri Dec 07, 2007 11:53 pm |
|
Thanks for posting the front mount photos -- the ideas I was coming up with weren't as good! |
|
|
|
|
Midnight
Silver CB900F
Joined: Sep 24, 2005
Posts: 1307
Location: Utrecht, The Netherlands
|
Posted:
Fri Dec 07, 2007 11:53 pm |
|
Nice job! |
|
|
|
|
toddk
CB1100F
Joined: Mar 25, 2004
Posts: 2286
Location: Saratoga Springs, New York
|
Posted:
Sat Dec 08, 2007 12:53 am |
|
I'll take a set please Jim.
Thanks,
Toddk |
|
|
|
|
stoutblock
Friend of the Board
Joined: Jun 22, 2003
Posts: 4638
Location: Seattle
|
Posted:
Sat Dec 08, 2007 10:31 pm |
|
Me too, maybe two sets if they are reasonable... |
|
|
|
|
|