Anti Bottoming Kit - Yamaha

I would NOT recommend that kit. If you remember back to the '05 Vectors, that skid (the same one in the Apex RTX) used those very same "bottom stoppers". They were actually meant to mimic the so-called cross-over tube/spring on a Fast M-10 by progressively increasing the spring pre-load as the suspension compressed. From my experience and many others, the rollers created almost a slap-back effect which caused the seat to come up and kick you hard. This wasn't so bad with a low, soft Vector seat, but I can't even imagine getting nailed by that tall, firm Nytro seat. If you really want a set that bad, Paypal me $35 and I'll toss mine in an envelope addressed to you. They've been sitting in the top of my toolbox since three days after I bought my Vector.
 
Hmm. I think I might need to build something similar for my 'Cat skid. :D
 
anti bottom blocks

I agree with John the Fisherman.....I actually got thrown off the machine
twice last year trying these. Hard to valve the shocks for two different
spring rates basically
 
I think we just answered that... I wouldn't use them, they are a waste IMO. In fact, if you dig around on the Apex forum, you'll see a few people complaining about the rear skid on the older RTXs kicking them in the butt, this is from the "anti-bottoming" rollers. The cross country racers all remove these things too, because they kick back so hard. If you want to reduce bottoming, get your shocks and springs set up for your weight and riding style and learn to utilize the adjustments that are available to you on the skid.
 
There were 3 of us over on the Apex forum discussing these bumpers. The conclusion was that they may help cushion/stop bottoming, but at what price? The kickback is unreal in some situations. The decision was then made to try and set up the coupling to do essentially the same thing. The difference being that when using coupling, the front shock will be in play, and can assist in the rebound/recovery. The bumpers do not have that capability.

Mine have been on the shelf for a while too. FWIW
 
Yamaha didnt pull them from production after the prototypes and testing because they wanted the sled to bottom easily and thought we (the consumers) would be happy with bottoming. Obviously Yami decided to not go with them and likely because the seat kick back was worse than the bottoming issue. I think the shock valving is is not progressive enough and Yamaha's strong suit has never been shock valving IMO. The only shocks I have ever truley thought were valved correctly from he get go on a Yamaha were Ohlins......
 
unchained said:
Yamaha didnt pull them from production after the prototypes and testing because they wanted the sled to bottom easily and thought we (the consumers) would be happy with bottoming. Obviously Yami decided to not go with them and likely because the seat kick back was worse than the bottoming issue. I think the shock valving is is not progressive enough and Yamaha's strong suit has never been shock valving IMO. The only shocks I have ever truley thought were valved correctly from he get go on a Yamaha were Ohlins......
Click to expand...

Pure speculation.... unless you work for Yamaha you wouldnt have a clue!!
 
MrSled said:
unchained said:
Yamaha didnt pull them from production after the prototypes and testing because they wanted the sled to bottom easily and thought we (the consumers) would be happy with bottoming. Obviously Yami decided to not go with them and likely because the seat kick back was worse than the bottoming issue. I think the shock valving is is not progressive enough and Yamaha's strong suit has never been shock valving IMO. The only shocks I have ever truley thought were valved correctly from he get go on a Yamaha were Ohlins......
Click to expand...

Pure speculation.... unless you work for Yamaha you wouldnt have a clue!!
Click to expand...
Your right, I am guessing. Whatever the reason their not there?? cost savings, long-term durability??, there is a unanimous concessious on here that the rear spring/shock set-up is to soft so Im pretty sure this is why this topic from 2 months ago is still hanging around?
Besides these sites have very little hard evidence and facts about issues, most of what we discuss is speculation and trial and error.
 
This whole discussion is the oldest song in snowmobiling. The bottom line is, none of the manufacturers strong suits involve suspension setup, but if you look at what these companies are up against, it's no wonder. Take the Nytro, you have everyone from a 160 lb 5'-6" guy all the way up to a 6'-2" 260 lb galoot like me buying these things, how could you possibly set them up for everyone? The answer is, you can't. The problem is, and this is not an indictment on anyone, most people do not know how to set up a suspension or want to spend a few bucks to have their shocks re-valved. Until a good chunk of riders get educated on what these suspensions can do and what the values of valving are, this complaint is going to repeat it self over and over again. A lot of people think clickers are the answer to everyones prayers, but you are still making minute adjustments withing the range of the available valving. For instance, for 50% of the purchasers the 2002 Viper was absolutely unridable with the original shocks. I, on the other hand, didn't find it to be that bad. That was a situation where having ckickers on the rear shocks probably wouldn't have done any good at all. Thankfully, Yamaha offered a different shock-spring kit to remedy some of the problems.

My biggest complaint with Yamaha and Ski-Doo is that they continue to use KYB shocks and then only have a handful of dealers setup to work with them. Fox Shox arent perfect, but I would be willing to bet that most people could find someone within 100 miles of them that can re-valve and rebuild them without have to ship them all over the country.
 
john_the_fisherman said:
This whole discussion is the oldest song in snowmobiling. The bottom line is, none of the manufacturers strong suits involve suspension setup, but if you look at what these companies are up against, it's no wonder. Take the Nytro, you have everyone from a 160 lb 5'-6" guy all the way up to a 6'-2" 260 lb galoot like me buying these things, how could you possibly set them up for everyone? The answer is, you can't. The problem is, and this is not an indictment on anyone, most people do not know how to set up a suspension or want to spend a few bucks to have their shocks re-valved. Until a good chunk of riders get educated on what these suspensions can do and what the values of valving are, this complaint is going to repeat it self over and over again.
Click to expand...

This is true to me also, and to add..... not every 160 lb. guy/gal is going to trail ride the same way, and the same with the 260 lb galoot. (1) 260 lb. galoot (me) rides just as hard as the weekend warrior wannabees, and yet the next 260 lb galoot, just trail rides. So we just doubled, maybe even trippled the problem with guys who do off-trail.
 
It all in the set up... I have found the same soft settings ins tock form are not to book... read your manual and you will see. I am 250lbs with gear and I can beat the snot out of this sled with very little to no bottoming... at this point I dont know what to say anymore other then bring all the Nytros to my house I will set them the way they should have came.... and if you dont mind waiting you may get your sled back by next winter.
 
MrSled said:
It all in the set up... I have found the same soft settings ins tock form are not to book... read your manual and you will see. I am 250lbs with gear and I can beat the snot out of this sled with very little to no bottoming... at this point I dont know what to say anymore other then bring all the Nytros to my house I will set them the way they should have came.... and if you dont mind waiting you may get your sled back by next winter.
Click to expand...

MrSled, here's a better idea. Why don't you bring your sled over to Newfoundland. I'll give you the guided tour of Lewis Hills and area, and after a good days ride we'll pop out to the shed, have a beverage and you can set up my suspension for me.

Sounds like a win / win to me, and I won't have to wait to get my sled back. ;)!
 
LOL, Kins... I would love to but I wont have time until mid Feb to even leave... but is the air fair on you!!! ;)!
 
You must log in or register to reply here.

Similar threads

K
Anti-bottoming kit?
Replies
5
Views
2K
kizerboy
K
D
4th wheel and anti-bottoming kit Mod
Replies
10
Views
5K
rfabro
rfabro
bottlerocket
FX NYTRO® DESIGNER COMBINATION TANK BAG
2
Replies
22
Views
6K
upei93
upei93
mach9
Yamaha trunk bag
2
Replies
20
Views
6K
Grimm
Grimm
J
Anti-bottoming kit????
Replies
7
Views
2K
JONMIG
J


Back
Top