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RM6 new to me - How's my build?

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RM6 new to me - How's my build?

Old 04-24-05, 03:41 PM
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Eros
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RM6 new to me - How's my build?

Hi everyone,

I would like a little feedback on the new bike I just finished building.

How long do you think that fork will last (I'm about 11.5 stone or 160lbs)? Is it too short? Do you think losing a little over a degree of rake will affect things much?

I was using whatever I could from my XC bike to save $$. A longer, more DH appropriate fork will be first on the upgrade list.

Your thoughts would be appreciated.

Cheers
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Old 04-24-05, 04:29 PM
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It looks nice.You need a new fork,those psylos are pure crap.
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Old 04-24-05, 04:30 PM
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Theyre probably going to outlast the frame, have fun with it while you can.
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Old 04-24-05, 05:44 PM
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Come on now, out with it. I'm serious. Tell me what you really think. I don't have much experience yet and would like to hear what people think.

So, you think the frame will let go? Where is most likely?

Seriously, let fly guys and gals.

Cheers

edit - FWIW I've heard more good than bad about the psylo, but on this forum that's slipping.
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Old 04-25-05, 10:11 AM
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I've got 5 years and 12,000+ km on one of those frames. All the guys who broke the linkage were either hackz or going way to big for a bike of this type.

If you use the bike for it's intended purpose, trail riding and light DH, it will be fine.

For the record, I cracked the crown on the z1 that came stock (stress fracture) and fitted a 03 superT. The frame geo works pretty well with the bigger fork.

So no big hucks to flat, no cased gap jumps, no hack riding, no frame failures. Of course, if you bought it used, you are at the mercy of the previous owners' antics and possible hack repair jobs. Maybe on that topic, why is the swingarm yellow?
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Old 04-25-05, 04:00 PM
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Thanks for the positive spin. I'm not too worried about it though since I got the frame super-cheap. And yes it had been thoroughly used and abused. Hence me having to find another swingarm.

Maybe on that topic, why is the swingarm yellow?
Good question. It sort of matches the yellow graphics though. It might even be off an RM7. I don't know them that well. I got it independant from the triangle from a dude that said he used to race them. It could have been pink for all I care. Function over form for me.

Are there pivot solutions out there that aren't OEM replacements? My rear end is sloppy as all get out. I know there's needle bearings out there somewhere that would work, I just haven't found them yet.

Cheers
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Old 04-25-05, 04:53 PM
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Originally Posted by hapypinkbubbles
It looks nice.You need a new fork,those psylos are pure crap.
Psylo's aren't crap...KonaRider rides one and he rides the hardest here.
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Old 04-25-05, 04:58 PM
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Thanks. That's damn good to hear.
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Old 04-25-05, 05:12 PM
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Originally Posted by swifferman
Psylo's aren't crap...KonaRider rides one and he rides the hardest here.
How do you know? Have you ridden with everyone here? Have you ridden with Kona? You act like someone insulted your best friend. As for the bike I dig that yellow swing arm
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Old 04-25-05, 05:15 PM
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No, those are my legs. LOL
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Old 04-25-05, 05:19 PM
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Originally Posted by Eros
No, those are my legs. LOL
I feel your pain.
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Old 04-25-05, 06:32 PM
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That frame should last for a while IF you got it in good condition. What is the rest of the bike like? Because if someone sold you a bike with loose/trashed bearings, what do you think are the chabces they were tight and functioning when he wasn't trying to sell it? If it is in good condition however, it will be fine. The fork isn't too bad, sure they aren't the best, all they have against them is a little bit of flex, they have reasonable internals. Also if you are worried about your bike cracking or going wrong, it is most likely going to form cracks in the linkage plates or blow a shock. But as long as you don't be a hack it will be good, you actually could go reasonably big on that bike as long as it has a landing zone.

Nice bike, have fun and ride it like you stole it.
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Old 04-26-05, 03:21 PM
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Thanks Hopper.

I'm not really worried about longevity since the bike has seen it's fair share of abuse. I got just the triangle for a handshake and found a swingarm for a franklin.

When I got it all of the bushings had been shimmed with popcans. I manufactured my own replacements out of nylon, but with limited equipment I wasn't able to get the tolerances down to an acceptable level. My goal is to find needle bearings for all of the pivots. I would love to hear what other RM owners have done for unconventional pivot solutions.

I will of course be as smooth as possible, but with my limited experience some hack moves are going to be inevitable.

Oh, and I've got rear derailleur issues too. I can't get to my two biggest cogs and the body keeps smacking into the swingarm. I've got some learning to do I guess.

Cheers

Last edited by Eros; 04-26-05 at 10:55 PM. Reason: spelling correction
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Old 04-26-05, 05:00 PM
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Originally Posted by mtnbiker66
How do you know? Have you ridden with everyone here? Have you ridden with Kona? You act like someone insulted your best friend. As for the bike I dig that yellow swing arm
What the...how am I acting like someone insulted my best friend? Doesn't seem to be any hostility at all in my post. I just commented on the fork and the way I substantiate my claims is by stating that a sponsored rider rides one.
And if you believe at least partially in Kona's skill he's going to be one of the better riders on the board. It was a generalization yes, but noone truly speaks in black and white.

I searched all day for my bike lock but couldn't find it.-Noone really searches all day or looks forever.
Thanks
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Old 04-26-05, 06:17 PM
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My kids sponsored and just becuse he rides something it's good? I've had a little experience with a psylo and it's an ok middle of the road fork. If your gonna use someone to back up your claim it's better if it's someone you know.your buddy has posted some stuff that I know for a fact is pure BS.
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Old 04-27-05, 12:21 PM
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I cant tell from the picture, but if you donít have a bolt-on rear axel it would be a good idea. It removed the lateral flex from the swingarm quite noticeably and was a very low-budget improvement

I had a bunch of ambitious plans to get rid of the play in the first bit of travel, but haven't gotten around to it yet. Once I am sitting on the bike I dont notice it to tell you the truth.

The problem is that over time the steel bolts move a little and ovalize the holes in the softer aluminum plates they are in, which increases the movement in turn, and the problem gets worse. So you end up with a round bolt in an ovalized hole over time. Maybe you could drill the holes to the next bigger size and replace the bolts. Right now the bolt-holes in my linkage have gone from a loose M8 to a tight M9 bolt size, a bolt size that apparently nobody makes.
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Old 04-27-05, 03:30 PM
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Hmm, so you're saying your outter mounting plates have been wallowed out? My problem is with the bushings. I detect no movement between the plates and bolts. I went so far as to source bolts with more smooth shaft before the threads start so that the inside of the bushing is not riding on threads. I had to cut them, but I felt it was worth it.

All I really need are needle bearings with the correct outter dia. and cage width, then I can machine an inner bushing to fill the gap between inner race and bolt. My first tack was to try to find a bearing with both inner and outter races of the correct size, but that seems to be an exercise in futility. One less piece in there would allow less movement since it would eliminate one tiny little gap.

Usually SAE bolts will come out between metric sizes. Maybe 11/32?
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Old 04-27-05, 09:20 PM
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Yeah, tried that too, no dice, the M8 and the 11/32 had the same size shaft with different threads cut at the end from all the hardware sources I could find. I have movement pretty much everwhere... when I lift the back of the bike up I can a bit of play in pretty much everywhere a bolt goes through a plate. Such is the reality of a very high-mileage freeride bike.

I have cartriage bearings that are the right size to fit in the dog-leg, and I was considering using shims elsewhere, but my attention span for these operations is limited by the age of the bike and the fact that I never notice the play while riding. I guess you can get used to anything.

I have *heard* that the new RMX swingarms can be used on an RM6/7, and the bolt holes in the new tubular RMX front ends look visually the same as on the old bikes, although the linkage plate assembly is MUCH wider... but this is all hearsay, they may have changed it. I was considering contacting Rocky about this, but I may not bother and just run the frame until it finally expires.... which may be another five long years the way it's going.
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Old 04-27-05, 09:52 PM
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I haven't ridden mine enough to tell yet, but I figured the play would really be noticeable over choppy stuff. I'm too much of a perfectionist. I need to just go ride it and see how bad it really is.

Kudos to you for keeping the old stuff going.
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Old 04-27-05, 10:10 PM
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Originally Posted by swifferman
Psylo's aren't crap...KonaRider rides one and he rides the hardest here.
Funny thing is until I picked up my vanilla the kona was idle for 4 days due to a cracked stanction on the psylo.
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Old 04-28-05, 02:19 AM
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How much difference would a 20mm axle make in the rigidity dept. of this fork? Somebody mentioned flexy.
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Old 04-28-05, 08:12 AM
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20mm axles only reduce the side-to-side movements of the fork, and they do a pretty good job. The problem I found with the older 30mm-inner-leg single-crowns was the deflection, i.e. the amount that the fork flexes backwards when you are rolling over stuff (and to a lesser extent the amount it splays forward on landings). The 20mm axel on my z1 did nothing to address this issue. It can only be addressed by a double-crown fork or a bigger single crown.
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Old 04-28-05, 02:21 PM
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That makes plenty of sense.
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Old 04-28-05, 03:03 PM
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Originally Posted by mtnbiker66
My kids sponsored and just becuse he rides something it's good? I've had a little experience with a psylo and it's an ok middle of the road fork. If your gonna use someone to back up your claim it's better if it's someone you know.your buddy has posted some stuff that I know for a fact is pure BS.
Seems like you have issues with something other then the fork? KonaRider is the only sponsored rider I know of on this board, there are lots, but I don't know they're sponsored or I just plain don't know them. That is how I justify it. E.g. Tiger Woods uses this putter, it's probably good.

Or, Michael Jordan wears this shoe, it's probably good.

Now, KonaRider probably isn't the Michael Jordan of mountain biking, but he's still a cut above everyone who doesn't have the talent to be sponsored so I use him to justify the fork, because I don't know anyone else of that calibre.
That's all.
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Old 04-28-05, 06:53 PM
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Originally Posted by swifferman
Seems like you have issues with something other then the fork? KonaRider is the only sponsored rider I know of on this board, there are lots, but I don't know they're sponsored or I just plain don't know them. That is how I justify it. E.g. Tiger Woods uses this putter, it's probably good.

Or, Michael Jordan wears this shoe, it's probably good.

Now, KonaRider probably isn't the Michael Jordan of mountain biking, but he's still a cut above everyone who doesn't have the talent to be sponsored so I use him to justify the fork, because I don't know anyone else of that calibre.
That's all.
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