TRX250R.ORG
Workshop => Suspension and Chassis => Topic started by: rablack21 on February 21, 2017, 11:50:48 AM
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I am in the process of making a few rear shock linkage greaseable bolts as mine is worn out and they don't sell them anymore. And most of the used ones these days are looking rough. I'm just checking to see if there is a need to produce more of them. They would basically be replicas of the factory bolt.
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Poll added
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What is the bolt size diameter and length.
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The factory bolt is a unique shouldered style M12x110 greaseable bolt. Mine will be a factory replacement of that.
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The factory bolt is a unique shouldered style M12x110 greaseable bolt. Mine will be a factory replacement of that.
Not hard to make a bolt grease able
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I found a bolt that is the same diameter and length .I dont think it has the grease fitting.Im thinking about ordering it .Its a shock bolt from another source.
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chrome plated or titanium so it will last extra long?
John
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I found a bolt that is the same diameter and length .I dont think it has the grease fitting.Im thinking about ordering it .Its a shock bolt from another source.
As I mentioned previously, it is NOT a regular run of the mill M12 bolt. Please pay close attention. Although it has threads of a m12 bolt, it enlarges up to 12.9-13mm in the middle section of the bolt where the bushings and the shock ride. If you use a regular size m12 bolt, you will have far too much slop in there. Will it work? Yes. But you will have a lot more slop in your linkage and it will wear out prematurely. If it were just that easy, I would have just gone down to the hardware store at bought one.
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My intention would be zinc plating. The one I am making for myself will be zinced.
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The bolt I checked on isnt from the hardware store.From what I have read researching the atc 250r 84-85 has a 12x110 bolt.
As I mentioned previously, it is NOT a regular run of the mill M12 bolt. Please pay close attention. Although it has threads of a m12 bolt, it enlarges up to 12.9-13mm in the middle section of the bolt where the bushings and the shock ride. If you use a regular size m12 bolt, you will have far too much slop in there. Will it work? Yes. But you will have a lot more slop in your linkage and it will wear out prematurely. If it were just that easy, I would have just gone down to the hardware store at bought one.
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The bolt I checked on isnt from the hardware store.From what I have read researching the atc 250r 84-85 has a 12x110 bolt.
Mind if I ask the website?
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Partzilla for bolt size.I read on one of the trike sites that the atc bolt was smaller diameter than trx.I may be interested in 2 of your bolts.I need to rebuild my suspension link and I can only find the rebuild kit for the trx.
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any thing that you make that will be a service to the bike would sell. great idea. not all people have the equipment or the knowledge to make a bolt greaseable
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Not quite your run of the mill drilled bolt with a grease zerk. The only part that is 12mm is the threaded portion, the rest is 13.9mm to fit tightly with the bushings as mentioned earlier. Below shows the bolts, ATC on the left and TRX on the right with the ATC being 1mm smaller nominal diameter where the bushings ride. Anytime someone takes the time to reverse engineer and produce parts that are NLA from Honda is a great thing, good work!
(http://i97.photobucket.com/albums/l209/mx91a/Mobile%20Uploads/IMG_20160730_144909419_zpslokfqv70.jpg)
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Just an update. I have several bolts in process. I made 2 atc size bolts and 3 trx size bolts. They should be finished being machined this weekend. I am having a couple of them further heat treated, quenched, and tempered though I am undecided if they really need it. I will then take them to get zinc plated. If all goes well, I should have some finished one to show by the end of next week.
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Did you get these finished up?
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Sorry for the delay. My machinist has a death in the family and got the flu. It delayed my parts for a bit.
So far:
Status:
2 atc bolts are complete. They are made from S7 tool steel. These were basically set up and trial pieces. I will probably give these away to someone.
1 trx bolt: machining complete, heated and quenched to spec.
All bolts are awaiting zinc plating. I got a company lined up for the zinc plating. I will be taking the bolts to them in the next day or so. I will take a pic or 2 tonight to show the progress. So far, they are shaping up very well. The hex head fits the socket very nicely. Also, a good tight clearance to the linkage bushings.
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Here are some pics.
Pic1
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pic 2
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pic 3
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pic 4
OEM bolt on the left. New replacement bolt on the right.
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UPDATE!
With all the chaos of my new son, I got behind on there. Finally got the bolts to the zinc plater. Here are 3 finished shock linkage greaseable bolts. The smaller 2 are for an ATC, the larger diameter one of for a TRX.
Anybody still interested or need any of these? Will make more if there is a need.
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can you do all 3 linkage bolts? id be down for sets. im assuming these are no longer available
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The one I made is discontinued. All 3 may be discontinued. I have been asked to make the whole 3 set by several others. So I'm going to look into it. I'll update back.
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@rablack21
Ryan, thoughts on getting the bolts made?
Thanks
Joe
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Just looked at Ryan's profile & he hasn't been on the forum since October 2019 so unfortunately this might be a long shot unless someone has his phone number to contact him.
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Did anyone ever get in touch with Ryan ?
I just sent him an e-mail so we'll see if he replies.....I sure hope he's OK
I guess this didn't get finalized and offered to the 250R Brotherhood ?
:(
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I reached out to Ryan.....he's alive and well :D
This was his response:
Hey John,
I only made a few for myself. I never got further than that. Seemed like not very much interest there at the time. I still have the drawing, but I don't own a machine shop or anything. So I would have to source them to a shop in order to make more. Plus, they require heat treating and zinc plating. So it's not really something that is worth making only a couple for.
Maybe I can suggest this to Gil Durbin and see what he thinks
:)
John
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Was this ever completed?
If so, I would like four of these for my Trx-builds.
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Was this ever completed?
If so, I would like four of these for my Trx-builds.
Nope
Joe