Another Hair brain 200MX idea... (Please help me stop!)

[oscarmayer]

barrnett, I have to change because we are using a custom modded 350X swinger to fit the CR125 motor like the stocker and the factory bearings are just no longer an option.
hope this makes sense. the middle of the swinger will be cut out and the motor will bolt through just like on a dirt bike.

[barnett468]

.
Thanks for the reply, sure it makes sense, and I can certainly see how that can preclude to use of stock bearings, but what I don’ see is how it could prohibit the use of metal or a better non metal bearing than base Delrin, that’s all I was wondering . . Irregardless, you can obviously still switch over to something else later if you want, and what you are using certainly will work . . I just like to Ferrari type quality stiff even if it is a bicycle for our kids, lol . . My main point was simply to show you a few different options you might not have been aware of since I have worked with most all the materials I mentioned . . I added NYLON HS to my list for Ol Deuce yesterday so he could compare them all . . There is really a zillion different blends of material including metal reinforced nylon, and the variety is overwhelming for me to say the least, so I stick to the more common ones to keep it simple but I like to check out new things nonetheless just for fun.

There is even a new non metal material by Dupont called Vespel that is a whopping $4,500.00 a rod . . Some mfg’s use it for bearings and thrust washers in automatic transmissions and at that price I simply don’t see why.

http://www.dupont.com/products-and-s.../vespel-s.html


I also saw this post yesterday from the guy that is building your Baja bike, so since it sounds like he doesn’t know a lot about this stuff, the info I posted might be helpful to him in some way and he might find some use for one of the products I listed on your Baja bike or another project.

I use Delrin, but I always have my eye open for different things, I have a different application where that would work perfect. Would you mind giving me the name or link where it can be purchased. Thank You Milner

One other product I didn’t mention which is really cool and very durable and not “flexy” is basic Carbon rod with Graphite . . Some paces call Carbon rod that has been “Graphatized”, Graphite rod, however, it is really Carbon rod with Graphite and it is not extremely expensive like the Ketron rod I mentioned in my previous post . . Two big mfg’s of it that sell small quantities are listed below . . You can call them for info . . Just tell them your app and they can suggest something . . There are 4 main mfg processes for this type of rod, and the one I would avoid is called “extrusion” . . This is because it is strong in one direction only, and a rod that has multidirectional strength would be better, but of course it costs more . . You would not want to use a pure Graphite rod for anything other than a pencil.

http://www.beckergraphite.com/

https://www.graphitestore.com/stores.asp/cat_id/22


.....TYPE ……... Compressive strength …… Dynamic CF …….Hardness …… Tensile …. Wear …….. ME

SAE 954 BRONZE …… 22,000 psi* …………….. 0.37* …. B17/RB83/R156 .. 70,000 ….. N/A .. 14,000,000*
CARBON GRAPHITE*. 50,000 psi ……………… Low ………………… N/A ……… 11,000 ….. Low …. 4,003,000
KETRON CM CA30 ….. 29,000 psi ……………….. 0.20 …………. D93/M102 ….. 9,000 ….. 150 ….. 1,250,000
NYLUBE MO .………….. 14,500 psi .……………... 0.12 …………. D85 ……………. 12,300 ……. 32? ..…. 508,000
DELRIN AF [BLEND] .. 16,000 psi ……………….. 0.05 …………. M85/R115 ……. 8,000 ……. 57 …….. 485,000
DELRIN [POM-H] ……. 16,000 psi ……………….. 0.25 ………….. D86/R122 …. 11,000 ….. 200 …….. 450,000
NYLON HS ……………... 14,000 psi ………………. 0.39 ……………..D84 …………… 11,600 …. N/A …….. 478,600
ACETAL [POM-C] …… 11,000 psi ……………….. 0.21 ……………. NA/R86 ………. 8,800 …. 200 …….. 400,000
CARBON GRAPHITE . 50,000 psi ……………… Low ………………… N/A …………. 11,000 ….. Low …. 4,003,000


AVERAGE COSTS FOR 1 1/4” DIAMETER BAR/ROD . . Approximately 6 bearings per ft.

SAE 954 ……………………………… $45.00 per 12” …... 6 bearings ...... $9.00 per bearing.
CARBON GRAPHITE* …………..$30.00 PER 12” …… 6 bearings ……… $5.00 per bearing.
KETRON CM CA30 PEEK ……. $414.00 per 30” …. 17 bearings .... $24.15 per bearing.
NYLUBE MO ………………………. $130.00 per 96” …. 55 bearings ...... $2.36 per bearing.
DELRIN AF [BLEND] ……………. $50.00 per 12” ……. 6 bearings ...... $8.33 per bearing.
DELRIN [POM-H] ………………… $10.00 per 12” ……. 6 bearings ...... $1.66 per bearing.
NYLON HS …………………………… $25.00 per 12” ….. 6 bearings ……… $4.46 per bearing.
ACETAL [POM-C] …………………. $9.00 per 12” ……. 6 bearings ...... $1.50 per bearing.

*Price varies greatly depending on quality . . The price above would be for a slightly lower quality then the one posted in the specification category.

[barnett468]

.
Just for some perspective for the specification chart, a million pounds lbs is roughly the equivalent of twenty, 1970 Cadillac Coupe De Villes including driver and a full tank of gas, and the ME numbers are pounds per square inch, lol.

[Ol Deuce]

I'm just happy that I found a good power plant for a 2 stroke build. I've been wanting a 250r since I was a kid. But to build something from the frame up that rare with a motor that is no longer being produced, I'll take that in a heartbeat. Just for the experience of the whole thing. I'm so ready to tackle this one. Just gotta clear up some space in my oven of a shop.

I built mine

[onformula1]

^ I always loved that trike, runs great in the video too!

These two guys are going water pumper, not nostalgic, but they will be fun.

[onformula1]

Oscar Mayer, chop up that sucker and give me the Delrin bushing specs, choppy, choppy!

[Jmoozy27]

I built mine

Ol deuce, if I can make mine look half that cool then I'll be sleeping with a grin at night. Elsinore power looks so sweet!!!

[oscarmayer]

Oscar Mayer, chop up that sucker and give me the Delrin bushing specs, choppy, choppy!

will do it this weekend sir!

[oscarmayer]

ol Duce, one hell of ya trike ya got there bud! looks amazing!!!!!

[bkm]

Oscar Mayer, chop up that sucker and give me the Delrin bushing specs, choppy, choppy! [emoji38]

Delrin doesn't work.

[onformula1]

Delrin doesn't work.

I have heard that many, many, many times. I have not heard that from anyone the has them, or has friends that have them.

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[bkm]

I have heard that many, many, many times. I have not heard that from anyone the has them, or has friends that have them.

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Well you better axe somebody then.

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[onformula1]

Well you better axe somebody then.

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That's ok, I thend to just stick with facts, less migraines that way.



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[bkm]

That's ok, I thend to just stick with facts, less migraines that way.



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Break out the Excederine then, because the "Facts" will be here shortly giving you the best Google copy and paste he can find.

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[onformula1]

I have researched and tested many different materials, they all had more issues, if Delrin works for me and is raved about by people who own gigantic UTV 2 seat buggies with extended arms, 24" plus of suspension travel and huge air, I am good.

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