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What's the final verdict on the best tunnel extension?

HAMMER said:
There are people in this very post that like the kits, Yamaha dealers like the kits, and that's pretty good indication they surely do work just fine.
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There are also people "in this very post" that seem to have issues with him. So is that a pretty "good indication" that his products are no good? Your arguement works both ways.


LB,
I don't agree with the three things that cause ratcheting. Many stock sleds ratchet. Mine did. I do think there is a partial design flaw with the skid.
 

I can see that I'm going to have to prove this whole thing to you mathematically, I hope you're up to a little trig. I will be preparing a diagram and full explanation shortly.

Now as for my custom skid... you didn't look very hard. Here's a couple of pics of the new one: http://www.rx1.info/viewtopic.php?t=6968

There is a 14.5" travel when the straps are out far enough to experience stock approach angle. When I pull in the straps to obtain the lower approach angle, I get stock travel.

Here's a pic of the "kit" before I fixed it: http://www.rx1.info/download.php?id=1653


Since you ask, the mounting points for the "kit" are exactly as specified. All 4" back from stock.

The mounting points for mine are:
Front: Stock
Middle: 7.5" back from stock.
Rear: 7.5" back from stock.

Note that the connection points on the rails are also moved back 7.5" on the rails and the arms are all extended by 4" to make 11.5" needed for the 144" track.

Please stand by, in about an hour I'll post the math.
 
HAMMER said:
spray25 -- One person says it does not work… Hundreds say it does… Using the power of deductive reasoning here the odds of it doesn’t are not favored… I’m all for sorting this out through intelligent conversation and using history as guide…
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Actually I think I counted a couple of people on this post that called into question Hartman Inc. I did not seem to see hundreds that supported it here in this thread. Before you start pointing me to places where people are praizing Hartman Inc. you need to understand that I really don't care. Kind of like if I started pointing you to people who think Hartman is no good. Bottom line for me is if he has something I want and that I think will work I will buy it. If not, I won't. I would say that goes for everyone on this forum.

I welcome you to this site. I'm glad you joined. A few words of wisdom for you though..... If you attack people for talking about your dads products you will do him great harm here. People on this site have long memories and 9 times out of ten when an employee, family member, or owner of a business start fighting with the members they lose business. At the end of the day you can not please all people. I'm betting your dad understands this.
 
If you attack people for talking about your dads products you will do him great harm here.
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I requested conversation to a possible resolution and stated if your opinion is you don't like it your entitled to your opinion... Not exactly "attacking" here... The kits work just fine for 99.9% of the customers…
At the end of the day you can not please all people. I'm betting your dad understands this.
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Yep, heard that one before...

LB-- I see what your saying but you have re-engineered Yamaha's original design and from your post you have not tested it yet... Most people aren't willing to do that kind of work themselves or pay for that kind of work... Looks like you crunched all the numbers to remove as many variables as possible... I'll be curios to see how it actually works with everything laid out and long like that... How it applies force to the shocks through the range of travel and how adjustable it is will also be of interest... If it works as designed maybe you'll make a million off all the old Yam skids... Good luck to ya...
 
HAMMER said:
I see what your saying but you have re-engineered Yamaha's original design
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Yes, exactly.

and from your post you have not tested it yet...
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Very true, however I have confirmed that it does go through the entire motion while maintaining track tension exactly, except for the slight variance caused by the control rod slack.

Most people aren't willing to do that kind of work themselves or pay for that kind of work...
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Its good to have your own equipment and the patience to do it. Total cost for materials: $20.

Looks like you crunched all the numbers to remove as many variables as possible... I'll be curios to see how it actually works with everything laid out and long like that... How it applies force to the shocks through the range of travel and how adjustable it is will also be of interest...
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I will definitely be posting the results on this forum when I get the chance to test it thoroughly. I am hoping that I can get away with leaving the shocks and springs at stock, however, there is increased leverage against them, suggesting that a harder shock may be needed. In reality, a harder shock was needed already since the stock shock was pathetically soft allowing bottoming under too light of a hit.

If it works as designed maybe you'll make a million off all the old Yam skids... Good luck to ya...
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Unfortunately, the time it would cost me to set up for selling it could not be justified for even the best case possible return that it may generate.
 
RX-1MTN said:
Tom was great to deal with he knows more than all you know put together!!!
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That's an interesting comment and not very well thought out. Kind of like the guy that bought a new KK and was basically saying he was going to put a bunch of RX turbos in there place :o|

If Tom knows more than all of us put together then why would he use and sell clutch setups put together by the members of the forum? Seems he could do much better by himself.
 
Unfortunately, it's been I while since I have looked back on this post. Oh man! We have Hartman hacking, redesigned suspensions and recovering Arctic Cat owners.
So, back to the question at hand.
What's the skinny on the best tunnel aftermarket tunnel extension for the RX-1? If Hartman INC. has redesigned his tunnel extension WHY did he do so and WHAT has changed? I'm more than willing to give the man my business.
Who has experience installing or use of the MPI tunnel extension?
 
It's nice to see we're back on track.

Hammer, did you finally cave in and get an RX-1? The Viper is probably pretty tough to make competitive with the big boys I bet? Turbo one of these fat ladys and you've got yourself a real mountain muncher.

Damn it, now I'm getting off track!
How about Eckholm?
 
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