Author Topic: DELRIN swingarm bushings (Read 25358 times)

Steve F · « **on:** April 01, 2009, 04:34:23 am »

Here are some pics of the DELRIN swingarm bushings I made and after 8000+ miles of use. The swingarm came off to get repainted, and the DELRIN busings were removed for cleaning and to sandblast the swingarm. They were still nice and snug on the shaft, no signs of wear and no cracks. Happy camper.

beta1042 · « **Reply #1 on:** April 02, 2009, 07:46:39 am »

Any more Delrin rod in stock?

snowfighter2 · « **Reply #2 on:** June 12, 2009, 05:57:15 am »

Hey Steve! Any chance you can mass produce those delrin bushings, and sell me a set? I'm sure that others would agree.

mfreimer11 · « **Reply #3 on:** June 14, 2009, 08:11:54 pm »

Quote from: snowfighter2 on June 12, 2009, 05:57:15 am

Hey Steve! Any chance you can mass produce those delrin bushings, and sell me a set? I'm sure that others would agree.

And a bump! I'd buy a pair or two.

Steve F · « **Reply #4 on:** June 19, 2009, 02:15:46 pm »

I wish I could make some for other folks, but that can't be....sorry

mystic_1 · « **Reply #5 on:** June 19, 2009, 02:46:56 pm »

Why is that, Steve?

BTW I noticed in the current J&P catalog that they now offer delrin swingarm bushings for big twin Harleys.

mystic_1

Steve F · « **Reply #6 on:** June 19, 2009, 03:34:17 pm »

Quote from: mystic_1 on June 19, 2009, 02:46:56 pm

Why is that, Steve?

BTW I noticed in the current J&P catalog that they now offer delrin swingarm bushings for big twin Harleys.

mystic_1

Wow, that's cool, I just thought that DELRIN would work because of its' toughness. I can't make something like that without fear of getting fired. The company is looking for ANY reason/excuse to let someone go.

mystic_1 · « **Reply #7 on:** June 19, 2009, 06:49:44 pm »

I understand completely.

I did a double-take when I noticed the bushings in the catalog, and thought of this thread.

Here's a link to the online catalog, bushings are on the lower right corner of page 540.

http://www.jpcycles.com/catalog/2009HarleyCatalog/?section=11+Frames

mystic_1

snowfighter2 · « **Reply #8 on:** June 19, 2009, 09:11:48 pm »

Yo Steve F,

I fully understand that you don't want to give the company any reason to cut you loose. I saw the ones for the Harleys. Maybe somebody will start making them for us old school guys. There's your million dollar idea Steve! you need to patent that thing!

motocyconomad · « **Reply #9 on:** August 05, 2009, 11:28:52 pm »

did you turn those on a lathe at work? that's terrible, I want some too. I wonder if I could do that with this waterjet I run at my work?hum...

tbpmusic · « **Reply #10 on:** August 06, 2009, 09:01:15 am »

Our friend Bob Franzke makes bronze swingarm bushings that should fit a lot of SOHC 4's.
He's at franzke@attglobal.net, or http://www.CBXperformance.com

Direct replacement for all CB/CL450 (5-speeds), CB/CL360, CBX, 350F/400F/500F/550F, and a number of SOHC 750's - undoubtedly other models also, those are just the ones I know for sure.
Replace parts # 52109-283-300, 52108-300-300, 52108-457-300, 52108-333-003, blah, blah.....
If you have questions about fitmet, just ask Bob directly, he's a great guy.

A lengthy discussion is at http://www.hondatwins.net/forum/viewtopic.php?f=29&t=320&st=0&sk=t&sd=a

Put them on and forget about them forever, they're virtually indestructible......

Roach Carver · « **Reply #11 on:** August 17, 2009, 08:25:22 am »

hondaman goes one step further and actually fits the axle to the bushing. I think the whole service is around a 100 bucks. seems like the best deal to me.

Terry in Australia · « **Reply #12 on:** October 15, 2009, 07:13:49 pm »

Hmmnnn, Delrin eh? I think I've got a length of that stuff sitting beside my lathe...........

754 · « **Reply #13 on:** October 16, 2009, 08:27:16 am »

Delrin, is very nice to machine..
Not my choice though, I would use 660 Bronze or similar..

mystic_1 · « **Reply #14 on:** October 16, 2009, 08:37:12 am »

Quote from: 754 on October 16, 2009, 08:27:16 am

Delrin, is very nice to machine..
Not my choice though, I would use 660 Bronze or similar..

Why, specifically? Just curious.

mystic_1

754 · « **Reply #15 on:** October 16, 2009, 08:46:24 am »

Bronze is tough, and as long as it is greased it will hold up under a lot of hard use, in this application..

I have done a few things in plastic for people where the "plastic suppliers" swore up & down, it would outlast the metal it was replacing.. only to not have that happen...

Delrin will probably work well, dont know for how long, but I wont try it..not if I got bronze on hand..

mystic_1 · « **Reply #16 on:** October 16, 2009, 08:49:44 am »

Yeah I guess the jury is still out on longevity.

Steve, let us know when you get to 30,000 miles on those

mystic_1

runutz698 · « **Reply #17 on:** October 19, 2009, 09:53:31 pm »

Quote from: tbpmusic on August 06, 2009, 09:01:15 am

Our friend Bob Franzke makes bronze swingarm bushings that should fit a lot of SOHC 4's.
He's at franzke@attglobal.net, or http://www.CBXperformance.com

Direct replacement for all CB/CL450 (5-speeds), CB/CL360, CBX, 350F/400F/500F/550F, and a number of SOHC 750's - undoubtedly other models also, those are just the ones I know for sure.
Replace parts # 52109-283-300, 52108-300-300, 52108-457-300, 52108-333-003, blah, blah.....
If you have questions about fitmet, just ask Bob directly, he's a great guy.

A lengthy discussion is at http://www.hondatwins.net/forum/viewtopic.php?f=29&t=320&st=0&sk=t&sd=a

Put them on and forget about them forever, they're virtually indestructible......

I have bronze bushes in my montesa, works really well. Just have to be careful what lube you use on the bronze to steel.

Pinhead · « **Reply #18 on:** October 19, 2009, 10:53:16 pm »

Are those bronze bushings "porous?" Brunswick uses "Oillite" bearings that are very porous and "soak up" oil. You don't want to use grease on them because it will clog the pores. Once the bushings are saturated with oil you never have to re-lube them.

tbpmusic · « **Reply #19 on:** October 20, 2009, 05:46:26 pm »

This from Bob Franzke, regarding lubricant for his bronze bushings.....

"For many uses, I use a blue wheel bearing grease from StaLube...but I'm sure
there're many other types of lubrication that will work just fine."

Soos · « **Reply #20 on:** October 20, 2009, 06:43:52 pm »

I made a set of bushings when fitting a different swingarm on my '79 cb650.
Mainly to adapt to the smaller '79 swingarm bolt.
660? not too sure anymore.
It was a year or so ago.
Lotsa parts, lotsa materials....

"oillite" is simply a trademark name for a sintered metal bronze material.
The pores do help hold oil very well though.

l8r

runutz698 · « **Reply #21 on:** October 21, 2009, 06:02:42 pm »

Bronze bushes are good. Some oils have detergents in them that will actually break the bronze down. Montesas have brass bushes in the gear box and require special lube as normal lube GL4 oils destroy's the bronze/Brass. :-)

754 · « **Reply #22 on:** October 21, 2009, 08:01:32 pm »

Oilite, sintered bronze bushing, porous structure, allows it too hold oil.. medium strength.
Often used in applications that are never lubed or difficult to lube.

Bronze, usually machined from barstock, has higher strength, but requires lubrication.

....................................................................................
Sintered is usually powdered netal compressed under high pressure into a mold, and maybe baked. Lower cost due to little or no machining, no waste.

..................................................................................

My concern with swingarms is if you do constant burnouts. (I do a lot), that the softer materials, will pound out sooner than bronze. For everyday riding, all three will work fine (3 being plastic, oilite, bronze..)

EBCB · « **Reply #23 on:** October 22, 2009, 03:35:52 pm »

If someone will supply me with the dimensions, I'll make a few sets out of delrin for those that want them. Can also make it from brass as well.

Eric

Steve F · « **Reply #24 on:** October 22, 2009, 06:27:44 pm »

When I was making the DELRIN bushings, I found it necessary to "fine tune" the bore after they were pressed into the swingarm to properly fit the pivot rod so they weren't too tight. I used an expanding reamer to get the final fit. I'm sure that with a little experimenting, you could get the final bore figured out by final reaming, removing the bushing and measuring the difference.

News:

Author Topic: DELRIN swingarm bushings (Read 25358 times)

runutz698

runutz698