To much sag with dirtbike carrier?

Boognish_Forever · Jun 12, 2020

I put my bike on the mx hauler for the first time and notice it rides pretty rough. I’m about to do a long round trip and concerned about damaging the springs or something else if I go off-road? I’d say the total weight on the tongue is 400lbs, that’s including the bike and hauler.

phattyduck · Jun 12, 2020

Check how far your axle is off the hard bump stops on the frame. I'm going to assume you are already riding on the in-spring cone bump stops. Do you have any mods done to the factory suspension? You may want to consider airbags for this kind of situation.

400lbs cantilevered out like that will cause more sag on the rear than 400lb tongue weight of a trailer...

-Charlie

Boognish_Forever · Jun 12, 2020

phattyduck said:
Check how far your axle is off the hard bump stops on the frame. I'm going to assume you are already riding on the in-spring cone bump stops. Do you have any mods done to the factory suspension? You may want to consider airbags for this kind of situation.

400lbs cantilevered out like that will cause more sag on the rear than 400lb tongue weight of a trailer...

-Charlie

It’s all factory suspension and it’s very close to the cone bumps with the bike on there. Airbags is an option, but can’t spend the money on it right now. I haven’t check the hard bumps on the frame, but I usually thought when it’s that high the rear wheel(s) is tucked in the wheel well

RotaryDreamz · Jun 13, 2020

I highly recommend airbags whenever you can. They are not that expensive, I think I bought mine for $70 on Amazon. Quick pumps from a bike pump and I was set. My trunk is loaded when I go on my hunting trips. Plus a rear bumper and tire carrier, it sagged more than I liked and bottomed out going over bumps.

phattyduck · Jun 13, 2020

Whatever the case may be, it won't damage your 4Runner... it will just not be very comfortable. The cone bumps are basically progressive springs to keep you from regularly hitting the hard bump stops. They do make things feel odd when you are engaging them though.

I'd second the airbag suggestion...

-Charlie

Kanoe · Jun 13, 2020

Alternatively you could always sell me that bike and get yourself a 250. That beauty is a 650R is it not? I had a 650L for a while and yours is much nicer.

Boognish_Forever · Jun 13, 2020

RotaryDreamz said:
I highly recommend airbags whenever you can. They are not that expensive, I think I bought mine for $70 on Amazon. Quick pumps from a bike pump and I was set. My trunk is loaded when I go on my hunting trips. Plus a rear bumper and tire carrier, it sagged more than I liked and bottomed out going over bumps.

Thanks! Didn’t think I could find them this cheap. One of the reviews on amazon I found had the same exact mx hauler and is working out well for him. Did you have to remove the springs or can you jam them in there deflated?

AIR LIFT 60743 1000 Series Rear Air Spring Kit Amazon.com: AIR LIFT 60743 1000 Series Rear Air Spring Kit: Automotive

Boognish_Forever · Jun 13, 2020

Kanoe said:
Alternatively you could always sell me that bike and get yourself a 250. That beauty is a 650R is it not? I had a 650L for a while and yours is much nicer.

Ha! Maybe a 250 two stroke for the tight trails. I won’t be selling this bike anytime soon. Yup, it’s a 2000 XR650R fully street legal. I use to own a 650L for a while as well and was a great bike, but I wanted something faster and lighter. I searched for years trying to find a R that was in good shape and street legal in Oregon. The only thing I don’t like is kick starting this pig when I dump it on a hill climb.

absalom · Jun 13, 2020

phattyduck said:
400lbs cantilevered out like that will cause more sag on the rear than 400lb tongue weight of a trailer...

-Charlie

Oh man, that sounds like a super fun Statics problem.

RotaryDreamz · Jun 13, 2020

Boognish_Forever said:
Thanks! Didn’t think I could find them this cheap. One of the reviews on amazon I found had the same exact mx hauler and is working out well for him. Did you have to remove the springs or can you jam them in there deflated?

AIR LIFT 60743 1000 Series Rear Air Spring Kit Amazon.com: AIR LIFT 60743 1000 Series Rear Air Spring Kit: Automotive

I've heard some people able to install them by deflating them. It was easier for me to just remove the springs. I installed them upside down and ran the airline through the existing hole. There is a few write ups on here on how to I stall them. Pretty easy. Good luck!

CJ9601 · Jun 13, 2020

Nice nickname, I love ween....and 4runners

Boognish_Forever · Jun 13, 2020

CJ9601 said:
Nice nickname, I love ween....and 4runners

I really should put a big ole Boognish sticker that would fill up my rear window.

[emoji444] “I've got a Toyota with a Mopar cam”[emoji6].

19963.4lsr5 · Jun 13, 2020

I thought about one of those carriers myself.

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3bears · Jun 13, 2020

yep..air bags.
thre are several writeups...you can install with springs in but the inner cone has to be cut... can get a sawzall into it to do it. I have done it both ways. Cutting the cones in place and getting out the pieces was a pain in the arse ( short while ago for a friend)
My rig I was switching springs anyway....to 99 talls...so did it all then with parts out. With floor jacks, tools and no rust it is little effort to pull springs, my friends is a coastal rust bucket thats why we went the route of not pulling springs

Boognish_Forever · Jun 13, 2020

19963.4lsr5 said:
I thought about one of those carriers myself.

Sent from my iPhone using Tapatalk

I haven’t been off-road with it yet, but it seems like these type of haulers keep the bike from moving around as much. Only thing is they’re not cheap, but I think it’s worth the extra$ for less of a chance of falling off. Also I like how it doesn’t compress the forks, so you can really get it tight.

Boognish_Forever · Jun 13, 2020

3bears said:
yep..air bags.
thre are several writeups...you can install with springs in but the inner cone has to be cut... can get a sawzall into it to do it. I have done it both ways. Cutting the cones in place and getting out the pieces was a pain in the arse ( short while ago for a friend)
My rig I was switching springs anyway....to 99 talls...so did it all then with parts out. With floor jacks, tools and no rust it is little effort to pull springs, my friends is a coastal rust bucket thats why we went the route of not pulling springs

Was your friends springs rusted when you installed the bags? I looked at my rear springs today and the paint is chipping off. That being the case, I foresee the rust or chipped paint rubbing on the airbag and most likely will cause a leak.

I have a 99, so it already has the stock tall springs and really didn’t want to replace them being the height is pretty level as it sits right now at 35 1/2” from fender to the ground.

Where did you get your 99 tall springs and how much? I’m guessing the dealer will be expensive.

Kanoe · Jun 13, 2020

You might consider OME 2906 rear springs. They’ll likely give you a 1 inch boost in the rear but they’ll carry the load better than OEM 99 springs. You shouldn’t need airbags with the 2906’s, they are heavy enough on their own. The price per pair isn’t bad either.

surfncamp · Jun 13, 2020

I just installed the Firestone Airbags, bought them for $80 shipped. Did the whole thing myself and only removed the spare tire and passenger side rear wheel. I recommend the Milwaukee long glad knife (for insulation cutting) from Home Depot. Made removing the rubber bump stops super easy.

All in all did the job by myself in under 3hrs. Very happy with the results, my camper sits perfectly level with 30psi in each. I have an electric air compressor that I plug into the rear plug and they’re inflated in less than 10 seconds! Highly recommend these airbags.

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19963.4lsr5 · Jun 13, 2020

Boognish_Forever said:
I haven’t been off-road with it yet, but it seems like these type of haulers keep the bike from moving around as much. Only thing is they’re not cheap, but I think it’s worth the extra$ for less of a chance of falling off. Also I like how it doesn’t compress the forks, so you can really get it tight.

I also have an 87 XR600R with the Baja Designs Street Legal Kit on it but never got a title reconstructed for it. I did it because my friend had a 650R that he made street legal and OMG on the street it was amazing.

A true license stealer. We were always looking over our shoulder lookin for the cops......

Edit: that’s my 95 CR500 I had a 87 and 86 also.

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Boognish_Forever · Jun 14, 2020

19963.4lsr5 said:
I also have an 87 XR600R with the Baja Designs Street Legal Kit on it but never got a title reconstructed for it. I did it because my friend had a 650R that he made street legal and OMG on the street it was amazing.

A true license stealer. We were always looking over our shoulder lookin for the cops......

Edit: that’s my 95 CR500 I had a 87 and 86 also.

Sent from my iPhone using Tapatalk

CR500’s are terrifying! It’s the devil packed in an engine. The 650R has loads of all around power, from a tractor in the tight hilly trails and will scream on the freeway or desert. It really is a great bike. That goes with all XR’s as they are reliable as a 4runner.

To much sag with dirtbike carrier?

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