KMX Trike Front Suspension

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adam333
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KMX Trike Front Suspension

Post by adam333 » Mar 15, 2016 4:25 pm

KMX Trike Front suspension:

Fit on any adult KMX frame.
Travel : 57mm (2.25in)
Bike total width will increase by 146mm (5.75in)
Material: Alu 6061-T6 Black Anodized
Weight: 1.4 kg each.
No modification required on your KMX. Just remove the brakes & wheels, bolt the new suspension, reinstall the brakes and wheels.


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The installation kit include a left and right suspension unit + hardware + step by step instruction.
Fenders not included.
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2min video showing the suspension in action:


With the increased clearance, it is also possible to install fat tire on the trike:
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The suspension is designed for light wheels though. Heavy wheel will significantly reduce the suspension effects.

Pricing:
KMX Trike Front suspension retrofit kit: 795 US$ + shipping.

Available from http://www.kmxsuspension.ca or you can send me a pm or a email at: sales@royindustries.ca

____________________________________________________________________________________________________-

Air shocks are now also available but they add an extra 150 US$
weight go down to 1.25kg ea.
You will need an air shock pump for best results.
Air shock used

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KMX Trike Front suspension retrofit kit with air shock: 945 US$ + shipping.

Available from http://www.kmxsuspension.ca or you can send me a pm or a email at: sales@royindustries.ca

__________________________________________________________________________________________________

S.S. screws are also available but this option will add an extra 180 us$
note : Stainless Steel is not as strong, but it's a good option if rust is a concern.

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Available from http://www.kmxsuspension.ca or you can send me a pm or a email at: sales@royindustries.ca

___________________________________________________________________________________________________-

Customer feedback:

Robert Joseph's Optima Rider electric trike:

Quote: Thanks for offering this excellent kit, it is extremely well made and fantastic for the speedier ebikes!

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Guillermo’s KMX Batmobile:

Quote: THANK YOU. This thing is not just better, it’s on another dimension better.

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Paul MacDonald’s KMX Typhoon Ebike:

Quote: I am overjoyed and at peace with the way this trike has turned out. Thank you so much for offering this suspension kit on the Endless Sphere.

Paul MacDonald’s KMX Typhoon Ebike Review

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Michael S Copeland's KMX Venom with S.S. Screws:

Quote: Just took my first ride with the new air suspension kit. Wow, what a difference

Installation:
This was about as easy as a kit can get. Remove the wheel. Remove the brake. Install the suspension unit. Reinstall the wheel. Adjust the brake. The whole process took me an hour and a half. Most of the time was adjusting the brake. The Avid BB7s had to be adjusted as far away from the rotor as possible, but they fit. No issues. There is a clearance issue on the right side that Adam mentions in the very detailed and understandable instructions. Used a file and notched the brake mount on the original spindle. Easy. Kudos Adam. Excellent DFX. Design for performance, design for durability, design for assembly. Excellent!

Comfort:
The reduction in road chatter is very nice. Most of the big hits are softened quite a bit. Hits to the rear wheel still are jarring, but I have a 26" rear, so the hits aren't as bad as a 20" rear wheel. The big hits on the front are handled well. Still feel them but they aren't jarring. I purposefully hit some big potholes, just to see how the suspension would handle the hit. I felt it, but nothing like without suspension.

Stability:
Here is where this unit shines. There's still some bump steer, but it's nothing like without it. Being wider, the stance is more stable, but turns don't require as much english with my body to stay upright. Also, the suspension movement makes loose gravel much more stable. There's a fast downhill with REALLY loose sand and gravel. The unsuspended trike would still feel really squirrely, but the suspension makes it much more controllable. I feel a little faster, just because I'm more in control of the trike. It's a NOTICEABLE difference.

Thanks again Adam, well done!


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Terry’s KMX Ebike:

Quote: Went for my first test ride last weekend and holy crap, this thing is fast! The suspension worked flawlessly when I hit some pretty good bumps at high speed. Thanks again for a great product!

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Last edited by adam333 on Feb 12, 2018 8:37 pm, edited 20 times in total.

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gman1971
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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 19, 2016 3:29 pm

Very nice. I just saw your video on YT. So what does the 795 price include? Does it include the shocks/springs? Or just the hardware.

G.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 20, 2016 12:16 am

Thanks,

The kit is fully complete. ( it include chocks and hardware )

It include everything you need ( except your own tool ) which is a few allen keys and a wrench or a Vise grip.

There is also a step by step instruction include with the kit.
Last edited by adam333 on Aug 24, 2017 8:16 am, edited 3 times in total.

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Re: KMX Trike Front Suspension

Post by Doctorbass » Mar 20, 2016 12:49 am

That is a really nice kit and it could fit perfect on my 2011 typhoon! Thanks for the video, it show how well your kit is working!
I just wonder how the steering is affected with the wheel and the pivot that are more distant to each other... i guess you have more force to apply to teh steering to change direction right? or is the pivot axis remain on the wheel base?

Doc
CURRENT PROJECT: 2WD duo MXUS/Max-E ebike 32kW
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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 20, 2016 1:12 am

That sounds great! So is a complete bolt on solution. Once I am done assembling my trike the I'll probably get it... it sure looks like the way to go!! BTW, your trike is pretty amazing... I plan on going mid-drive on mine, I really like having gears as opposed to a single hub motor. :)

G.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 20, 2016 8:45 pm

Doctorbass wrote: I just wonder how the steering is affected with the wheel and the pivot that are more distant to each other... i guess you have more force to apply to teh steering to change direction right? or is the pivot axis remain on the wheel base?

Doc
Thanks Doc :)

The bike feel more stable at higher speed. I don't really feel much difference in the force required to steer the bike. If you stop by Montreal, let me know, so you can test it by yourself :)
gman1971 wrote: That sounds great! So is a complete bolt on solution. Once I am done assembling my trike the I'll probably get it... it sure looks like the way to go!! BTW, your trike is pretty amazing... I plan on going mid-drive on mine, I really like having gears as opposed to a single hub motor. :)
Thanks for the kind words :)

I personally prefer hub motors, chains always seems to break or derail, and they require maintenance.

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Re: KMX Trike Front Suspension

Post by Doctorbass » Mar 21, 2016 1:32 am

adam333 wrote:
Doctorbass wrote: I just wonder how the steering is affected with the wheel and the pivot that are more distant to each other... i guess you have more force to apply to teh steering to change direction right? or is the pivot axis remain on the wheel base?

Doc
Thanks Doc :)

The bike feel more stable at higher speed. I don't really feel much difference in the force required to steer the bike. If you stop by Montreal, let me know, so you can test it by yourself :)
gman1971 wrote: That sounds great! So is a complete bolt on solution. Once I am done assembling my trike the I'll probably get it... it sure looks like the way to go!! BTW, your trike is pretty amazing... I plan on going mid-drive on mine, I really like having gears as opposed to a single hub motor. :)
Thanks for the kind words :)

I personally prefer hub motors, chains always seems to break or derail, and they require maintenance.
Yeah this summer i might stop by as well as to see Boisrondeven and Maxwell65

Doc
CURRENT PROJECT: 2WD duo MXUS/Max-E ebike 32kW
https://endless-sphere.com/forums/viewto ... =3&t=65764
-Fastest speed record 117 km/h on flat
-Fastest 1/4 mile@ 114km/h on flat and 16.316 sec
-Succeded to haul a 19200 pounds schoolbus!
113kmh Gianthttp://www.evalbum.com/3406
Mongoosehttp://www.evalbum.com/1947
YOUTUBE---https://m.youtube.com/user/Doctorbasss
http://twitter.com/DocbassMelancon
I speak FRENCH and english

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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 21, 2016 10:33 am

NP,

Maybe I'll get to hub motors at some point... but so far my mid-drive experience has been positive... :)

G.
adam333 wrote:
Doctorbass wrote: I just wonder how the steering is affected with the wheel and the pivot that are more distant to each other... i guess you have more force to apply to teh steering to change direction right? or is the pivot axis remain on the wheel base?

Doc
Thanks Doc :)

The bike feel more stable at higher speed. I don't really feel much difference in the force required to steer the bike. If you stop by Montreal, let me know, so you can test it by yourself :)
gman1971 wrote: That sounds great! So is a complete bolt on solution. Once I am done assembling my trike the I'll probably get it... it sure looks like the way to go!! BTW, your trike is pretty amazing... I plan on going mid-drive on mine, I really like having gears as opposed to a single hub motor. :)
Thanks for the kind words :)

I personally prefer hub motors, chains always seems to break or derail, and they require maintenance.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by steveo » Mar 21, 2016 2:53 pm

i'll check this out after.. cant view yt vids at work :x
Repair Thread
https://endless-sphere.com/forums/viewto ... =3&t=27170
Hub Monster bike ~ 24s7p A123 15.4ah/18kv Six Phase Motor/Dual Max-E Adapttos/32kw~42.91Hp/Est 140LBS
X6 Kmx Trike ~ 24s4p 20ah/X6 MHM 602/Infinion EB324 IRFB 4110/20Kw~26.82Hp/Est 120LBS ~SOLD~
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Re: KMX Trike Front Suspension

Post by rborger73 » Mar 24, 2016 1:22 pm

So with the suspension does it also seem to do the work of a steering arm as well? I'd think there should be a little less of the easy over steer issue going on? Finishing up a clients KMX tornado within the next month. Hit a top speed of 58 yesterday in about 2/10ths of a mile the other day with it. Anything over 30 and while not super scary with it getting twitchy, but the fear of sneezing and drifting into on coming traffic does creep up occasionally. lol Customer buying has been race car building and driving for 40 years or more, so he can handle it, but I may suggest this option to him when I deliver and see if he wants to upgrade it. If it took care of the over steer, I'd be that much more inclined to go with this solution.

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 24, 2016 1:46 pm

rborger73 wrote:So with the suspension does it also seem to do the work of a steering arm as well? I'd think there should be a little less of the easy over steer issue going on? Finishing up a clients KMX tornado within the next month. Hit a top speed of 58 yesterday in about 2/10ths of a mile the other day with it. Anything over 30 and while not super scary with it getting twitchy, but the fear of sneezing and drifting into on coming traffic does creep up occasionally. lol Customer buying has been race car building and driving for 40 years or more, so he can handle it, but I may suggest this option to him when I deliver and see if he wants to upgrade it. If it took care of the over steer, I'd be that much more inclined to go with this solution.
My top speed on this trike is 65km/h ( 40 mph ). At that speed, the over steer is definitively a non issue. I have no experience above that speed though. your bike reach 58 mph? or km/h?

This being said, if you increase the front wheel diameter, the bike is definitively getting twitchy. ( the video was done on the regular 16 inch tire and it is really stable )

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Re: KMX Trike Front Suspension

Post by rborger73 » Mar 24, 2016 2:01 pm

adam333 wrote:
rborger73 wrote:So with the suspension does it also seem to do the work of a steering arm as well? I'd think there should be a little less of the easy over steer issue going on? Finishing up a clients KMX tornado within the next month. Hit a top speed of 58 yesterday in about 2/10ths of a mile the other day with it. Anything over 30 and while not super scary with it getting twitchy, but the fear of sneezing and drifting into on coming traffic does creep up occasionally. lol Customer buying has been race car building and driving for 40 years or more, so he can handle it, but I may suggest this option to him when I deliver and see if he wants to upgrade it. If it took care of the over steer, I'd be that much more inclined to go with this solution.
My top speed on this trike is 65km/h ( 40 mph ). At that speed, the over steer is definitively a non issue. I have no experience above that speed though. your bike reach 58 mph? or km/h?

This being said, if you increase the front wheel diameter, the bike is definitively getting twitchy. ( the video was done on the regular 16 inch tire and it is really stable )

MPH. 20" rims in the front. Ya anything north of 40 you furrow your forehead and start really focusing on steering. I got pretty used to it, but ya rider error could be fast and furious if not watching. lol

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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 24, 2016 2:23 pm

What power level to reach 58mph? I am shooting for 60 to 70 with 5 kW mid drive.

G.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by methods » Mar 24, 2016 2:33 pm

I love this board...

Wow what a vibrant community of problem solvers. This post makes me want to resurrect my KMX and try commuting it again for a while. I cant tell you how many times I have 2-wheeled a pot-hole at 35mph and jarred my brain. Balloon tires helped... but an ebike that is sustainable MUST have suspension.

I see the springs but are those actually shocks inside or are they just carriers?

thanks,
-methods
"One test is worth a thousand opinions"

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Re: KMX Trike Front Suspension

Post by oatnet » Mar 24, 2016 7:35 pm

Very Cool. 8)
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Re: KMX Trike Front Suspension

Post by rborger73 » Mar 25, 2016 1:03 am

gman1971 wrote:What power level to reach 58mph? I am shooting for 60 to 70 with 5 kW mid drive.

G.

20s with an mxus 4t adaptto mini E. With moped rim and tire. Think it is 18 or 19" rim, but with the moped tire I think around 24" if I recall... half asleep.. some of this may be wrong.. lol

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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 25, 2016 2:06 am

rborger73 wrote:
gman1971 wrote:What power level to reach 58mph? I am shooting for 60 to 70 with 5 kW mid drive.

G.

20s with an mxus 4t adaptto mini E. With moped rim and tire. Think it is 18 or 19" rim, but with the moped tire I think around 24" if I recall... half asleep.. some of this may be wrong.. lol

Very nice, then it sounds like I might be able to get at least to 60 with 18S on my mid drive since I have the gearing to push it a bit harder than a hub. I'll be running a 26" rear wheel as well.

G.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by evolutiongts » Mar 25, 2016 4:31 pm

I'm interested in one as well.
http://www.electricrt.com
Electric Race Technologies

10Kw KMX death trike
MUXUS 3K Turbo
Sabvoton 72V150A
Moto Wheels all around
Front Suspension Kit
https://endless-sphere.com/forums/viewt ... =6&t=83423

Giant Trance 4 Full Suspension
Cyclone 3000W
74V 3000W
https://endless-sphere.com/forums/viewto ... =6&t=59005

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Re: KMX Trike Front Suspension

Post by methods » Mar 26, 2016 7:59 pm

methods wrote: I see the springs but are those actually shocks inside or are they just carriers?

Did I miss a detail?

-methods
"One test is worth a thousand opinions"

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Re: KMX Trike Front Suspension

Post by gman1971 » Mar 27, 2016 1:02 am

Rode my KMX trike on human power 28 miles today, went up 11% hills and down... awesome, and I didn't thought the feel was that bad without suspension... I was expecting the harshest of rides but it was actually rather nice so if the thing rides so well stock I can imagine with this suspension it will be amazing to ride!!

G.
I am all about high-speed, low-drag, mid-drives and gears...
A-1B trike, 6+kW, 65+mph (Cyclone powered): https://www.youtube.com/watch?v=oFC8MRwvgUM
A-2A trike 3kW, 50mph (Cyclone powered): https://www.youtube.com/watch?v=bNoqp0wl6Vo
eB-1C bike 3kW, 42mph (Cyclone powered): https://www.youtube.com/watch?v=_weSmz_h3Ig

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 27, 2016 8:37 pm

methods wrote:
methods wrote: I see the springs but are those actually shocks inside or are they just carriers?
-methods
This is the spec of the shocks used right now:
Motorcycle Shock Absorber 125mm*750LBS/IN Black Scooter Damping Suspension

Brand Name: HAOTAI
Item Length: 125mm
Item Weight: 0.34kg
Material: Metal
LBS/IN: 750LBS
Color: Black
Image
Usually, they are used on miniature electric scooters.

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Re: KMX Trike Front Suspension

Post by methods » Mar 27, 2016 8:47 pm

Right... I have read a lot of Chinese descriptions :mrgreen:

What I am asking is if there is gas in that shock or if the dampening system is only a spring.
I know it sounds like an obvious question... but I am a guy who gets surprised a lot.

thanks,
-methods
"One test is worth a thousand opinions"

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 27, 2016 11:14 pm

From the feeling I have while riding it, I believe there is gas inside. Otherwise it would just keep bouncing on and on when I go over a speed bump.

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Re: KMX Trike Front Suspension

Post by methods » Mar 28, 2016 10:25 am

If someone could spin off that adjustment nut and actuate the piston to see it would be appreciated.

thanks,
-methods
"One test is worth a thousand opinions"

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Re: KMX Trike Front Suspension

Post by adam333 » Mar 28, 2016 9:11 pm

methods wrote:If someone could spin off that adjustment nut and actuate the piston to see it would be appreciated.

thanks,
-methods
no problems, I have a new set coming by mail in a few days, I will make the test and post the result.

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